초록 ▼

A vacuum consisting of a canister housing that is open across its top end and is arranged to be covered by a removable lid, which lid mounts a vacuum source. The canister housing includes a hose port for connection to a hose that mounts a nozzle on the end thereof, which hose and nozzle are preferab

A vacuum consisting of a canister housing that is open across its top end and is arranged to be covered by a removable lid, which lid mounts a vacuum source. The canister housing includes a hose port for connection to a hose that mounts a nozzle on the end thereof, which hose and nozzle are preferable formed of a fireproof or flame retardant materials that will not be damaged by a passage of warm, hot and even burning coals therethrough. Which canister housing can be mounted on wheels, casters, or the like. A double filter system of the present invention is arranged within the canister housing, attached to the lid undersurface, to extend across the vacuum source inlet, which filter system consists of an inner or secondary filter for closely fitting across the vacuum source inlet, and is primarily a dust filter, with an outer or primary filter mounted to the lid, over the inner or secondary filter, with an open box frame arranged therebetween. Which open box frame includes a rod extending therefrom and out from the lid that is for shaking by an operator for dislodging by contact with collected materials off from the inner or secondary filter surface and from the outer or primary filter, which outer or primary filter is formed as a bag, preferably from a resistant or retardant proof material.

대표청구항 ▼

A vacuum comprising, a housing having a closed bottom and open top ends; a lid for fitting, in sealed engagement over said housing open top end, said lid having an undersurface facing the housing, a vacuum source inlet opening therefrom, and latch means for securing, in sealing engagement, said lid

A vacuum comprising, a housing having a closed bottom and open top ends; a lid for fitting, in sealed engagement over said housing open top end, said lid having an undersurface facing the housing, a vacuum source inlet opening therefrom, and latch means for securing, in sealing engagement, said lid onto said housing top end; a vacuum inlet tube secured into said housing for mounting a vacuum hose thereto, said vacuum hose having two ends and mounting a nozzle onto one end with the other vacuum hose end mounted to said vacuum inlet tube; a filter system and means for mounting same to said lid undersurface across said vacuum source inlet, said system consisting of a first primary filter that is a bag formed of a flame resistant material, a neck of said bag mounting to said lid undersurface and surrounding therein an inner secondary filter of bag form, a neck of said inner secondary filter mounting around said vacuum source inlet; an open box frame that is formed from rod section joined at their ends at right angles into a rectangular shape with opposite parallel rectangular ends with rod sections extending therebetween for arrangement between said primary filter and said inner secondary filter; a straight rod having two ends, one of said ends connected at a right angle to one of said open box frame ends providing a cantilever mounting of said open box frame to said straight rod, and said straight rod extends through an opening in said lid for manually lifting, rocking and pivoting said open box frame; and means for sealing said rod opening through said lid.