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:
Aug. 08, 1989
Filed:
Feb. 03, 1989
Applicant:
Inventors:
William H Elder, Mandeville, LA (US);
Ries B Hansen, New Orleans, LA (US);
Andre W Olivier, New Orleans, LA (US);
Assignee:
Mechanical Backrest, Inc., Mandeville, LA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A47C / ; A61G / ;
U.S. Cl.
CPC ...
5 71 ; 5433 ; 5 74 / ;
Abstract
A person-raising device, designed for lifting a person in bed, rests atop a bed and is activated by a linear actuator comprising a dual-threaded lead screw and a small electric motor and gear reduction unit. The small electric motor and gear reduction unit drives the dual-threaded lead screw to raise a pair of support arms, which raises a person resting on the device. The lead screw is enclosed in a slotted tube; this decreases the chance of the lead screw coming into contact with a person using the device.