Screw designs for a scissors jack
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United States of America Patent
Stats
-
Nov 15, 1994
Issued Date -
N/A
app pub date -
May 26, 1993
filing date -
Mar 17, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved scissors jack which has a lead screw that does not extend beyond the confines of the jack when the jack is in the partially raised position so as to reduce the space required for storing the jack. A hollow member is formed with a slot in which the extension of the threaded screw is received so that the end of the screw can slide in the slot when the jack is in the unloaded position to allow the jack to be raised to a mid height condition for storage. Under use, the extending portion of the screw moves to the end of the slot in the hollow member so as to apply tension to the lead screw to thus raise and lower the jack as the lead screw is rotated. A modified form of the invention utilizes an extended hollow trunion which prevents the end of the lead screw from extending beyond the confines of the trunion and a further modification provides for pivotally connecting two portions of the lead screw so that the jack can be moved to a stored condition.
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Cited Art Landscape
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