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:
Sep. 27, 1977
Filed:
May. 15, 1975
Applicant:
Inventor:
Nakwon Cho, Knoxville, TN (US);
Assignee:
Electro-Nucleonics, Inc., Fairfield, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137244 ; 251333 ;
Abstract
A valve seat cleaning device utilizing a valve head of resilient material in the shape of a frustum of a cone. A flexible circular disk is positioned against that end of the valve head of lesser diameter. The circular disk is of somewhat greater diameter than that end of the valve head so that it may perform a wiping action to wipe away dirt particles from the valve seat.