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. 20, 2004
Filed:
Jun. 11, 2001
Douglas B. Noyes, Upland, CA (US);
Leslie L. Briley, Jr., Murrieta, CA (US);
Alexander Glew, Los Altos, CA (US);
Puregress, Inc., Los Altos, CA (US);
Abstract
A compact, in-line valve assembly consists of a hollow valve body, a seat, and a first diaphragm assembly including a deflectable portion forming a first volume between the seat and the first diaphragm assembly. A second diaphragm is attached to the first diaphragm assembly such that a second volume is defined between the second diaphragm and the second opening. A third volume is formed between the first diaphragm assembly and the second diaphragm and is sealed from the first volume and the second volume. A process flows through the first diaphragm assembly between the first volume and the second volume. A low-leak rate, self-aligning head assembly including a stem and a head coupled are coupled to the first diaphragm assembly. A deflection of the deflectable portion and the second diaphragm provides movement to open and close the head from the valve seat.