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:
Jan. 24, 2012
Filed:
Oct. 08, 2004
Walter Dennis Robertson, Iii, Harleysville, PA (US);
Thomas John Mcnichols, Telford, PA (US);
Stephen R. Kramer, Perkiomenville, PA (US);
Walter Dennis Robertson, III, Harleysville, PA (US);
Thomas John McNichols, Telford, PA (US);
Stephen R. Kramer, Perkiomenville, PA (US);
Brooks Instrument, LLP, Hatfield, PA (US);
Abstract
A flow control valve includes an inlet and an outlet through which fluid enters and exits the valve. A valve plunger has a guide spring attached thereto, such that the guide spring is situated between the plunger and a valve orifice. The plunger, and thus the guide spring, is movable relative to the orifice to control fluid flow through the valve. The guide spring and the orifice surface adjacent the guide spring define coplanar surfaces that seal against each other when the valve is closed.