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:
Feb. 28, 1978
Filed:
Oct. 29, 1976
Albert A Raimondi, Monroeville, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
A system preventing high pressure fluid leakage from a liquid natural gas compressor casing or hydrogen cooled generator casing to the atmosphere. Sealing the clearance between a non-rotating shaft and the casing through which it extends is provided by a multi-faced piston which can be axially displaced to contact a sleeve or shoulder which is attached to and surrounds a given length of the shaft. The multi-faced piston is slidably actuated to the open, unsealed position during shaft rotation and to the closed, sealed position during non-rotation of the shaft. This is accomplished by a series of conduits and valves which direct high pressure and low pressure gas against the appropriate faces of the multi-faced piston.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile