US3773997A - Key assembly diaphragm switch actuator with overtravel and feel mechanisms - Google Patents

Key assembly diaphragm switch actuator with overtravel and feel mechanisms Download PDF

Info

Publication number
US3773997A
US3773997A US00207142A US3773997DA US3773997A US 3773997 A US3773997 A US 3773997A US 00207142 A US00207142 A US 00207142A US 3773997D A US3773997D A US 3773997DA US 3773997 A US3773997 A US 3773997A
Authority
US
United States
Prior art keywords
keystem
actuator
housing
switch
spring
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
US00207142A
Other languages
English (en)
Inventor
P Evans
M Miller
M Muller
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.)
Datanetics Corp
ITT Inc
Original Assignee
Datanetics 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 Datanetics Corp filed Critical Datanetics Corp
Application granted granted Critical
Publication of US3773997A publication Critical patent/US3773997A/en
Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/12—Construction of key buttons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/16—Mounting or connecting key buttons on or to key levers
    • 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
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • H01H1/20—Bridging contacts
    • H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H2003/028—Rotating knob or lever or tumbler that can be turned or pushed by hand in only one direction, e.g. by making inaccessible one side of a tumbler
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/028—Tactile feedback alterable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2215/00—Tactile feedback
    • H01H2215/034—Separate snap action
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/024—Transmission element
    • H01H2221/026—Guiding or lubricating nylon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/036—Return force
    • H01H2221/044—Elastic part on actuator or casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/028—Key stroke
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2227/00—Dimensions; Characteristics
    • H01H2227/032—Operating force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/018—Testing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/044—Injection moulding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/01—Key modules mounted on laykey
    • H01H2233/02—Key modules mounted on laykey captured between assembled parts of support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/05—Actuator part on body
    • H01H2233/058—One degree of freedom
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/07—Cap or button on actuator part
    • H01H2233/086—Inserting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/09—Actuating striker on actuator part
    • H01H2233/094—Snap coupling
    • H01H2233/096—Snap coupling with limited freedom
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2235/00—Springs
    • H01H2235/018—Spring seat

Definitions

  • the keystem includes a means cooperating with the housing for providing a discontinuity in a force-versus-displacement characteristic of the key assembly during the actuation stroke.
  • the second resilient means is selected to match the characteristics of the device being actuated such that device actuation is effected at a stroke position where the discontinuity occurs.
  • a cap is fitted on the keystem, and is made of a soft material which forms detent sockets receiving projections on the keystem.
  • the plastic material forming the cap is relatively soft compared to the keystem material, and the cap material will cold flow in a relatively short time to form permanent sockets which receive projections 58 on the keystem post.
  • the sockets or depressions remain even if the cap is temporarily removed from the keystem, and they form with the post projections a series of detents which retain the cap on the keystem.
  • the cap detent sockets are thus formed automatically during assembly of the components by virtue of the selection of a relatively softer material for the cap, and a significant tooling complication of molding the sockets during cap fabrication is thus eliminated.

Landscapes

  • Push-Button Switches (AREA)
US00207142A 1971-12-13 1971-12-13 Key assembly diaphragm switch actuator with overtravel and feel mechanisms Expired - Lifetime US3773997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20714271A 1971-12-13 1971-12-13

Publications (1)

Publication Number Publication Date
US3773997A true US3773997A (en) 1973-11-20

Family

ID=22769369

Family Applications (1)

Application Number Title Priority Date Filing Date
US00207142A Expired - Lifetime US3773997A (en) 1971-12-13 1971-12-13 Key assembly diaphragm switch actuator with overtravel and feel mechanisms

Country Status (4)

Country Link
US (1) US3773997A (cg-RX-API-DMAC7.html)
JP (1) JPS4876073A (cg-RX-API-DMAC7.html)
DE (1) DE2260346A1 (cg-RX-API-DMAC7.html)
FR (1) FR2169812A1 (cg-RX-API-DMAC7.html)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961146A (en) * 1974-10-09 1976-06-01 Cutler-Hammer, Inc. Pretravel switch for portable tools
US3993884A (en) * 1972-09-15 1976-11-23 Victor Comptometer Corporation Detachably mounted keyboard pushbutton actuators and housing assembly
US4117292A (en) * 1977-06-10 1978-09-26 Telaris Telecommunications, Inc. Dual spring actuator for keyboard switch assembly
US4154997A (en) * 1976-06-25 1979-05-15 Cutler-Hammer, Inc. Miniature multi-contact pushbutton switch
US4156802A (en) * 1977-06-10 1979-05-29 Telaris Telecommunications, Inc. Electrical switch assembly
US4350857A (en) * 1980-10-03 1982-09-21 Allen-Bradley Company Illuminated industrial membrane switch
US4361743A (en) * 1981-03-06 1982-11-30 Stackpole Components Company Lost motion keyswitch
US4376239A (en) * 1980-10-03 1983-03-08 Allen-Bradley Company Industrial membrane switch
US4417115A (en) * 1982-03-03 1983-11-22 Amp Incorporated Switch actuating assembly having improved cams and plural modes
US4434323A (en) 1981-06-29 1984-02-28 Motorola, Inc. Scrambler key code synchronizer
US4440992A (en) * 1982-03-03 1984-04-03 Amp Incorporated Low profile keyboard switch actuating assembly
US4453198A (en) * 1982-09-15 1984-06-05 General Instrument Corporation Linear feel keyswitch with hysteresis
US4454562A (en) * 1982-09-15 1984-06-12 General Instrument Corporation Keyswitch with telescoping plunger
US4467160A (en) * 1982-08-06 1984-08-21 Cherry Electrical Products Corporation Low profile switch
EP0119695A1 (en) * 1983-02-22 1984-09-26 AMP INCORPORATED (a New Jersey corporation) Switch key assembly having improved switch actuation
US4475020A (en) * 1981-06-08 1984-10-02 Clarion Co., Ltd. Slide switch operating device
US4479111A (en) * 1982-02-09 1984-10-23 Burroughs Corporation Photo-optical switch apparatus
US4489227A (en) * 1984-01-11 1984-12-18 Sheldahl, Inc. Back lighted, full travel push button membrane keyboard
US4492838A (en) * 1983-02-24 1985-01-08 Amp Incorporated Key switch having an actuator integral with the return spring
US4525613A (en) * 1984-01-20 1985-06-25 Apple Computer, Inc. Spiral spring keyboard switch with hairpin spring tactile feedback
US4686339A (en) * 1986-02-24 1987-08-11 Carlingswitch, Inc. Snap-on actuator for toggle switch
US4697052A (en) * 1984-12-28 1987-09-29 La Telemecanique Electrique Emergency switching apparatus
US5201824A (en) * 1989-10-06 1993-04-13 Alps Electric Co., Ltd. Push button switch
US20090143110A1 (en) * 1996-07-05 2009-06-04 Anascape, Ltd. Image Controller
USD645028S1 (en) 2010-04-01 2011-09-13 3M Innovative Properties Company Push to talk control box
US8404990B2 (en) 2010-06-30 2013-03-26 3M Innovative Properties Company Switch system having a button travel limit feature
US8674932B2 (en) 1996-07-05 2014-03-18 Anascape, Ltd. Image controller
CN104241000A (zh) * 2013-06-07 2014-12-24 Zf腓德烈斯哈芬股份公司 键盘按键的按键模块的按键挺杆,按键模块和其制造方法
US20150170854A1 (en) * 2013-12-13 2015-06-18 Fujitsu Component Limited Key switch device and keyboard
US9081426B2 (en) 1992-03-05 2015-07-14 Anascape, Ltd. Image controller
US20160071664A1 (en) * 2014-09-05 2016-03-10 Apple Inc. Button features of an electronic device
US11004627B2 (en) 2017-03-30 2021-05-11 Fujitsu Component Limited Reaction force generating member and key switch device
US11862415B2 (en) 2013-05-14 2024-01-02 Fujitsu Component Limited Keyswitch device and keyboard

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50142172U (cg-RX-API-DMAC7.html) * 1974-05-13 1975-11-22
JPS5821461Y2 (ja) * 1978-10-05 1983-05-07 アルプス電気株式会社 プツシユスイツチ
JPS59181527U (ja) * 1983-05-21 1984-12-04 アルプス電気株式会社 押釦スイツチ
FR2584231A1 (fr) * 1985-06-28 1987-01-02 Dav Ind Commutateur electrique a bouton poussoir notamment pour equipement electrique de vehicule automobile
FR2620563B1 (fr) * 1987-09-14 1992-07-10 Alphameric Sa Nouveau type de contacteur pour clavier a faible pas du type alpha-numerique
DK0810619T3 (da) * 1996-05-28 2000-11-13 Haschkamp Wolfgang Tryktastafbryderpakke til husholdningsapparater

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684411A (en) * 1951-04-13 1954-07-20 Edwards Company Inc Push-button switch construction
US2787691A (en) * 1955-12-02 1957-04-02 Pass & Seymour Inc Turn knob switch with removable luminous boot
US3165611A (en) * 1961-07-18 1965-01-12 Carling Electric Inc Spring biased-spring actuated momentary switch
DE1222139B (de) * 1964-06-12 1966-08-04 Heinrich Kissling Wischervorsatz fuer Druckknopfschalter
US3309487A (en) * 1966-01-13 1967-03-14 Ark Les Switch Corp Push button actuator
US3662138A (en) * 1970-03-31 1972-05-09 Ibm Actuator for momentary closure of an elastic diaphragm switch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684411A (en) * 1951-04-13 1954-07-20 Edwards Company Inc Push-button switch construction
US2787691A (en) * 1955-12-02 1957-04-02 Pass & Seymour Inc Turn knob switch with removable luminous boot
US3165611A (en) * 1961-07-18 1965-01-12 Carling Electric Inc Spring biased-spring actuated momentary switch
DE1222139B (de) * 1964-06-12 1966-08-04 Heinrich Kissling Wischervorsatz fuer Druckknopfschalter
US3309487A (en) * 1966-01-13 1967-03-14 Ark Les Switch Corp Push button actuator
US3662138A (en) * 1970-03-31 1972-05-09 Ibm Actuator for momentary closure of an elastic diaphragm switch

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM Technical Disclosure, Vol. 13, No. 11, April 1971, Key For Elastic Diaphragm Switch Keyboards, Fazzio et al. *
IBM Technical Disclosure, Vol. 14, No. 6, Nov. 1971, Snap Action Elastic Diaphragm Switch Mechanism, Harris. *

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993884A (en) * 1972-09-15 1976-11-23 Victor Comptometer Corporation Detachably mounted keyboard pushbutton actuators and housing assembly
US3961146A (en) * 1974-10-09 1976-06-01 Cutler-Hammer, Inc. Pretravel switch for portable tools
US4154997A (en) * 1976-06-25 1979-05-15 Cutler-Hammer, Inc. Miniature multi-contact pushbutton switch
US4117292A (en) * 1977-06-10 1978-09-26 Telaris Telecommunications, Inc. Dual spring actuator for keyboard switch assembly
US4156802A (en) * 1977-06-10 1979-05-29 Telaris Telecommunications, Inc. Electrical switch assembly
US4350857A (en) * 1980-10-03 1982-09-21 Allen-Bradley Company Illuminated industrial membrane switch
US4376239A (en) * 1980-10-03 1983-03-08 Allen-Bradley Company Industrial membrane switch
US4361743A (en) * 1981-03-06 1982-11-30 Stackpole Components Company Lost motion keyswitch
US4475020A (en) * 1981-06-08 1984-10-02 Clarion Co., Ltd. Slide switch operating device
US4434323A (en) 1981-06-29 1984-02-28 Motorola, Inc. Scrambler key code synchronizer
US4479111A (en) * 1982-02-09 1984-10-23 Burroughs Corporation Photo-optical switch apparatus
US4440992A (en) * 1982-03-03 1984-04-03 Amp Incorporated Low profile keyboard switch actuating assembly
US4417115A (en) * 1982-03-03 1983-11-22 Amp Incorporated Switch actuating assembly having improved cams and plural modes
US4467160A (en) * 1982-08-06 1984-08-21 Cherry Electrical Products Corporation Low profile switch
US4453198A (en) * 1982-09-15 1984-06-05 General Instrument Corporation Linear feel keyswitch with hysteresis
US4454562A (en) * 1982-09-15 1984-06-12 General Instrument Corporation Keyswitch with telescoping plunger
EP0119695A1 (en) * 1983-02-22 1984-09-26 AMP INCORPORATED (a New Jersey corporation) Switch key assembly having improved switch actuation
US4492838A (en) * 1983-02-24 1985-01-08 Amp Incorporated Key switch having an actuator integral with the return spring
US4489227A (en) * 1984-01-11 1984-12-18 Sheldahl, Inc. Back lighted, full travel push button membrane keyboard
US4525613A (en) * 1984-01-20 1985-06-25 Apple Computer, Inc. Spiral spring keyboard switch with hairpin spring tactile feedback
US4697052A (en) * 1984-12-28 1987-09-29 La Telemecanique Electrique Emergency switching apparatus
US4686339A (en) * 1986-02-24 1987-08-11 Carlingswitch, Inc. Snap-on actuator for toggle switch
US5201824A (en) * 1989-10-06 1993-04-13 Alps Electric Co., Ltd. Push button switch
US9081426B2 (en) 1992-03-05 2015-07-14 Anascape, Ltd. Image controller
US20090143110A1 (en) * 1996-07-05 2009-06-04 Anascape, Ltd. Image Controller
US8674932B2 (en) 1996-07-05 2014-03-18 Anascape, Ltd. Image controller
USD645028S1 (en) 2010-04-01 2011-09-13 3M Innovative Properties Company Push to talk control box
US8404990B2 (en) 2010-06-30 2013-03-26 3M Innovative Properties Company Switch system having a button travel limit feature
US11862415B2 (en) 2013-05-14 2024-01-02 Fujitsu Component Limited Keyswitch device and keyboard
CN104241000A (zh) * 2013-06-07 2014-12-24 Zf腓德烈斯哈芬股份公司 键盘按键的按键模块的按键挺杆,按键模块和其制造方法
US10468210B2 (en) * 2013-06-07 2019-11-05 Cherry Gmbh Key tappet for a key module of a key for a keyboard, key module of a key for a keyboard and method for producing it
US20160133403A1 (en) * 2013-06-07 2016-05-12 Zf Friedrichshafen Ag Key Tappet For A Key Module Of A Key For A Keyboard, Key Module Of A Key For A Keyboard And Method For Producing It
US10410806B2 (en) 2013-12-13 2019-09-10 Fujitsu Component Limited Reaction force generating member for a key switch device
US9741507B2 (en) * 2013-12-13 2017-08-22 Fujitsu Component Limited Key switch device and keyboard
US11011329B2 (en) 2013-12-13 2021-05-18 Fujitsu Component Limited Reaction force generating member for a key switch device
US20150170854A1 (en) * 2013-12-13 2015-06-18 Fujitsu Component Limited Key switch device and keyboard
US9779894B2 (en) * 2014-09-05 2017-10-03 Apple Inc. Button features of an electronic device
US20160071664A1 (en) * 2014-09-05 2016-03-10 Apple Inc. Button features of an electronic device
US11004627B2 (en) 2017-03-30 2021-05-11 Fujitsu Component Limited Reaction force generating member and key switch device
US11355293B2 (en) 2017-03-30 2022-06-07 Fujitsu Component Limited Reaction force generating member and key switch device

Also Published As

Publication number Publication date
JPS4876073A (cg-RX-API-DMAC7.html) 1973-10-13
DE2260346A1 (de) 1973-06-20
FR2169812A1 (cg-RX-API-DMAC7.html) 1973-09-14

Similar Documents

Publication Publication Date Title
US3773997A (en) Key assembly diaphragm switch actuator with overtravel and feel mechanisms
US4467160A (en) Low profile switch
US3898421A (en) Push button switch with elastic conductive sheet
US4529848A (en) Switch with conical spring actuator
US3749872A (en) Switch mounted on printed circuit board
US6271487B1 (en) Normally open extended travel dual tact switch assembly with sequential actuation of individual switches
US5442152A (en) Computer key switch
US5626223A (en) Cam-assisted switch
CA1242507A (en) Keyboard assembly
EP0142593B1 (en) Keyboard switch with pivotal actuator lever
US3767022A (en) Return spring key stem boot
US3999025A (en) Low profile tactile feedback keyboard switch assembly
US3603756A (en) Snap action switch
US4417115A (en) Switch actuating assembly having improved cams and plural modes
US9972462B1 (en) Mechanical switch structure
US3697706A (en) Push type electric switch with contact post, movable coil spring contact and interposed non conductive plunger
JPS6334180Y2 (cg-RX-API-DMAC7.html)
US3964593A (en) Keyboards
JPH11224559A (ja) 押ボタンスイッチ
US6483050B1 (en) Key switch with easily attachable key top
US4117292A (en) Dual spring actuator for keyboard switch assembly
US4316066A (en) Key switch with snap-action contact and resilient actuator
GB1369897A (en) Push-button switch
US4613737A (en) Low profile pushbutton switch with tactile feedback
US3707610A (en) Alternate action mechanism for pushbutton switch with flat-headed latching pin

Legal Events

Date Code Title Description
AS Assignment

Owner name: ITT CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION;REEL/FRAME:004389/0606

Effective date: 19831122