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. 15, 1980
Filed:
Jun. 16, 1977
Applicant:
Inventor:
William R Weber, Seattle, WA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ; F15B / ;
U.S. Cl.
CPC ...
91468 ; 91443 ; 91446 ; 1375962 ;
Abstract
A device for cushioning hydraulic actuators at the end of travel including a unique valve responsive to hydraulic pressure which, one when under system return pressure ports fluid to a chamber of less volume than the actuator cylinder and then through a line restriction for reduced fluid flow and the consequential slowing of the actuator and two when system pressure is off, drains the chamber for use during the next cycle.