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. 11, 2025
Filed:
May. 29, 2020
Cedes Ag, Landquart, CH;
Marcial Lendi, Näfels, CH;
Alex Ackermann, Heiligkreuz, CH;
CEDES AG, Landquart, CH;
Abstract
Method for monitoring the speed of an elevator car, with the car door in particular unlocked, within the unlocking zone of the elevator shaft, having a first speed-limit curve, having a first switchover event, having a second speed-limit curve, and having a second switchover event. The first speed-limit curve has a range of values between a first maximum value at the entry to the unlocking zone and a first minimum value at the envisaged stopping point. The first switchover event corresponds to the car traveling beyond the stopping point or to a stoppage within the unlocking zone. The second speed-limit curve has a range of values between a second maximum value at the envisaged stopping point and one or two second minimum values at the entry to, and exit from, the unlocking zone. The second switchover event corresponds to a departure signal or to the locking of the car door.