Safety system for lift trucks

Details Safety system for lift trucks Safety system for lift trucks

1997-03-28

1999-11-30

Gibson, Randy W.

Weighing scales

With alarm or signal

177141, 177210R, 361 87, 414 21, 701 50, 702 64, 702174, 702175, G01G 2318, G01G 1910, G01G 314

Patent

active

059946504

ABSTRACT:
In order to increase safety of lift trucks, a weight indication for the driver is provided so that the driver may know how heavy a load he is handling,. This weight indication is obtained by measuring the current to the motor of the hydraulic pump. In order to eliminate the risk that monetary variations may result in faulty measurements preferably a mean value of current is taken for a certain time or the value of the measured current is added during a fixed time interval. Obtained values are then multiplied by a conversion factor so that the weight in, for instance, kilograms is obtained and delivered to a suitable display device. Obtained values also may be used to provide a warning by sound or light should the load exceed the maximum allowed.

REFERENCES:
patent: 3722660 (1973-03-01), Snead
patent: 4068773 (1978-01-01), Downing et al.
patent: 4560110 (1985-12-01), Burda
patent: 4771837 (1988-09-01), Appleton et al.
patent: 4792004 (1988-12-01), Sheffield
patent: 4942529 (1990-07-01), Avitan et al.
patent: 5167287 (1992-12-01), Pomies
patent: 5238086 (1993-08-01), Aoki et al.
patent: 5393939 (1995-02-01), Nasuta, Jr. et al.
patent: 5597282 (1997-01-01), Hoffman et al.
patent: 5648887 (1997-07-01), Herndon et al.
patent: 5666295 (1997-09-01), Bruns
patent: 5698957 (1997-12-01), Sowada
Gene Franklin, et al., Feedback Control of Dynamic Systems, Addison-Wesley Publishing Co., Reading, Mass., pp. 31-38, May 1987.

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