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. 23, 1993
Filed:
Sep. 23, 1991
Applicant:
Inventors:
John Hornyack, Tolland, CT (US);
Louis Bialy, Simsbury, CT (US);
Rajendra V Mistry, Farmington, CT (US);
Assignee:
Otis Elevator Company, Farmington, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66B / ;
U.S. Cl.
CPC ...
187 17 ; 187 68 ;
Abstract
A mechanism is placed between a plunger and an elevator car to damp the effects of stick-slip encountered during elevator start-up and to minimize the probability of damage to a plunger/cylinder assembly if the elevator car is stopped in an emergency. The mechanism comprises a self-leveling hydraulic shock absorber that operates independently of any stick-slip between the plunger and cylinder.