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. 15, 1997
Filed:
May. 15, 1995
Applicant:
Inventor:
Sung-Dai Moon, Kyeongsangbuk-do, KR;
Assignee:
Daewoo Electronics Co., Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
137509 ; 13750513 ; 13761421 ;
Abstract
An exhaust control valve for an electromagnetic pump is disclosed. By the exhaust control valve, pressure and quantity of exhausted oil is maintained constant, noise is reduced, an incomplete combustion of oil is prevented and energy efficiency is improved. The exhaust control valve has a tapered cylindrical valve body, a frustoconical head formed at one end of the body, a nipple integrally formed with the frustoconical head and a spring for applying forward biasing force to the body. The exhaust control valve moves forwards and backwards according to the variation of pressure applied thereof so that oil having constant pressure is exhausted to a burner.