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. 17, 2003
Filed:
Jan. 07, 2002
Dean C. Chang, Anaheim Hills, CA (US);
Evermed, Anaheim, CA (US);
Abstract
The present invention implements a releasable wheel mounting mechanism and a dual braking system to provide a wheelchair that transforms from a conventional wheelchair to a companion wheelchair. A set of small rear wheels traditionally found on a companion wheelchair is mounted on the rear of the chair, along with a means for removably mounting a set of large wheels. When the large wheels are removed, the chair reverts to a companion chair having handles on the rear of the chair for steering by a second person. With the large wheels mounted on the chair, the chair serves as a conventional wheelchair capable of being steered and propelled by the chair's occupant. To enable the dual nature of the chair, the present invention employs a braking system that allows the chair to be stopped by the occupant in either mode. A mechanical lever system applies a braking force to the large wheels when the chair is in the conventional mode, and a cable connection allows the same lever to actuate a similar braking operation on the small wheels in the companion mode.