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:
May. 04, 2004
Filed:
Oct. 25, 2002
Vincent Buls, Wilton, IA (US);
Paul Edmund Hanser, Tipton, IA (US);
HWH Corporation, Moscow, IA (US);
Abstract
A linkage assembly for expandable rooms for recreational vehicles to affect the coordinated movement of parallelogram linkage members through the actuation of a glide arm that will extend or retract the expandable room. The glide arm is powered by a hydraulic cylinder and moves generally vertically along a vehicle frame member as the hydraulic cylinder rod extends or retracts to move the expandable room relative to the vehicle frame. The glide arm is pivotally connected to one link in each of two pairs of parallelogram linkage members, the linkage members extending between points of pivotal attachment with a second structural member, such as an expandable room member, and the vehicle frame member.