Screw designs for a scissors jack

Details Screw designs for a scissors jack Screw designs for a scissors jack

1993-05-26

1994-11-15

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Mechanically actuated

B66F 312

Patent

active

053640721

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.

REFERENCES:
patent: 876764 (1908-01-01), Bentley
patent: 4025054 (1977-05-01), Yamazaki
patent: 4695036 (1987-09-01), Yukimoto et al.
patent: 5064171 (1991-11-01), Engel

Affiliated with

Also associated with

Rating

Screw designs for a scissors jack does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Screw designs for a scissors jack, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw designs for a scissors jack will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1092220