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:
Jul. 17, 1984
Filed:
Feb. 08, 1982
Donald L Hildebrand, Union, IL (US);
Mario J Martinez, Elgin, IL (US);
Elgin Sweeper Company, Elgin, IL (US);
Abstract
A sweeper, which has a pair of front wheels which are mounted on a frame on opposite sides of a dirt hopper, a steerable guide wheel unit mounted on the frame in a tricycle arrangement with respect to the front wheels characterized by the guide wheel unit having a suspension having first and second members arranged with one member being telescopically received and the other member with an arrangement for transmitting torque between the members and the unit has an arrangement positioned between the two members for resiliently suspending the two members. The arrangement for resiliently suspending can comprise a single coiled spring telescopically receiving an outside member or a plurality of spring units that are provided either by themselves or with shock absorber units. The arrangement for transmitting torque can include a splined shaft and an internally splined bore or a plurality of torque transmitting lever arms.