CA1220504A - Electric lamp with self-mounting frame-assembly and methods of constructing same - Google Patents
Electric lamp with self-mounting frame-assembly and methods of constructing sameInfo
- Publication number
- CA1220504A CA1220504A CA000448138A CA448138A CA1220504A CA 1220504 A CA1220504 A CA 1220504A CA 000448138 A CA000448138 A CA 000448138A CA 448138 A CA448138 A CA 448138A CA 1220504 A CA1220504 A CA 1220504A
- Authority
- CA
- Canada
- Prior art keywords
- frame
- assembly
- base
- neck
- forming
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/28—Envelopes; Vessels
- H01K1/34—Double wall vessels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/42—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp
- H01K1/44—Means forming part of the lamp for the purpose of providing electrical connection, or support for, the lamp directly applied to, or forming part of, the vessel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Fastening Of Light Sources Or Lamp Holders (AREA)
Abstract
ABSTRACT
A double-enveloped electric lamp having a self-mounting frame-assembly supporting a light-source capsule within the outer envelope, such frame-assembly being mounted by means of elastic and frictional forces other than glass-to-glass or glass-to-metal seals. In one embodiment of the invention, the frame-assembly is mounted on the neck of the outer envelope by means of a clamp on each leg of the frame-assembly; each clamp grasps the brim of the neck within a formed groove. Locking means may be obtained by mounting the lamp base over the grooves; barbed prongs on each clamp bite into the shell of the base and lock together the component parts of the lamp. In a second embodiment, a wire frame-assembly having two preformed legs with barbed prongs is mounted on the neck of the outer envelope by fitting each preformed leg into a matching groove formed in the threaded neck of the outer envelope. Locking means may be obtained when the lamp base is screwed over these grooves; the barbed prongs bite into the shell of the base and lock together the component parts of the lamp.
Double-enveloped lamps having self-mounting frame-assemblies may be constructed more simply and economically than possible under the existing art.
A double-enveloped electric lamp having a self-mounting frame-assembly supporting a light-source capsule within the outer envelope, such frame-assembly being mounted by means of elastic and frictional forces other than glass-to-glass or glass-to-metal seals. In one embodiment of the invention, the frame-assembly is mounted on the neck of the outer envelope by means of a clamp on each leg of the frame-assembly; each clamp grasps the brim of the neck within a formed groove. Locking means may be obtained by mounting the lamp base over the grooves; barbed prongs on each clamp bite into the shell of the base and lock together the component parts of the lamp. In a second embodiment, a wire frame-assembly having two preformed legs with barbed prongs is mounted on the neck of the outer envelope by fitting each preformed leg into a matching groove formed in the threaded neck of the outer envelope. Locking means may be obtained when the lamp base is screwed over these grooves; the barbed prongs bite into the shell of the base and lock together the component parts of the lamp.
Double-enveloped lamps having self-mounting frame-assemblies may be constructed more simply and economically than possible under the existing art.
Description
-~ D-24,950 ^l -ELECTRIC LAMP ~ITH SELF-MOUNTING
FRAME-ASSEMBLY; AND METHODS OF CO~STR~CTING SAME
TECHNICAL FIEL~
This invention relates to electric lamps and more particularly to such lamps having a self-mounting frame-assembly for supporting a light-source capsule within an outer envelope.
Under the existing art, the manufacture of a double-enveloped electric lamp typically involves the following steps. A
light-source capsule having two lead-in ~ires is ~ounted on a glass stem support. The capsule and stem are inserted into the outer envelope. The glass stem support is flame sealed to the glass outer envelope. The outer envelope is evacuated, a desired fill gas may be introduced into the outer envelope, and the outer envelope is hermetically sealed. A lamp base is mounted on and cemented to the nec~ of the outer envelope. One of the capsule lead-in wires is soldered to the insulated tip of the base. The second lead-in wire is soldered or welded to the outer shell of the base.
The described manufacturing process is relatively costly. The fabrication of a hermetic seal between the lead-in wires and glass stem and between the ste~ and outer envelope requires considerable technological skill and quality control.
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.; 12~2~5(~4 D^24,950
FRAME-ASSEMBLY; AND METHODS OF CO~STR~CTING SAME
TECHNICAL FIEL~
This invention relates to electric lamps and more particularly to such lamps having a self-mounting frame-assembly for supporting a light-source capsule within an outer envelope.
Under the existing art, the manufacture of a double-enveloped electric lamp typically involves the following steps. A
light-source capsule having two lead-in ~ires is ~ounted on a glass stem support. The capsule and stem are inserted into the outer envelope. The glass stem support is flame sealed to the glass outer envelope. The outer envelope is evacuated, a desired fill gas may be introduced into the outer envelope, and the outer envelope is hermetically sealed. A lamp base is mounted on and cemented to the nec~ of the outer envelope. One of the capsule lead-in wires is soldered to the insulated tip of the base. The second lead-in wire is soldered or welded to the outer shell of the base.
The described manufacturing process is relatively costly. The fabrication of a hermetic seal between the lead-in wires and glass stem and between the ste~ and outer envelope requires considerable technological skill and quality control.
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.; 12~2~5(~4 D^24,950
-2-A double-enveloped electric lamp, of equivalent or improYed quality compared with those currently available, which can be manufactured by a process simpler and less expensive than the procPss herein6efore described would constitute an advancement in the art.
DISCLOSURE OF THE INVENTION
It is, therefore, an object of this invention to obviate the deficiencies in the prior art.
It is another object of this invention to provide a self-mounting frame-assembly for a double-enveloped electric lamp.
It is still another object of this invention to provide a double-enveloped electric lamp which can be manufactured simply and economically.
These objects are accomplished, in one aspect of the invention, by the provision of an electric lamp comprising an outer envelope, a frame-assembl~ within the outer envelope, and a light-source capsule mounted on one end of the frame-assembl~. ~he lamp further comprises mounting means operatively mounting the frame-assembly and light-source capsule within the outer envelope by means of elastic and frictional forces. Means are operatively connected to the lamp for providing electrical power to the light-source capsule.
The lamp is manufactured by a method comprising the following steps. An outer envelope is formed. A frame-assembly i5 fonmed. A
light-source capsule is constructed. The light-source capsule is mounted on one end of the frame-assembly. The frame-assembly and light source capsule are mounted within the outer envelope by means of elastic and frictional forces. ~;eans for providing electrical power to said light-source capsule from an external source are operatively connected to the lamp.
2~504 . D-24,950
DISCLOSURE OF THE INVENTION
It is, therefore, an object of this invention to obviate the deficiencies in the prior art.
It is another object of this invention to provide a self-mounting frame-assembly for a double-enveloped electric lamp.
It is still another object of this invention to provide a double-enveloped electric lamp which can be manufactured simply and economically.
These objects are accomplished, in one aspect of the invention, by the provision of an electric lamp comprising an outer envelope, a frame-assembl~ within the outer envelope, and a light-source capsule mounted on one end of the frame-assembl~. ~he lamp further comprises mounting means operatively mounting the frame-assembly and light-source capsule within the outer envelope by means of elastic and frictional forces. Means are operatively connected to the lamp for providing electrical power to the light-source capsule.
The lamp is manufactured by a method comprising the following steps. An outer envelope is formed. A frame-assembly i5 fonmed. A
light-source capsule is constructed. The light-source capsule is mounted on one end of the frame-assembly. The frame-assembly and light source capsule are mounted within the outer envelope by means of elastic and frictional forces. ~;eans for providing electrical power to said light-source capsule from an external source are operatively connected to the lamp.
2~504 . D-24,950
-3^
Double-enveloped electric lamps having a self~mounting frame-assembly for supporting a light-source capsule within the outer envelope may be manufactured more simply and economically than double-enveloped lamps currently availabl;e without any sacrifice in the quality of the lamps.
BRIEF DESCRIPTION OF THE DRAWlNGS
FIG. 1 is a sectional view of one embodiment of the invention;
FIG. 2 is an enlarged sectional plan view along line 2-2 of FIG.
1 with parts removed for clarity;
FIG. 3 is an enlarged sectional view of the neck-portion of the outer envelope of the embodiment of the invention shown in FIG. l;
FlG. 4 is an enlarged pictorial view of a frame-assembly employed in the embodiment of the invention shown in FIG. l;
FIG. 5 is a pictorial view of a threaded lamp base;
FIG. 6 is an enlarged elevational view of one clamp portion of the frame-assembly shown in F16. 4;
FIG. 7 is a sectional view of another embodiment of the invention;
FIG. 8 is an enlarged sectional plan view along line 8-8 of FIG.
20 7, with parts removed for clarity;
~ I6. 9 is an enlarged elevational view of the neck-portion of the outer envelope of the embodiment of the invention shown in FI6. 7;
FIG. 10 is a pictorial view of a frame-assembly employed in the : 25 embodiment of the invention shown in FIG. 7;
122Ui5a~4 D-24,950 FIG. ll is a top v~ew of the frame-assembly used in the embodiment of the invention shown in FIG. 7.
BEST MODE FOR CARRYING OUT THE INVENTION
For a better understanding of the present inventiorl, together with other and further objects, advantages, and capabilites thereof, reference is made to the following disclosure and appended claims taken in conjunction with the above-described drawings.
As used herein, the term Ulight-source capsule" denotes a halogen capsule of a tungsten halogen incandescent lamp; an arc tube of an arc discharge lamp; or any light-emitting capsule within the outer envelope of a lamp.
The term ~elastic~l herein is defined as the property of a body, when defonmed, to return to its normal configuration automatically as the deforming forces are rem~ved. The tenm Ufriction" herein is defined to be the ~orce which opposes relative motion between two touching bodies caused by the respective properties of the surfaces of each body which are in contact ~ith each other. Neither ~elastic~ nor ~frictiona as used herein shall include any fonce which opposes relative motion between two bodies caused by the fusion of one body with the other, such fusion including any glass-to-glass or glass-to~metal seal.
Referring to the drawings with greater particularity. FI6. l shows one embodiment of the invention, being lamp 30 having a longitudinal axis L and comprising outer-envelope 32, light-source capsule 34, frame-assembly 36, and base 38. Outer-envelope 32 has a neck-portion 40. Capsule 34 in this instance is a tungsten halogen incandescent capsule with a first lead-in wire 42, a second lead-in wire 44, and a tungsten filament 45 extending between the internal terminantions of lead-in wires 42 and 44. Capsule 34 in this embodiment is mounted on frame 36 by means of lead-in wire 42.
- 122~504 , D-24,950 s FIG. 2 shows neck 40 having first groove 46 with inner-wall 47, and second groove 48 with inner-wall 49, both grooves being fonmed in neck ~0.
FIG. 3 shows that within groove 46, ridge 52 is formed adjacent to the brim of neck 40; likewise, ridge S4 is fonlled adjacent to the brim of neck 40 within groove 48. Annular ridge 50 circumscribes neck 40 adjacent to the ends of grooves 46 and 48 remote from the brim; ridge 50 is not confined within grooves 46 and 48.
Frame assembly 36 is il~ustrated in FIG. 4 and is characterized herein as being the ~clamp-on~ type. This characterization describes the manner in which frame-assembly 36 is mounted as will be described below. As may be seen in FlG. l, frame 36, with capsule 34 mounted thereon, is inserted into outer envelope 32 through neck 40 and positioned such that clamps 56 and 58 are aligned with grooves 46 and 48, respectively. Frame 36 may be pushed deeper into outer envelope 32. In so doing, clamp 56 will be spread open by ridge 52. ~hen frame 36 has been fully inserted into outer envelope 32, clamp 56 will spring back to its original shape because of the inherent elasticity of the material from which clamp 56 is constructed. Clamp 56 0ay be characterized as ~clamping on~
to ridge 52. ~hen frame 36 is mounted, re-entrant portion 65 Of clamp 56 clasps ridge 52. ln an identical manner, re-entrant portion 67 of clamp 58 clasps ridge 54. ThuS, clamps 56 and 58, through their re-entrant portions 65 and 67, exert elastic and frictional forces against neck 40 of outer envelope 32 which comprise the mounting means for frame 36 in this embodiment of the invention.
FIG. 5 is a pictorial view of a lamp base 38 comprising threaded shell 60 and insulated tip 62. In the embodiment of the invention shown in FIG. l, base 38 is characterized as a "push-on" type. This characterization describes the method of mounting base 38 on outer envelope 32, which is accomplished by pushing base 38 over neck 40 5(~4 D-24,950 and c~amps 56 and 58 toward ridge 50. In so mounting base 38, shell 60 ~ill compress prongs 64 and 66 toward inner walls 47 and 49, respectively, thereby preventing clamps 56 and 58 from opening, as well as insuring that clamps 56 and 58 will be tightly and securely mounted on outer envelope 32. Base 38, when mounted, reinforces the mounting means for frame 36.
Prongs 64 and 66 have sharply barbed tips 68 and 70, respectively. When base 38 has been fully mounted, tips 68 and 70 will bite into shell 60. Base 38, ~hen mounted, will defon~ pror,gs 64 and 66 into grooves 46 and 48, respectively. Elastic forces within these clamps will tend to return prongs 64 and 66 to their unextended positions. The elastic forces cause tips 68 and 70 of prongs 64 and 66, respectively, to press against shell 60 with sufficient force to imbed the sharply pointed barbs into shell 60.
Any attempted motion of base 38 away from ridge 50 or any attempted rotation of base 38, clockwise or counter-clockwise, about neck 40 will be prevented by prongs 64 and 66 which, being imbedded in ~hell 60, will hold or Ulock'' base 38 securely in its mounted position.
Thus, in this embodiment of the invention, base 3B cooperates ~ith clamps 56 and 58 and neck 40 in order to form locking means ~hereby frame 36, base 38, and outer envelope 32 will remain securely engaged despite jostling and use of laTp 30.
FIG. 6 is an enlarged elevational view of clamp 56 showing ang7e A, which preferably is greater than 45. ~hen base 38 is b~ing mounted, shell 60 depresses prong 64 into groove 46. Because of the freedom of motion into groove 46, clamp 56 does not resist the movement of base 38 over neck 40 toward ridge 50. For identical reasons, clamp 58 does not resist the same movement of base 38.
~hen base 38 is fully mounted, any movement of base 38 ahay from ridge 50 or any rotational movement of base 38 will be prevented by clamps 56 and 58.
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D-24,950 In this embodiment of the invention, base 38 is threaded. The thread on shell 60 is not essential to the locking means. A bayonet type base or another type of lamp base with or without thread may be employed with the sam~ locking means as described with this S embodiment and the desired results will be obtained. Barbed tips 68 and 70 are fabricated from a material sufficiently sharp and durable with respect to shell 60 that tips 68 and 70 will ~Ibiteu or imbed themselves into shell 60 when base 38 is mounted on neck 40.
The contact of tips 68 and 70 with shell 60 can form a suitable electrical connection between shell 60 and frame 36. In this embodiment, frame 36 is constructed from an electrically conducting material and lead-in 42 may be mounted on frame 36 such that a suitable electrical connection, as well as an adequate structural connection, is made between lead-in 42 and frame 36. Thus, lead-in 42 of capsule 34 is electrically connected, via frame 36 and shell 60, to one pole of an external power supply; the elastic nature of frame 36 will assist in maintaining the electrical sontact throughout the life of the lamp. The electrical circuit within lamp 30 is completed by electrically connecting lead-in 44 of capsule 34 to tip 62 of base 38, such as by soldering; tip 62 being electrically insulated from shell 60 of h se 38. Shell 60 and tip 62 of base 38 are constructed from an electrically conducting material.
FIG. 7 shows another embDdiment of the invention. Lamp 80 has a longitudinal axis L and comprises outer envelope 82, light-source capsule 84, frame-assembly 86, and threaded base 38. Outer envelope 82 has a neck-portion 90. In this instance, capsule 84 is a tungsten-halogen incandescent capsule with a first lead-in wire 92, a second lead-in wire 94, and a tungsten filament 95 extending between the internal terminations of lead-in wires 92 and 94.
Capsule 84 is mounted on frame 86 by means of lead-in wire 92.
- ~ 22~S04 D-24,950 Neck 90 is formed with a first-groove 96 and second-groove 98.
Groove 96 comprises three connecting grooves, namely first-connecting groove 100, second-connecting groove 102, and third-connecting groove 104. Groove 100 is formed in brim 114 of s neck 90 and runs from the inside surface 116 to outside surface 118 where it connects with groove 102.
Neck 90 has thread 106 formed therein; the thread extends approximately from brim 114 to ridge 117. Thread 106 is matched with the inside thread of base 38 sLch that base 38 may be mounted by being screwed onto neck 90. Groove 102 is fonned into outside surface 118 and thread 106. Groove 102 proceeds from brim 114 toward ridge 117 running parallel to central axis L and traversing thread 106 until groove 102 meets groove 104. Groove 104 is fo,rmed in outside surface 118 and thread 106; it is perpendicular to groove i5 102; it proceeds from groove 102 in the direction that thread 106 advances toward ridge 117.
Groove 98, comprising connecting grooves 108, 110, and 112, is fonmed opposite groove 96 in neck 90. Grooves 104 and 112 both point in the direction of advancing thread 106, i.e., in the direction of rotation of base 38 when base 3B is being mounted on neck 90.
FIG. 10 is a pictorial view of frame-assembly 86 which is characterized herein as being the ~slide-on~ type. This characterization describes the manner in which frame-assembly 86 is mounted. As may be seen in FI6. 7, frame 86, with capsule 84 mounted thereon, is inserted into outer envelope 82 through neck 90 and positioned such that formed-leg 120 is aligned with groove 96 and fo~ned-leg 128 is aligned with groove 98. lhiS is possible because leg 120 of frame 86 has been preformed to match groove 96 of neck 90 as follows: segment 122 fits into groove 100, segment 124 fits into groove 102; segment 126 fits into groove 104 at the intersection of groove 102 and 104; and segment 126 protrudes . D-24,950 _g tangentially from groove 104. In a similar manner, leg 128 of frame 86 has been preformed to match groove 98 of neck 90 such that segment 130 fits into groove 108; segmRnt 132 fits into groove 110;
segment 134 fits into groove 112 at the intersection of grooves 110 and 112; and segment 134 protrudes tangentially from groove 112.
FIG. 11 is a top view of.frame-assembly 86 showing angles B and C, each a right angle, which explains why segments 126 and 134 protrude tangentially from grooves 104 and 112, respectively, when frame 86 is mounted on neck 90. Thus, frame 86 is mounted on outer envelope 82 by "sliding on" frame 86 to neck 90 such that legs 120 and 128 fit into matched receiving grooves 96 and 98, respectively.
The threaded lamp base 38 also may be used with the lamp shown in FIG. 7. Base 38 is mounted on neck 90 by screwing base 38 onto thread 106 with frame 86 already fitted onto neck 90. In order to mount base 38 fully, protruding segments 126 and 134 of frame 86 must be depressed into grooves 104 aod 112-, respectively. Base 38 is characterized as a Uscrew-on" base because of the method of mounting. While depressed, segments 126 and 134 act as springs;
each segment exerts an elastic force against shell 60 of base 38.
m ese elastic forces do not i~pede the forward rotation of base 38 towRrd ridge 117 of neck 90, because both segments point in the direction of the mounting rotation. However, if base 38 is rotated in the direction of dismounting, barbed tips 136 and 138 of legs 1~0 and 128, respectively, will immediately bite into shell 60 and prevent further rotation of base 38 in the dismount direction.
Thus, once base 38 is fully mounted, base 38 is ~locked~ penmanently in place.
The mounting of base 38 also securely fixes frame 86. Base 38 depresses segments 126 and 134 tightly into grooves 104 and 112, respectively, and the spring action of both of these segments against shell 60 reinforces the security of the mounting means for frame 86. The entire shell of base.38 also assists in the mounting means for frame 86.
-- 122t~S04 D-24,950 ^10-In the embodiment shown in FI6. 7, the matched thread of neck 90 and base 38 permits base 3~ to be mounted by means of being screwed on neck,90. Barbed tips 136 and 138 can be formed from a suffice~tly sharp and durable material with respect to shell 60 to insure that the tips will bite into or become imbedded into shell 60 whereby the locking means will be implemented.
In the embodiment shown in FIG. 7, frame 86 is constructed from an electrically conducting material. The contact of tips 136 and 138 with shell 60 fonms a redundant electrical contact for one pole of an electrical circuit. Electrical power from an external source may be transmitted to capsule 8~ through frame 86 which is electrically connected to lead-in wire 92. The circuit is completed by electrically connecting lead-in wire 94 to tip 62 of base 38 which is electrically insulated from shell 60.
lS In a laboratory example of the em~odiment of FIG. 1, .020 inch (.051 centimeters) thick nickel-plated stainless steel was used for the fabrication of frame-assembly 36. Capsule 34 was mounted on frame 36 by welding lead-in 42 to frame 36.
In a laboratory example of the emboaiment of FI6. 7, fra~e 86 ~as constructed from .050 inch (1.27 centimeters) diameter nickle-plated steel wire. Capsule 84 ~as mounted to frame 86 by welding lead-in 92 to frame 86. In both embodiments, base 38 was an Edison base. The frame assemblies ~ere constructed by welding the respective component parts.
~n laboratory examples of both embodiments of the invention disclosed in FIG. 1 and FIG. 7, the wall thickness of the neck-portion of the outer envelope was greater than any of the other walls of the outer envelope in order to provide additional strength to the neck-portion of the lamps. The outer-envelopes ~ere fonmed from soda-lime glass Yia a blow-molding manu~acturing process.
-- lZ20S04 D-24,950 While there have been shown what are at present considered to be preferred embodiments of the invention, it will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the scope of the invention as defined by the appended claims.
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Double-enveloped electric lamps having a self~mounting frame-assembly for supporting a light-source capsule within the outer envelope may be manufactured more simply and economically than double-enveloped lamps currently availabl;e without any sacrifice in the quality of the lamps.
BRIEF DESCRIPTION OF THE DRAWlNGS
FIG. 1 is a sectional view of one embodiment of the invention;
FIG. 2 is an enlarged sectional plan view along line 2-2 of FIG.
1 with parts removed for clarity;
FIG. 3 is an enlarged sectional view of the neck-portion of the outer envelope of the embodiment of the invention shown in FIG. l;
FlG. 4 is an enlarged pictorial view of a frame-assembly employed in the embodiment of the invention shown in FIG. l;
FIG. 5 is a pictorial view of a threaded lamp base;
FIG. 6 is an enlarged elevational view of one clamp portion of the frame-assembly shown in F16. 4;
FIG. 7 is a sectional view of another embodiment of the invention;
FIG. 8 is an enlarged sectional plan view along line 8-8 of FIG.
20 7, with parts removed for clarity;
~ I6. 9 is an enlarged elevational view of the neck-portion of the outer envelope of the embodiment of the invention shown in FI6. 7;
FIG. 10 is a pictorial view of a frame-assembly employed in the : 25 embodiment of the invention shown in FIG. 7;
122Ui5a~4 D-24,950 FIG. ll is a top v~ew of the frame-assembly used in the embodiment of the invention shown in FIG. 7.
BEST MODE FOR CARRYING OUT THE INVENTION
For a better understanding of the present inventiorl, together with other and further objects, advantages, and capabilites thereof, reference is made to the following disclosure and appended claims taken in conjunction with the above-described drawings.
As used herein, the term Ulight-source capsule" denotes a halogen capsule of a tungsten halogen incandescent lamp; an arc tube of an arc discharge lamp; or any light-emitting capsule within the outer envelope of a lamp.
The term ~elastic~l herein is defined as the property of a body, when defonmed, to return to its normal configuration automatically as the deforming forces are rem~ved. The tenm Ufriction" herein is defined to be the ~orce which opposes relative motion between two touching bodies caused by the respective properties of the surfaces of each body which are in contact ~ith each other. Neither ~elastic~ nor ~frictiona as used herein shall include any fonce which opposes relative motion between two bodies caused by the fusion of one body with the other, such fusion including any glass-to-glass or glass-to~metal seal.
Referring to the drawings with greater particularity. FI6. l shows one embodiment of the invention, being lamp 30 having a longitudinal axis L and comprising outer-envelope 32, light-source capsule 34, frame-assembly 36, and base 38. Outer-envelope 32 has a neck-portion 40. Capsule 34 in this instance is a tungsten halogen incandescent capsule with a first lead-in wire 42, a second lead-in wire 44, and a tungsten filament 45 extending between the internal terminantions of lead-in wires 42 and 44. Capsule 34 in this embodiment is mounted on frame 36 by means of lead-in wire 42.
- 122~504 , D-24,950 s FIG. 2 shows neck 40 having first groove 46 with inner-wall 47, and second groove 48 with inner-wall 49, both grooves being fonmed in neck ~0.
FIG. 3 shows that within groove 46, ridge 52 is formed adjacent to the brim of neck 40; likewise, ridge S4 is fonlled adjacent to the brim of neck 40 within groove 48. Annular ridge 50 circumscribes neck 40 adjacent to the ends of grooves 46 and 48 remote from the brim; ridge 50 is not confined within grooves 46 and 48.
Frame assembly 36 is il~ustrated in FIG. 4 and is characterized herein as being the ~clamp-on~ type. This characterization describes the manner in which frame-assembly 36 is mounted as will be described below. As may be seen in FlG. l, frame 36, with capsule 34 mounted thereon, is inserted into outer envelope 32 through neck 40 and positioned such that clamps 56 and 58 are aligned with grooves 46 and 48, respectively. Frame 36 may be pushed deeper into outer envelope 32. In so doing, clamp 56 will be spread open by ridge 52. ~hen frame 36 has been fully inserted into outer envelope 32, clamp 56 will spring back to its original shape because of the inherent elasticity of the material from which clamp 56 is constructed. Clamp 56 0ay be characterized as ~clamping on~
to ridge 52. ~hen frame 36 is mounted, re-entrant portion 65 Of clamp 56 clasps ridge 52. ln an identical manner, re-entrant portion 67 of clamp 58 clasps ridge 54. ThuS, clamps 56 and 58, through their re-entrant portions 65 and 67, exert elastic and frictional forces against neck 40 of outer envelope 32 which comprise the mounting means for frame 36 in this embodiment of the invention.
FIG. 5 is a pictorial view of a lamp base 38 comprising threaded shell 60 and insulated tip 62. In the embodiment of the invention shown in FIG. l, base 38 is characterized as a "push-on" type. This characterization describes the method of mounting base 38 on outer envelope 32, which is accomplished by pushing base 38 over neck 40 5(~4 D-24,950 and c~amps 56 and 58 toward ridge 50. In so mounting base 38, shell 60 ~ill compress prongs 64 and 66 toward inner walls 47 and 49, respectively, thereby preventing clamps 56 and 58 from opening, as well as insuring that clamps 56 and 58 will be tightly and securely mounted on outer envelope 32. Base 38, when mounted, reinforces the mounting means for frame 36.
Prongs 64 and 66 have sharply barbed tips 68 and 70, respectively. When base 38 has been fully mounted, tips 68 and 70 will bite into shell 60. Base 38, ~hen mounted, will defon~ pror,gs 64 and 66 into grooves 46 and 48, respectively. Elastic forces within these clamps will tend to return prongs 64 and 66 to their unextended positions. The elastic forces cause tips 68 and 70 of prongs 64 and 66, respectively, to press against shell 60 with sufficient force to imbed the sharply pointed barbs into shell 60.
Any attempted motion of base 38 away from ridge 50 or any attempted rotation of base 38, clockwise or counter-clockwise, about neck 40 will be prevented by prongs 64 and 66 which, being imbedded in ~hell 60, will hold or Ulock'' base 38 securely in its mounted position.
Thus, in this embodiment of the invention, base 3B cooperates ~ith clamps 56 and 58 and neck 40 in order to form locking means ~hereby frame 36, base 38, and outer envelope 32 will remain securely engaged despite jostling and use of laTp 30.
FIG. 6 is an enlarged elevational view of clamp 56 showing ang7e A, which preferably is greater than 45. ~hen base 38 is b~ing mounted, shell 60 depresses prong 64 into groove 46. Because of the freedom of motion into groove 46, clamp 56 does not resist the movement of base 38 over neck 40 toward ridge 50. For identical reasons, clamp 58 does not resist the same movement of base 38.
~hen base 38 is fully mounted, any movement of base 38 ahay from ridge 50 or any rotational movement of base 38 will be prevented by clamps 56 and 58.
.~ .
D-24,950 In this embodiment of the invention, base 38 is threaded. The thread on shell 60 is not essential to the locking means. A bayonet type base or another type of lamp base with or without thread may be employed with the sam~ locking means as described with this S embodiment and the desired results will be obtained. Barbed tips 68 and 70 are fabricated from a material sufficiently sharp and durable with respect to shell 60 that tips 68 and 70 will ~Ibiteu or imbed themselves into shell 60 when base 38 is mounted on neck 40.
The contact of tips 68 and 70 with shell 60 can form a suitable electrical connection between shell 60 and frame 36. In this embodiment, frame 36 is constructed from an electrically conducting material and lead-in 42 may be mounted on frame 36 such that a suitable electrical connection, as well as an adequate structural connection, is made between lead-in 42 and frame 36. Thus, lead-in 42 of capsule 34 is electrically connected, via frame 36 and shell 60, to one pole of an external power supply; the elastic nature of frame 36 will assist in maintaining the electrical sontact throughout the life of the lamp. The electrical circuit within lamp 30 is completed by electrically connecting lead-in 44 of capsule 34 to tip 62 of base 38, such as by soldering; tip 62 being electrically insulated from shell 60 of h se 38. Shell 60 and tip 62 of base 38 are constructed from an electrically conducting material.
FIG. 7 shows another embDdiment of the invention. Lamp 80 has a longitudinal axis L and comprises outer envelope 82, light-source capsule 84, frame-assembly 86, and threaded base 38. Outer envelope 82 has a neck-portion 90. In this instance, capsule 84 is a tungsten-halogen incandescent capsule with a first lead-in wire 92, a second lead-in wire 94, and a tungsten filament 95 extending between the internal terminations of lead-in wires 92 and 94.
Capsule 84 is mounted on frame 86 by means of lead-in wire 92.
- ~ 22~S04 D-24,950 Neck 90 is formed with a first-groove 96 and second-groove 98.
Groove 96 comprises three connecting grooves, namely first-connecting groove 100, second-connecting groove 102, and third-connecting groove 104. Groove 100 is formed in brim 114 of s neck 90 and runs from the inside surface 116 to outside surface 118 where it connects with groove 102.
Neck 90 has thread 106 formed therein; the thread extends approximately from brim 114 to ridge 117. Thread 106 is matched with the inside thread of base 38 sLch that base 38 may be mounted by being screwed onto neck 90. Groove 102 is fonned into outside surface 118 and thread 106. Groove 102 proceeds from brim 114 toward ridge 117 running parallel to central axis L and traversing thread 106 until groove 102 meets groove 104. Groove 104 is fo,rmed in outside surface 118 and thread 106; it is perpendicular to groove i5 102; it proceeds from groove 102 in the direction that thread 106 advances toward ridge 117.
Groove 98, comprising connecting grooves 108, 110, and 112, is fonmed opposite groove 96 in neck 90. Grooves 104 and 112 both point in the direction of advancing thread 106, i.e., in the direction of rotation of base 38 when base 3B is being mounted on neck 90.
FIG. 10 is a pictorial view of frame-assembly 86 which is characterized herein as being the ~slide-on~ type. This characterization describes the manner in which frame-assembly 86 is mounted. As may be seen in FI6. 7, frame 86, with capsule 84 mounted thereon, is inserted into outer envelope 82 through neck 90 and positioned such that formed-leg 120 is aligned with groove 96 and fo~ned-leg 128 is aligned with groove 98. lhiS is possible because leg 120 of frame 86 has been preformed to match groove 96 of neck 90 as follows: segment 122 fits into groove 100, segment 124 fits into groove 102; segment 126 fits into groove 104 at the intersection of groove 102 and 104; and segment 126 protrudes . D-24,950 _g tangentially from groove 104. In a similar manner, leg 128 of frame 86 has been preformed to match groove 98 of neck 90 such that segment 130 fits into groove 108; segmRnt 132 fits into groove 110;
segment 134 fits into groove 112 at the intersection of grooves 110 and 112; and segment 134 protrudes tangentially from groove 112.
FIG. 11 is a top view of.frame-assembly 86 showing angles B and C, each a right angle, which explains why segments 126 and 134 protrude tangentially from grooves 104 and 112, respectively, when frame 86 is mounted on neck 90. Thus, frame 86 is mounted on outer envelope 82 by "sliding on" frame 86 to neck 90 such that legs 120 and 128 fit into matched receiving grooves 96 and 98, respectively.
The threaded lamp base 38 also may be used with the lamp shown in FIG. 7. Base 38 is mounted on neck 90 by screwing base 38 onto thread 106 with frame 86 already fitted onto neck 90. In order to mount base 38 fully, protruding segments 126 and 134 of frame 86 must be depressed into grooves 104 aod 112-, respectively. Base 38 is characterized as a Uscrew-on" base because of the method of mounting. While depressed, segments 126 and 134 act as springs;
each segment exerts an elastic force against shell 60 of base 38.
m ese elastic forces do not i~pede the forward rotation of base 38 towRrd ridge 117 of neck 90, because both segments point in the direction of the mounting rotation. However, if base 38 is rotated in the direction of dismounting, barbed tips 136 and 138 of legs 1~0 and 128, respectively, will immediately bite into shell 60 and prevent further rotation of base 38 in the dismount direction.
Thus, once base 38 is fully mounted, base 38 is ~locked~ penmanently in place.
The mounting of base 38 also securely fixes frame 86. Base 38 depresses segments 126 and 134 tightly into grooves 104 and 112, respectively, and the spring action of both of these segments against shell 60 reinforces the security of the mounting means for frame 86. The entire shell of base.38 also assists in the mounting means for frame 86.
-- 122t~S04 D-24,950 ^10-In the embodiment shown in FI6. 7, the matched thread of neck 90 and base 38 permits base 3~ to be mounted by means of being screwed on neck,90. Barbed tips 136 and 138 can be formed from a suffice~tly sharp and durable material with respect to shell 60 to insure that the tips will bite into or become imbedded into shell 60 whereby the locking means will be implemented.
In the embodiment shown in FIG. 7, frame 86 is constructed from an electrically conducting material. The contact of tips 136 and 138 with shell 60 fonms a redundant electrical contact for one pole of an electrical circuit. Electrical power from an external source may be transmitted to capsule 8~ through frame 86 which is electrically connected to lead-in wire 92. The circuit is completed by electrically connecting lead-in wire 94 to tip 62 of base 38 which is electrically insulated from shell 60.
lS In a laboratory example of the em~odiment of FIG. 1, .020 inch (.051 centimeters) thick nickel-plated stainless steel was used for the fabrication of frame-assembly 36. Capsule 34 was mounted on frame 36 by welding lead-in 42 to frame 36.
In a laboratory example of the emboaiment of FI6. 7, fra~e 86 ~as constructed from .050 inch (1.27 centimeters) diameter nickle-plated steel wire. Capsule 84 ~as mounted to frame 86 by welding lead-in 92 to frame 86. In both embodiments, base 38 was an Edison base. The frame assemblies ~ere constructed by welding the respective component parts.
~n laboratory examples of both embodiments of the invention disclosed in FIG. 1 and FIG. 7, the wall thickness of the neck-portion of the outer envelope was greater than any of the other walls of the outer envelope in order to provide additional strength to the neck-portion of the lamps. The outer-envelopes ~ere fonmed from soda-lime glass Yia a blow-molding manu~acturing process.
-- lZ20S04 D-24,950 While there have been shown what are at present considered to be preferred embodiments of the invention, it will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the scope of the invention as defined by the appended claims.
~' .
... .
Claims (10)
1. A double-enveloped electric lamp comprising:
(a) An outer envelope formed from light-transmissive material, said outer envelope including a neck having mounting means formed therein;
(b) an inner envelope being a light-source capsule, said light-source capsule having two lead-in wires protruding therefrom;
(c) a frame assembly for mounting said light-source capsule within said outer envelope, said frame-assembly being formed from stiff electrically conductive material, said frame-assembly having first and second ends, one of said lead-in wires of said light-source capsule being mounted on and electrically connected to said first end, said second end being shaped so as to engage said mounting means of said neck by means of elastic and frictional forces; and (d) a base mounted on said neck, said base being engaged with said second end of said frame-assembly such that said frame-assembly is securely mounted on said mounting means of said neck by means of elastic and frictional forces, said base including two electrical poles insulated from each other, said second end of said frame assembly being in electrical contact with one of said poles, said other lead-in wire being electrically isolated from said frame-assembly and electrically connected to the other of said poles of said base.
(a) An outer envelope formed from light-transmissive material, said outer envelope including a neck having mounting means formed therein;
(b) an inner envelope being a light-source capsule, said light-source capsule having two lead-in wires protruding therefrom;
(c) a frame assembly for mounting said light-source capsule within said outer envelope, said frame-assembly being formed from stiff electrically conductive material, said frame-assembly having first and second ends, one of said lead-in wires of said light-source capsule being mounted on and electrically connected to said first end, said second end being shaped so as to engage said mounting means of said neck by means of elastic and frictional forces; and (d) a base mounted on said neck, said base being engaged with said second end of said frame-assembly such that said frame-assembly is securely mounted on said mounting means of said neck by means of elastic and frictional forces, said base including two electrical poles insulated from each other, said second end of said frame assembly being in electrical contact with one of said poles, said other lead-in wire being electrically isolated from said frame-assembly and electrically connected to the other of said poles of said base.
2. A lamp as described in Claim 1 wherein said mounting means of said neck includes two grooves, said second end of said frame-assembly includes two legs, and each of said legs is shaped to fit within one of said grooves, respectively.
3. A lamp as described in Claim 1 wherein said second end of said frame-assembly includes at least one sharply pointed barb such that after said base has been mounted said barb will be imbedded into said base whereby said base will be securely held in its mounted position.
4. A lamp as described in Claim 1 wherein said neck includes thread formed therein and wherein said base is formed so as to include matching thread whereby said base may be mounted by screwing said base onto said neck.
5. A lamp as described in Claim 1 wherein said inner envelope is a tungsten-halogen light-source capsule.
6. A method of constructing a double-enveloped electric lamp comprising the steps of:
(a) forming an outer envelope from light-transmissive material, said outer envelope including a neck having mounting means formed therein;
(b) forming an inner envelope, said inner envelope being a light-source capsule having two lead-in wires protruding therefrom;
(c) forming a frame-assembly from stiff electrically conductive material, said frame-assembly having first and second ends;
(d) forming a base, said base including two electrical poles insulated from each other;
(e) mounting one of said lead-in wires of said light-source capsule on said first end of said frame-assembly such that there is an electrical connection between said mounted lead-in wire and said frame-assembly;
24,950 -14-(f) engaging said second end of said frame-assembly with said mounting means of said neck by means of elastic and frictional forces such that said light-source capsule and said first end of said frame-assembly are positioned within said outer envelope;
(g) mounting said base onto said neck such that said base mechanically and electrically engages said second end of said frame-assembly whereby said second end of said frame-assembly is securely mounted on said mounting means of said neck by means of elastic and frictional forces and an electrical connection has been made between one of said electrical poles of said base and said second end of said frame assembly; and (h) isolating said second lead-in wire of said light-source capsule from said frame-assembly and electrically connecting said second lead-in wire to the other of said electrical poles of said base.
(a) forming an outer envelope from light-transmissive material, said outer envelope including a neck having mounting means formed therein;
(b) forming an inner envelope, said inner envelope being a light-source capsule having two lead-in wires protruding therefrom;
(c) forming a frame-assembly from stiff electrically conductive material, said frame-assembly having first and second ends;
(d) forming a base, said base including two electrical poles insulated from each other;
(e) mounting one of said lead-in wires of said light-source capsule on said first end of said frame-assembly such that there is an electrical connection between said mounted lead-in wire and said frame-assembly;
24,950 -14-(f) engaging said second end of said frame-assembly with said mounting means of said neck by means of elastic and frictional forces such that said light-source capsule and said first end of said frame-assembly are positioned within said outer envelope;
(g) mounting said base onto said neck such that said base mechanically and electrically engages said second end of said frame-assembly whereby said second end of said frame-assembly is securely mounted on said mounting means of said neck by means of elastic and frictional forces and an electrical connection has been made between one of said electrical poles of said base and said second end of said frame assembly; and (h) isolating said second lead-in wire of said light-source capsule from said frame-assembly and electrically connecting said second lead-in wire to the other of said electrical poles of said base.
7. A method of constructing a double-enveloped electric lamp as described in Claim 6 wherein in step (a) forming said mounting means includes forming two grooves in said mounting means; wherein in step (c) forming said second end of said frame-assembly includes forming two shaped legs of said second end, each of said legs being shaped to fit within one of said grooves, respectively; and wherein in step (f) engaging said second end of said frame-assembly with said mounting means includes inserting each of said shaped legs into the respective matching groove of said mounting means.
8. A method of constructing a double-enveloped electric lamp as described in Claim 6 wherein in step (c) forming said second end of said frame-assembly includes forming at least one sharply pointed barb on said second end.
-14a
-14a
9. A method of constructing a double-enveloped electric lamp as described in Claim 6 wherein in step (a) forming said neck of said outer envelope includes forming thread in said neck; wherein in step (d) forming said base includes forming a matching thread in said base; and wherein in step (g) mounting said base includes screwing said base onto said neck.
10. A method of constructing a double-enveloped electric lamp as described in Claim 6 wherein in step (b) forming a inner envelope includes forming a tungsten-halogen light-source capsule.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US46984183A | 1983-02-25 | 1983-02-25 | |
| US469,841 | 1983-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1220504A true CA1220504A (en) | 1987-04-14 |
Family
ID=23865245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000448138A Expired CA1220504A (en) | 1983-02-25 | 1984-02-23 | Electric lamp with self-mounting frame-assembly and methods of constructing same |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE898995A (en) |
| BR (1) | BR8400762A (en) |
| CA (1) | CA1220504A (en) |
| DE (1) | DE3406775A1 (en) |
| FR (1) | FR2541816B1 (en) |
| GB (1) | GB2136201B (en) |
| IT (1) | IT1221747B (en) |
| NL (1) | NL8400579A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4500948A (en) * | 1983-10-07 | 1985-02-19 | Gte Products Corporation | One-piece frame for an electric lamp |
| US4779021A (en) * | 1985-05-01 | 1988-10-18 | Gte Products Corporation | Electric lamp with improved self-mounting frame member |
| CA1267681A (en) * | 1985-05-01 | 1990-04-10 | Thomas Haraden | Electric lamp with improved self-mounting frame member |
| US6133676A (en) * | 1997-09-10 | 2000-10-17 | Chen; Chun Tsun | Double-enveloped halogen bulb provided with protuberances in the outer surface of the envelope |
| EP0903773A3 (en) * | 1997-09-17 | 1999-06-16 | Shanghai Viva Home Improvement Co., Ltd. | Double-enveloped halogen bulb |
| US6323588B1 (en) * | 1998-08-05 | 2001-11-27 | Osram Sylvania Inc. | Locking clip for a lamp base having first, second and third portions |
| US6488538B1 (en) * | 1999-11-02 | 2002-12-03 | Matsushita Electric Industrial Co., Ltd. | Tube lamp and its manufacturing method |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL31615C (en) * | 1930-09-18 | |||
| US2114175A (en) * | 1937-03-13 | 1938-04-12 | Gen Electric | Electric lamp or similar device |
| GB767971A (en) * | 1954-04-29 | 1957-02-13 | Gen Electric Co Ltd | Improvements in or relating to electric devices having a cap mounted on a glass neckpart of an envelope |
| NL89615C (en) * | 1955-04-23 | |||
| US3094640A (en) * | 1960-12-19 | 1963-06-18 | Sylvania Electric Prod | Harness for supporting high pressure arc discharge tube within outer envelope, and lamp formed thereby |
| US3218495A (en) * | 1962-12-06 | 1965-11-16 | Westinghouse Electric Corp | Arc tube mount and component therefor |
| FR1343948A (en) * | 1962-12-12 | 1963-11-22 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Flash light with protection against shards of glass |
| GB1054423A (en) * | 1963-04-22 | |||
| US3479548A (en) * | 1966-07-06 | 1969-11-18 | Airequipt Inc | Enveloped quartz iodine lamp |
| US4341975A (en) * | 1980-06-12 | 1982-07-27 | General Electric Company | Jacketed lamp having transversely mounted arc tube |
| NL8102594A (en) * | 1981-05-27 | 1982-12-16 | Philips Nv | ELECTRIC LAMP WITH A MECHANICALLY ATTACHED LAMP BASE. |
-
1984
- 1984-02-16 BR BR8400762A patent/BR8400762A/en not_active IP Right Cessation
- 1984-02-23 CA CA000448138A patent/CA1220504A/en not_active Expired
- 1984-02-23 IT IT19755/84A patent/IT1221747B/en active
- 1984-02-24 BE BE2/60349A patent/BE898995A/en not_active IP Right Cessation
- 1984-02-24 FR FR8402878A patent/FR2541816B1/en not_active Expired
- 1984-02-24 DE DE19843406775 patent/DE3406775A1/en not_active Withdrawn
- 1984-02-24 NL NL8400579A patent/NL8400579A/en not_active Application Discontinuation
- 1984-02-24 GB GB08404841A patent/GB2136201B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE898995A (en) | 1984-06-18 |
| GB8404841D0 (en) | 1984-03-28 |
| FR2541816A1 (en) | 1984-08-31 |
| IT1221747B (en) | 1990-07-12 |
| FR2541816B1 (en) | 1989-06-02 |
| BR8400762A (en) | 1984-10-02 |
| GB2136201B (en) | 1986-09-03 |
| IT8419755A0 (en) | 1984-02-23 |
| GB2136201A (en) | 1984-09-12 |
| NL8400579A (en) | 1984-09-17 |
| DE3406775A1 (en) | 1984-10-04 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |