Fire escape – ladder – or scaffold – With indicator – signal or alarm
Patent
1998-08-28
2000-02-01
Chin-Shue, Alvin
Fire escape, ladder, or scaffold
With indicator, signal or alarm
182148, E06C 100
Patent
active
060191902
ABSTRACT:
A work assist vehicle includes a self propelled, steerable body having a chassis and a drive mechanism supported on the chassis; a mast assembly coupled to the body; and, a personnel compartment attached to the mast assembly and being movable by the mast assembly toward and away from the body. The body further includes a cover adapted to extend over a portion of the chassis and a weight sensor assembly coupled to the chassis and the cover. The weight sensor assembly is capable of detecting if someone or something is located on the cover.
REFERENCES:
patent: 4311208 (1982-01-01), Macrovie
patent: 5337859 (1994-08-01), Neubauer
patent: 5853065 (1998-12-01), Hutson
patent: 5875869 (1999-03-01), Busuttil
Gilliland Kevin A.
Heidemann William J.
Luebrecht Donald E.
Ranly Matthew P.
Smith David B.
Chin-Shue Alvin
Crown Equipment Corporation
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