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1. (WO2017031587) COMPACT PORTABLE LIFT ASSEMBLY

Pub. No.:    WO/2017/031587    International Application No.:    PCT/CA2016/050998
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Thu Aug 25 01:59:59 CEST 2016
IPC: B66B 9/16
B66B 11/04
B66B 9/08
B66B 9/193
Applicants: ADAPTIVE CONCEPTS LTD.
Inventors: SMITH, David W.
Title: COMPACT PORTABLE LIFT ASSEMBLY
Abstract:
A knockdown, portable lift is relatively compact and lightweight for transport and use where there is no existing means for lifting a load between a lower surface and an upper surface or where the existing means cannot be used. Components of the lift are stored in a base portion of the lift and are assembled on site for forming a lift frame extending between the upper and lower surfaces. A platform and drive assembly are supported on the lift frame and are driven together up and down tracks on each side of the lift frame using a rotary drive, such as a hand crank or electric motor, to power the drive assembly. The drive assembly is operable by a person on or off the platform from either the upper or lower surface or traversing stairs over which the platform is moving. The drive assembly incorporates a unique overspeed braking system and a unique clutch arrangement.