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Class 248/335 - With clutch in tubes


Subclass of Class 248 - Supports
Definition: Devices in which the tubes are held in adjusted position
No. of patents: 2
Last issue date: 08/31/1993


NumberTitleIssue Date
5240218Retractable support assembly
A vertically retractable support assembly comprising a plurality of telescoping sets of three or more laterally spaced vertical guide rods, the rods of each set being laterally tied at their lowermost ends to impart lateral stability to the rods thereof. ...
08/31/1993
4445660Adjustable suspension support
An adjustable suspension support having a suspensible vertical cylinder, a coaxial shaft in the cylinder, a brake device on the upper end of the shaft, a grip device carried by the lower end of the shaft with an associated lever, a spacer tube between the...
05/01/1984
 
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