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:
Jun. 30, 2020
Filed:
Aug. 04, 2014
Daniel Measurement and Control, Inc., Houston, TX (US);
Thomas Henry Loga, Sugar Land, TX (US);
David J. Seiler, Spring, TX (US);
Justin Blake Crouch, Cypress, TX (US);
Michael Richard Adib Zahr, College Station, TX (US);
Raul H. Almazan, The Woodlands, TX (US);
Daniel Measurement and Control, Inc., Houston, TX (US);
Abstract
A control valve includes a piston-housing having a hollow portion. The hollow portion has a first end, an open end, first and second internal chambers, and a fluid port configured to allow fluid to exit the second chamber. The first chamber is nearer the first end, and the second chamber is nearer the open end. A piston is located within the housing and is adapted for reciprocal motion. The piston includes a first and second seal-engaging portions. The first seal-engaging portion has a diameter that is less than the diameter of the second seal-engaging portion.