Limit stop

Details Limit stop Limit stop

1975-02-24

1977-12-27

Scott, Samuel

192 clutches and power-stop control

Stop mechanism

Limit stop

744248R, 74 8915, F16D 7100

Patent

active

040649814

ABSTRACT:
Limit stop apparatus wherein a driven shaft rotates a predetermined number of revolutions in either direction whereupon a travelling nut assembly contacts a shock absorbing stop to terminate shaft rotation by frictionally jamming screw threads between the nut assembly and the driven shaft. Outer and inner portions of the nut assembly are connected for limited relative rotational motion on non-jamming auxiliary threads, thus permitting the driven shaft to be backed off to release the nut assembly from the shock absorbing stop and thereby release the jammed threads with a minimum of available torque. By this structure, locking of the limit stop at either end is prevented.

REFERENCES:
patent: 459769 (1891-09-01), Russell
patent: 2092563 (1937-09-01), Tucker
patent: 2959064 (1960-11-01), Geyer et al.
patent: 3151842 (1964-10-01), Ishai et al.
patent: 3402613 (1968-09-01), Neusel et al.
patent: 3543598 (1970-12-01), Lanzenberger
patent: 3623574 (1971-11-01), Gardner
patent: 3668940 (1972-06-01), Avena et al.

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