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:
Aug. 22, 1978
Filed:
Feb. 16, 1977
Sydney W Frey, Jr, Brookfield, WI (US);
Allen-Bradley Company, Milwaukee, WI (US);
Abstract
A compact electrical control, such as a potentiometer, a rheostat, or a switch includes a housing and a shaft rotatably mounted within the housing. The housing has a cavity for receiving a resilient annular seal surrounding the shaft, and the shaft is provided with a radial pressure plate that bears against the seal. A rotary assembly composed of resistance or switch elements is mounted on the shaft between the pressure plate and a journaled end of the shaft, and the resistance or switch elements are contacted by stationary contacts held in the housing. The seal is axially compressed between the pressure plate on the shaft and a cavity end wall, and is radially compressed between a circumferential side wall and the shaft, so that the seal both prevents liquid from entering the housing along the shaft and controls axial end play of the shaft.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile