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:
Mar. 05, 1991
Filed:
Apr. 24, 1989
Applicant:
Inventors:
Wallace A Hanson, Riverdale, GA (US);
Jeff Newman, Riverdale, GA (US);
Assignee:
United Elevator Corporation, Riverdale, GA (US);
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
91392 ; 9141 / ;
Abstract
An actuating assembly having a cylinder which receives a plunger defining a fluid restricting means along its lower end. A feed conduit delivers pressurized fluid through a fluid inlet and into the cylinder, which displaces the plunger out of the cylinder. As the plunger is displaced, the fluid restricting means progressively covers the fluid inlet, progressively restricting the rate of fluid flow into the cylinder, and slowing the plunger's displacement.