Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1997-05-02
1998-07-14
Marmor, Charles A.
Machine element or mechanism
Control lever and linkage systems
Elements
74 8915, 29736214, B60N 208, F16H 2920
Patent
active
057787336
ABSTRACT:
A mechanical lock of the type having a lock housing, a rotatable nut axially captive in the housing, a threaded rod axially displaceable through the housing in threading engagement with the nut, and a detent normally locking the nut against rotation in the housing to prevent axial translation of the rod through the housing. Camming surfaces on the nut urge the detent out of locking engagment with the nut when the nut is torqued by axial force on the threaded rod. A detent control element normally keeps the detent in locking engagement with the nut until the detent control element is displaced by an actuator to an unlocked position. The detent control element has a camming surface which urges the detent into locking engagement with the nut when the detent control element is returned to a locking position. The preferred detent is a ball bearing and two variants of the mechanism are disclosed, one having a linearly reciprocating shuttle as the control element, the other using a rotating shaft for this purpose.
REFERENCES:
patent: 4630866 (1986-12-01), McFarlane
patent: 4881775 (1989-11-01), Rees
patent: 5280999 (1994-01-01), Jones et al.
patent: 5299853 (1994-04-01), Griswold et al.
patent: 5320413 (1994-06-01), Griswold et al.
Battista Mary Ann
Marmor Charles A.
P. L. Porter Co.
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