US3717738A - Electric switch contacts - Google Patents

Electric switch contacts Download PDF

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Publication number
US3717738A
US3717738A US00230565A US3717738DA US3717738A US 3717738 A US3717738 A US 3717738A US 00230565 A US00230565 A US 00230565A US 3717738D A US3717738D A US 3717738DA US 3717738 A US3717738 A US 3717738A
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US
United States
Prior art keywords
stem
face
head
axis
contacts
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
US00230565A
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English (en)
Inventor
K Lewis
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3717738A publication Critical patent/US3717738A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved

Definitions

  • An electrical switch contact comprises having con- 52 US. Cl ..200/166 B11 was including a generally cylindrical Stem and an 51 1111; C1. ..H0lh 1/06 tegral head which takes the form of a right triangular [58] Field Of Search....200/166 BH, 166 c, 67 G, 68, Prism with an edge thereof Perpendicular to the Stem 200/153 K axis.
  • a movable contact arm supported by a pair of said contacts for pivotal movement relative thereto on the edges thereof.
  • an electric switch contact adapted to be engaged, in use, by a relatively movable further contact, comprises a stem and an integral head on said stem, said head having a first face whose plane is substantially parallel to the axis of said stem and a second face which intersects said first face at an acute angle so as to define an edge which is substantially perpendicular to said stem axis.
  • the invention further resides in an electric switch which includes contacts as above defined.
  • FIG. 1 is a side view of a contact according to the present invention
  • FIG. 2 is a view on arrow 2 in FIG. 1, and
  • FIG. 3 shows a part section through a switch which includes contacts as shown in FIGS. 1 and 2.
  • the contact shown in FIGS. 1 and 2 has a stem and .an integral head 1 l in the form of a right triangular prism.
  • the head 11 includes a face 12 normal to the axis of the stem 10, a face 13 normal to the face 12 i.e., parallel to the axis of the stem 10, and a face 14 which intersects face 13 at an acute angle so as to define an edge 15 which is perpendicular to the axis of the stem 10.
  • a plurality of the above contacts are supported within an electric switch, as shown in FIG. 3, on a base 16 and are associated with a contact arm which is movable by a switch mechanism 17.
  • Edges 15 of contacts 18, 19 provide pivots about which arm 20 can be moved by mechanism 17.
  • Face 14 of contacts 21, 22 are engageable by respective ends 23, 24 of the arm 20.
  • An electrical switch contact adapted to be engaged, in use, by a relatively movable further contact, comprising a stem and an integral head on said stem,
  • said head having a first face whose plane is substantially parallel to the axis of said stem, and a second face which intersects said first face at an acute angle so as to define an edge which is substantially perpendicular to said stem axis.
  • An electrical switch including a plurality of contacts each comprising a stem and an integral head on said stem, said head having a first face whose plane is substantially parallel to the axis of said stem, and a second face which intersects said first face at an acute angle so as to define an edge which is substantially perpendicular to said stem axis.
  • each contact head has a further face whose plane is disposed normally with respect to the axis of the stem, said further face forming with the first and second faces a right triangle whereby each head takes the form of a rigglt trian ular prism,
  • An electrical switch as claimed in claim 4 including a base and wherein two of the contacts are mounted on the base with their first faces in spaced, facing relationship, a contact arm is pivotally supported on the said two edges of the contacts, and a pair of further contacts on the arm are engageable with a further two of said contacts on the base by pivotable movements of the contact arm on the said edges.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Mechanisms For Operating Contacts (AREA)
US00230565A 1971-03-05 1972-03-01 Electric switch contacts Expired - Lifetime US3717738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB621171A GB1365071A (en) 1971-03-05 1971-03-05 Electric switches

Publications (1)

Publication Number Publication Date
US3717738A true US3717738A (en) 1973-02-20

Family

ID=9810449

Family Applications (1)

Application Number Title Priority Date Filing Date
US00230565A Expired - Lifetime US3717738A (en) 1971-03-05 1972-03-01 Electric switch contacts

Country Status (6)

Country Link
US (1) US3717738A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU466986B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2210498A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2128616B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1365071A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT952087B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2148867C1 (ru) * 1998-11-10 2000-05-10 Закрытое акционерное общество "ЗЭТА" Контактная система
RU210286U1 (ru) * 2021-12-27 2022-04-06 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет" (ФГБОУ ВО "СибГИУ") Контактная система

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225156A (en) * 1964-01-10 1965-12-21 Carling Electric Inc Dual button switch with automatic detent ball return action
US3294932A (en) * 1965-05-17 1966-12-27 Western Electric Co Wiping contact switch
US3297851A (en) * 1964-06-25 1967-01-10 Oris Watch Co S A Commutators for measuring apparatus having a linearly moving needle
US3316370A (en) * 1964-12-03 1967-04-25 Peter F Ardizzi Minimum contact bounce electrical switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3225156A (en) * 1964-01-10 1965-12-21 Carling Electric Inc Dual button switch with automatic detent ball return action
US3297851A (en) * 1964-06-25 1967-01-10 Oris Watch Co S A Commutators for measuring apparatus having a linearly moving needle
US3316370A (en) * 1964-12-03 1967-04-25 Peter F Ardizzi Minimum contact bounce electrical switch
US3294932A (en) * 1965-05-17 1966-12-27 Western Electric Co Wiping contact switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2148867C1 (ru) * 1998-11-10 2000-05-10 Закрытое акционерное общество "ЗЭТА" Контактная система
RU210286U1 (ru) * 2021-12-27 2022-04-06 Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный индустриальный университет" (ФГБОУ ВО "СибГИУ") Контактная система

Also Published As

Publication number Publication date
FR2128616A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-10-20
FR2128616B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-10-24
AU3955072A (en) 1973-09-06
GB1365071A (en) 1974-08-29
AU466986B2 (en) 1973-09-06
IT952087B (it) 1973-07-20
DE2210498A1 (de) 1972-09-21

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