Pretensioning system for synchronization and positioning system

Details Pretensioning system for synchronization and positioning system Pretensioning system for synchronization and positioning system

1996-11-07

1998-10-13

Young, Karen M.

Elevator, industrial lift truck, or stationary lift for vehicle

With barrier for regulating access to load support

Includes motor or motor driven linkage for shifting barrier

49121, 49123, E15F 1520

Patent

active

058198784

ABSTRACT:
A pretensioning system for a relating cable synchronizing movement of elevator car doors includes a compression spring and a spacer disposed on one end of the relating cable. The compression spring is compressed to the length of the spacer disposed internally to the spring to calibrate tension in the relating cable so than a no-slip condition is ensured.

REFERENCES:
patent: 1232439 (1917-07-01), Spitzfaden
patent: 1966182 (1934-07-01), McCormick
patent: 5297782 (1994-03-01), Dombrowski et al.
patent: 5347755 (1994-09-01), Jaster et al.
patent: 5701973 (1997-12-01), Tracey

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