The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 1976
Filed:
Aug. 11, 1975
Bernard R Weber, Elm Grove, WI (US);
David W Wendt, Monona, WI (US);
Wesbar Corporation, West Bend, WI (US);
Abstract
A jack for supporting and adjusting the elevation of a trailer tongue comprises a ground support post, having either a caster wheel or foot plate at its lower end, extending downwardly through a jack mechanism housing which is bolted to the trailer tongue. The post can be raised or lowered either by means of a rotatable crank extending from the housing or, alternately, after manual release of latching means in the housing and tilting of the crank, by manually sliding the post. The post has a toothed rack affixed along one side thereof. The mechanism in the housing comprises a pivotally movable support member on which a crank-driven worm and an intermeshing worm gear are rotatably mounted. The support member is spring biased and releasably latched into an upward position wherein the worm gear engages the rack (and functions as a pinion gear) and manual rotation of the crank is necessary to move the post up or down. Upon manual release of the latch, tilting of the crank moves the support member to a downward position wherein the worm gear is disengaged from the rack, whereupon the post is free to be slid manually to a desired position.