GB1400628A - Electrical switches - Google Patents

Electrical switches

Info

Publication number
GB1400628A
GB1400628A GB4879872A GB4879872A GB1400628A GB 1400628 A GB1400628 A GB 1400628A GB 4879872 A GB4879872 A GB 4879872A GB 4879872 A GB4879872 A GB 4879872A GB 1400628 A GB1400628 A GB 1400628A
Authority
GB
United Kingdom
Prior art keywords
button
key
contacts
disc
oct
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
Application number
GB4879872A
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.)
Addmaster Corp
Original Assignee
Addmaster Corp
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 Addmaster Corp filed Critical Addmaster Corp
Publication of GB1400628A publication Critical patent/GB1400628A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring

Landscapes

  • Push-Button Switches (AREA)
  • Contacts (AREA)

Abstract

1400628 Retractive switches ADDMASTER CORP 23 Oct 1972 [22 Oct 1971] 48798/72 Heading H1N In a push-button key switch, the moving contact comprises an expandable conducting toroidal spring 27, Fig. 1, surrounding a conical actuator portion 25 of the key 21 and resting on an insulator disc 16 whereby on depression of the key 21 the spring 27 is expanded over the edge 28 of the disc 16 to bridge two or more contacts 13, 14. In the particular embodiment the contacts 13 14, are part of a printed circuit board 12 having an enlarged aperture 15 for a hub 16 of the disc 17 which acts as a guide for a reduced end portion 19 of the key 21. The conical portion 25 may be convex (as shown) or have straight or concave sides depending upon the feel characteristics required on the button 21. Additional guide supports on the button is provided by a rectangular section hole 23 in a base member 24 co-operating with a rectangular guide portion 20 of the button. The arrangement is stated to avoid contact bounce and unnecessary wear on the contacts 13, 14, 27 which are flash coated with gold, platinum or other precious metal to a thickness of 0À00050 inches.
GB4879872A 1971-10-22 1972-10-23 Electrical switches Expired GB1400628A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19191571A 1971-10-22 1971-10-22

Publications (1)

Publication Number Publication Date
GB1400628A true GB1400628A (en) 1975-07-16

Family

ID=22707443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4879872A Expired GB1400628A (en) 1971-10-22 1972-10-23 Electrical switches

Country Status (5)

Country Link
US (1) US3732387A (en)
JP (1) JPS5411564Y2 (en)
FR (1) FR2156515B1 (en)
GB (1) GB1400628A (en)
IT (1) IT949087B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK137586B (en) * 1976-06-30 1978-03-28 Gnt Automatic As Pushbutton mechanism.
US4034177A (en) * 1976-11-19 1977-07-05 Burroughs Corporation Plunger-actuated, lost motion switch with tactile feedback
US4088855A (en) * 1977-02-28 1978-05-09 Korry Manufacturing Co. Keyboard electro-mechanical switch with coil spring contact
US4127752A (en) * 1977-10-13 1978-11-28 Sheldahl, Inc. Tactile touch switch panel
US4418252A (en) * 1982-04-05 1983-11-29 Daigle Phillip R Key switch assembly
IT1190234B (en) * 1986-03-10 1988-02-16 Sirio Panel S N C Di Forzieri BUTTON DEVICE FOR ELECTRIC OR SIMILAR CONTACTS, IN PARTICULAR FOR INSTRUMENTATION PANELS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US959435A (en) * 1909-03-06 1910-05-24 Electric Goods Mfg Company Circuit-closer.
DE231050C (en) * 1909-03-06
US3206561A (en) * 1961-11-02 1965-09-14 Magnavox Co Expansible multiple contact switch

Also Published As

Publication number Publication date
US3732387A (en) 1973-05-08
FR2156515B1 (en) 1974-05-10
JPS4858468U (en) 1973-07-25
IT949087B (en) 1973-06-11
JPS5411564Y2 (en) 1979-05-24
FR2156515A1 (en) 1973-06-01

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee