Jack with urethane brake
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United States of America Patent
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Mar 4, 2003
Grant Date -
N/A
app pub date -
Nov 24, 1998
filing date -
Nov 24, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A scissor jack assembly with double-lead Acme threaded screw. Through use of urethane or similar material as a braking means, the jack assembly is operable with a self locking action over a wider range of loads and especially at lower loads where an Acme loading phenomenon that results in said self locking action has previously been unattainable. Faster and smoother jack operation is made possible by employing a thrust bearing, including a plurality of roller or ball bearings, with the jack assembly.
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