Back to results
US 4,266,581 AGranted
Vacuum treatment unit
AssigneeTremix AB
InventorHarald S. Wenander
Life of this patent
Estimating the term…
Abstract
A vacuum treatment unit for removing excess water from newly poured concrete. The unit comprises a vacuum pump connectable to at least two suction mats or the like via separate suction pipes. So that the pump will always obtain sufficient cooling, the suction pipes are readily disconnectably connected to the suction mats and said pipes are connected at their other ends to the vacuum pump via a settable valve device so constructed that at least one of the pipes is always connected to the suction side of the pump.
Claims6
A vacuum treatment unit for removing excess water from newly poured concrete, comprising;
- a vacuum pump connectable to at least two suction mats or the like via separate suction pipes, said suction pipes being readily disconnectably connected to the suction mats, said pies being connected to the vacuum pump via a selectively settable valve means, said valve means being constructed such that at least one pipe is always in communication with the suction side of the pump.
Dependencies are inferred from the claim text.