Extendable telephone

Details Extendable telephone Extendable telephone

1992-02-28

1994-08-02

Dwyer, James L.

Telephonic communications

Terminal

Housing or housing component

379428, H04M 100

Patent

active

053352742

ABSTRACT:
An improved extendible telephone having a main casing incorporating a receiver and an auxiliary casing incorporating a transmitter and dial keys and slidably mounted on the main casing. Guide grooves are formed in each of the slide surface of the main casing and a back plate which is fastened to the auxiliary casing. Rail members are fitted in the slide surface of the main casing. The auxiliary casing is slidable along the rail members toward and away from an extended position while being guided by the guide grooves. The rail members each has an angled lug while the back plate is formed with two spaced pairs of angled recesses. When the auxiliary casing is slid to the extended position or a contracted position, the angled lugs selectively mate with either of the two pairs of angled recesses to lock the auxiliary casing in position.

REFERENCES:
patent: 4272655 (1981-06-01), Mackenzie et al.
patent: 4821318 (1989-04-01), Wu
patent: 4907266 (1990-03-01), Chen
patent: 5003589 (1991-03-01), Chen
patent: 5054051 (1991-10-01), Hoff

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