초록 ▼

A system for placing a vacuum on a container for a cement or molding mixture includes a container for holding the cement which has an opening for adding or removing cement. A flexible polymer film cover is sized to cover at least the open portion of the container and has a vacuum hose coupling attac

A system for placing a vacuum on a container for a cement or molding mixture includes a container for holding the cement which has an opening for adding or removing cement. A flexible polymer film cover is sized to cover at least the open portion of the container and has a vacuum hose coupling attached thereto which connects to a vacuum hose connected to a vacuum pump for drawing a vacuum between the cover and the container. Attaching means, such as a clamping bracket, are provided for removably attaching the flexible polymer cover to the container. A vapor trap is attached in the vacuum line for capturing vapor removed by the vacuum applied to the container. A mold may have a hollow mold core member placed in the center of the mold which has a plurality of apertures therein and which has the uncured cement placed therearound for producing the vacuum in the center of the molded part during the curing of the concrete. The mold may have a vibrator clamp and a vibrator attached thereto for simultaneously vibrating the mold while producing a vacuum to remove gas bubbles from the cement.

대표청구항 ▼

[ I claim:] [1.] A vacuum system for placing a vacuum on a container for an uncured cement mixture comprising:a container for holding cement and having an open portion for adding and removing cement and having a hollow mold core member having a plurality of apertures therein;a flexible polymer cover

[ I claim:] [1.] A vacuum system for placing a vacuum on a container for an uncured cement mixture comprising:a container for holding cement and having an open portion for adding and removing cement and having a hollow mold core member having a plurality of apertures therein;a flexible polymer cover sized to at least cover said open portion of said container and having a vacuum hose coupling attached thereto;a vacuum pump for drawing a vacuum;a vacuum hose connected to said vacuum pump and to said flexible polymer cover vacuum hose coupling;attaching means for removably attaching said flexible polymer cover to said container; anda vapor trap for capturing vapor removed from said container by a vacuum applied to said container while covered with said flexible polymer cover; whereby a cement container can have a vacuum applied thereto for removing gases from uncured cement.