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:
Aug. 12, 2014
Filed:
Apr. 15, 2011
Douglas D. Colby, Clarkston, MI (US);
Louie Xu Liu, Troy, MI (US);
Douglas D. Colby, Clarkston, MI (US);
Louie Xu Liu, Troy, MI (US);
Graco Minnesota Inc., Minneapolis, MN (US);
Abstract
A fine control gas valve includes a tee having opposed first and second tee runs co-axially aligned on a longitudinal axis, and a tee branch. A valve assembly is partially received in and connected to the first tee run having a valve disc connected to a drive screw longitudinally moved by drive screw axial rotation. The valve disc includes a first slot on the valve disc having a first end and a wider second end, and a second disc slot as a mirror image of the first disc slot oppositely positioned about the valve disc. A pipe in the second tee run has a first portion of a pipe end face/seat surface in direct contact with a second tee run shoulder. The valve disc when contacting a second portion of the pipe end face/seat surface defines a valve closed condition. The first and second portions are co-planar to each other.