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. 17, 1998
Filed:
Nov. 06, 1996
Applicant:
Inventor:
Paul C Sheldon, Mequon, WI (US);
Assignee:
Sheldon/Van Someren, Inc., Wauwatosa, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ;
U.S. Cl.
CPC ...
92-2 ; 92 31 ; 92168 ;
Abstract
A linear actuator cylinder reduces the stiction otherwise present during initiation of rod extension or retraction. The actuator cylinder includes a cylinder assembly having a piston that slides longitudinally through a cylinder barrel. A rod is connected to the piston and extends from the cylinder barrel. A rotator mechanism is connected to the rod to rotate the piston and rod with respect to the cylinder barrel. The rotator mechanism typically includes a hydraulic or electric motor connected to the rod by, for example, a chain engaged with a pair of sprockets.