Device to aid the unloading of support elements

Details Device to aid the unloading of support elements Device to aid the unloading of support elements

2005-09-01

2010-06-29

Wujciak, III, A. Joseph (Department: 3632)

Supports

Props and braces

Adjustable length

C248S354300, C248S351000, C052S149000, C403S109500

Reexamination Certificate

active

07744054

ABSTRACT:
A device to aid the unloading of support elements, the support elements comprising a lower shaft and an upper shaft telescopically coupled to each other. The device includes annular first and second bodies coaxially couplable with each other. Each annular body is provided with a through-hole that allow the upper shaft to extend through the through holes. The upper shaft is also supported by the first annular body using a transversely extending member. The second annular body rests on the lower shaft. An intermediate unloading wedge is positioned between the first and the second annular bodies coupled together, and is able to slide transversally with respect thereto. The sliding of the unloading wedge causes the first annular body and the second annular body to come together or move apart in the longitudinal direction and, therefore, reduce or increase, respectively, the total length of the support element.

REFERENCES:
patent: 631 013 (1936-06-01), None
patent: 649 481 (1937-08-01), None
patent: 1 089 158 (1955-03-01), None

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