Telephone set with a mechanism for preventing unwanted displacem

Details Telephone set with a mechanism for preventing unwanted displacem Telephone set with a mechanism for preventing unwanted displacem

1988-05-04

1990-03-06

Ng, Jin F.

Telephonic communications

Transmission line conditioning

Interference suppression

379422, 379425, 379426, 379427, 379437, 379445, 379448, 379451, H04M 106, H04M 102, H04M 104

Patent

active

049072650

ABSTRACT:
An improved telephone set of the type including a telephone body and a handset adapted to be placed on the former wherein the telephone set includes features which prevents displacement of the handset from the telephone body. The telephone body has a pair of engagement blocks incorporated therein of which part is projected outwardly of the telephone body and they are fitted into engagement recesses on the handset whereby the latter is firmly placed on the telephone body. At least the one engagement block has an engagement face which is adapted to come in contact with the engagement portion in the corresponding engagement recess, wherein each engagement block includes a pawl portion. Displacement of the handset occurs by displacing one of the pawl portions out of its respective engagement recess followed by displacement of the handset in a second direction which is different from the first direction which causes the displacement of the other pawl portion out of its respective engagement recess. Thus, the handset is reliably held on the telephone body.

REFERENCES:
patent: 4476354 (1984-10-01), Uchino et al.
patent: 4609790 (1986-09-01), Kaiwa et al.
patent: 4700383 (1987-10-01), Takagi et al.
patent: 4723281 (1988-02-01), Pei Ker et al.

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