Thomas J Jennings

US Patent:

7030631, Apr 18, 2006

Filed:

Dec 10, 2004

Appl. No.:

10/905019

Inventors:

Thomas A. Jennings - Bala Cynwyd PA, US

International Classification:

G01R 27/26

US Classification:

324689, 324665

Abstract:

A method and apparatus for monitoring and determining the moisture content of a sample substance inside a closed container. The apparatus includes a parallel capacitance circuit formed by a source of AC voltage supplied to a reference container and a sample container. The method does not require penetration or opening of the sealed sample container nor the destruction of the sample, and can be used to rapidly determine moisture content under normal storage conditions or at elevated or lower temperatures that may be used in a drying process.

US Patent:

7205779, Apr 17, 2007

Filed:

Jan 25, 2005

Appl. No.:

10/905875

Inventors:

Thomas A. Jennings - Bala Cynwyd PA, US

International Classification:

G01R 27/26

US Classification:

324664, 324689

Abstract:

An apparatus and method for determining and monitoring the moisture content of an elastomer material used as a closure or stopper for containers holding lyophilized pharmaceutical products, comprising a parallel capacitance circuit formed by supplying a source of AC voltage to a reference elastomer closure and a sample elastomer closure. The capacitance of the sample elastomer closure is measured and compared with the capacitance of the reference elastomer closure. The difference in capacitances of the sample elastomer closure and the reference elastomer closure allow the absorbed moisture content of the sample closure to be determined or monitored. The method does not require destruction of the sample elastomer closure, and can be used to rapidly determine moisture content under normal storage conditions or at elevated or lower temperatures.

US Patent:

53152891, May 24, 1994

Filed:

Feb 12, 1992

Appl. No.:

7/834445

Inventors:

Terry A. Fuller - Rydal PA
Thomas Jennings - Coloma MI

International Classification:

G08B 2300

US Classification:

340532

Abstract:

One or more sensors located on or surrounding a dangerous condition anticipate when an individual is approaching a hazard zone associated with the dangerous condition and then arms an alarm and activates an interactive protective system which protects an individual from exposure to the dangerous condition. The interactive system comprises a protective garment adapted to be worn by the individual. The protective garment includes a sensor for sensing when the protective garment is being worn and a signalling device responsive to the sensor for generating a signal indicating when the protective garment is being worn. A detector and control device responsive to the signal from the signalling device triggers an alarm sensible to the individual when it is activated by the motion sensor and does not sense the signal from the signalling device.

US Patent:

50164686, May 21, 1991

Filed:

Apr 5, 1989

Appl. No.:

7/333761

Inventors:

Thomas A. Jennings - Bala Cynwyd PA

Assignee:

T. A. Jennings Associates, Inc. - Bala Cynwyd PA

International Classification:

G01N 716
G01N 2556

US Classification:

73 73

Abstract:

A method and apparatus for determining the moisture in materials is provided. The apparatus allows the accurate determination of moisture in a sample as small as 1 mg with a sensitivity of less than 1 microgram of moisture. The apparatus includes a vacuum chamber which can be cooled to below -150. degree. C. or heated to about 100. degree. C. The vacuum chamber is connected in series with a moisture trap which can be cooled to below -150. degree. C. The moisture trap is connected in series with a combination of mechanical and diffusion vacuum pumps capable of reducing the pressure in the apparatus to below 1. times. 10. sup. -5 Torr. A sample is placed in the vacuum chamber, cooled to below -150. degree. C. , the apparatus is evacuated to a pressure of below 1. times. 10. sup. -5 Torr by the vacuum pumps.

US Patent:

43421431, Aug 3, 1982

Filed:

May 1, 1978

Appl. No.:

5/901994

Inventors:

Thomas A. Jennings - Glenside PA

International Classification:

H01G 430
H01F 4104

US Classification:

29 2542

Abstract:

Integrated structures of various combinations of inductors, capacitors and resistors are formed by bonded laminations of films of electrical conductors of desired configurations and electrical properties separated by films of dielectric material. Electrical terminals extending from appropriate ones of the conductors may be interconnected selectively to provide various single, series and parallel circuit component arrangements.

US Patent:

52806782, Jan 25, 1994

Filed:

Dec 9, 1992

Appl. No.:

7/988227

Inventors:

Thomas A. Jennings - Bala Cynwyd PA

International Classification:

F26B 300

US Classification:

34 30

Abstract:

A method and apparatus are provided for determining a process parameter of a material in a processing system having two containers. The material being monitored is disposed in one container and a single thermal energy control device is applied to both containers. The heat flux of each container is determined while the single thermal control device is applied to both containers. The process parameter is determined in accordance with the determined heat flux. The thermal energy control device may be a single heating surface for warming the two containers, or a cooling device such as a refrigerator. The process parameter may be the drying rate of the material and the drying rate can be determined during the processing of the material. The drying rate and the percent of drying can be displayed and the thermal energy level of the containers can be controlled according to the determined drying rate. A calibration procedure for calibrating the apparatus is also provided.

US Patent:

43275737, May 4, 1982

Filed:

Feb 29, 1980

Appl. No.:

6/125790

Inventors:

Thomas A. Jennings - Bala Cynwyd PA

Assignee:

T. A. Jennings Associates, Inc. - Bala Cynwyd PA

International Classification:

G01N 2504
G01N 2714

US Classification:

374 10

Abstract:

A method and apparatus for determining the low temperature characteristics of materials measures the resistivity of a sample material and the resistivity of a comparision material and plots the ratio of the resistivity of the comparision material to the resistivity of the sample material versus the temperature of the sample material. In addition, the method and apparatus measures the temperature of the sample and the temperature of a reference material and plots the difference there between as a function of the temperature of the reference material. The method and apparatus is usable in monitoring and/or controlling lyophilization appartus in order to increase the efficiency of the freeze drying process, that is, increasing product yield while reducing processing time.

US Patent:

39797066, Sep 7, 1976

Filed:

Jun 26, 1975

Appl. No.:

5/590621

Inventors:

Thomas A. Jennings - Glenside PA

Assignee:

Hull Corporation - Hatboro PA

International Classification:

H01F 2106

US Classification:

336 83

Abstract:

An electrical inductance coil, having a central opening therethrough, is surrounded by a spaced shield of magnetic metal, and a screw of magnetic metal is mounted in engagement with one side of the shield for adjustable extension through the central opening in the coil for varying the spacing between the inner end of the screw and the confronting, opposite side of the shield.