Liquid-sealed type of a governor for telephone dial

Details Liquid-sealed type of a governor for telephone dial Liquid-sealed type of a governor for telephone dial

1979-06-22

1982-03-30

Brigance, Gerald L.

H04M 1315

Patent

active

043225829

ABSTRACT:
An improved governor device for a telephone dial which includes a rectangular hexahedral chamber provided with a rack engaged with a pinion and a cylindrical chamber provided with a piston secured to said rack at one end and having a valve system. The two chambers are filled up with a certain liquid such as silicone oil in order to afford a resistance to the piston. The piston can move either way upon dialing and at this time due to the resistance from the liquid the piston can reciprocate without any noise within a certain interval.

REFERENCES:
patent: 2767251 (1956-10-01), Alexandersson
patent: 2810789 (1957-10-01), Huffman

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