Elevator

Details Elevator Elevator

2007-05-29

2007-05-29

Crawford, Gene O. (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes linking support cable in drive-means

C187S261000, C187S251000, C182S144000, C182S148000, C182S150000, C254S266000, C254S375000

Reexamination Certificate

active

11075732

ABSTRACT:
An elevator is described, comprising a first series connected pulley set installed in a fixing frame, a carriage located below the first series connected pulley set, a second series connected pulley set installed on the top of the carriage, a rotary wheel installed in the carriage and a steel rope. The steel rope connects the first series connected pulley set, the second series connected pulley set and the rotary wheel, so that the gravity load of one pulley set can belowered to decrease the pulling force of the steel rope to enhance the safety of the elevator.

REFERENCES:
patent: 373114 (1887-11-01), Merrill et al.
patent: 3915432 (1975-10-01), Bustamante
patent: 4624097 (1986-11-01), Wilcox
patent: 2005/0217944 (2005-10-01), Aulanko et al.

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