David W Sickenberger

US Patent:

6967338, Nov 22, 2005

Filed:

Nov 24, 2003

Appl. No.:

10/720877

Inventors:

David W. Sickenberger - Bel Air MD, US
Richard D. Sickenberger - Daytona Beach FL, US

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G01N024/61

US Classification:

2504611

Abstract:

The invention provides particle detectors and detection methods. A particle detector includes a spherical/ellipsoid shell comprising spherical and ellipsoid mirrors that define a focal point within an interior of the shell, a pair of opposing tubes passing through the spherical/ellipsoid shell and directed at the focal point for directing particles to the focal point, and a light source directed at the focal point for directing light at the particles to generate fluorescence from the particles at or near the focal point.

US Patent:

7277829, Oct 2, 2007

Filed:

Nov 3, 2005

Appl. No.:

11/268417

Inventors:

David W. Sickenberger - Bel Air MD, US
Jerry B. Cabalo - Towson MD, US
Richard Sickenberger - Bel Air MD, US

Assignee:

United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G06F 15/00

US Classification:

702189, 702 22, 702 32, 422 50, 422 52, 422 55

Abstract:

A method for generating a synthetic data signal is described. A synthetic data signal having any desired duration is generated from a data signal and a background signal of shorter duration. The duration of the background signal is extended by sampling the background signal at random times and for random durations. The sampled background signal is used to extend the background signal. Event data is identified from the data signal. The extended background signal is randomly populated with event data randomly sampled from the data signal to generate the synthetic data signal.

US Patent:

7375348, May 20, 2008

Filed:

Nov 3, 2005

Appl. No.:

11/268758

Inventors:

David W. Sickenberger - Bel Air MD, US
Jerry B. Cabalo - Towson MD, US
Richard Sickenberger - Bel Air MD, US

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G01N 21/64
G01N 15/10
G01N 15/14

US Classification:

2504612, 250575, 250573, 356336, 356338, 359361, 324464

Abstract:

A biological aerosol detector is provided. The biological aerosol detector uses a semiconductor optical source with an ultraviolet emission band to excite biological molecules in an aerosol sample. Filtering optics are configured to attenuate radiation from a secondary emission band of the optical source to prevent false signals due to scattering of secondary emission band radiation from non-biological molecules. An intake/exhaust manifold that includes an intake pipe that fits within a concentric exhaust pipe is also provided. The intake/exhaust manifold planarizes the flow of the sampled aerosol to maximize the time of irradiation. An electrostatic sampling grid is also provided to selectively draw biological molecules having a net charge into the optical chamber.

US Patent:

7852469, Dec 14, 2010

Filed:

Oct 4, 2007

Appl. No.:

11/867190

Inventors:

David W. Sickenberger - Bel Air MD, US
Virginia E. Foot - Salisbury, GB
Dean Payne - Salisbury, GB

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G02B 27/32

US Classification:

356256, 356432, 356439, 2504611, 2504921, 250288

Abstract:

A particle detection device and method wherein a bulk sample of particles is selectively collected based on scattering properties of the particles and fluorescence properties of the particles. The bulk sample of particles is then excited to produce an atomic emission from the bulk sample of particles. The atomic emission from the bulk sample of particles is used to determine atomic emission properties of the particles and identify biological particles in the bulk sample.

US Patent:

H4545, Apr 5, 1988

Filed:

Nov 17, 1986

Appl. No.:

6/934289

Inventors:

David W. Sickenberger - Baltimore MD
Richard P. Marcou - Bel Air MD

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

G01N 3100

US Classification:

73 27R

Abstract:

A method of detecting leaks within artillery shells, bombs and other munitions is disclosed which involves the permanent in situ insertion within the munition cavity of an electrically resistive surface which varies in resistance with the adsorption thereon of leaking chemical vapors. In a typical embodiment of the invention, the electrically resistive surface is serially connected with an identical surface with an inert coating and the voltage drops across both the coated and uncoated surfaces are measured. Thereby, any changes in the resistance of the exposed surface due to factors other than adsorption thereon of leaking gases, e. g. , temperature changes, are appropriately offset.

US Patent:

55170269, May 14, 1996

Filed:

Jan 20, 1995

Appl. No.:

8/376169

Inventors:

David Sickenberger - Bel Air MD
Emory Sarver - Havre de Grace MD

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

H01J 4500

US Classification:

250288

Abstract:

An on-the-move surface sampling head utilizes a silicone membrane with an internal neater in conjunction with a mass spectrometer analyzer and a modified transfer line having a quick-connect electrical-pneumatic connector to detect chemical contaminated areas.

US Patent:

43907849, Jun 28, 1983

Filed:

Jan 29, 1981

Appl. No.:

6/229480

Inventors:

David R. Browning - Reisterstown MD
Gordon R. Sima - Joppa MD
John C. Schmidt - Baltimore MD
David W. Sickenberger - Baltimore MD

Assignee:

The Bendix Corporation - Southfield MI

International Classification:

H01J 4940

US Classification:

250287

Abstract:

The ion accelerator for an ion mobility detector cell is comprised of a ceramic tube coated inside with a thick film resistor composition across which a voltage potential difference is impressed to provide an ion accelerating electrical field gradient within the tube.