Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1998-07-14
2000-10-24
Wu, Daniel J.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
3405731, 340665, 180273, B60Q 100
Patent
active
061373982
ABSTRACT:
A materials handling vehicle is provided with a frame including an operator's compartment having an entrance, a drive mechanism supported on the frame, a material handling unit coupled to the frame, and a device including an actuator located across the threshold of the entrance of the operator's compartment. The device generates an alert signal when a portion of an operator's body engages the actuator.
REFERENCES:
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patent: 4630700 (1986-12-01), Larsson
patent: 4840248 (1989-06-01), Silverman
patent: 5579859 (1996-12-01), Quellhorst et al.
patent: 5586620 (1996-12-01), Dammeyer et al.
Dunlap Danny L.
Kahlig Daniel W.
Niemeyer Larry A.
Romer Martin E.
Soder Patrick A.
Crown Equipment Corporation
Huang Sihong
Wu Daniel J.
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