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. 24, 1991
Filed:
Apr. 25, 1989
Robert J Heideman, Westland, MI (US);
Enertrols, Inc., Westland, MI (US);
Abstract
A shock-absorbing device (10) includes an inner cylinder (22) surournded by an outer tube (12) whose ends are enclosed by end caps (14, 128). A piston (42) within the cylinder (22) forces hydraulic fluid through holes (106-116). A metering sleeve (130) slidable over the cylinder (22) includes cross-cut openings (132-142) therein defining rectangularly-shaped metering orifices which selectively close off the openings (106-116) in the cylinder (22) to adjust the flow of hydraulic fluid, and thereby alter the shock-absorbing characteristics of the device. The cross-cut openings (132-142) may be formed by passing a cutting element along a straight stroke through a side of the metering sleeve (130) at a depth sufficient to create an orifice in the inner wall of the sleeve (130).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile