Apparatus for controlling a hydraulic elevator

Details Apparatus for controlling a hydraulic elevator Apparatus for controlling a hydraulic elevator

1984-08-27

1986-06-10

Shoop, Jr., William M.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

B66B 126

Patent

active

045937923

ABSTRACT:
An apparatus for controlling a hydraulic elevator in which a bias pattern signal for operating an electric motor at such a low speed that the cage will not move is superposed on a running pattern signal for running the cage, and the electric motor is controlled by the thus superposed pattern signals. Therefore, the amount of oil flowing into or out of the cylinder increases nearly in synchronism with the start of the running pattern, and the cage moves smoothly without generating vibrations.

REFERENCES:
patent: 2359112 (1944-09-01), Hymans
patent: 2565880 (1951-08-01), Pettengill et al.
patent: 4509127 (1985-04-01), Yuki et al.
patent: 4534452 (1985-08-01), Ogasawara et al.

Affiliated with

Also associated with

Rating

Apparatus for controlling a hydraulic elevator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for controlling a hydraulic elevator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling a hydraulic elevator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2403304