Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes threaded rider mating with support screw in...
Patent
1994-12-21
1996-11-05
Noland, Kenneth
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes threaded rider mating with support screw in...
187206, B66B 902
Patent
active
055707580
ABSTRACT:
A lifting apparatus is provided, in particular a lifting platform, in which a lifting carriage, upon which the load to be lifted can be placed, can be displaced along an arrester rod which is provided with screw threading and on which there is driven by the lifting carriage an easily moveable arrester nut. The arrester nut is supported on its top and bottom by the lifting carriage in such a way that it can rotate, and in this connection the lifting carriage has a braking element which can be brought into a working relationship with the arrester nut in order to prevent any further rotation of the arrester nut. In order to improve the functioning of this arrester apparatus so that it always leads surely to a catching of the falling lifting carriage, even under particularly adverse conditions, an additional safety element is installed which can be actuated either automatically or from the outside.
REFERENCES:
patent: 4548298 (1985-10-01), Born
patent: 5339704 (1994-08-01), Lindberg
A. Rastetter und E. Schmalenbach "Absturzsicherung und Haltevorrichtung fur direkt-hydraulisch betriebene Aufzuge und andere Hebeeinrichtungen", Technische Uberwachung 22, pp. 20-22, Jan. 1981.
Noland Kenneth
Otto Nussbaum GmbH & Co. KG
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