Thomas Carroll Glenn

US Patent:

56296266, May 13, 1997

Filed:

Jul 12, 1994

Appl. No.:

8/273600

Inventors:

Richard J. Russell - Chelmsford MA
Alan L. Crandall - Lunenburg MA
Robert M. Siegel - West Newton MA
John E. Foley - Lowell MA
Thomas A. Glenn - Reading MA
Thomas J. Gorman - Middletown RI

Assignee:

Geo-Centers, Inc. - Newton Centre MA

International Classification:

G01V 308
G01V 300

US Classification:

324345

Abstract:

Apparatus and method for collecting magnetometer data at the earth's surface in order to detect anomalies in the earth's magnetic field caused by buried ferromagnetic objects. A plurality of magnetometers are provided in a predetermined array on a mobile platform. A fixed station is also provided on the earth's surface, and navigational data from a global positioning system (GPS) is collected on the locations of the fixed station and mobile platform in synchronization with a sync signal received from the GPS. While the mobile platform traverses an area on the earth's surface, magnetometer data is collected in synchronization with the sync signal. The apparatus and method provide a significant improvement in the amount of area which can be surveyed in a given time period and in the precision of the location and magnetic field intensity data collected.

US Patent:

40742725, Feb 14, 1978

Filed:

Feb 9, 1976

Appl. No.:

4/656463

Inventors:

Allan S. Way - Irvine CA
Thomas J. Glenn - Irvine CA
Howard J. Sloane - Fullerton CA
Gerald T. Keahl - Newport Beach CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G01D 526
G01D 938

US Classification:

346 33A

Abstract:

A variable chart format system for a recorder with a chart print out, the system having a manually selectable switch for simultaneously controlling the abscissa and ordinate formatting independent of scale expansion circuitry normally associated with the abscissa and ordinate. The abscissa formatting is digital and operable in response to a programmable or variable clock, the output of which is selectively passed through a first set of abscissa formatting frequency dividers and then serially through one of a second set of abscissa scale expansion frequency dividers to drive a chart drive stepper motor. The ordinate formatting is analog and includes ordinate scale expansion circuitry in series with the servomotor and ordinate formatting selectable compensating resistors in series with the recording pen potentiometer or slidewire, the selectable compensating resistors being selected simultaneously with the abscissa formatting dividers to thereby preselect a chart format by a single control without affecting the abscissa or ordinate expansion circuitry.

US Patent:

41554906, May 22, 1979

Filed:

Jul 5, 1977

Appl. No.:

5/812975

Inventors:

Thomas J. Glenn - Irvine CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

B01L 302
B01L 900

US Classification:

222327

Abstract:

A fluid dispenser including a syringe having a reciprocating syringe plunger for controlling syringe fluid intake and discharge and a traveling slide connected to the plunger for driving the plunger. The traveling slide is bearing mounted in sliding relationship on a fixed shaft and is driven therealong by a pinion gear engaging a rack secured to the slide.

US Patent:

44377622, Mar 20, 1984

Filed:

Dec 28, 1981

Appl. No.:

6/334806

Inventors:

Thomas J. Glenn - Irvine CA
Wilbur I. Kaye - Corona del Mar CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

G01J 300
H01J 4000

US Classification:

356326

Abstract:

Gain hysteresis exhibited by the photomultiplier detector of a single beam spectrophotometer is reduced by illuminating the detector and applying dynode voltage thereto during the normal "off" or "idle" interval of the spectrophotometer.