Concrete-distribution rig
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United States of America Patent
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Jul 16, 1996
Grant Date -
N/A
app pub date -
Nov 14, 1994
filing date -
Oct 2, 1992
priority date (Note) -
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Abstract
The invention concerns a five-arm concrete-distribution rig (20) mounted on a vehicle. Arms (1, 2 and 3) can be folded together by pivoting in opposite directions about hinged joints (B and C), which are capable of pivoting through approximately 180.degree., to form a 'Z'. In order to make it possible to supply concrete through several hoses in parallel, to upper stories and over obstacles, the invention proposes that arms (3, 4 and 5) can be folded together by pivoting in the same direction about joints (D and E), which are capable of pivoting through approximately 270.degree., to bring them up against arms (2 and 3) in the vicinity of hinged joint (C).
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