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:
Oct. 13, 1998
Filed:
Jul. 10, 1996
Applicant:
Inventors:
Hans-Jurgen Langer, Hespe, DE;
Martin Mehlert, Nienstaedt, DE;
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
198834 ; 198330 ; 474 61 ;
Abstract
In a drive sprocket of a passenger conveyer, such as an escalator, having a step chain, the sprocket is provided with an overlay attached to the side of the drive sprocket. The overlay cushions the chain as it engages the drive sprocket teeth to thereby minimize the noise generated by the engagement of the drive sprocket and the step chain. In a particular embodiment, a drive sprocket further includes a plate that provides lateral support of the overlay during engagement with the step chain.