George L Vojtech

US Patent:

20030061008, Mar 27, 2003

Filed:

Sep 6, 2002

Appl. No.:

10/236356

Inventors:

George Smith - Ellicott City MD, US
George Peacock - Columbia MD, US
George Vojtech - Centreville MD, US

International Classification:

G06F015/00

US Classification:

702/188000

Abstract:

Techniques for monitoring a machine for significant deviations from normal operations include collecting, at a first processing element, sensor data about the machine. The first processing element performs narrowband frequency domain processing to determine a segment of sensor data that indicates a deviation from normal operations that exceeds a threshold deviation. A message including the segment of sensor data is sent to a second processing element. In response to receiving the message, the second processing element performs different narrowband frequency domain processing to determine whether the deviation from normal operations is significant for maintaining the machine. If the deviation from normal operations is determined to be significant for maintaining the machine, then the deviation is reported to cause the machine to be maintained.

US Patent:

20040037167, Feb 26, 2004

Filed:

Mar 26, 2003

Appl. No.:

10/381528

Inventors:

Charles Anderson - Pasadena MD, US
Charles Kerechanin - Burtonsville MD, US
Daniel DeCicco - Pasadena MD, US
George Vojtech - Centreville MD, US

International Classification:

H04R001/00

US Classification:

367/154000

Abstract:

An expandable sensor array including at least one expandable member movable between an unexpanded stowed state and an expanded deployed state and a plurality of sensors interconnected with the at least one inflatable member and operatively connected to form a sensor array.

US Patent:

20040123665, Jul 1, 2004

Filed:

Mar 31, 2003

Appl. No.:

10/257712

Inventors:

David Blodgett - Ellicott City MD, US
George Vojtech - Centreville MD, US

International Classification:

G01H013/00
G01M007/02
G01H001/14
G01H009/00
G01H015/00

US Classification:

073/579000, 073/582000, 073/662000, 073/664000, 702/034000, 073/594000

Abstract:

A nondestructive method of and apparatus for detecting degradation of reinforcing members embedded within a structure is disclosed. Degradation can arise from many sources, such as corrosion, fracture, cracking, fatigue, chemical reaction, etc. The device includes an inducing instrument() to induce a vibration of the reinforcing members ()and a measuring device () to detect the vibration of the reinforcing members. The measurement is analyzed to detect the presence of reinforcing member degradation or reinforcing member-to-concrete bonding. The device may include a controller () to enhance the detection. The device may also include an amplifier () to further increase the energy in the waves imparted to the structure and the acoustic waves detected by the measuring instrument.()

US Patent:

20140061370, Mar 6, 2014

Filed:

Feb 17, 2012

Appl. No.:

13/393502

Inventors:

George L. Vojtech - Easton MD, US

International Classification:

B64B 1/06

US Classification:

244 30

Abstract:

According to another aspect of the present invention, an airship includes a plurality of connected segments and a controller that is adapted to dynamically control the movement of each of the plurality of segments relative to one another during flight of the airship.