Drive screw system with nested mobile supports

Material or article handling – Load-transporting type vehicle and external means... – Means serves to align wheeled vehicle and load receiving or...

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74 8915, 188 32, 254 98, 384 53, 410 30, 414584, B60T 300, B65G 6702, F16H 2520

Patent

active

055315577

ABSTRACT:
The drive screw system comprises a drive screw and a drive nut adapted for driving a cooperating member such as a vehicle restraining device between the proximal and distal ends of the drive screw. At least one bearing assembly is mounted to a track for supporting the drive screw and automatically moving between the proximal and distal ends of the drive screw in response to the drive nut to automatically maintain a predetermined maximum unsupported length of the drive screw. Each bearing assembly comprises two bearing supports connected at a fixed length and which are coaxially disposed relative to each other. In one embodiment, the length of each bearing assembly are integral multiples of the smallest fixed connecting length and the drive screw has stationary bearing supports disposed at the proximal and distal ends wherein the distance between the stationary supports is (n+1)*L where n is the number of bearing assemblies and L is the length of the shortest bearing assembly.

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Actionjac Metric--Power Cylinders T-Series--Multi--Series--Nook Industries, The Linear Motion People.
Ad for Amacoil/Uhing Linear Drive System.
Ad for NSK Corporation in IMTS94.

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