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:
Apr. 06, 1993
Filed:
Apr. 16, 1991
Ervin VanDenberg, North Canton, OH (US);
Jost International of Grand Haven Michigan, Grand Haven, MI (US);
Abstract
A landing gear for semitrailers includes a two speed double reduction gear assembly having fewer, smaller, and simpler parts, resulting in a compact double reduction gear assembly and cost efficient landing gear unit with a unique clutch-shifting mechanism to provide for shifting from one ratio to another. The double reduction gear assembly is disposed on and about in-line input and output shafts further resulting in an easy to crank and shift landing gear unit capable of achieving standard crank handle turn to vertical leg travel distance ratios. The low gear or low speed ratio of the landing gear unit can be varied within a broad range during manufacture, if desired, generally without increasing the overall size or complexity of the two speed double reduction gear assembly. The landing gear can further include a universal mounting feature and is durable and simple to use.