Claims
- 1. An elevator assemblage of the type which derives motive power for movement through a hoistway from a linear motor mounted on an elevator counterweight assembly, said elevator assemblage comprising:
- a) a counterweight frame;
- b) a flat linear motor mounted on said counterweight frame, said linear motor being mounted centrally on said frame whereby said frame includes side portions which in part flank said linear motor;
- c) a flat steel strip disposed adjacent said counterweight frame, said steel strip being elongated in the vertical direction of the hoistway, said steel strip including a central portion facing said linear motor, which central portion is coated with a highly electrically conductive material coating whereby said coated central portion of said steel strip serves as a stator for said linear motor and said steel strip having side margins flanking said central portion which are uncoated exposed steel; and
- d) brake means mounted on said counterweight frame for engaging only said exposed steel side margins of said steel strip to selectively stop movement of said counterweight assembly in the hoistway.
- 2. The elevator assemblage of claim 1 further comprising guide rollers on said frame for engaging only said side margins of said steel strip to guide movement of said counterweight assembly over said steel strip, and to maintain a preferred spacing between said linear motor and said stator.
- 3. The elevator assemblage of claim 2 further comprising side rollers mounted on said frame for engaging side edges of said steel strip to control side thrust of said counterweight assembly in the hoistway.
- 4. The elevator assemblage of claim 1 wherein said brake means comprise an even number of electromagnetic brake modules, with one half of said even number of brake modules being mounted on one side portion of said frame, and with the other half of said even number of brake modules being mounted on an opposite side portion of said frame, said brake modules being operable to selectively engage said steel side margins of said steel strip to control floor stopping of the elevator assemblage.
- 5. The elevator assemblage of claim 4 wherein said brake means further comprises safety gears mounted on said side portions of said frame for selectively engaging said steel side margins of said steel strip for emergency stopping of said counterweight assembly.
- 6. A stator/guide member for use with a linear motor elevator assemblage, said member comprising an elongated flat steel strip having a medial portion of one surface thereof coated with a layer of a highly electrically conductive material; and said steel strip having marginal edge portions thereof which are formed from exposed steel, said medial portion of said strip serving as a stator for a linear motor carried by a component of the elevator assemblage, and said marginal edge portions of said strip serving as contact surfaces for brakes disposed on the component of the elevator assemblage which carries the linear motor.
- 7. An elevator assemblage of the type which includes a counterweight assembly having a linear motor mounted thereon for deriving motive power for moving the assemblage through a hoistway, said assemblage comprising:
- a) an elongated stator/guide member in the hoistway adjacent to the counterweight assembly, said member being formed from steel and having a stator portion thereof coated with a layer of a highly electrically conductive material, said stator portion of said member being closely adjacent to said linear motor, and said member further including exposed steel contact surfaces for controlling movement of the counterweight assembly in the hoistway,
- b) a plurality of guide rollers mounted on said counterweight assemblage and disposed in contact with said contact surfaces on said stator/guide member, said guide rollers being operable to position said counterweight assembly on said stator/guide member and being free of contact with said stator portion of the latter, and
- c) brake means mounted on said counterweight assembly, said brake means being operable to stop movement of said counterweight assembly by selectively engaging said contact surfaces on said stator/guide member and said brake means being at all times free of contact with said stator portion of said stator/guide member.
- 8. An elevator counterweight assembly comprising:
- a) a frame;
- b) a flat linear motor mounted centrally on said frame;
- c) an even number of electromagnetic brake modules mounted on said frame, with one half of said even number of brake modules being mounted on said frame to one side of said linear motor, and the other half of said even number of brake modules being mounted on said frame to the opposite transverse side of said linear motor; and
- d) an emergency safety gear mechanism mounted on said frame in co-alignment with said brake modules.
Parent Case Info
This is a continuation of copending application(s) Ser. No. 07/318,293 filed on 03/03/89 now aband.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3101130 |
Bianca |
Aug 1963 |
|
4402386 |
Ficheux et al. |
Sep 1983 |
|
4570753 |
Ohta et al. |
Feb 1986 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
62-136476 |
Aug 1987 |
JPX |
63-117884 |
May 1988 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
318293 |
Mar 1989 |
|