Steven R Hale

US Patent:

46850740, Aug 4, 1987

Filed:

Nov 13, 1984

Appl. No.:

6/670647

Inventors:

Joe T. May - Leesburg VA
Steven D. Hale - Lovettsville VA

Assignee:

Electronic Instrumentation and Technology - Sterling VA

International Classification:

G01B 1128
G06G 1546

US Classification:

364564

Abstract:

An instrument for use with a film containing a printed circuit layout. The instrument measures the area which is transparent to electromagnetic radiation of a characteristic wavelength so that the open area of the film and the average open area can be calculated and displayed. A source oriented in a direction perpendicular to the transport path emits radiation of the characteristic wavelength across a width of the film. A plurality of detecting devices responsive to the characteristic wavelength are arranged in a linear array in optical coordination with the source. Each detecting device detects radiation transmitted through an incremental area of the film and produces an output signal representative thereof. A detector circuit connected to receive the output signals repeatedly and sequentially provides digital area signals proportional to the amount of clear area within a respective incremental area of film. A microcomputer receives the area signals and computes the total clear area.

US Patent:

42976995, Oct 27, 1981

Filed:

Oct 24, 1979

Appl. No.:

6/087811

Inventors:

James C. Fowler - Burke VA
Steven D. Hale - Vienna VA
Theodore E. Moser - Rockville MD

Assignee:

Ensco, Inc. - Springfield VA

International Classification:

G01S 1302

US Classification:

343 5NA

Abstract:

The present invention comprises a short-pulse radar guidance tool which determines borehole-to-roof and borehole-to-floor distances along a coal seam by measuring the travel times of electromagnetic pulses transmitted from the tool and reflected back to a receiving antenna in the tool from the interface at the roof or floor of the coal seam. The tool includes a high frequency electromagnetic pulser, a directional transmitting antenna, a directional receiving antenna, a battery power source, and control circuitry for performing all control and transmitting/receiving functions at the tool location. Placement of the transmitting antenna at a point intermediate the control circuitry and the receiving antenna acts to reduce indirect electromagnetic coupling between the antennas. Circuit isolators are used to further attenuate RF crosstalk occuring between the control circuitry and the receiving antenna.

US Patent:

D2862980, Oct 21, 1986

Filed:

Feb 3, 1984

Appl. No.:

6/576753

Inventors:

Joe T. May - Leesburg VA
Steven D. Hale - Lovettsville VA

Assignee:

Colight, Inc. - Minneapolis MN
Electronic Instrumentation & Technology - Sterling VA

US Classification:

D16 39

US Patent:

D2859319, Sep 30, 1986

Filed:

Feb 3, 1984

Appl. No.:

6/576748

Inventors:

Joe T. May - Leesburg VA
Steven D. Hale - Lovettsville VA

Assignee:

Colight, Inc. - Minneapolis MN
Electronic Instrumentation & Technology - Sterling VA

US Classification:

D16 39

US Patent:

44823282, Nov 13, 1984

Filed:

Feb 26, 1982

Appl. No.:

6/352917

Inventors:

Frank W. Ferguson - Arlington VA
John F. Shell - Landover MD
Steven D. Hale - Vienna VA

International Classification:

G09B 706

US Classification:

434310

Abstract:

An improved audio-visual apparatus for projecting visual information segments carried by a transparency holder in an audio-visual cartridge, and for reproducing corresponding narrative and control information recorded on a movable storage medium carried by the cartridge. The apparatus includes an optical projector for projecting a selected one of the visual information segments onto a screen and a first drive mechanism for supporting the holder and selectively driving it to align specified visual segments with the optical projector. A second drive mechanism supporting the storage medium and selectively moving it independently of the holder to permit reproduction of recorded information is provided, and a playback device is mounted in operative relationship with the storage medium to produce signals corresponding to the stored information. Control information reproduced from the storage medium is fed to a microprocessor which is responsive thereto selectively to operate the first and second drive mechanisms while narrative information is fed to a loudspeaker, whereby selected visual displays and accompanying corresponding audible narrative are produced in predetermined sequences. Manual control selectors is also provided to permit operator response to and modification of the audio-visual program.