Telephone lock

Details Telephone lock Telephone lock

1985-12-02

1988-02-16

Ng, Jin F.

Telephonic communications

Terminal accessory or auxiliary equipment

Locking device

200 4318, 379425, 379428, H04M 106, H01H 928

Patent

active

047260637

ABSTRACT:
The present invention provides an automatic lock for use on a telephone, and comprising a main body for securing to the phone, a slide member slideably mounted in the main body and a spring pressuring the slide member to automatically slide to a locking position over the post of the phone when depressed by the telephone handle to the down position. The slide member is manually slideable against the pressure of the spring away from the locking position to allow upward popping of the post with the slide member being reset to return to the locking position with further depressing of the post.

REFERENCES:
patent: 2518554 (1950-08-01), Kirby et al.
patent: 2659780 (1973-11-01), Berger
patent: 2873333 (1959-02-01), Jacaman
patent: 3069513 (1962-12-01), Nimer
patent: 3124664 (1964-03-01), Beatty
patent: 3823277 (1974-07-01), Rudolph
patent: 3929035 (1975-12-01), Cohn
patent: 4006334 (1977-02-01), Robotham et al.
patent: 4147903 (1979-04-01), Shpall
patent: 4379953 (1983-04-01), Huff
patent: 4435623 (1984-03-01), Valentine
patent: 4504707 (1985-03-01), Ochiai
patent: 4536622 (1985-08-01), Rieman
"Kiddy-Proof Phone Guard" Ad, Better Homes and Gardens, Nov. 1950, p. 303.

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