Michael J Klassen

US Patent:

7015807, Mar 21, 2006

Filed:

Oct 2, 2003

Appl. No.:

10/676779

Inventors:

Richard J. Roby - Columbia MD, US
Michael S. Klassen - Columbia MD, US
Christopher F. Schemel - Laurel MD, US
Diwakar Vashishat - Germantown MD, US
Maclain M. Holton - Columbia MD, US
Kelly R. Flint - Greenbelt MD, US

Assignee:

Combustion Science & Engineering, Inc. - Columbia MD

International Classification:

G08B 1/00

US Classification:

340531, 340628, 340511, 381 56

Abstract:

A method for detecting smoke detector alarms comprises analyzing at least two parameters of ambient sound over a period of time to detect a temporal pattern of the alarm. In one embodiment, a series of samples are taken over a period of time sufficiently long to include at least one full period of a repeating sound pattern, and the two parameters are frequency and amplitude of the loudest sound in each sample. The algorithmic analysis may be triggered by a detection algorithm that utilizes a lower amount of power than the algorithmic analysis. In other embodiments, the detection apparatus is incorporated into a conventional smoke detector that will detect both smoke and an alarm from another detector. In another embodiment, a smoke detector includes a transceiver to transmit an activation signal to neighboring smoke detectors when a fire is detected and to receive an activation signal from neighboring detectors.

US Patent:

7089745, Aug 15, 2006

Filed:

Oct 10, 2003

Appl. No.:

10/682408

Inventors:

Richard J. Roby - Columbia MD, US
Michael S. Klassen - Columbia MD, US
Christopher F. Schemel - Laurel MD, US

Assignee:

LPP Combustion, LLC - Columbia MD

International Classification:

F02C 7/22
F02C 7/26

US Classification:

60776, 60737, 60 3952

Abstract:

A gas stream with a reduced oxygen concentration relative to ambient air is used to vaporize a liquid fuel or liquified higher hydrocarbon gas, or is mixed with a vaporized gas, and the reduced oxygen vaporized fuel gas is fed to a combustion device such as a premixed or diffusion combustor. Preferably, the oxygen content of the gas stream is less than the limiting oxygen index. By mixing the fuel with a gas stream that has an appropriately reduced oxygen content, auto-ignition prior to the flame front can be avoided. In some embodiments, the reduced oxygen stream is generated from an air separator or taken from the exhaust of the combustion device.

US Patent:

7170397, Jan 30, 2007

Filed:

Dec 5, 2005

Appl. No.:

11/293119

Inventors:

Richard J. Roby - Columbia MD, US
Michael S. Klassen - Columbia MD, US
Jacqueline DuBois - Ellicott City MD, US
Glenn Gaines - Fallston MD, US
Erin Ashley - Elkridge MD, US

Assignee:

Combustion Science & Engineering, Inc. - Columbia MD

International Classification:

H04B 3/36

US Classification:

3404071, 3403841, 340628

Abstract:

A system and method for waking a person includes the provision of tactile stimulation in a repeating interrupted pattern upon the detection of an alarm signal indicative of an event for which the person should be awakened. In one embodiment, a device for waking a person comprises a circuit for generating a driver signal in response to an alarm signal, the driver signal having a repeating interrupted pattern; an electrically controlled switching device having a control input, a power input and a power output, the power input being connectable to a power source, the control input being connected to receive the driver signal from the circuit; and a tactile stimulation device connected to the power output of the electrically controlled switching device, the tactile stimulation device being configured to produce a tactile stimulation.

US Patent:

D545229, Jun 26, 2007

Filed:

Jun 1, 2006

Appl. No.:

29/260756

Inventors:

Richard J. Roby - Columbia MD, US
Michael S. Klassen - Columbia MD, US
Leo Eskin - Darnestown MD, US
MacLain M. Holton - Columbia MD, US
Albert E. Straus - Timonium MD, US

Assignee:

Combustion Science & Engineering, Inc. - Columbia MD

International Classification:

1005

US Classification:

D10106

US Patent:

7322198, Jan 29, 2008

Filed:

Aug 14, 2006

Appl. No.:

11/464441

Inventors:

Richard J. Roby - Columbia MD, US
Michael S. Klassen - Columbia MD, US
Christopher F. Schemel - Laurel MD, US

Assignee:

LPP Combustion, LLC - Columbia MD

International Classification:

F02C 7/22
F02C 7/26

US Classification:

60776

Abstract:

A gas stream with a reduced oxygen concentration relative to ambient air is used to vaporize a liquid fuel or liquefied higher hydrocarbon gas, or is mixed with a vaporized gas, and the reduced oxygen vaporized fuel gas is fed to a combustion device such as a premixed or diffusion combustor. Preferably, the oxygen content of the gas stream is less than the limiting oxygen index. By mixing the fuel with a gas stream that has an appropriately reduced oxygen content, auto-ignition prior to the desired flame location in the combustor can be avoided. In some embodiments, the reduced oxygen stream is generated from an air separator or taken from the exhaust of the combustion device.

US Patent:

7770396, Aug 10, 2010

Filed:

Oct 30, 2007

Appl. No.:

11/929675

Inventors:

Richard J. Roby - Columbia MD, US
Michael S. Klassen - Columbia MD, US
Christopher F. Schemel - Laurel MD, US

Assignee:

LLP Combustion, LLC - Columbia MD

International Classification:

F02C 1/00

US Classification:

60737, 60776

Abstract:

A gas stream with a reduced oxygen concentration relative to ambient air is used to vaporize a liquid fuel or liquefied higher hydrocarbon gas, or is mixed with a vaporized gas, and the reduced oxygen vaporized fuel gas is fed to a combustion device such as a premixed or diffusion combustor. Preferably, the oxygen content of the gas stream is less than the limiting oxygen index. By mixing the fuel with a gas stream that has an appropriately reduced oxygen content, auto-ignition prior to the desired flame location in the combustor can be avoided. In some embodiments, the reduced oxygen stream is generated from an air separator or taken from the exhaust of the combustion device.

US Patent:

7770646, Aug 10, 2010

Filed:

Oct 8, 2007

Appl. No.:

11/868707

Inventors:

Michael Klassen - Columbia MD, US
Ponnuthurai Gokulakrishnan - Columbia MD, US
Casey Fuller - Columbia MD, US
Andrew Hamer - Columbia MD, US
Charles H. Ware - Palm Harbor FL, US
John E. Langdon - Fort Worth TX, US

Assignee:

World Energy Systems, Inc. - Fort Worth TX

International Classification:

E21B 36/00
E21B 43/24

US Classification:

166303, 166 59

Abstract:

A downhole burner for a steam generator includes an injector and a cooling liner. Steam enters the burner through holes in the cooling liner. Combustion occurring within the cooling liner heats the steam and increases its quality and may superheat it. The heated, high-quality steam and combustion products exit the burner and enter an oil-bearing formation to upgrade and improve the mobility of heavy crude oils held in the formation. The injector includes a face plate, a cover plate, an oxidizer distribution manifold plate, and a fuel distribution manifold plate. The cooling liner has an effusion cooling section and effusion cooling and jet mixing section. The effusion cooling section includes effusion holes for injecting steam along the cooling liner surface to protect the liner. The effusion cooling and jet mixing section has both effusion holes and mixing holes for injecting steam further toward central portions of the burner.

US Patent:

8225611, Jul 24, 2012

Filed:

Aug 5, 2010

Appl. No.:

12/851379

Inventors:

Richard J. Roby - Columbia MD, US
Michael S. Klassen - Columbia MD, US
Christopher F. Schemel - Laurel MD, US

Assignee:

LPP Combustion, LLC - Columbia MD

International Classification:

F02C 1/00
F02G 3/00

US Classification:

60737, 60752, 60776

Abstract:

A gas stream with a reduced oxygen concentration relative to ambient air is used to vaporize a liquid fuel or liquefied higher hydrocarbon gas, or is mixed with a vaporized gas, and the reduced oxygen vaporized fuel gas is fed to a combustion device such as a premixed or diffusion combustor. Preferably, the oxygen content of the gas stream is less than the limiting oxygen index. By mixing the fuel with a gas stream that has an appropriately reduced oxygen content, auto-ignition prior to the desired flame location in the combustor can be avoided. In some embodiments, the reduced oxygen stream is generated from an air separator or taken from the exhaust of the combustion device.