James Edward Fowler

US Patent:

45234639, Jun 18, 1985

Filed:

Aug 12, 1983

Appl. No.:

6/522819

Inventors:

George H. Fathauer - Mesa AZ
James M. Fowler - Houston TX
Edward J. Rylicki - Powell OH
Edwin E. Mason - Rockbridge OH

Assignee:

Masco Corporation of Indiana - Taylor MI

International Classification:

G01F 168

US Classification:

73204

Abstract:

Air filtering apparatus includes a filter cell having ionizing and collecting structure, a high voltage power supply and control unit for supplying a high voltage to the filter cell, a separate low voltage power supply unit for supplying operating power to the high voltage power supply unit and a separate probe unit for monitoring the flow of air within a duct in which the filter cell is installed. The high voltage power supply and control unit includes an output transistor in series with a primary winding of a step-up transformer and controlled by an oscillator circuit which is operative to control and limit the output voltage and current and also the current through the output transistor. The probe unit includes a pair of thermistors and a bridge circuit and operates to provide a signal which is independent of variables other than air flow velocity. A modified apparatus is also disclosed, arranged for portable use and arranged for energization from a standard power line with no separate low voltage supply.

US Patent:

44109342, Oct 18, 1983

Filed:

Jul 22, 1981

Appl. No.:

6/285417

Inventors:

George H. Fathauer - Mesa AZ
James M. Fowler - Houston TX
Edward J. Rylicki - Powell OH
Edwin E. Mason - Rockbridge OH

Assignee:

Masco Corporation - Taylor MI

International Classification:

H02M 3335
B03C 368

US Classification:

363 21

Abstract:

Air filtering apparatus includes a filter cell having ionizing and collecting structure, a high voltage power supply and control unit for supplying a high voltage to the filter cell, a separate low voltage power supply unit for supplying operating power to the high voltage power supply unit and a separate probe unit for monitoring the flow of air within a duct in which the filter cell is installed. The high voltage power supply and control unit includes an output transistor in series with a primary winding of a step-up transformer and controlled by an oscillator circuit which is operative to control and limit the output voltage and current and also the current through the output transistor. The probe unit includes a pair of thermistors and a bridge circuit and operates to provide a signal which is independent of variables other than air flow velocity. A modified apparatus is also disclosed, arranged for portable use and arranged for energization from a standard power line with no separate low voltage supply.

US Patent:

45071314, Mar 26, 1985

Filed:

Aug 12, 1983

Appl. No.:

6/522861

Inventors:

George H. Fathauer - Mesa AZ
James M. Fowler - Houston TX
Edward J. Rylicki - Powell OH
Edwin E. Mason - Rockbridge OH

Assignee:

Masco Corporation of Indiana - Taylor MI

International Classification:

B03C 332
B03C 368

US Classification:

55104

Abstract:

Air filtering apparatus includes a filter cell having ionizing and collecting structure, a high voltage power supply and control unit for supplying a high voltage to the filter cell, a separate low voltage power supply unit for supplying operating power to the high voltage power supply unit and a separate probe unit for monitoring the flow of air within a duct in which the filter cell is installed. The high voltage power supply and control unit includes an output transistor in series with a primary winding of a step-up transformer and controlled by an oscillator circuit which is operative to control and limit the output voltage and current and also the current through the output transistor. The probe unit includes a pair of thermistors and a bridge circuit and operates to provide a signal which is independent of variables other than air flow velocity. A modified apparatus is also disclosed, arranged for portable use and arranged for energization from a standard power line with no separate low voltage supply.

US Patent:

D2699966, Aug 2, 1983

Filed:

Jul 23, 1981

Appl. No.:

6/285970

Inventors:

Todd T. Smith - Phoenix AZ
James M. Fowler - Houston TX

Assignee:

Masco Corporation - Taylor MI

International Classification:

D2304

US Classification:

D23149