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. 20, 1976
Filed:
Sep. 20, 1974
Kenneth F Knudsen, St. Clair Shores, MI (US);
George O Nienhold, Kentwood, MI (US);
American Chain & Cable Company, Inc., Bridgeport, CT (US);
Abstract
A trolley comprising a trolley body, a shaft fixed on the trolley body and having ends projecting outwardly along the sides of the trolley body and a wheel on each end of the shaft. Each wheel comprises an inner race, an outer race and rollers between the inner and outer races. The inner race having an opening through which the end of the shaft extends. The inner race also has a frusto conical surface adjacent the end of the opening. A conical washer having its outer surface complementary to the frusto conical surface of the inner race is placed adjacent thereto and interengaging means are provided between the washer and the shaft end to prevent rotation therebetween. Each end of the shaft having a threaded opening extending axially therein and a cap screw is threaded into the opening and engages the conical washer to hold the washer against the inner race and relative to the end of the shaft.