US2801399A - Circuit breaker - Google Patents

Circuit breaker Download PDF

Info

Publication number
US2801399A
US2801399A US498635A US49863555A US2801399A US 2801399 A US2801399 A US 2801399A US 498635 A US498635 A US 498635A US 49863555 A US49863555 A US 49863555A US 2801399 A US2801399 A US 2801399A
Authority
US
United States
Prior art keywords
conductive
tube
bodies
apex
opening
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
US498635A
Inventor
Loyal T Dunn
George F Kuhn
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to US498635A priority Critical patent/US2801399A/en
Application granted granted Critical
Publication of US2801399A publication Critical patent/US2801399A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/28—End pieces consisting of a ferrule or sleeve
    • H01R11/281—End pieces consisting of a ferrule or sleeve for connections to batteries
    • H01R11/287—Intermediate parts between battery post and cable end piece
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/923—Separation or disconnection aid
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S439/00—Electrical connectors
    • Y10S439/952—Jumper for use with specific apparatus

Definitions

  • This invention relates to improvements in electric circuit breakers, and more particularly to a device of this kind especially although not exclusively adapted to be interposed between and connected to the battery cable leading to the starter motor of an automobile electrical system and the related post of the battery, the device having a removable circuit closing element which when removed precludes the flow of current from the battery to the starter motor, the primary object of the invention being to provide a simple, practical and etlicient device of this character which enables quickly and easily breaking the electrical circuit for the purpose of removing dangerof fire and other damage, including depletion of the battery, resulting from short circuits in the electrical system, as well as enabling'a mechanic to break the circuit while working upon .components of the electrical system, and quickly and easily restore or close the circuit whendesired.
  • Other important objects and advantageous features of the invention will be apparent from the following description and the accompanying drawings, wherein, merely for purposes of illustration, a specific embodiment ofthe invention is set forth in detail.
  • Figure 1 is a top plan view showing the device installed on a battery terminal and related battery cable
  • Figure 2 is an enlarged vertical longitudinal section taken on the line 2-2 of Figure 1;
  • Figure 3 is a transverse vertical section taken on the line 3-3 of Figure 2;
  • Figure 4 is a perspective view of the removable element.
  • the number 5 generally designates a conventional automotive storage battery having a terminal or post 6 to which the clamp 7 of the usual battery cable 8, leading to the starter motor (not shown), is usually connected.
  • a circuit breaker device generally designated 9, is interposed between and connected to the cable clamp 7 and the battery post 6.
  • the circuit breaker device 9 comprises a preferably fibre or other suitable insulating material cylindrical tube 10 forming an insulated casing for two lead or other suitable conductive material bodies 11 and 12.
  • the body 11 has an outer end 13 flush with the adjacent end 14 of the tube 10 from which projects a battery post clamp 15 which is located below the axis of the body 11 and parallel thereto, and involves the usual split ring 16 and clamping bolt 17, by means of which the device 9 is electrically and structurally connected to the post 6 of the battery 5 to preferably project laterally therefrom as shown in Figure 1.
  • the inner end 18 of the body 11 is plane and is axially spaced from the body 12, declines at a slight inward angle, and is formed with a transversely extending horizontal, rounded groove 19.
  • the body 12 has an outer end 22 ilush with the adjacent end 23 of the tube 10, and an inner plane end 24 which declines at a similar but opposite angle from the inner end 18 of the body 11, whereby a truncated V-shaped chamber 25 is formed between the ends 18 and 24 and the bottom wall of the tube 10.
  • the end 2,4 of the body 12 is formed with Ia groove 26 like the groove 19, and the top wall of the tube 10 is formed with a rectangular opening 27 registered with the wider or upper end of the chamber 25.
  • the body 12 has at its outer end a projection 28, similar in form to the battery post 6, which rises from the body 12 through an opening 29 provided in the top wall of the tube 10, and on which is adapted to be clamped the clamp 7 of the battery cable 8, as shown in Figure 1. It will be obvious that the bodies 11 and 12 are both spaced from and insulated from each other so that current cannot ow from the battery 5 to the cable 8 without an extraneous connection being made between the bodies 11 and 12.
  • the device 9 provides for this purpose ⁇ a removable connective or connector element or insert 30 which comprises a V-shaped conductive spring bar 31, preferably formed of flat copper laminations or strips 32 soldered or otherwise-secured in superimposed relation.
  • the spring bar 31 is proportioned to be inserted downwardly through the tube opening 27 into the chamber 25 with the apex portion 33 of the insert engaging the bottom of the charnber, the legs 34 of theinsert being required to be somewhat compressed toward each other to accomplish the insertion.
  • the legs 34 of the insert forcibly engage the innerends 18 and 24 of the conductive bodies 11 and 12, respectively, and electrically connect these bodies and thereby close an electricalcircuit from the battery post 6 to the cable 8 which-can be quickly and easily broken, whenever desired, simply by pulling the insert 30 up out of the chamber 25.
  • the legs 34 are provided on their outer sides with transverse ribs 36 which engage in the grooves 19 and 26 in the inner ends of the conductive bodies 11 and 12, respectively.
  • the legs 34 have free end portions 37 which project above the tube 10 when the insert 30 is in place in the chamber 25, which are covered with rubber or other suitable insulation, as indicated at 38, and which form linger pieces or grips for manual manipulation of the insert 30 into and out of connective position in the chamber 25.
  • a block 39 of compressible rubber is positioned between and secured in suitable manner to the lower part of the legs 34 and the apex portion 33.
  • a pair of conductive bodies insulating means mounting said bodies in endwise relation with ends thereof facing in ⁇ spaced relation, said facing ends being inclined at opposite angles with respect to the longitudinal axes of said bodies, and an insert comprising a V-shaped bar of conductive spring material having divergent arms normally tensioned away from each other at a distance greater than the distance between the facing ends of said conductive bodies, said V-shaped bar being removably inserted in the space between said facing ends with its arms in compressed condition and electrically engaging the facing ends of and electrically connecting said conductive bodies.
  • a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped conductive spring bar having an apex and armsdiverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward ⁇ each other and engaging the inner ends of the conductive bodies.
  • a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped conductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends: of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engagedl withA the tube side wall'at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, one of said conductive bodies having a battery post clamp thereon and the other conductive body a post arranged to be embraced by a battery cable clamp.
  • a non-conductive tube having a side wall, conductive bodies'secured ⁇ in opposite ends of said tube, said bodies having'inner ends in spaced relation to each other, aV-shaped conductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between theeinner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, each of said arms and the related inner ends of the conductive bodies having interengaged rib and groove means.
  • a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped con ductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, each of said arms and the related inner ends of the conductive bodies having interengaged rib and groove means, comprising ribs on the arms and grooves in the inner ends of the conductive bodies.
  • a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped conductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, and a block of'resilient compressible material positioned between and secured to the arms of said V-shaped conductive bar;

Landscapes

  • Connection Of Batteries Or Terminals (AREA)

Description

July 30, `1957 L, T. DUNN ETAI.
CIRCUIT BREAKER Filed April 1I 1955 United States Patent O CIRCUIT BREAKER Loyal T. Dunn, Oakmont, and George F. Kuhn,
Verona, Pa.
Application April 1, 1955, Serial No. 498,635
6 Claims. (Cl. 339-224) This invention relates to improvements in electric circuit breakers, and more particularly to a device of this kind especially although not exclusively adapted to be interposed between and connected to the battery cable leading to the starter motor of an automobile electrical system and the related post of the battery, the device having a removable circuit closing element which when removed precludes the flow of current from the battery to the starter motor, the primary object of the invention being to provide a simple, practical and etlicient device of this character which enables quickly and easily breaking the electrical circuit for the purpose of removing dangerof fire and other damage, including depletion of the battery, resulting from short circuits in the electrical system, as well as enabling'a mechanic to break the circuit while working upon .components of the electrical system, and quickly and easily restore or close the circuit whendesired. Other important objects and advantageous features of the invention will be apparent from the following description and the accompanying drawings, wherein, merely for purposes of illustration, a specific embodiment ofthe invention is set forth in detail.
In the drawings, wherein like numerals designate like throughout the several views:
Figure 1 is a top plan view showing the device installed on a battery terminal and related battery cable;
Figure 2 is an enlarged vertical longitudinal section taken on the line 2-2 of Figure 1;
Figure 3 is a transverse vertical section taken on the line 3-3 of Figure 2; and
Figure 4 is a perspective view of the removable element.
Referring in detail to the drawings, the number 5 generally designates a conventional automotive storage battery having a terminal or post 6 to which the clamp 7 of the usual battery cable 8, leading to the starter motor (not shown), is usually connected. In accordance with the present invention a circuit breaker device, generally designated 9, is interposed between and connected to the cable clamp 7 and the battery post 6.
The circuit breaker device 9 comprises a preferably fibre or other suitable insulating material cylindrical tube 10 forming an insulated casing for two lead or other suitable conductive material bodies 11 and 12. The body 11 has an outer end 13 flush with the adjacent end 14 of the tube 10 from which projects a battery post clamp 15 which is located below the axis of the body 11 and parallel thereto, and involves the usual split ring 16 and clamping bolt 17, by means of which the device 9 is electrically and structurally connected to the post 6 of the battery 5 to preferably project laterally therefrom as shown in Figure 1. The inner end 18 of the body 11 is plane and is axially spaced from the body 12, declines at a slight inward angle, and is formed with a transversely extending horizontal, rounded groove 19. 'Ihe sides of the body 11 have legs 20 which project into holes 21 in the tube 10 to preclude rotation and longitudinal movement of the body 11 relative to the tube 10. Similar legs 20' on the 2,801,399 Patented July 30, 1957 ICE body 12 project through holes 21' in the tube 10 for the same purpose.
The body 12 has an outer end 22 ilush with the adjacent end 23 of the tube 10, and an inner plane end 24 which declines at a similar but opposite angle from the inner end 18 of the body 11, whereby a truncated V-shaped chamber 25 is formed between the ends 18 and 24 and the bottom wall of the tube 10. The end 2,4 of the body 12 is formed with Ia groove 26 like the groove 19, and the top wall of the tube 10 is formed with a rectangular opening 27 registered with the wider or upper end of the chamber 25. The body 12 has at its outer end a projection 28, similar in form to the battery post 6, which rises from the body 12 through an opening 29 provided in the top wall of the tube 10, and on which is adapted to be clamped the clamp 7 of the battery cable 8, as shown in Figure 1. It will be obvious that the bodies 11 and 12 are both spaced from and insulated from each other so that current cannot ow from the battery 5 to the cable 8 without an extraneous connection being made between the bodies 11 and 12.
The device 9 provides for this purpose `a removable connective or connector element or insert 30 which comprises a V-shaped conductive spring bar 31, preferably formed of flat copper laminations or strips 32 soldered or otherwise-secured in superimposed relation. The spring bar 31 is proportioned to be inserted downwardly through the tube opening 27 into the chamber 25 with the apex portion 33 of the insert engaging the bottom of the charnber, the legs 34 of theinsert being required to be somewhat compressed toward each other to accomplish the insertion. As a result, the legs 34 of the insert forcibly engage the innerends 18 and 24 of the conductive bodies 11 and 12, respectively, and electrically connect these bodies and thereby close an electricalcircuit from the battery post 6 to the cable 8 which-can be quickly and easily broken, whenever desired, simply by pulling the insert 30 up out of the chamber 25. To secure in the insert 30 in connecting relation in the :chamber 25 against displacement therefrom by vibration or the like, the legs 34 are provided on their outer sides with transverse ribs 36 which engage in the grooves 19 and 26 in the inner ends of the conductive bodies 11 and 12, respectively.
The legs 34 have free end portions 37 which project above the tube 10 when the insert 30 is in place in the chamber 25, which are covered with rubber or other suitable insulation, as indicated at 38, and which form linger pieces or grips for manual manipulation of the insert 30 into and out of connective position in the chamber 25.
To provide greater and more reliable tensioning of the legs 34 away from each other, a block 39 of compressible rubber is positioned between and secured in suitable manner to the lower part of the legs 34 and the apex portion 33.
What is claimed is:
1. In a circuit breaker a pair of conductive bodies, insulating means mounting said bodies in endwise relation with ends thereof facing in `spaced relation, said facing ends being inclined at opposite angles with respect to the longitudinal axes of said bodies, and an insert comprising a V-shaped bar of conductive spring material having divergent arms normally tensioned away from each other at a distance greater than the distance between the facing ends of said conductive bodies, said V-shaped bar being removably inserted in the space between said facing ends with its arms in compressed condition and electrically engaging the facing ends of and electrically connecting said conductive bodies.
2. In a device of'the character described, a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped conductive spring bar having an apex and armsdiverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward` each other and engaging the inner ends of the conductive bodies.
3. In a device of the character described, a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped conductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends: of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engagedl withA the tube side wall'at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, one of said conductive bodies having a battery post clamp thereon and the other conductive body a post arranged to be embraced by a battery cable clamp.
4. In a device of the character described, a non-conductive tubehaving a side wall, conductive bodies'secured` in opposite ends of said tube, said bodies having'inner ends in spaced relation to each other, aV-shaped conductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between theeinner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, each of said arms and the related inner ends of the conductive bodies having interengaged rib and groove means.
5. -In a device of the character described, a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped con ductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, each of said arms and the related inner ends of the conductive bodies having interengaged rib and groove means, comprising ribs on the arms and grooves in the inner ends of the conductive bodies.
6. In a device of the character described, a non-conductive tube having a side wall, conductive bodies secured in opposite ends of said tube, said bodies having inner ends in spaced relation to each other, a V-shaped conductive spring bar having an apex and arms diverging from each other in a direction away from said apex, said tube side wall having an opening between the inner ends of the conductive bodies, said conductive spring bar being engaged through said opening with said apex engaged with the tube side wall at a point opposite said opening and with the diverging arms compressed toward each other and engaging the inner ends of the conductive bodies, and a block of'resilient compressible material positioned between and secured to the arms of said V-shaped conductive bar;
ReferencesvCited in the file of this patent UNI-TED STATES PATENTS 332,336 l Fee e Dec. 15, 1885 1,277,071 1 Hastings Aug. 27, 1918 1,615,106/ e Bethea Ian. 18, 1927 1,663,013v Logan Mar. 20, 1928 1,935,509 Leeah Nov. 14, 1933 2,416,494 Peterson Feb. 25, 1947 2,729,802' Jordan Ian. 3, 1956 f FOREIGN PATENTS 521,615 Great Britain May 27, 1940
US498635A 1955-04-01 1955-04-01 Circuit breaker Expired - Lifetime US2801399A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US498635A US2801399A (en) 1955-04-01 1955-04-01 Circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US498635A US2801399A (en) 1955-04-01 1955-04-01 Circuit breaker

Publications (1)

Publication Number Publication Date
US2801399A true US2801399A (en) 1957-07-30

Family

ID=23981886

Family Applications (1)

Application Number Title Priority Date Filing Date
US498635A Expired - Lifetime US2801399A (en) 1955-04-01 1955-04-01 Circuit breaker

Country Status (1)

Country Link
US (1) US2801399A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091747A (en) * 1959-04-23 1963-05-28 Philips Corp Disconnect plug for electric device
US3287532A (en) * 1965-05-10 1966-11-22 Boseley Joseph James Battery switch
US3361950A (en) * 1966-01-03 1968-01-02 Bell Telephone Labor Inc Diode protector for alternator charged storage batteries
US3954317A (en) * 1974-02-27 1976-05-04 Amp Incorporated Elastomeric connector and its method of manufacture
US4640570A (en) * 1985-10-09 1987-02-03 The United States Of America As Represented By The Secretary Of The Air Force Electrical cone connector
US4704505A (en) * 1986-08-06 1987-11-03 Illinois Tool Works Inc. Electrical apparatus configured for predetermined encoding

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332336A (en) * 1885-12-15 Signaling device
US1277071A (en) * 1915-07-30 1918-08-27 Crouse Hinds Co Electric plug.
US1615106A (en) * 1925-08-03 1927-01-18 Peter H Bethea Battery switch
US1663013A (en) * 1924-05-19 1928-03-20 Tom P Logan Battery terminal
US1935509A (en) * 1932-10-18 1933-11-14 William M Gould Electrical switch
GB521615A (en) * 1938-11-23 1940-05-27 Henry James Osborn Improvements in and relating to electrical switches and contacts
US2416494A (en) * 1944-02-09 1947-02-25 Harold A Peterson Fuse plug
US2729802A (en) * 1954-05-21 1956-01-03 John C Jordan Battery connector

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US332336A (en) * 1885-12-15 Signaling device
US1277071A (en) * 1915-07-30 1918-08-27 Crouse Hinds Co Electric plug.
US1663013A (en) * 1924-05-19 1928-03-20 Tom P Logan Battery terminal
US1615106A (en) * 1925-08-03 1927-01-18 Peter H Bethea Battery switch
US1935509A (en) * 1932-10-18 1933-11-14 William M Gould Electrical switch
GB521615A (en) * 1938-11-23 1940-05-27 Henry James Osborn Improvements in and relating to electrical switches and contacts
US2416494A (en) * 1944-02-09 1947-02-25 Harold A Peterson Fuse plug
US2729802A (en) * 1954-05-21 1956-01-03 John C Jordan Battery connector

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3091747A (en) * 1959-04-23 1963-05-28 Philips Corp Disconnect plug for electric device
US3287532A (en) * 1965-05-10 1966-11-22 Boseley Joseph James Battery switch
US3361950A (en) * 1966-01-03 1968-01-02 Bell Telephone Labor Inc Diode protector for alternator charged storage batteries
US3954317A (en) * 1974-02-27 1976-05-04 Amp Incorporated Elastomeric connector and its method of manufacture
US4640570A (en) * 1985-10-09 1987-02-03 The United States Of America As Represented By The Secretary Of The Air Force Electrical cone connector
US4704505A (en) * 1986-08-06 1987-11-03 Illinois Tool Works Inc. Electrical apparatus configured for predetermined encoding

Similar Documents

Publication Publication Date Title
US2713668A (en) Quick detachable electrical connector
US2642474A (en) Electrical connector
US3432793A (en) Grounding connection for electrical unit
US2801399A (en) Circuit breaker
US3194926A (en) Fuse assembly having pivotally and slidably mounted insulating member in one of its fuse clips
US3157732A (en) Multi-part electrical junction box and plug-in accessory
US4218109A (en) Electrical connector assembly
US2709793A (en) Electric connector having jaws to receive a contact blade
US2777119A (en) Terminal and terminal wire connector
US2831944A (en) Electric switch
US4181395A (en) Connector for electrical components to be installed in flush receptacle boxes
US2950457A (en) Electrical outlet device
US3036285A (en) Wiring device
US2371494A (en) Electric cord terminal
US2458511A (en) Combined switch stud and fuse clip
US1173099A (en) Test-connector.
US2496413A (en) Polarized fuse pin plug
US3187296A (en) Plug-in terminal and terminal block for meter socket
US3529280A (en) Battery grounding device
US1992806A (en) Attachment plug cap
USRE22266E (en) Circuit interrupting and protecting
US3251961A (en) Reed switch assembly with prongs
US2477013A (en) Electric plug
US3200221A (en) Fuse device for cover plates of plug-in electrical receptacles
US3219966A (en) Structure for securing conductor element to electric connector device