Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1978-10-23
1980-11-04
Spar, Robert J.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
180282, 414631, B66B 920
Patent
active
042314500
ABSTRACT:
An overload warning system for an industrial lift truck including a fluid supported rear suspension, pressure responsive switches communicating with the fluid suspension, and a mast height sensor. One pressure switch is actuatable by a first preset pressure in the fluid suspension to signal the presence of a lift overload with the lift mast retracted. The other pressure switch is actuable by a second preset pressure in the fluid suspension and coacts with the mast height sensor to signal the presence of a lift overload with the lift mast extended.
REFERENCES:
patent: 2704132 (1955-03-01), Marco
patent: 2751994 (1956-06-01), Remde
patent: 3630317 (1971-12-01), Jacobsson
Frederick Sherman B.
Harrom Harley A.
Hedtke Robert G.
Kelley, Jr. Wilfred H.
Noland Kenneth
Spar Robert J.
White Farm Equipment Company
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