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:
Feb. 11, 1997
Filed:
Sep. 11, 1995
Applicant:
Inventors:
Michael E Rembert, Cypress, TX (US);
Robert W Milner, Katy, TX (US);
Assignee:
Bettis Corporation, Waller, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F01B / ; F01B / ;
U.S. Cl.
CPC ...
137316 ; 92128 ; 9213 / ; 251 58 ; 251229 ; 251285 ; 251288 ;
Abstract
A device used in an actuator for locking in place a spring module while under load, the device including a spring return cylinder carrying a spring under compression when under load, a spring guide, a pull rod linked to a piston in a power cylinder, and a connection linking the pull rod and the spring guide, the connection being disengageable when said spring is not under compression, but not so when under compression.