Thomas D Demarco

US Patent:

20050274094, Dec 15, 2005

Filed:

Aug 25, 2005

Appl. No.:

11/162024

Inventors:

Thomas DeMarco - McHenry IL, US

International Classification:

B01D046/00

US Classification:

055356000, 055337000

Abstract:

A specially arranged vacuum loader and industrial dust collector with a perforated plate tangential cyclone separator with angular perforations is provided to efficiently remove, readily collect, effectively separate and safely dispose of wet, dry and fibrous materials, including liquids and slurries. The special vacuum loader and industrial dust collector has a solids-gas separation compartment comprising a tangential cyclone separator, preferably a perforated plate tangential separator with angular perforations, which is positioned generally alongside and laterally offset from one or more filtering compartments to minimize turbulence and re-entrainment of the collected particulate material.

US Patent:

41742060, Nov 13, 1979

Filed:

Jan 26, 1978

Appl. No.:

5/872658

Inventors:

George T. Dupre - Palatine IL
Thomas M. DeMarco - Chicago IL

Assignee:

NFE International Ltd. - Palatine IL

International Classification:

B01D 4500

US Classification:

55434

Abstract:

An improved linear accelerator separator wherein much higher kinetic energy can be imparted to the particulate matter thereby significantly increasing the separation efficiency as compared to the prior art. In particular, the particles and airstream are rapidly accelerated and directed into an expansion chamber which is sufficiently long to permit the particles to expand or spread out and fall to the chamber bottom and to permit the airstream to lose velocity and to back up or turn around and exit from the chamber entrance.

US Patent:

40626644, Dec 13, 1977

Filed:

Mar 15, 1976

Appl. No.:

5/667120

Inventors:

George T. Dupre - Palatine IL
Thomas M. DeMarco - Chicago IL
Lawrence E. Borkowski - Elk Grove Village IL
Harvey Waliczek - Palatine IL

Assignee:

NFE International, Ltd. - Arlington Heights IL

International Classification:

B01D 5000

US Classification:

55319

Abstract:

An improved multistage particle separator apparatus including a cyclone separator, a linear separator, a pair of vertical channels carrying exit airstreams from said linear separator, and a pair of air filter chambers on each side of said linear separator. A portable multistage separator including integral means for collecting the separated particulate material and for supporting the separator during movement.

US Patent:

41745914, Nov 20, 1979

Filed:

Apr 20, 1978

Appl. No.:

5/898203

Inventors:

George T. Dupre - Palatine IL
Thomas M. DeMarco - Chicago IL

Assignee:

NFE International Ltd. - Palatine IL

International Classification:

B24B 3100

US Classification:

51 16

Abstract:

Apparatus for removing fins or flash from foundry sand cores, including a conveyor transporting the sand cores, means mounted above the conveyor for delivering a falling curtain of core cleaning material, such as metal shot or metal grit particles, from a reservoir onto the cores for removing the fins, means for separating the core cleaning material from loosened sand, and means for loading the reservoir with separated core cleaning material so the shot or grit can be reused. A single vacuum source and interconnecting conduits provide means for: (1) separating the shot/grit core cleaning material from loosened sand; (2) loading the reservoir with the separated shot/grit; and (3) transferring the separated loosened sand for use as needed.