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:
Feb. 27, 2007
Filed:
Jun. 21, 2004
Thomas A. Panzarella, Harleysville, PA (US);
James B. Eldon, Iii, Barto, PA (US);
David D. Mcclanahan, Harleysville, PA (US);
Thomas A. Panzarella, Harleysville, PA (US);
James B. Eldon, III, Barto, PA (US);
David D. McClanahan, Harleysville, PA (US);
Abstract
A preferred embodiment of a roller assembly for a lifting device for a personal-transportation vehicle includes a shaft member for mounting on a lifting arm assembly of the lifting device and having an outer surface, and a roller member for supporting a lifting strap of the lifting device. The roller member has an inner surface defining a central passage for receiving the shaft and contacting the outer surface. The inner and outer surfaces have complementary profiles that permit a relative orientation of the roller member and the shaft member to change so that a weight vector acting through the lifting strap can remain substantially perpendicular to an axial centerline of the roller member.