Constant force side button engagement mechanism

Details Constant force side button engagement mechanism Constant force side button engagement mechanism

1998-02-19

1999-11-30

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Reciprocating to reciprocating

74422, 92130B, 92130C, 185 33, F16H 2144, F16H 5526, F16H 112

Patent

active

059922524

ABSTRACT:
The inventive button pushing mechanism allows pneumatic force to be translated actuate a button on a cellular telephone that is being tested by an automatic testing machine. The mechanism includes an actuating shaft that transmits pneumatic force to a spur gear which rotationally translates the force to actuate the button. The spur gear is also connected to a weighted counter balance shaft which opposes movement of the actuating shaft, such that when the pneumatic force is turned off, the counter balance shaft retracts the mechanism back to an initial state. The uses of gravity provides a constant and known force to oppose the pneumatic force.

REFERENCES:
patent: 576830 (1897-02-01), Ulli
patent: 740907 (1903-10-01), Page
patent: 958506 (1910-05-01), Hrivnak et al.
patent: 1525068 (1925-02-01), Carlstedt
patent: 3028727 (1962-04-01), Anston
patent: 4520994 (1985-06-01), Dewald

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