James R Carr

US Patent:

48455024, Jul 4, 1989

Filed:

Apr 7, 1988

Appl. No.:

7/178976

Inventors:

James L. Carr - Landover MD
Marvin S. Maxwell - Silver Spring MD

International Classification:

G01S 502

US Classification:

342430

Abstract:

A direction finding method and apparatus utilizes two receiving antennas which are disposed on a baseline that is rotated around its midpoint at a constant angular velocity. Signals received from a transmitter by the antennas are processed by circuitry that includes a balanced mixer. The balanced mixer multiplies the signals from the two antennas, which are time varying and of different phase due to their rotation and spacing. The output from the balanced mixer is a signal which includes a high frequency component, and a low frequency component. The high frequency component can be used to determine incoming signal amplitude and frequency. The low frequency component can be used to determine the azimuth and elevation angles of the transmitter relative to the plane of rotation of the receiver through analysis of the signal at a number of different times.

US Patent:

39662233, Jun 29, 1976

Filed:

Nov 8, 1974

Appl. No.:

5/522165

Inventors:

James P. Carr - Silver Spring MD

International Classification:

B60G 1146

US Classification:

280712

Abstract:

The invention can take the form of different suspension systems which provide essentially constant force (zero spring rate) individual wheel support of a vehicle during normal individual wheel travel. Zero spring rate is achieved by supplying essentially constant air pressure to air bag suspension elements. In one system regulation of suspension height and air pressure is achieved by open bottom air bags utilizing the ground effects principle. A second system utilizes closed air bags operating against opposing governing springs. Constant air pressure is supplied from a controlled reservoir. Auxiliary force mechanisms are provided for total system support during high vertical, longitudinal and angular vehicle accelerations.

US Patent:

42861683, Aug 25, 1981

Filed:

Jan 18, 1979

Appl. No.:

6/004337

Inventors:

James R. Carr - Silver Spring MD

Assignee:

Atomic Products Corp. - New York NY

International Classification:

G21K 300
G01D 1800
G09B 2328

US Classification:

250510

Abstract:

A phantom simulation imaging quality control device that effectively simulates one centimeter lesions, using steel ball bearings as gamma ray attenuators. The bearings are mounted in a synthetic resinous sheet in an orthogonal pattern. The phantom can provide uniformity, resolution, linearity, distortion and field size checks, all with a single exposure.

US Patent:

42404215, Dec 23, 1980

Filed:

Jun 26, 1979

Appl. No.:

6/052436

Inventors:

James R. Carr - Silver Spring MD

International Classification:

A61B 600

US Classification:

128215

Abstract:

A light weight syringe shield for use with syringes containing radioactive materials. The shield includes an outer shell of lead or similar gamma ray impervious material and a correspondingly configured inner shell of synthetic resinous materials. Both shells are of arcuate cross section, and extend through an arc substantially greater than 180 degrees so as to be selectively spread to enable the shield to be snapped laterally on the barrel of the syringe to be resiliently retained thereby. The shield is sufficiently long to cover that part of the barrel normally filled with the radioactive material, and it may be slid longitudinally of the barrel to permit calibration in an ion well chamber, as well as when the syringe is in use.

Address:

9 Mira Ct, Middle River, MD 21220

Phone:

4103356231

VIN:

JTMBK31V275030063

Make:

TOYOTA

Model:

RAV4

Year:

2007