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. 23, 2015
Filed:
Feb. 03, 2011
Christian Malm, Jönköping, SE;
Stefan Ericsson, Mullsjö, SE;
Christian Malm, Jönköping, SE;
Stefan Ericsson, Mullsjö, SE;
GearWheel AB, Jönköping, SE;
Abstract
The present invention relates to a wheelchair wheel attachment and gear change adaptor unit for a geared wheelchair wheel having a hub which comprises an attachment shaft protruding to one side thereof, and where gear change is actuated by axial manipulation of a rod running within the shaft in a cylindrical bore which is concentric with the shaft. An adaptor housing () is designed to receive and support the shaft in an opening (). Locking means are provided for releasably locking the shaft to the adaptor housing () such that the shaft cannot move out from the adaptor housing () until the locking means are released. A gear shift plunger () is arranged for hydraulic activation within the adaptor housing () such as to, upon activation when the wheelchair wheel is attached to the adaptor unit, push the rod outwards of the adaptor housing () towards the hub for effecting gear change in the hub.