US3329792A - Multicircuit pushbutton switches - Google Patents

Multicircuit pushbutton switches Download PDF

Info

Publication number
US3329792A
US3329792A US577729A US57772966A US3329792A US 3329792 A US3329792 A US 3329792A US 577729 A US577729 A US 577729A US 57772966 A US57772966 A US 57772966A US 3329792 A US3329792 A US 3329792A
Authority
US
United States
Prior art keywords
contact
cam
fingers
pushbutton
switch
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 - Lifetime
Application number
US577729A
Other languages
English (en)
Inventor
Edward A Jones
Robert C Carter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Precision Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE1790277A priority Critical patent/DE1790277C3/de
Priority to GB12173/66A priority patent/GB1133477A/en
Priority to GB35891/66A priority patent/GB1133478A/en
Priority to DE19661640798D priority patent/DE1640798B1/de
Priority to FR55515A priority patent/FR1472813A/fr
Application filed by Litton Precision Products Inc filed Critical Litton Precision Products Inc
Priority to US577729A priority patent/US3329792A/en
Application granted granted Critical
Publication of US3329792A publication Critical patent/US3329792A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
    • H01H13/56—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force
    • H01H13/58—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon the next application of operating force with contact-driving member rotated step-wise in one direction

Definitions

  • the invention comprises a multicircuit pushbutton switch having a plurality of movable spring finger contacts riding in parallel grooves.
  • a plurality of fixed contacts are disposed at various positions along the length of the grooves.
  • Various of the contacts in each array may be the two arrays of contacts slide with respect to each other as actuated by a pushbutton mechanism including a rotary cam.
  • a terminal header is provided to couple to the switch the circuits to be controlled.
  • This invention relates to electrical switches and, more particularly, to multicontact switch assemblies and pushbutton assemblies incorporated in such switches.
  • Illuminated pushbutton switching devices are used in the electrical and electronic fields, and in various industrial instruments to provide multicircuit switching and may include indication of the fact of the switching by a lamp incorporated therein. While this specification describes an illuminated switch, the same inventive concepts are equally applicable to a non-illuminated switch.
  • a multicontact electrical switch assembly includes a first and a second set of contact elements adapted for relative backand-forth motion, between two distinct switch positions, of the contact elements of the first set with respect to those of the second set.
  • the contact elements are spaced apart in a cylindrical configuration and the back-and-forth motion occurs axially of both configurations of contact elements.
  • a multicontact electrical switch assembly includes a first and a second set of contact elements adapted for relative back-and-forth motion, between two distinct switch positions, of the contact elements of the first set with respect to those of the second set. Different ones of the contact elements of the second set are disposed at diflerent locations along the path of relative motion of the contact element sets, so that at least one contact element of the second set is engaged by a corresponding contact element of the first set in only one of the two distinct switch positions.
  • an electrical switch assembly having two distinct axial switch positions, as combined with a pushbutton actuating mechanism, the combination being such that alternate changes of switch positions are brought about as a result of se quential pressure applications to the pushbutton.
  • the mechanism includes a rotatable and axially movable cam having an interrupted spiral-shaped cam surface for controlling said operation.
  • cam configurations can be used .to provide diiferent switching arrangements where two or three, or even more, distinct switch positions may be achieved. Thus, for more than two positions, each successive pressure application will turn the cam means through oneinterconnected. Electrical circuits are made and broken as 3,329,792 Patented July 4, 1967 third or other fraction of its cycle to position the contact elements at each such fraction of the cycle at different axial positions in order to achieve particular contact switching combinations.
  • the pushbutton assembly comprises a rotating and axially movable cam with three identical cam surfaces upon which there rides a tripodal cam actuator which is resiliently urged against the cam surfaces.
  • the pushbutton assembly is cooperatively engaged with a contact array comprising a plurality of dependent spring contact fingers extending skirt-like from and below the rim of an insulative supporting disc.
  • the contact fingers surround a fixed insulative fluted base, into the fl-utes of which are inserted contact elements that are engageable with the dependent contact fingers.
  • the contact elements in the fluted base are of different lengths and are positioned so as to make contact with predetermined ones of the dependent contact fingers in the various distinct switch positions.
  • the fluted base is fixed in the switch assembly and the contact elements therein are connected with respective external terminal pins in the base for making external plug-in contact with circuit receptacles provided therefor.
  • the base connections may be solder termiilials of various types, contact blades, or socket receptac es.
  • rotating cam and the movable contact array are positionable to upper or lower positions with respect to the fixed positions of the cam actuator and the fluted base.
  • the contact fingers of the contact array make interconnections with various contact elements on the fluted base and a great variety of connection combinations may be obtained.
  • the connections may be mo- ;nentary, push-push, momentary snap types or hold-down ypes.
  • the actuating mechanism in the illustrative embodiment is such that successive downward pressures upon the pushbutton alternately position the spring finger contact array in its upper or lower position with respect to the fixed contacts in the fluted base so as to provide at least a two-position switching arrangement.
  • the contact array is resiliently urged by a spring to a normally upper position.
  • a further object of this invention is to provide a pushbutton actuated -multicircuit switching means comprising a movable spring finger contact array axially positionable by a rotary cam with respect to a contact supporting base, or core, to make predetermined contact intercomlections with the contacts on said core in different axial positions of said spring finger contacts array.
  • Yet another object of this invention is to provide in a pushbutton actuated multicircuit switch means for sequentially positioning contact arrays within said switch into one or another of a cycle of several contact positions in response to successive actuations of the pushbutton.
  • FIGURE 1 is a partially cutaway and partially cross- .sectional view of a switch according to this invention, showing internal components;
  • FIGURES 2a and 2b are schematic representations of the contacting portions of a switch according to this invention showing two difierent positions thereof;
  • FIGURE 3 is an exploded View of the components of the switch
  • FIGURE 4 is an overall external View of a switch similar to that of FIGURE 1, reduced in size and including a typical socket connector therefor;
  • FIGURE 5 is a cross-sectional view of a switch according to this invention, showing in detail the lamp circuit thereof.
  • a metallic switch housing 16 having a threaded collar 11 at the neck portion 12 thereof for insertion in a panel or other mounting surface 13.
  • the switch housing is held in place in mounting surface 13 by a nut 14.
  • a locating pin 15 is provided in housing 11! which may be positioned in an appropriate recess or hole 16 in panel or mounting surface 13 to receive pin 15 and prevent the switch from rotating in the panel 13.
  • a plastic insulating cylinder 17 having an upper portion 13 and lower portion 19 fits into casing 10 to insulate the casing from interior components of the switch. It will be appreciated that the upper and lower portions 18 and 19 may be separate rather than integral, if such is desired for convenience of manufacture or assembly. It is desirable to provide means to prevent rotation of upper portion 18 during operation of the pushbutton mechanism as described below. In the illustrative embodiment, such rotation is prevented by an extension of pin 15 which pro trudes inside housing 16 to engage a hold 121 in cylinder 17. On the inner surface 21 of the upper portion 18 of insulating cylinder 17 inwardly projecting axially extending tracks or guides 21 of rectangular cross sections are provided.
  • Two guides 21 may be seen in FIGURE 1 in exaggerated perspective in the cutaway portion of the upper portion 18 of cylinder 17, but there are three such guides 21 in the illustrative embodiment, as shown in FIGURE 3.
  • the lower ends of tracks or guides 21 are bevelled to match the cooperating surfaces of cam 50 as described further below.
  • a plunger drive cylinder 22 Within insulating cylinder 17 is a plunger drive cylinder 22.
  • Drive cylinder 22 has an upper cup 23 and a guide pin 24 of smaller diameter depending therefrom.
  • Cup 23 is slidable within upper portion 18 of insulating cylinder 17 and includes a flange 27 separating pin 24 from cup 23.
  • flange 27 In the periphery of flange 27 are notches or grooves 25 to accommodate the tracks or guides 21 of the cylindrical upper portion 18 of cylinder 17.
  • plunger 22 is mounted for aXial sliding motion Within the upper portion 18 of cylinder 17 along the guides 21, but it cannot rotate because notches 25 accommodate the guides or tracks 21.
  • a cam actuator 28 having three dependent fingers 29 and a central aperture 30 fits over guide pin 24 and abuts flange 27 of plunger 22. Adjacent the fingers 29, three notches 26 are provided in the cam actuator 28, each of the notches accommodating one of the guides 21 to permit axial sliding motion, but prevent rotation of the actuator. Consequently, both drive cylinder 22 and actuator 28 slide up and down along the tracks or guides 21.
  • a spring finger contact assembly 32 is made up of two discs 33, 34 between which at least one, preferably a number of contact groups 35 are riveted as shown in the cutaway portion 36 (FIGURE 3) of assembly 32.
  • a rivet 39 holds together each of the contact finger array groups 35 with lower disc 3
  • the spring finger contacts are shown as a group 35 of three fingers. It should be clear that any contact combination of two or more fingers such as that designated 35 can be provided for whatever interconnection operation is desired in a switch according to this invention. The detailed operation as described further below will make this clear.
  • eyeletbearing arrangement 37 shown as it appears prior to peening over the top 38 thereof in the exploded view of FIG- URE 3.
  • the inner wall of opening 44) through eyelet-bearing 37 is the bearing surface for slidably guiding pin 24.
  • the base or flange surface 41 of eyelet 37 rests upon spring 42 which fits about the guide pin 24.
  • a ring-shaped cam 51 sits upon the upper disc 33 of spring finger contact array 32 with pin 24 extending through the cam.
  • the cam is mounted for rotational motion about the axis of the assembly, when actuated for such motion.
  • the cam is axially movable between two end positions, and in this axial motion the contact array assembly 32 follows the cam, as both the assembly 32 and the cam are urged upward by spring 42, and moved downward upon actuation of the pushbutton.
  • the cam 59 has three axially extending recesses, or slots, one being shown in FIGURE 3 as 65, which separate three spiral-shaped ramps, such as 66, about the periphery of the cam 5t).
  • cam 50 As a ring with three axially extending slots 65 would actually fall apart to form three separate pieces, the cam surfaces of cam 50 are supported by an internal, smaller diameter cylinder designated 543a in FIGURES 3 and 5. Of course, the entire cam 50', including inner ring 5%, may be manufactured as one integral unit.
  • the slots 65 with the inner ring 50a form axial recesses or channels which, in operation, alternately accommodate guides or tracks 21 and fingers 29 as explained in detail below.
  • Ramps 66 constitute cylindrical spiral or helical surfaces, each ramp being divided into two sections by an upward extension sea which terminates in an edge constituting an upwardly shifted section of the spiral ramp, as shown in FIGURE 1.
  • the width of each of the fingers 29 and protrusions 66a is about equal.
  • each protrusion 66a is positioned toward the lower end of the ramp which it divides, so that the higher, wider portion, seen near the center in FIGURE 1, is suificiently wide to receive simultaneously, one next to the other, one of the fingers 29 and one of the tracks or guides 21 passing through notches 25 and 26, the guides having been partly omitted in FIGURE 1 for the sake of clarity.
  • the lower continuation of a ramp 66 appearing at the right-hand side of protrusion 66a in FIGURE 1, is illustrated as having about the width of a single finger 29, or one guide 21 since in operation it accommodates only one of them at a time as explained further below.
  • the slots 65, ramps 66 and ramp protrusions 66a cooperate with the cam actuator fingers 29 of cam actuator 28, and guides 21 in the following manner.
  • Cam actuator 28 is raised and lowered within upper portion 18 of cylinder 17 by the application of pressure to pushbutton 1% and thereby to plunger 22.
  • pushbutton is in its upper position.
  • Actuator 28 is urged against flange 27 at the bottom of cup 23 by spring 31 which is partially compressed between actuator 28 and contact assembly 32.
  • spring 31 which is partially compressed between actuator 28 and contact assembly 32.
  • actuator 28 is in its upper position as well.
  • assembly 32 is in its upper position with respect to fluted base 45 and cam 50, which rides atop assembly 32, is in its upper position. Assembly 32 is urged upward by spring 42 which is partially compressed between assembly 32 and the bottom of annular groove or depression 46 in base 45.
  • cam 50 When cam 50 has moved downward to the point where the tops of ramps 66 are below the bevelled lower edges of guides 21, it is able to rotate and does rotate as a result of the torque resulting from the pressure between fingers 29 of actuator 28 and ramps 66. Rotation of actuator 28 is prevented by the engagement of guides 21 with notches 26. Cam 50 rotates through a small angle until the vertical trailing edges of protrusions 66a come into contact with the vertical leading edges of fingers 29. In this position of cam 50, guides 21 are located above the uppermost portions of ramps 66 where, in the initially described configuration shown in FIGURE 1, fingers 29 were previously stationed.
  • cam 50 is again enabled to rotate and does so as a result of the torque produced by ramps 66 hearing upwardly against the bevelled lower edges of guides 21 as cam 50 is urged upward by spring 42.
  • Cam 50 rotates through another small angle until the vertical trailing edges of protrusions 66a come into contact with the vertical leading edges of guides 21.
  • Actuator 28 and plunger 22 continue to move upward under the influence of spring 31 until flange 27 is stopped by an internal ridge 102 at the top of upper portion 18 of cylinder 17, while cam 50 is locked in its lower position with respect to cylinder 17 and assembly 32 is held by cam 50 in its lower position with respect to fluted base 45 as shown in FIGURE 2(b).
  • plunger 22 If pressure is again applied to pushbutton 100, plunger 22 is depressed, spring 31 is compressed and actuator 28 moves downwardly until the bevelled lower edges of fingers 29 contact the upper edges of protrusions 66a. As plunger 22 continues to move downward, fingers 29 move cam 50 downward with respect to guides 21. When the upper edges of protrusions 66a descend below the bevelled lower edges of guides 21, cam 50 again is enabled to rotate and does so initially as a result of the torque produced by the bevelled lower edges of fingers 29 bearing on the upper edges of protrusions 66a.
  • cam 50 rotates through an initial small angle
  • contact between fingers 29 and protrusions 66a ceases and cam 50 moves upwardly under theurging of spring 42 until the lower portions of ramps 66 contact the bevelled lower edges of fingers 29 and a torque is again produced which causes cam 50 to rotate through an additional small angle until fingers 29 drop into slots 65 and rotation is stopped by contact between the verticalleading edges of fingers 29 and the vertical trailing edges of ramps 66.
  • further axial upward movement of cam 50 is prevented by contact between the bevelled lower edges of guides 21 and the lower portions of ramps 66.
  • cam 50 is again enabled to rotate and does so as a result of the torque produced by the bevelled lower edges of guides 21 bearing on the lower portions of ramps 66. Rotation continues through a small angle until guides 21 drop into slots 65 6 and the vertical leading edges of guides 21 come into contact with the vertical trailing edges of ramps 66. With guides 21 in slots 65, cam 50 is free for axial upward movement which continues under the urging of spring 42 until the upper portions of ramps 66 contact the bevelled lower edges of fingers 29. Cam 50 and assembly 32 are then in their upper positions with respect to cylinder 17 and base 45, and the switch is again in the configuration illustrated in FIGURE 1.
  • contact array 32 is in its lower position 60 as shown in FIGURE 2(b).
  • guide pin 24 rests on spring 43 which is inserted in the center aperture 44 of contact base 45.
  • Base 45 carries a protrusion 103 for engagement with a not-ch 104 in the lower edge of cylinder 17 to prevent relative rotation of cylinder 17 and base 45.
  • contact base 45 is fluted as shown at 47, 48, 49, see also FIGURE 3.
  • a contact member such as those designated 51, 52, 53.
  • contact member 51 is a short section near the top of base 45; contact member 52 is a full-length contact member; and contact member 53 is a short member near the bottom of its flute in base 45.
  • any number of contact combinations such as those designated 35 may be used in any combination of arrays.
  • contacts 35 were a two-finger arrangement, or grouping, a single-pole single-throw operation is achieved. With a pair of three-finger groupings 35, double-pole double-throw contact is possible, utilizing two groupings of fixed contact members 51, 52, 53.
  • a variety of other combinations of fingers and fixed contacts on the base 45 may be included. As the number of combinations in the array increases or decreases, so may the diameter of the array 32 and base 45. By adjusting the .relative lengths or positions of contacts 51, 52, 53 switching action before-break or any other desired form.
  • Contact base 45 is supported on a header assembly 55 having a plurality of pins 56 depending therefrom. There will normally be as many pins 56 on header 55 as there are contact containing flutes, or grooves, in contact base 45, and each pin will be electrically connected to one of the contacts in the flutes or grooves.
  • a socket receptacle 57 is provided :as a separate unit for mounting in a chassis or similar assembly to receive the pins 56 of header 55.
  • the socket receptacle 57 may be of such configuration as to be insertable into printed circuit boards to make switches according to this invention capable of being assembled in arrays of such switches on plug-in printed circuit board assemblies, Receptacle 57 may also have contacts of the blade type so as to be easily connectable in wiring harness assemblies, or it may have terminal pins such as 58, illustrated in FIGURES 3 and 4.
  • the insulative contact base 45 has fixed metallic contact elements 51, 52, 53 therein within flutes, or grooves, 47, 48, 49 thereof.
  • contacts 51, 52, 53 are connected to terminal pins 56 in header 55.
  • the spring finger contact array 32 is movable over base 45.
  • the fingers 35 of array 32 are in the form of a circular comb.
  • the contact fingers 35 in various contact combinations with the contact elements 51, 52, 53 of different lengths in the flutes 47, 48, 49 in base 45 make a set of connections in an upper position 61 and different connections in a lower position 60. For example, in position 61 connection between contact elements 51 and 52 is completed through fingers 35. In position 60, connection between contact elements 52 and 53 is completed through fingers 35.
  • Spring finger contact array 32 is held in a normally upward position 61 by spring 42 interposed between the bottom 41 of eyelet 37 of assembly 32 and base 45, see FIGURE 5.
  • spring 42 interposed between the bottom 41 of eyelet 37 of assembly 32 and base 45, see FIGURE 5.
  • Momentary contact operation can be achieved by the omission of elements 28, 31 and 50, permitting plunger 22 to drive assembly 32 directly up and down with respect to base 45.
  • FIGURES 3 and 5 there is shown a detail view, in partial cross section, of the lamp-operatnig portion of the pushbutton switch according to this invention.
  • the contact base 45 is insulative and fixed in the assembly of the switch.
  • a central bore is provided therein at 44 in which the spring 43 is placed.
  • Guide pin 24 is hollow and an insulative sleeve 70 is inserted into the pin 24 so as to insulate pin 24 from elements in the interior thereof.
  • Sleeve 70 has a flange 69 which separates and insulates the bottom 80 of guide pin 24 from the flange 81 of pin 73 within insulative sleeve 70.
  • Lamp circuit spring 72 separates a contact pin 71 having an enlarged end portion 83 from pin 73 and urges pin 71 upwardly away from 73.
  • Spring 72 provides electrical continuity between pins 71 and 73.
  • lamp 74 which has a base or shell 75 and center contact 76 separated from base 75 by insulator 77, is inserted in a retainer 78 and held in place thereby.
  • lamp retainer 78 is provided with resilient extensions 69 that engage notches such as 62 in plunger cup 23.
  • the pushbutton cover 100 is engaged by retainer 78 also.
  • Center lamp terminal 76 makes contact through pin 71, 83, spring 72, pin 73 and spring 43 with terminal pin 85 in base 45.
  • the shell terminal 75 of lamp 74 is in electrical contact with plunger cup 23, which in turn is in contact with spring 31 through cam actuator 28 and eyelet 37 which by its flange 41 through outer spring 42 completes the electrical circuit to terminal pin 84.
  • the insulating sleeve 70 with its flange 69, which separates plunger 24 from pins 71 and 73, though shown in FIGURE 3 has been omitted from FIGURE 5. This has been done for the sake of clarity of the drawing and it must be borne in mind that the elements 71, 83, 72, 73 and 81, is accommodated in, or shown in contact with plunger 24 are in reality electrically insulated therefrom.
  • lamp circuit terminals 84 may be connected through some of the pin terminals 56 to external power connections 50 as to be energized upon the occurrence of one or the other of the positions of contact array 32 (position 60 or 61) to complete the power circuit to lamp 7 4, lighting the lamp for the desired indicating function.
  • the circuit arrangements may include a break in the lamp circuit wherein pin 24 can be made to move to close the circuit at center contact 76 so that lamp 74 lights only when pressure is applied to pushbutton 100.
  • An electrical switch comprising:
  • a base member having a plurality of longitudinally extending parallel grooves
  • an array of spring finger electrical contact elements having a plurality of fingers positioned in the grooves of said base member and longitudinally movable therein for making electrical contact with selected ones of said plurality of contact elements in predetermined longitudinal positions of said fingers with respect to said grooves.
  • said base member comprises a terminal connection header having a plurality of terminal pins therein, particular ones of the contact elements in said grooves electrically connected to particular one of said terminal pins.
  • said means for moving said array comprises pushbutton means, a rotary cam mounted for axial motion along its axis of rotation and engaging said array, means engaging said pushbutton means and engageable with said rotary cam for actuating said cam to axial and rotational motion, the axial motion of said cam producing a corresponding longitudinal motion of said spring finger contact elements in said grooves.
  • a pushbutton switch comprising:
  • a movable switching means having an array of dependent spring finger contacts mounted for axial movement to first and second axial positions with respect to said fixed array, different sets of contacts of said fixed and movable arrays in electrical contact in said first and second axial positions, selected contacts of said movable array electrically interconnected to provide predetermined connections between cOntacts of said fixed array in said first and second axial positions;
  • rotary cam means engaging said pushbutton means and including means engaging said movable switching means and adapted to selectively position said spring finger contacts in said first and second axial positions upon successive operations of said pushbutton means.

Landscapes

  • Push-Button Switches (AREA)
US577729A 1965-04-01 1966-09-07 Multicircuit pushbutton switches Expired - Lifetime US3329792A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE1790277A DE1790277C3 (de) 1965-04-01 1966-03-18 Druckknopfschalter
GB12173/66A GB1133477A (en) 1965-04-01 1966-03-18 Electrical switch assemblies
GB35891/66A GB1133478A (en) 1965-04-01 1966-03-18 Electrical switch assemblies
DE19661640798D DE1640798B1 (de) 1965-04-01 1966-03-18 Elektrischer Schalter fuer mehrere Stromkreise
FR55515A FR1472813A (fr) 1965-04-01 1966-03-29 Commutateur électrique
US577729A US3329792A (en) 1965-04-01 1966-09-07 Multicircuit pushbutton switches

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44468765A 1965-04-01 1965-04-01
US577729A US3329792A (en) 1965-04-01 1966-09-07 Multicircuit pushbutton switches

Publications (1)

Publication Number Publication Date
US3329792A true US3329792A (en) 1967-07-04

Family

ID=27034015

Family Applications (1)

Application Number Title Priority Date Filing Date
US577729A Expired - Lifetime US3329792A (en) 1965-04-01 1966-09-07 Multicircuit pushbutton switches

Country Status (3)

Country Link
US (1) US3329792A (de)
DE (2) DE1640798B1 (de)
GB (2) GB1133477A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499126A (en) * 1968-07-24 1970-03-03 Litton Precision Prod Inc Electrical contact assembly with ramp guide
JPS4725893Y1 (de) * 1969-02-10 1972-08-11
FR2399725A1 (fr) * 1977-08-05 1979-03-02 Arrow Hart Europe Ltd Commutateur electrique et son dispositif de manoeuvre
US4371759A (en) * 1981-01-07 1983-02-01 Cherry Electrical Products Corporation Encoding switch

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022404C2 (de) * 1980-06-14 1982-09-02 Fa. Leopold Kostal, 5880 Lüdenscheid Elektrischer Drucktastenschalter
DE3142070A1 (de) * 1981-10-23 1983-05-19 Brown, Boveri & Cie Ag, 6800 Mannheim Elektrischer installationsschalter
DE3214241C2 (de) * 1982-04-17 1986-04-24 ddm hopt + schuler GmbH & Co KG, 7210 Rottweil Schalter, insbesondere zum Einbau in Montageplatten
CN104599882B (zh) * 2015-01-08 2017-05-17 深圳雷柏科技股份有限公司 可自由换轴机械键盘

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2162528A (en) * 1937-07-31 1939-06-13 Connecticut Telephone And Elec Switch mechanism
US3219781A (en) * 1963-06-10 1965-11-23 Radon Corp Electromagnetic relay with sliding leaf spring movable contacts

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2106581A (en) * 1936-10-31 1938-01-25 Gen Electric Electric switch
BE512845A (de) * 1951-07-20
DE1039602B (de) * 1952-11-14 1958-09-25 J H Joachim Seeger Schalter, insbesondere Hochfrequenzschalter
US2814680A (en) * 1954-05-19 1957-11-26 Westinghouse Air Brake Co Miniature circuit controllers
US3149209A (en) * 1956-04-02 1964-09-15 James P Watson Multicontact switch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2162528A (en) * 1937-07-31 1939-06-13 Connecticut Telephone And Elec Switch mechanism
US3219781A (en) * 1963-06-10 1965-11-23 Radon Corp Electromagnetic relay with sliding leaf spring movable contacts

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499126A (en) * 1968-07-24 1970-03-03 Litton Precision Prod Inc Electrical contact assembly with ramp guide
JPS4725893Y1 (de) * 1969-02-10 1972-08-11
FR2399725A1 (fr) * 1977-08-05 1979-03-02 Arrow Hart Europe Ltd Commutateur electrique et son dispositif de manoeuvre
US4371759A (en) * 1981-01-07 1983-02-01 Cherry Electrical Products Corporation Encoding switch

Also Published As

Publication number Publication date
DE1790277B2 (de) 1974-05-09
GB1133477A (en) 1968-11-13
DE1790277C3 (de) 1975-01-02
DE1640798B1 (de) 1972-05-25
GB1133478A (en) 1968-11-13
DE1790277A1 (de) 1972-11-09

Similar Documents

Publication Publication Date Title
US4891476A (en) Index rotary switch
US5049709A (en) Index rotary switch with rotor contact member having L-shaped arms
US4531033A (en) Keyboard for initiating switching operations or switching signals associated with respective symbols on the surfaces of the keys
US3329792A (en) Multicircuit pushbutton switches
US3499126A (en) Electrical contact assembly with ramp guide
US3751618A (en) Push-switch with spring biased plunger
US5001316A (en) Push switch with printed terminal board
US5145059A (en) Switch
US3118026A (en) Push button switch structure
US3193628A (en) Multiple circuit controller switch with elongated flexible contact member
US3350530A (en) Switches for use with flexible printed circuits
US4996401A (en) Switch
US6365849B1 (en) Composite switch
USRE27016E (en) Plkctric limit switch having a diagonally divided housing, a detachable actuator, and mechanisms for causing selected operation of a pushbutton snap switch
US8803017B2 (en) Push button switch
US3920943A (en) Electrical switch
US4668845A (en) Modular lamp socket and switch device
GB1369897A (en) Push-button switch
US3665127A (en) Thumbwheel switch with floatingly positioned actuator
US2748210A (en) Electric switches
US4575592A (en) Electrical switch
US3261929A (en) Sub-miniature selector device with eccentrically displaced contact wiper apparatus
US3281552A (en) Cam operated rotary switch using leaf spring and overlying actuator
US3301971A (en) Electric switch with improved disk and contact structure
US2681393A (en) Switch