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| Number | Title | Issue Date |
| 7270218 | Sealing device for elevator door A device moves a door seal for a displaceable door panel of an elevator car in an elevator installation with an elevator shaft having shaft doors. The movable door seal is arranged so that the door panel in a closed state is sealed off. The device includes an entrai... | 09/18/2007 |
| 7252179 | Elevator-door latching and opening device Elevator doors have operating bars that are pivoted on a car door and that serve to actuate shaft-door actuating rollers that operate shaft doors. These doors are operated by an apparatus having an actuating device that changes a spacing between the operating bars a... | 08/07/2007 |
| 7246688 | Elevator door system An elevator door system includes an elevator car having a front face defining a door opening. At least one elevator door is coupled to the front face of the elevator car for movement between an open position exposing the door opening and a closed position covering t... | 07/24/2007 |
| 7100745 | Equipment at an elevator car for temporarily coupling a car door leaf with a shaft door leaf for actuation of a car door unlocking means Equipment for temporarily coupling an elevator car door leaf with a shaft door leaf and for actuating a car door lock includes a coupling mechanism arranged at the car door leaf with two entraining runners mounted on two pivotable adjusting elements. The spacing bet... | 09/05/2006 |
| 7097002 | Elevator door drive device An elevator door drive device, which opens and closes at least one car door leaf and a corresponding shaft door leaf, includes a coupling mechanism mounted at the car door leaf for transmitting the car door leaf movement to the shaft door leaf with two parallel entr... | 08/29/2006 |
| 7013605 | Door suspension apparatus A door suspension assembly includes a ferromagnetic flat plate horizontally extending from a support rail adapted to be attached to a door frame above a doorway or entrance portal. Two supporting blocks each have an opening in which a cylindrical bearing with an axi... | 03/21/2006 |
| 6943508 | Tubular linear synchronous motor control for elevator doors An apparatus for effecting non-contact linear door displacement comprising a tubular motor formed of a stator (1) formed from a plurality of magnets (21) arranged along a linear axis (15), and at least one thrust block (3) each formed of ... | 09/13/2005 |
| 6742631 | Secondary part of a linear motor, method for the production thereof, linear motor with secondary part and use of the linear motor A secondary part of a linear motor, for use in an elevator installation, includes a frame having a plurality of free spaces formed therein, each of the free spaces being surrounded by an inner surface of the frame, at least one magnet positioned in an associated one... | 06/01/2004 |
| 6513628 | Support for lift door drive A carrier for the reception of all important components of a door drive. The carrier has a base part and a length adapter, which are connectible together in such a manner that carriers of different lengths can be produced so that the carrier can be used i... | 02/04/2003 |
| 6328133 | Elevator door with improved clutch device Disclosed is an elevator door with an improved clutch device suitable for increasing clutch speed and decreasing clutch distance of a car door and a hatch door. The elevator door with an improved clutch device comprises a hatch door having a pair of clutc... | 12/11/2001 |
| 5701973 | Linear belt door operator Disclosed is a door operator mounted in a space between a cab fascia and a sill edge plane. A feature of the door operator is a drive unit connected to a drive pulley, the drive unit being mounted in a central portion of the door operator, wherein the dri... | 12/30/1997 |
| 5668355 | Elevator cab door drive system The door or doors on an elevator cab are driven during their opening and closing cycles by a linear induction motor drive system. The primary of the linear motor is fixed to the cab assembly, and the secondary is mounted on the door hanger panel and moves... | 09/16/1997 |
| 5659160 | Linear belt door operator Disclosed is a door operator mounted in a space between a cab fascia and a sill edge plane. A feature of the door operator is a drive unit having a drive shaft, the drive unit being mounted in a central portion of the door operator, wherein drive pulleys ... | 08/19/1997 |
| 5636714 | Bi-parting elevator door actuator apparatus A bi-parting elevator door actuator apparatus operably connected to a bi-parting door assembly having 1) a door interlock and power control assembly; 2) a bi-fold door actuator assembly; and 3) an electrical control circuit. The door interlock and power c... | 06/10/1997 |
| 5317934 | Variable speed linear actuator An apparatus that converts a rotary motion into linear motion through the use of a linkage system that has a pair of levers that are driven through a pulley arrangement. Wherein, the pair of levers and pulley arrangement are configured to produce a variab... | 06/07/1994 |
| 5213182 | Elevator door operator cog belt linkage A system for opening and closing an elevator door panel utilizes a linkage which attaches a belt to the panel. The system is further characterized by a first portion of the belt having a first end and a second end, a housing for holding the first end in c... | 05/25/1993 |
| 4548298 | Rotor and screw elevator equipped with a fail-safe control system The invention comprises two embodiments of a hydraulically powered rotor and screw elevator equipped with a fail-safe control system. In each embodiment a dual lead steep-pitched screw is embraced by a rotor supporting the cab. In one embodiment the rotor... | 10/22/1985 |
