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:
Jul. 13, 1993
Filed:
Aug. 02, 1991
Applicant:
Inventor:
Peter L Frank, Hamel, MN (US);
Assignee:
Wagner Spray Tech Corporation, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B / ;
U.S. Cl.
CPC ...
239337 ; 239346 ; 239367 ; 239372 ; 137854 ; 251143 ; 285239 ; 222464 ;
Abstract
An improved check valve for portable paint cup spray guns having a radially extending concave diaphragm surrounding a syphon tube and forming a seal with an interior surface of a lid of the paint cup.