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. 08, 1998
Filed:
Apr. 11, 1997
Sabatino A Bianchi, Bloomfield Hills, MI (US);
Boice F Horde, Westland, MI (US);
Bernard J Wallis, Dearborn, MI (US);
Livernois Research and Development Company, Dearborn, MI (US);
Abstract
A gas cylinder with internal time delay which is entirely self contained within the cylinder. A valve pin that controls communication between the two sides of the piston through one or more a one-way valves in the piston. As each piston is moved by a die into the cylinder body, it exposes a portion of reduced cross section on a valve pin and gas flows through a one way valve such that the effective area of the piston is reduced. When the die moves away from the workpiece, a time delay occurs and the piston is delayed until the piston moves upwardly and closes communication between the sides of the piston.