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:
Jul. 05, 2016
Filed:
Mar. 05, 2012
Applicants:
Andreas Csaba Szentistvany, Andover Hampshire, GB;
Martin Snook, Colchester, GB;
Inventors:
Andreas Csaba Szentistvany, Andover Hampshire, GB;
Martin Snook, Colchester, GB;
Assignee:
Stannah Stairlifts Limited, Hampshire, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B66B 9/08 (2006.01);
U.S. Cl.
CPC ...
B66B 9/08 (2013.01); B66B 9/0838 (2013.01); Y10T 29/49826 (2015.01);
Abstract
The invention provides a levelling system for the chair of a stairlift, a characteristic feature of the system being the provision of a safety back-up or locking mechanism that will lock the position of the chair in the event of failure within the levelling drive. This locking mechanism preferably includes a locking wheel that is in partial mesh with a geared wheel forming part of the levelling drive. In the event of failure within the drive the locking wheel meshes to lock the position of the chair.