GB1194832A - Improvements in or relating to Push-Button Mechanisms - Google Patents

Improvements in or relating to Push-Button Mechanisms

Info

Publication number
GB1194832A
GB1194832A GB1305466A GB1305466A GB1194832A GB 1194832 A GB1194832 A GB 1194832A GB 1305466 A GB1305466 A GB 1305466A GB 1305466 A GB1305466 A GB 1305466A GB 1194832 A GB1194832 A GB 1194832A
Authority
GB
United Kingdom
Prior art keywords
button
carriage
buttons
depressed
stems
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
GB1305466A
Inventor
Peter Alan Fawlk
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB1305466A priority Critical patent/GB1194832A/en
Publication of GB1194832A publication Critical patent/GB1194832A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof

Abstract

1,194,832. Keysenders. GENERAL ELECTRIC & ENGLISH ELECTRIC CO'S. Ltd. 8 June, 1967 [24 March, 1966], No. 13054/66. Heading H4K. [Also in Division H1] In an electric push-button mechanism a carriage 20 is mounted on parallel motion links 22 and comprises parallel rods 21 each positioned below the stems of the buttons of one row, and each stem has an inclined surface which, as the button is initially depressed, engages the corresponding rod and displaces the carriage to a position in which the button can be further depressed without further displacement of the carriage giving the buttons a snap action. In the subscriber's telephone set shown, in the displaced position of the carriage the rods 21 are positioned to block depression of all buttons adjacent to the depressed button. The inclined surfaces are bevelled ends of the button stems, adjacent stems being bevelled in opposite directions. The middle rod 21 carries a sector-shaped cam which passes through a slot in one contact of a spring contact set 25 and engages another contact of this set. When the carriage is displaced the cam rotates operating the contacts. The contacts exert a centering force on the carriage and cause its return when the button is released. When a button is depressed a flattened side portion of the stem engages the rods 21 after the carriage has been initially displaced providing the snap action. The moulded plastics base 10 carries a printed circuit board attached at 16 and the push-buttons are arranged to operate contact-making members disposed between the base member 10 and the printed circuit board. The spring contact set may be replaced by a microswitch.
GB1305466A 1966-03-24 1966-03-24 Improvements in or relating to Push-Button Mechanisms Expired GB1194832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1305466A GB1194832A (en) 1966-03-24 1966-03-24 Improvements in or relating to Push-Button Mechanisms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1305466A GB1194832A (en) 1966-03-24 1966-03-24 Improvements in or relating to Push-Button Mechanisms

Publications (1)

Publication Number Publication Date
GB1194832A true GB1194832A (en) 1970-06-10

Family

ID=10015956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1305466A Expired GB1194832A (en) 1966-03-24 1966-03-24 Improvements in or relating to Push-Button Mechanisms

Country Status (1)

Country Link
GB (1) GB1194832A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees