Detent mechanism for a fluid control valve

Details Detent mechanism for a fluid control valve Detent mechanism for a fluid control valve

1991-12-09

1993-04-27

Cohan, Alan

Valves and valve actuation

With friction detent

74527, 74531, F16K 3100

Patent

active

052055388

ABSTRACT:
Detent mechanisms are useful for retaining a stem of a control valve at predetermined operating positions. The ball type detents commonly used in control valves tend to slide thereby causing the operator to extend additional energy to overcome the sliding friction. The subject detent mechanism includes a roller rotatably disposed on a pin carried by a roller carrier. The roller has an annular arcuate surface in rolling contact with the peripheral surface of the stem. The arcuate surface increases the contact surface between the roller and the stem to thereby insure that the roller rolls on the stem and minimizes the lever effort necessary to move the stem.

REFERENCES:
patent: 2870553 (1959-01-01), Temple
patent: 3040772 (1962-06-01), Todd
patent: 3165120 (1965-01-01), Horowitz
patent: 3640146 (1972-02-01), Barnes
patent: 3774470 (1973-11-01), Cottin
patent: 4339987 (1982-07-01), Stephenson et al.

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