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:
Feb. 12, 2013
Filed:
Aug. 31, 2010
Gary A. Treadwell, Dover, NH (US);
Dale D. Ames, Exeter, NH (US);
Margaret E. Tomaswick, Portsmouth, NH (US);
Siang Kiang Chan Beswick, Newington, NH (US);
Paul R. Beswick, Newington, NH (US);
Gary A. Treadwell, Dover, NH (US);
Dale D. Ames, Exeter, NH (US);
Margaret E. Tomaswick, Portsmouth, NH (US);
Beswick Engineering, Inc., Greenland, NH (US);
Abstract
Stem-actuated two-way valve for precise, intermittent and repeatable delivery of fluid and/or gaseous substances from high pressure sources. A dual purpose o-ring functions as a valve seat and separates high pressure segments from low pressure segments. The novel valve stem system allows precise delivery of desired liquids and/or gases regardless of valve stem travel within a defined travel length.