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. 05, 1996
Filed:
Mar. 31, 1995
Sung-Dai Moon, Kyeongsangbuk-do, KR;
Daewoo Electronics Co., Ltd., Seoul, KR;
Abstract
Disclosed is an electromagnetic pump, in which oil is exhausted not intermittently but constantly with small pressure fluctuations, with reduced operational noise, with reduced fire-extinction delay, and improved energy efficiency. The electromagnetic pump has an automatic exhaust-control valve having a conical head, and a cylindrical body having a tapered shape whose diameter decreases rearward from the conical head. According to change of a sectional area of an oil path defined between the exhaust-control valve and an exhaust chamber, the exhaust-control valve transmits an elevated pressure of pressurized oil to a development section to thereby automatically control its pressure elevating capability.