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. 26, 1993
Filed:
Apr. 30, 1992
Applicant:
Inventor:
Martin P McCormick, Forest Lake, IL (US);
Assignee:
Graco Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251321 ; 222571 ;
Abstract
A hardened needle and seat are provided in a dispense valve wherein the seat is spring loaded such that when the needle is pulled back against the seat, the seat moves away from the dispense opening causing a 'snuff back' effect. Hardened seats and needles are utilized to provide long life and one or more components may be run using the same general valve mechanism at predetermined ratios.