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:
Oct. 20, 1987
Filed:
Sep. 08, 1986
Applicant:
Inventor:
Edward P Murphy, Coon Rapids, MN (US);
Assignee:
Graco Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
13754319 ; 137539 ; 251337 ;
Abstract
A ball check valve is provided having a ball retainer which is particularly inexpensive to manufacture and yet which is capable of allowing high amounts of flow without clogging or plugging. The retainer member is formed with three stamped pieces of sheet material which are generally u-shaped and have included an angle such that the sum of the angles is 360.degree.. In the preferred embodiment three such retainer components are used and the retaining member is held in place between two housing members which are threadably attached to one another. The ball and spring are held in place by the retainer member.