James R Kirkland

US Patent:

39837505, Oct 5, 1976

Filed:

Sep 29, 1975

Appl. No.:

5/617609

Inventors:

James L. Kirkland - Panama City FL

Assignee:

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

International Classification:

G01F 2328

US Classification:

73170A

Abstract:

A water wave height and fluid level measuring system is disclosed as having buoyant support mast which floats partially above water and partially below water in a substantially vertical disposition. A radio frequency transmitter is mounted on said mast above said water, and a plurality of radio frequency receivers are mounted on said mast at spatially disposed positions along said mast and submerged within said water. Telemetering, receiving data processing, and readout means are effectively connected to said receivers for communicating the output signals therefrom to predetermined remote or other locations, with said output signals being analog signals which represent water wave height or other fluid level at any given instant.

US Patent:

49707027, Nov 13, 1990

Filed:

Dec 5, 1968

Appl. No.:

4/783455

Inventors:

James L. Kirkland - Panama City FL

Assignee:

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

International Classification:

F42B 2242

US Classification:

367131

Abstract:

A sweep device for river mines of the command type is described. The device mploys two spaced, parallel blades which support the sweep device on the bottom of the river as it is towed therealong. The blades constitute laminated cutting elements which provide a signal of the presence of a command wire as it is severed on contact, as well as serve as electrodes for supplying an electric signal to sweep the mine. An electrical circuit is also described to process the signals from the blades, so as to distinguish between small metallic debris and metallic bodies bridging the two blades.

US Patent:

49707019, Nov 13, 1990

Filed:

Mar 22, 1971

Appl. No.:

5/126938

Inventors:

James L. Kirkland - Panama City FL

Assignee:

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

International Classification:

F42B 2242

US Classification:

367131

Abstract:

Disclosed is a system for locating a wire that is partially submerged wit water and partially extends out thereof which includes a transmitter for broadcasting radio frequency electromagnetic signals, a phase gradiometer for receiving said radio frequency electromagnetic signals after they have been received by that portion of said wire that extends out of said water and re-radiated by that portion of said wire that is submerged therein and for timely producing a pair of output signals in response thereto, a pair of constant output amplifiers for processing said pair of gradiometer output signals to identical useful levels, a phase comparator for determining the phase relationship between said pair of processed output signals, and a readout for indicating said phase relationship. The aforesaid phase gradiometer may be housed in a probe-type of mobile underwater vehicle which is towed by a tractor vehicle in such manner as to cause said phase gradiometer to traverse an underwater course in search of said wire.

US Patent:

39342883, Jan 27, 1976

Filed:

Nov 18, 1974

Appl. No.:

5/524722

Inventors:

James L. Kirkland - Panama City FL

Assignee:

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

International Classification:

B63B 5102

US Classification:

9 8R

Abstract:

A system for timely holding and releasing an object to be deployed in a petermined environmental medium is disclosed as incorporating a platform, a rotatable drum, and supports for said rotatable drum effectively mounted on said platform. A curved arm is attached to said drum at one extremity thereof, and a latch mechanism is releasably connected to the other extremity thereof. A rope extends around said curved arm, from which the object to be deployed is suspended within a shute, barrel, or slide, the latter of which may or may not be a part of the aforesaid platform.

US Patent:

50073460, Apr 16, 1991

Filed:

Oct 11, 1967

Appl. No.:

4/675277

Inventors:

James L. Kirkland - Panama City FL

Assignee:

United States of America as Represented by the Secretary of the Navy - Washington DC

International Classification:

B63G 900
F42B 2242

US Classification:

102402

Abstract:

A device for detecting and/or sweeping electrically controlled mines, which evice will provide an indication of the presence of a control cable connected to the mine, and will serve as a countermeasure for such mines, by selectively detonating same after cutting of its control line after the sweeping vessel is beyond the mine's effective range. The circuitry of the device includes a high D. C. voltage source connected with a capacitor so as to charge the capacitor through a protective current limiting resistor, whereby the voltage is caused to discharge through the control cable so as to indicate the presence of the mine. An insulated blade type grapple knife system, to prevent inadvertent shorting of the detonating circuit, is used in conjunction with a sensitivity adjustable magnetometer and a switch to provide the desired safety range to permit the cutter to sever the mine's control cable without endangering the tow vessel or its personnel.

US Patent:

41076079, Aug 15, 1978

Filed:

Sep 26, 1977

Appl. No.:

5/836829

Inventors:

James L. Kirkland - Panama City FL

Assignee:

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

International Classification:

G01R 3302

US Classification:

324253

Abstract:

A magnetometer wherein inductance of a resonant circuit is made sensitive changes in magnetic field to vary an oscillator operating frequency. The magnetometer utilizes a ferromagnetic sensor element that is characterized by high permeability in weak magnetic fields when the element is maintained at predetermined elevated temperatures near the Curie point of the element material and also exhibits a hysteresis curve having a steep slope in the region of field strengths on the order of the earth's magnetic field. The preferred embodiment includes resistive heating of the element and use of substantially pure iron as the element material.

US Patent:

44921110, Jan 8, 1985

Filed:

Oct 7, 1981

Appl. No.:

6/309403

Inventors:

James L. Kirkland - Panama City FL

International Classification:

G01N 300

US Classification:

73 84

Abstract:

A free falling or projectable penetrometer for simultaneously determining a multiplicity of ground characteristics during penetration and retracking cycles and while at rest following full penetration. The apparatus employs a multitude of sensing elements and is further characterized by the presence of at least three electrode pairs one aligned with the central axis of the penetrometer with the other two pairs being positioned orthogonally in a common plane that is itself perpendicular to the central axis. An onboard power supply is included together with telemetry equipment to generate ground characteristics and transmit such signals.

US Patent:

50198220, May 28, 1991

Filed:

Jul 9, 1973

Appl. No.:

5/379513

Inventors:

James L. Kirkland - Panama City FL

Assignee:

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

International Classification:

G01S 1300
H04B 1302
G01V 308

US Classification:

342 22

Abstract:

A system is disclosed for detecting and locating the occurrence of anomal to radio frequency electromagnetic transmission in conductive liquids. Applications are described for use in swimmer detection and for process monitoring.