Telephone line switch apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4790008
SERIAL NO

06853576

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A telephone stand has a housing with a cradle in its top for a handset adapted when placed in the cradle to depress a pair of laterally spaced plungers passing through holes in the housing down into its interior. A line switch is disposed in the housing below and laterally between the plungers. The plungers are coupled to the switch by a Y-shaped piston comprising a crosshead spanning the lateral spacing between the plungers, a pair of tines projecting upwards from laterally opposite ends of the crosshead and having vertical bores therein in which lower portions of the plungers are received, and a laterally central stem extending down from the crosshead and having camming surfaces thereon adapted upon downward displacement of the piston (by downward driving of either of both of the plungers) to wedgingly displace resilient blades in the switch to change switch conditions thereof. A spring passes up through a hollow in the stem to urge the piston upwards and impart to it a floating support which is stabilized by the plunger portions in the tine bores. The tines have upwardly and outwardly facing 'L' shaped notches formed in their upper ends to prevent jamming of the downward displacement of the piston when only one of the plungers is driven down.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
AT&T INFORMATION SYSTEMS INC A CORP OF DE100 SOUTHGATE PARKWAY MORRISTOWN NJ 07960

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bohannon, Harold L Shreveport, LA 3 19

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