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. 06, 1984
Filed:
Jul. 01, 1983
Applicant:
Inventor:
John L Kettle, Vernon, CT (US);
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65B / ;
U.S. Cl.
CPC ...
198328 ; 198778 ;
Abstract
A passenger carrying system for transporting passengers between two floors, comprising a plurality of interconnected steps which move between the floors in a closed pattern that includes sections which spiral down and up between the floors around vertical posts. In the spiral sections the steps form staircases which move along the pattern.
Kettle, John. (1984). Spiral escalator (U.S. Patent No. 4434884). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4434884
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile