MOTORIZED SLED FOR STAIR CHAIRS

Title:

MOTORIZED SLED FOR STAIR CHAIRS

Document Type and Number:

WIPO Patent Application WO/2010/025387

Kind Code:

A3

Abstract:

A lightweight motorized and tracked sled for attachment to a variety of stair chairs is described. A power supply or power source provides power to a motor driving a track configured to engage a set of stairs. The motor and track can lift and support the stair chair and a patient thereon up or down one or more flights of stairs. The track driven by the motor has a length sufficient to simultaneously engage the lips or edges of a pair of sequential steps, but may be otherwise limited in length to reduce the weight of the track. To ensure that the sled and attached stair chair are stably supported while ascending or descending stairs, the sled may have rails, skis, or passive tracks having a length sufficient to ensure that the rails, skis, or passive tracks are always over the edge or lip of no fewer than two steps.

Inventors:

WALKINGSHAW NATHAN R (US)
WENZEL MARK (US)

Application Number:

PCT/US2009/055398

Publication Date:

June 17, 2010

Filing Date:

August 28, 2009

Export Citation:

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Assignee:

PARAMED CORP (US)
WALKINGSHAW NATHAN R (US)
WENZEL MARK (US)

International Classes:

A61G5/06; B62B5/02; B62B9/04

Foreign References:

JP2002178930A	2002-06-26
US20080067762A1	2008-03-20
US5158309A	1992-10-27
US20070095581A1	2007-05-03
JP2002085476A	2002-03-26

Other References: