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:
Mar. 01, 2022
Filed:
Jul. 30, 2018
Applicant:
Stannah Stairlifts Limited, Hampshire, GB;
Inventor:
Max Daniel Woodhams, Hampshire, GB;
Assignee:
Stannah Stairlifts Limited, Hampshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66B 9/08 (2006.01);
U.S. Cl.
CPC ...
B66B 9/0815 (2013.01); B66B 9/0838 (2013.01); B66B 9/0846 (2013.01);
Abstract
A mechanically-based arrangement for locking a stairlift chair relative to a stairlift carriage in the event of a failure within the drive that is provided to maintain the chair level as the stairlift is in operation. The arrangement uses inter-engaging components that are engaged and dis-engaged in timed relationship to rotation of the levelling motor. At all times at least one set of inter-engaging components are engaged.