Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes linking support cable in drive-means
Patent
1998-01-26
1999-10-26
Noland, Kenneth W.
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes linking support cable in drive-means
187270, B66B 1108
Patent
active
059711086
ABSTRACT:
A safety device for vertically moving load carrier is disclosed. It includes a vertical column, a retainer, a vertical safety rack, a pivot shaft, a safety detent pivotally fitted on the pivot shaft and a resilient member. When a flexible transmission belt disposed in the vertical column is in a normally sealedly installed state, the safety detent is positioned in a first position without contacting with the safety rack. While in case the transmission belt is accidentally broken and in a loosened state, the safety detent is forced by the resilient member and rotated to a second position in contact with the safety rack. In the second position, the engaging section of the safety detent is just engaged with a horizontal section of one tooth of the safety rack so that the retainer and the load carried thereby are kept stationary at a certain height without abruptly dropping down to cause accident.
REFERENCES:
patent: 3693761 (1972-09-01), Fitzgibbon
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