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:
Dec. 04, 2001
Filed:
Jul. 19, 2000
Juan A. Lence Barreiro, Santiago de Compostela, ES;
Harry Z. Huang, Plainville, CT (US);
Chouhwan Moon, Glastonbury, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
Braking distance (S,) and traction slippage distance (S,) are measured with an empty elevator car (,) traveling upwardly (S,, S,) and downwardly (S,, S,). From these measured distances, the following are calculated and/or determined: maximum and minimum deceleration, a,, a,, braking force, F,, available to stop the car when traveling downwardly with a full load; braking force available when traveling upwardly, F,, and downwardly, F,, while empty; difference in braking force provided by two sides of the brake; whether the relationship of traction slippage to tension ratio ((FIG. 5) is within the safe, linear portion or within the unsafe, non-linear portion; and whether leveling errors are caused by faulty brakes, excess traction slippage, or neither.