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:
Jun. 01, 1999
Filed:
Jun. 29, 1998
Applicant:
Inventors:
Paul E Hanser, Tipton, IA (US);
Stacy M Hanser, Davenport, IA (US);
Jeffrey W Hogue, East Moline, IL (US);
Assignee:
HWH Corporation, Moscow, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60P / ;
U.S. Cl.
CPC ...
296 2615 ; 296175 ; 296176 ; 296 2612 ; 52 69 ;
Abstract
An apparatus for extending and retracting one structure with respect to another which utilizes a pivoting mechanism rather than the standard linear mechanisms known in the art. The mechanism further utilizes a torsion bar connected between the distal ends of the actuator for synchronizing the movement of the actuators to prevent binding and twisting. A first embodiment utilizes a flat chain and a pair of circular guides to maintain the torsion bar in a horizontal plane, while a second embodiment of the invention utilizes a four-bar linkage system.