Miniature rotary timer

Details Miniature rotary timer Miniature rotary timer

1987-10-09

1988-09-20

Miska, Vit W.

Horology: time measuring systems or devices

Time interval

With predetermined mechanical timing means

368139, 188296, G04F 100, F16D 5702

Patent

active

047730501

ABSTRACT:
A viscous fluid timer is constructed with a cylindrical cavity formed by a housing that supports an axially aligned rotor unit having a rotor on a shaft within a first chamber filled with a viscous fluid. The first chamber communicates with a second chamber having a shaft seal through which the rotor shaft projects, the rotor shaft having a torsional connection to a spring means for rotating the rotor unit within the chamber, the first chamber being filled with a highly viscous fluid which impedes the rotation of the rotor.

REFERENCES:
patent: 2604163 (1952-07-01), Exline
patent: 3651903 (1972-03-01), Butler et al.
patent: 3712421 (1973-01-01), Hadfield

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