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:
Apr. 16, 1991
Filed:
Sep. 21, 1989
Leighton Lee, II, Guilford, CT (US);
The Lee Company, Westbrook, CT (US);
Abstract
A fluid control valve comprises a slidable, tubular poppet member that is biased toward and sealingly engages dual concentric annular valve seats, which valve seats define an annular opening through which the fluid medium flows when the valve is open. When the system pressure reaches a threshold pressure the poppet member is axially displaced from the valve seats such that an annular orifice is opened between the inside edge of the poppet and the inside valve seat and another orifice is formed between the outside edge of the poppet and the outside valve seat through which orifices the fluid medium flows into a central, axially extending relief path partially defined by the inside of the poppet. The dual orifices allow the valve to open with a stroke that is about one-half that of that required in a valve with only one orifice and similar operating range.