Patent application number | Description | Published |
20110259676 | WEAR AND FRICTION CONTROL OF METAL ROPE AND SHEAVE INTERFACES - A coated sheave ( | 10-27-2011 |
20110297488 | ELEVATOR SYSTEM DOOR FRAME THAT SUPPORTS GUIDE RAILS - An exemplary elevator door frame includes a sill member and a header member. A plurality of jamb members are generally perpendicular to the sill member and the header member. A plurality of guide rail brackets are supported on at least one of the sill member, the header member or one of the jamb members. The guide rail brackets are configured to receive a portion of a guide rail. | 12-08-2011 |
20110318497 | HOISTWAY SHEAVE RESURFACING - A method of and system for repairing the sheaves ( | 12-29-2011 |
20130056306 | Braking Device for a Door Operator - A device for inhibiting the closing of a door that controls entry of an enclosure includes a first magnet disposed on a driven portion of the device and a second magnet disposed on a fixed portion of the enclosure. The first magnet and the second magnet are configured to be in register with each other as the door moves toward a closed position such that if the first magnet and the second magnet are in register with each other, a pole of the first magnet is in close proximity of a pole of the second magnet such that the first magnet and the second magnet react to each other to inhibit motion of the door towards the closed position. | 03-07-2013 |
20130277879 | ELEVATOR LOAD BEARING MEMBER HAVING A JACKET WITH AT LEAST ONE ROUGH EXTERIOR SURFACE - An illustrative method of making a load bearing member for use in an elevator system includes mechanically roughening at least one surface on an exterior of a jacket of the load bearing member to establish a friction characteristic that facilitates engagement between an elevator system sheave and the roughened surface. | 10-24-2013 |
20140291076 | ELEVATOR SYSTEM BELT - A belt for suspending and/or driving an elevator car includes a plurality of wires arranged into a plurality of cords. The plurality of cords includes one or more inner cords located at an innermost portion of the belt relative to a lateral end of the belt and one or more outer cords located laterally outboard of the one or more inner cords. The one or more outer cords have a construction distinct from the one or more inner cords. A jacket substantially retains the plurality of cords. | 10-02-2014 |
20150375963 | ELEVATOR CORD HEALTH MONITORING - A method of fault detection of a belt or rope includes connecting a fault detection unit to at least a portion of a belt or rope including a plurality of wires arranged in a plurality of strands and/or cords. At least the portion of the belt or rope is subjected to an AC voltage of high frequency range and an electrical impedance of the portion of the belt or rope is measured via the fault detection unit. Using at least the measured electrical impedance of the portion of the belt or rope, a fault condition of the belt or rope is determined. | 12-31-2015 |
20160002006 | ELEVATOR CORD HEALTH MONITORING - A method of fault detection of a belt or rope includes interconnecting a plurality of cords of the belt or rope, the cords including a plurality of wires, to form a bridge circuit. A fault detection bridge circuit is subjected to a voltage excitation and outputs a voltage which is indicative of the belt or rope damage but remaining insensitive to other environmental noises. | 01-07-2016 |