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:
Nov. 01, 2005
Filed:
Jun. 13, 2003
Robert A. Hansen, North Oakdale, MN (US);
Robert A. Hansen, North Oakdale, MN (US);
Dynamic Air Inc., St. Paul, MN (US);
Abstract
An actuator having a set of slidable pistons including sliding regions with the sliding regions including at least one wear member supported by a resilient member and a second wear member laterally spaced from the first wear member with a lubrication reservoir located therebetween for maintaining the wear members in lubricated sliding engagement with the cylindrical walls of the housing to limit the need to replace or repair the actuator. In order to provide ingress and egress of fluid from the chambers within the actuator a channel passage extends along the back side of the extension of the piston to permit quick venting of fluid therefrom.