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A self contained protective enclosure with an opening for entry and egress and a screen for ventilation and viewing.
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| Number | Title | Issue Date |
| 7322445 | Stop bar for creating a temporary safety space within an elevator hoistway A device and procedure for creating and securing a temporary safety space within an elevator hoistway such that a service or maintenance technician can work with impunity from a car entering the safety space. In particular, the device includes a stop bar for install... | 01/29/2008 |
| 7249656 | Buffer and elevator installation with such a buffer A buffer supports an elevator car and/or a counterweight for the elevator car, wherein the elevator car and the counterweight are each movable along a respective path in an elevator shaft. The buffer partly projects into the path of the elevator car and the path of ... | 07/31/2007 |
| 7237655 | Elevator system and method for preventing unauthorized hoistway access An arrangement and method for preventing unauthorized access of personnel into the hoistway of an elevator system. The arrangement includes a security device for mounting in the vicinity of an auxiliary release mechanism of a landing door to prevent actuation of the... | 07/03/2007 |
| 7228943 | Elevator apparatus with position correction for overspeed detection An elevator apparatus has a criterion (overspeed levels) that changes in accordance with an operational condition of a car. The elevator apparatus also has a position information correcting means that corrects an error in value that determines the criterion. In the ... | 06/12/2007 |
| 7077243 | Elevator installation with a buffer for creating a zone of protection in an elevator installation and a method of creating a zone of protection A buffer creates at least one zone of protection in an elevator installation including an elevator car and a counterweight movable along respective paths in an elevator shaft. The buffer has a movable portion movable into the path of the elevator car and/or into the... | 07/18/2006 |
| 6874244 | Elevator installation with a measuring system for determining absolute car position An elevator car position measuring system includes a strip having a code mark pattern mounted near the elevator car and parallel to a travel direction, a code reading device mounted on the elevator car for contactless scanning of the code mark pattern and an evaluat... | 04/05/2005 |
| 6382361 | Elevator An elevator system in which an elevator-car and a counter weight are suspended on a pulley system in a hoistway. The elevator system includes a receiving unit for receiving an electric power from a feeding unit provided in the hoistway, an inverter for co... | 05/07/2002 |
| 6138798 | Elevator safety system incorporating false pit The elevator safety device creates a false pit beneath the elevator frame using left and right laterally-spaced, fixed stop members fixedly attached to the car frame, and left and right laterally-spaced safety columns affixed to the pit floor and pivotabl... | 10/31/2000 |
| 6082498 | Normal thermal stopping device with non-critical vane spacing A normal terminal stopping device (NTSD) using terminal zone position checkpoint detection with a binary coding method to identify a checkpoint within a terminal zone, and a digital shaft encoder mounted on the shaft of the hoist motor to determine a car ... | 07/04/2000 |
| 6032761 | Elevator hoistway terminal zone position checkpoint detection apparatus using a binary coding method for an emergency terminal speed limiting device An emergency terminal speed limiting device (ETSLD) uses terminal zone position checkpoint detection with a binary coding method for the sensible stationary part mounted in the terminal zone. Instead of using three separate stationary vanes of different l... | 03/07/2000 |
| 5889238 | Deceleration time for an elevator car A method of adjusting an elevator speed comprising the steps of determining a desired creep period, determining an actual creep period, determining a difference between the desired creep period and the actual creep period, determining a deceleration time ... | 03/30/1999 |
| 5864103 | Limit switch apparatus for hydraulic elevators An apparatus for generating function signals to an elevator controller for controlling an elevator car (1) at terminal landings in a building includes an upper cam (3) and a lower cam (4) for mounting on a wall (2a, 2b) in an elevator shaft (2) at a top l... | 01/26/1999 |
| 5783783 | Correction run for an elevator system A method for performing a correction run by an elevator system having an elevator car following a loss of an elevator car position information includes: detecting a terminal landing magnet in response to the loss of the elevator position information; movi... | 07/21/1998 |
| 5637842 | Elevator safety device An elevator safety device in which a counterweight cam is attached to the counterweight and top terminal landing final limit switches are disposed below the bottom terminal landing of the hoistway so that it is operated by the counterweight cam. The top t... | 06/10/1997 |
| 5637841 | Elevator system An elevator system includes a CPU to dictate speed signals during a normal elevator car run, and a normal terminal stopping device (NTSD) to dictate maximum allowable speeds approaching the top and bottom terminal floors. The NTSD system normally operates... | 06/10/1997 |
| 5276292 | Operation check device of dynamic brake circuit for elevator In this invention, a provision is made for a means for detecting the voltage or current of a dynamic brake regenerative (DBR) circuit for determining whether the DBR circuit is properly functioning in an elevator system in which a DBR circuit for controll... | 01/04/1994 |
| 5247139 | Two-channel forked light barrier detecting vertical position A two-channel forked fail-safe light barrier generates shaft position information in the region of the floors for the premature opening of the doors on arrival of an elevator car and includes a cyclical dynamic self-monitoring circuit by means of which a ... | 09/21/1993 |
| 4971178 | Elevator system with independent limiting of a speed pattern in terminal zones A feedback controlled elevator system driven by a traction drive motor in response to a speed pattern provided by a car controller. The speed pattern is limited when the car approaches a terminal floor within a predetermined terminal slowdown zone adjacen... | 11/20/1990 |
| 4747242 | Two level structure for parking vehicles or storing goods A two level structure for parking vehicles or storing goods, which structure comprises a sunken pit, first and second spaced apart platform members which are for receiving the vehicles or the goods, support means which is mounted on the first platform mem... | 05/31/1988 |
| 4691807 | Elevator control apparatus An elevator control apparatus for controlling operation of a cage in an elevator system in which a normal speed command signal is generated having a normal pattern providing gradually decreasing terminal speed as the cage approaches a level of a terminal ... | 09/08/1987 |
| 4635820 | Bulk unloader of solidified thermoplastic material from pails and drums An apparatus for unloading heat meltable material from a container including a vertically moveable platen assembly having a platen supported by a platen carriage. The weight of the platen assembly is trapped between a balance spring which urges the platen... | 01/13/1987 |
| 4503939 | Elevator system A speed switch for an elevator system which obtains its information from distance pulses generated in response to car travel. The reference speed setting of the switch is a function of the desired predetermined speed at which the switch is to operate, the... | 03/12/1985 |
| 4499974 | Terminal slowdown speed pattern generator Methods and apparatus for providing a desired terminal slowdown speed pattern as an elevator car approaches a terminal floor in the terminal slowdown zone. Markers are fixedly spaced in the zone, with their spacing being a direct function of their distanc... | 02/19/1985 |
| 4489811 | Apparatus for decelerating elevator at terminating floor An apparatus for decelerating an elevator at a terminating floor having a plurality of terminating detectors successively provided in the vicinity of the terminating floor for generating a terminating deceleration command value gradually decreasing upon o... | 12/25/1984 |
| 4456096 | Terminal slowdown apparatus for elevator A terminal slowdown apparatus for an elevator which reads in outputs given by contacting a car with terminal detectors placed depending upon a terminal floor to operate a terminal slowdown signal which is reduced depending upon the distance to the termina... | 06/26/1984 |
| 4356896 | Elevator terminal deceleration system A system which includes a micro-computer which is responsive to an elevator car reaching a predetermined distance from a terminal floor and arranged to calculate a residual distance between the actual position of the car and the floor so as to generate a ... | 11/02/1982 |
| 4318456 | Terminal slowdown control for elevator system An elevator system which initiates terminal slowdown in response to a comparison between a terminal slowdown speed pattern signal and the normal or desired speed pattern signal. The terminal slowdown speed pattern signal is generated in response to the ac... | 03/09/1982 |
| 4225015 | Terminal slowdown apparatus for elevator A terminal slowdown apparatus for an elevator comprises an acceleration detecting circuit which detects an acceleration in the normal speed pattern or an acceleration of the cage; a relative speed pattern generator which generates a relative speed pattern... | 09/30/1980 |
| 4161236 | Elevator system An elevator system including an elevator car mounted for guided movement in the hoistway of a building having a plurality of floors. The speed of the elevator car versus its position is monitored in terminal zones adjacent to the terminal floors, as the e... | 07/17/1979 |
| 4128141 | Elevator system An elevator system including an elevator car mounted for guided movement in a vertical travel path. A signal related to car velocity is modified by a signal related to car acceleration. The modified velocity signal is utilized in a speed monitoring system... | 12/05/1978 |
| 4067416 | Elevator system An elevator system including terminal slowdown control which includes a source which provides a beam of electromagnetic radiation, a receiver of such radiation, and spaced markers disposed in a terminal zone which interrupts the beam of electromagnetic ra... | 01/10/1978 |
