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. 09, 2004
Filed:
Dec. 28, 2001
Larry M. Cheng, Taichung, TW;
Merits Health Products, Ltd., Taichung, TW;
Abstract
The electrical wheelchair with spliced front wheel drive and rear wheel drive of the invention comprises a wheel frame and a chair. The wheel frame has a hollow column with a locating ring on its top and a plurality of locating chute on the ring rim. A semi-circular protrusion is placed on the surface of the locating ring. The wheel frame provides a power rod for controlling the moving direction of the wheelchair. There are two foldable footplates erected, one in the front side and the rear side and the footplate is folded when not in use. Beneath the chair, there is rotary shaft inserted in the hollow column. Along the side of the rotary shaft, there install two locating seats, a control stick passing through the holes of the locating seats. The control stick is operated to engage or disengage the locating ping from the locating chute. On the correspondent opposite position of the locating ring, there installs a micro switch. Releasing the control stick allows changing the direction of the chair along with the footplate. The semi-circular hump will activate the micro switch to change the moving direction of the power rod.