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:
Aug. 25, 1998
Filed:
Jan. 26, 1996
Sanjay Kamani, Unionville, CT (US);
John K Salmon, deceased, late of South Windsor, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
A governor for a moving device, such as an elevator, includes a primary assembly that generates a magnetic field and a secondary assembly extending through the generated magnetic field. The assemblies define a rotor and a stator that rotate at a relative speed that is proportional to the speed of the moving device. The stator is biased into a stationary position. If the relative rotational speed exceeds a predetermined limit, the bias on the stator is overcome by the interaction of the secondary assembly with the magnetic field. Movement of the stator away from the stationary position actuates an apparatus to prevent an overspeed condition of the moving device.