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:
Sep. 09, 2025
Filed:
Nov. 01, 2023
Liberty Lift Solutions, Llc, Houston, TX (US);
Michael S. Juenke, Spring, TX (US);
Libert Lift Solutions, LLC, Houston, TX (US);
Abstract
A gas control valve has a bellows, a sealed upper chamber, a lower chamber open to ambient pressure, and upper and lower seals. The valve is placed in its open and closed states as the bellows expands and collapses in response to the difference in effective fluid pressure in the sealed and open chambers. The sealed chamber is filled with liquid and compressed gas. The liquid fills a lower portion of the sealed chamber that extends either around the exterior of the bellows or into the interior of the bellows. Gas fills an upper portion of the sealed chamber. The upper seal provides a seal to isolate liquid in the lower portion of the sealed chamber from fluid pressure in the upper portion of the sealed chamber. The lower seal isolates the bellows from ambient fluid pressure.