Supports – Props and braces – Adjustable length
Patent
1994-09-07
1996-02-20
Foss, J. Franklin
Supports
Props and braces
Adjustable length
254 93HP, 280 612, A47F 500
Patent
active
054923000
ABSTRACT:
A leveling apparatus comprising a frame assembly including a top frame structure and a bottom frame structure, the top and bottom frame structures interconnected by an extensible wall structure; an inflatable bladder assembly, the bladder assembly being substantially enclosed by the top and bottom frame structures and the extensible wall structure, whereby the top frame structure is raised and lowered upon inflation and deflation, respectively, of the bladder assembly; locking means for retaining the frame assembly in a raised, extended position upon deflation of the bladder assembly; and fluid inlet and outlet means in fluid communication with the bladder assembly for inflating and deflating the bladder assembly.
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Dokken Sheila K.
Riihiluoma Clayton W.
D & R Ventures, Inc.
Foss J. Franklin
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