Claims
- 1. An elevator cab assembly guidence system for guiding movement of a cab assembly over elevator guide rails in a hoistway, said guidence system comprising:
- a) a guide roller assembly mounted on said cab assembly for movement toward and away from an associated one of the guide rails, said guide roller assembly comprising a guide roller mounted thereon for rolling engagement with the guide rail;
- b) stop means operable to limit the extent of movement of said guide roller in a direction away from the guide rail; and
- c) adjustment means connected to said guide roller assembly and operable to prevent prolonged contact between said guide roller assembly and said stop means during operation of the elevator.
- 2. An elevator guide method for guiding an elevator car along a hoistway rail with horizontal motions controlled by means of an actuator, comprising the steps of:
- sensing horizontal acceleration of the elevator car for providing a sensed acceleration signal;
- sensing relative horizontal displacement between the car and the rail for providing a sensed displacement signal; and
- controlling the horizontal motions by means of said actuator in response to said sensed acceleration and displacement signals.
- 3. Apparatus for guiding an elevator car along a hoistway rail with controlled horizontal motions, comprising:
- a controller, responsive to a sensed horizontal acceleration signal indictive of horizontal acceleration of the elevator car and responsive to a sensed horizontal displacement signal indicative of relative horizontal displacement between the elevator car and the rail, for providing a control signal; and
- an actuator, responsive to the control signal, for controlling the horizontal motions.
- 4. The apparatus of claim 3 wherein said actuator comprises:
- a) a guide roller assembly mounted on said elevator car for movement toward and away from said hoistway rail, said guide roller assembly comprising a guide roller mounted thereon for rolling engagement with the hoistway rail;
- b) stop means operable to limit the extent of movement of said guide roller in a direction away from the hoistway rail; and
- c) adjustment means connected to said guide roller assembly and operable to prevent prolonged contact between said guide roller assembly and said stop means during operation of the elevator car.
- 5. The apparatus of claim 3, wherein said actuator comprises:
- a base for attachment to the elevator car;
- three wheels, one for rolling on a distal end of a blade of said rail and two for rolling on opposing sides of said blade; and
- actuator means attached to the base and the three wheels.
Parent Case Info
This is a divisional of application Ser. No. 08/076,501 filed Jun. 11, 1993, now U.S. Pat. No. 5,322,144 is a continuation of application Ser. No. 07/731,292 filed Jul. 16, 1991 which is a continuation-in-part of application Ser. No. 07/555,130 filed on Jul. 18, 1990.
US Referenced Citations (35)
Foreign Referenced Citations (1)
Number |
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0033184 |
Aug 1981 |
EPX |
Divisions (1)
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Number |
Date |
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76501 |
Jun 1993 |
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Continuations (1)
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731292 |
Jul 1991 |
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Continuation in Parts (1)
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555130 |
Jul 1990 |
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