FR2416537A1 - Pushbutton keyboard for subscribers telephone set - has sliding tubes acting as guides for internal and external helical springs of buttons - Google Patents

Pushbutton keyboard for subscribers telephone set - has sliding tubes acting as guides for internal and external helical springs of buttons

Info

Publication number
FR2416537A1
FR2416537A1 FR7803004A FR7803004A FR2416537A1 FR 2416537 A1 FR2416537 A1 FR 2416537A1 FR 7803004 A FR7803004 A FR 7803004A FR 7803004 A FR7803004 A FR 7803004A FR 2416537 A1 FR2416537 A1 FR 2416537A1
Authority
FR
Grant status
Application
Patent type
Prior art keywords
spring
buttons
guides
internal
telephone set
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.)
Granted
Application number
FR7803004A
Other languages
French (fr)
Other versions
FR2416537B1 (en )
Inventor
Pierre Richard
Claude Tessier
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.)
PICART LEBAS TELEPHONES
Original Assignee
PICART LEBAS TELEPHONES
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

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/50Switches 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
    • H01H13/52Switches 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 immediately upon removal of operating force, e.g. bell-push switch

Abstract

The pushbutton keyboard has a contact ring moving when a button is pressed and contacting a printed circuit board connected to the selection signal generator. A moving guide supports the button. A first spring returns the button and guide to their rest positions. A second spring coaxial with the first pushes the contact ring against a stop on the guide when in the rest position. A single stationary tube has its inside surface guiding the first spring and its outside surface guiding the second spring. The tube is concentric with the contact ring and slides longitudinally.
FR7803004A 1978-02-03 1978-02-03 Expired FR2416537B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7803004A FR2416537B1 (en) 1978-02-03 1978-02-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7803004A FR2416537B1 (en) 1978-02-03 1978-02-03

Publications (2)

Publication Number Publication Date
FR2416537A1 true true FR2416537A1 (en) 1979-08-31
FR2416537B1 FR2416537B1 (en) 1981-05-29

Family

ID=9204174

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803004A Expired FR2416537B1 (en) 1978-02-03 1978-02-03

Country Status (1)

Country Link
FR (1) FR2416537B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306147A1 (en) * 1987-08-31 1989-03-08 SAINT SWITCH, INC. (an Illinois Corporation) Floating operating and release point switch

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE731758C (en) * 1941-06-21 1943-02-18 Stotz Kontakt Gmbh Electric push-button switch
FR1569544A (en) * 1967-08-23 1969-05-30
DE2201646A1 (en) * 1972-01-14 1973-07-19 Bbc Brown Boveri & Cie Electric push-button push-button
US3773998A (en) * 1972-10-16 1973-11-20 Chomerics Inc Pedestal and spring member for key actuator of diaphragm switch
DE2346392A1 (en) * 1972-09-15 1974-03-28 Victor Comptometer Corp Keyboard, especially for electronic computing geraete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE731758C (en) * 1941-06-21 1943-02-18 Stotz Kontakt Gmbh Electric push-button switch
FR1569544A (en) * 1967-08-23 1969-05-30
DE2201646A1 (en) * 1972-01-14 1973-07-19 Bbc Brown Boveri & Cie Electric push-button push-button
DE2346392A1 (en) * 1972-09-15 1974-03-28 Victor Comptometer Corp Keyboard, especially for electronic computing geraete
US3773998A (en) * 1972-10-16 1973-11-20 Chomerics Inc Pedestal and spring member for key actuator of diaphragm switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306147A1 (en) * 1987-08-31 1989-03-08 SAINT SWITCH, INC. (an Illinois Corporation) Floating operating and release point switch

Also Published As

Publication number Publication date Type
FR2416537B1 (en) 1981-05-29 grant

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Legal Events

Date Code Title Description
ST Notification of lapse