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. 17, 1979
Filed:
Aug. 15, 1977
Alan W Wells, Edelstein, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
A rotary mechanism including a housing defining an operating chamber having a wall, a shaft journalled in the housing and having an eccentric within the chamber, a rotor within the chamber and journalled on the eccentric, and at least one seal carried by the rotor and slidably engaging the wall. A seal lubricating system is provided and includes an aperture in the wall along with a conduit for directing lubricant to the aperture. A plug partially closes the aperture and has a higher coefficient of thermal expansion than the housing, with the result that an oil-emitting gap is provided and its area changes proportional to temperature, and, thus, oil viscosity, to meter the proper amount of oil for seal lubrication irrespective of temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile