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:
Dec. 11, 2001
Filed:
Feb. 02, 2000
Applicant:
Inventor:
Philip von Schroeter, Haresfield, GB;
Assignee:
Arjo Limited, Gloucestershire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01G 1/952 ; G01G 1/914 ; B66C 1/40 ; A61G 7/10 ;
U.S. Cl.
CPC ...
G01G 1/952 ; G01G 1/914 ; B66C 1/40 ; A61G 7/10 ;
Abstract
An invalid hoist comprises a mast, a lifting arm which can be raised and lowered by telescopically extending and retracting the mast and/or by raising and lowering a carriage, which may support the lifting arm, relative to the mast, and a load cell on the lifting arm for providing a signal representative of the weight of a person being lifted. The lifting arm is connected to the mast or the carriage by an arrangement which allows the lifting arm to be displaced angularly in a vertical plane against a spring force in order to maintain the load cell in a constant orientation as a vertical load is applied to the lifting arm.