Machine element or mechanism – Control lever and linkage systems – Elements
Patent
1994-07-07
1996-05-07
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Elements
74548, 74543, 74545, 811778, 811779, G05G 100
Patent
active
055135447
ABSTRACT:
A retractable, locking mechanism for use with a crank handle wherein the mechanism allows the handle to be rotated from an extended position to a retracted position is comprised of a male swivel and a female swivel, a pin for joining the male and female swivels and a spring for urging the male swivel to seat with the female swivel. The pin is fixed between flanges extending from the female swivel. The male swivel extends between the flanges and rotates about the pin which extends through a cavity defined within the male swivel. When the male swivel is in an "extended" position, the male swivel is engaged with the female swivel such that their axes are aligned and an axially extending shaft on the male swivel seats in an axially extending bore in the female swivel. The spring rides in the cavity of the male swivel and is biased against the pin such that the spring urges the shaft of the male swivel into the bore of the female swivel. When the male swivel is rotated to a "retracted" position, the spring urges the male swivel against the flanges of the female swivel such that the axis of the male swivel is perpendicular to the axis of the female swivel. When the shaft mechanism is utilized as the shaft on a crank, the crank handle can be adjusted from a position which allow use of the handle to apply a moment about the shaft to a position in which the handle is less protrusive.
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patent: 5280738 (1994-01-01), Liou
Winkler John
Winkler John M.
J. W. Winco, Inc.
Luong Vinh T.
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