B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
25/57
B28B 1/08 (2006.01)
Patent
CA 1157238
ABSTRACT A concrete vibrator machine wherein the vibrators thereof are mounted on individual supporting structures that are adjustable longitudinally of the main frame of the machine, and wherein the vibrators are raised and lowered on their individual supporting structures in such a manner that if the vibrators strike an obstruction during lowering thereof, lowering of the vibrators may stop with- out damaging stress being placed thereon.
366591
Conway Robert T.
Glesmann Herbert C.
Kruse Richard W.
Rowe Murray A.
Cmi Corporation
Osler Hoskin & Harcourt Llp
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