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. 25, 1995
Filed:
Aug. 09, 1993
Applicant:
Inventor:
Jerry B Tomlin, Sugar Land, TX (US);
Assignee:
Koomey Companies International, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
13762566 ; 137906 ;
Abstract
A two-position, three-way pilot valve having a hollow spool valve element connected to a valve stem having first and second ends of equal diameter for pressure balancing the valve. A biasing piston engages one end of the valve stem and a pilot piston engages the other end of the valve stem. The pistons may include two piston rings of different diameter for holding the pistons in alignment. The ends of the spool valve element are structurally designed to maximize valve seating without overstressing.
Tomlin, Jerry. (1995). Springless pilot operated sequence valve (U.S. Patent No. 5409040). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5409040
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile