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:
Jun. 23, 2009
Filed:
Oct. 07, 2003
Dirk Heinrich Tegtmeier, Berlin, DE;
Kristian Bernhard Wittjen, Berlin, DE;
Dirk Heinrich Tegtmeier, Berlin, DE;
Kristian Bernhard Wittjen, Berlin, DE;
Otis Elevator Company, Farmington, CT (US);
Abstract
Elevator () comprising a car (), a counterweight (), a hoisting rope () for suspending the car () and the counterweight (), a drive motor (), a motor drive unit () for supplying the power to the drive motor (), and a brake () for stopping the movement of the car () in an emergency situation, the elevator () further comprising an elevator rescue system (), comprising an emergency power supply (), an emergency brake switch () for connecting and disconnecting the power of the emergency power supply () to the brake (), and an emergency drive switch () for connecting and disconnecting the power of the emergency power supply () to the drive motor (), characterised in that the elevator rescue system () further comprises the motor drive unit () and a power line () connecting the emergency power supply () with the motor drive unit () and including the emergency drive switch ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile