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. 27, 1993
Filed:
Nov. 13, 1991
Applicant:
Inventor:
Robert D Bartelt, Merton, WI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ; B66B / ;
U.S. Cl.
CPC ...
187 12 ; 187 19 ;
Abstract
A stairway chairlift device has a rail incorporating a gear rack, a carriage unit having a motor and gear box which operatively engage the gear rack to provide motion of the chairlift, and a collapsible seat assembly mounted to the carriage unit. The carriage unit also incorporates a battery unit and control circuitry to control operation of the chairlift. The electrical system also incorporates an automatic recharging circuit any time the chairlift is at the bottom or top of the rail. The seat assembly is easily pivoted on a swivel mechanism which permits the seat assembly to be locked in one of three positions--right 90.degree., front or left 90.degree..