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:
Nov. 15, 1977
Filed:
Jul. 26, 1976
Nicholas S Kosanovich, Pittsburgh, PA (US);
Westinghouse Electric Corporation, Pittsburgh, PA (US);
Abstract
A system supplying oil to the seal plates of a generator. Seal oil is provided by a primary pump and a secondary pump which acts as a backup for the primary pump. Under normal operating conditions a portion of the seal oil supplied by either pump is diverted through a bypass line so that only a predetermined amount of oil actually flows to the seal plates. When the flow rate through the bypass line falls below a specific amount, the secondary pump is activated. If, at any time, the oil pressure supplied to the seal plates falls below a predetermined amount, then a hydraulic accumulator maintains the necessary pressure and flow rate for a relatively short period of time required to bring the backup pump to its proper pressure and flow rate.