Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes control for power source of drive-means
Patent
1994-08-15
1997-03-18
Nappi, Robert
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes control for power source of drive-means
187295, B66B 126
Patent
active
056125178
ABSTRACT:
Process and apparatus for controlling a hydraulic lift wherein with this process, a direct approach to a floor can be achieved without requiring a creeping velocity drive, whereby the car is controlled in a position-dependent manner during the deceleration phase, for the purpose of which a control region is formed which is subdivided into percentage values, the percentage values being retained in tabular form with reference to measured actual position values and upon input of a specific actual position value, the corresponding percentage value is multiplied with the value of the control region (CS) and to this product eventually are added a control deviation (CO) and a pilot control signal (SO) wherein the sum which constitutes the actual control signal used during the deceleration phase, is forwarded to a regulation valve arrangement. An apparatus for carrying out the process is also set forth.
REFERENCES:
patent: 4527662 (1985-07-01), Doane et al.
patent: 4715478 (1987-12-01), Nakamura et al.
patent: 4976338 (1990-12-01), Holland
patent: 5040639 (1991-08-01), Watanabe et al.
patent: 5099957 (1992-03-01), Eriksson
patent: 5266756 (1993-11-01), Hatano
Inventio AG
Nappi Robert
LandOfFree
Process and apparatus for controlling a hydraulic lift does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process and apparatus for controlling a hydraulic lift, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for controlling a hydraulic lift will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1707722