Elevator having second driving device

Details Elevator having second driving device Elevator having second driving device

2008-07-29

2008-07-29

Cuomo, Peter M. (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Having specific load support drive-means or its control

Includes threaded rider mating with support screw in...

C187S267000, C074S089260, C074S089290, C074S089230

Reexamination Certificate

active

07404468

ABSTRACT:
An elevator includes an elevator car guided to move up and down relative to a supporting member, a screw shaft having an upper end attached to the supporting member, a driving nut rotatably supported in a coupling device and threaded with the screw shaft, one driving device coupled to rotate the screw shaft and to move the driving nut up and down along the screw shaft, and a coupling device rotatably attached onto the driving nut and coupled to the elevator car. Another spare driving device may further be coupled to drive the screw shaft for moving the elevator car to a lower level or a safe location when the driving device either fails or is damaged.

REFERENCES:
patent: 3381541 (1968-05-01), Thireau et al.
patent: 3815710 (1974-06-01), Shrum
patent: 3881575 (1975-05-01), Manaugh
patent: 4635491 (1987-01-01), Yamano et al.
patent: 4742891 (1988-05-01), Kunii et al.
patent: 4747320 (1988-05-01), Nilsson
patent: 5339704 (1994-08-01), Lindberg

Affiliated with

Also associated with

Rating

Elevator having second driving device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Elevator having second driving device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator having second driving device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2775100