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. 15, 2021
Filed:
Aug. 16, 2017
Gearwheel Ab, Västerås, SE;
GEARWHEEL AB, Västerås, SE;
Abstract
A wheel assembly comprising a wheelchair wheel () and a backstop arrangement () configured to selectively engage and disengage a backstop function and comprising a backstop selector () and a backstop member (), wherein the wheel () comprises an internal-gear wheel hub () comprising a number of internal gears () and having an inner rotatable circumferential surface (), and wherein the backstop member is configured to allow the inner circumferential surface to rotate in one direction and to prevent rotation in the opposite direction. The wheel assembly comprises further a gear-shift arrangement comprising a shift member (), which is axially moveable within the internal-gear hub () to engage a specific gear of said number of internal gears (), and wherein the shift member () via a connector member () is operatively connected to the backstop selector.