Charles A Coleman

US Patent:

44345496, Mar 6, 1984

Filed:

Sep 30, 1982

Appl. No.:

6/431002

Inventors:

Peter R. Smith - Littleton CO
Charles Coleman - Lakewood CO

Assignee:

Statitrol, Inc. - Lakewood CO

International Classification:

H05K 330

US Classification:

29832

Abstract:

An improved, selective, radiation sensing device is provided which includes a thin strip of pyroelectric material. One side of the material is coated with a continuous layer of metallic material to form an electrode while the opposite side is coated with at least a pair of electrodes and the output of the electrodes are electrically connected to a differential amplifier. A layer of energy filter material is applied over the continuous electrode. This layer is transparent to all energy outside of a desired energy frequency band to which the device is to be sensitive but absorbs and converts to heat all energy applied which is within this band. This heat is conducted quickly into the pyroelectric material which produces a voltage change in the output from the corresponding electrodes. By positioning the device at the focal point of a concave mirror, the output from the electrodes can be used to energize an alarm signal or the magnitude and frequency of the output of the device can indicate the size and movement of an energy source such as a human body. A novel method of making the device is included which facilitates the fabrication and reduces handling problems and costs.

US Patent:

43799710, Apr 12, 1983

Filed:

Nov 10, 1980

Appl. No.:

6/205146

Inventors:

Peter R. Smith - Littleton CO
Charles Coleman - Lakewood CO

Assignee:

Statitrol, Inc. - Denver CO

International Classification:

G01J 100

US Classification:

250342

Abstract:

An improved, selective, radiation sensing device is provided which includes a thin strip of pyroelectric material. One side of the material is coated with a continuous layer of metallic material to form an electrode while the opposite side is coated with at least a pair of electrodes and the output of the electrodes are electrically connected to a differential amplifier. A layer of energy filter material is applied over the continuous electrode. This layer is transparent to all energy outside of a desired energy frequency band to which the device is to be sensitive but absorbs and converts to heat all energy applied which is within this band. This heat is conducted quickly into the pyroelectric material which produces a voltage change in the output from the corresponding electrodes. By positioning the device at the focal point of a concave mirror, the output from the electrodes can be used to energize an alarm signal or the magnitude and frequency of the output of the device can indicate the size and movement of an energy source such as a human body. A novel method of making the device is included which facilitates the fabrication and reduces handling problems and costs.

US Patent:

40504824, Sep 27, 1977

Filed:

Mar 31, 1976

Appl. No.:

5/672104

Inventors:

Larry K. W. Ching - Littleton CO
Charles E. Coleman - Lakewood CO
Toshio Uba - Denver CO

Assignee:

The Gates Rubber Company - Denver CO

International Classification:

H01M 700
B05C 1100

US Classification:

141 11

Abstract:

Method and apparatus are disclosed for the pasting of foraminous battery plate substrates with viscous, thixotropic pastes using an extrusion type bifurcated nozzle.

US Patent:

40442683, Aug 23, 1977

Filed:

Jan 5, 1976

Appl. No.:

5/646731

Inventors:

Ronald O. Hammel - Englewood CO
Charles E. Coleman - Lakewood CO

Assignee:

The Gates Rubber Company - Denver CO

International Classification:

H02J 906

US Classification:

307 66

Abstract:

Circuitry is provided for automatically selectively switching a load from a primary power source to a secondary power source, and back again, including switch means connected between the primary and secondary power sources, and control circuit means which controls opening and closing of the switch according to the sensed voltage level of the primary source. Once the secondary power source has been switched on, at such time as its voltage level drops below a predetermined level the switch can be adapted to automatically disconnect the secondary power source (e. g. , battery) from the load.

US Patent:

39649342, Jun 22, 1976

Filed:

May 15, 1975

Appl. No.:

5/577813

Inventors:

Larry K. W. Ching - Littleton CO
Charles E. Coleman - Lakewood CO

Assignee:

The Gates Rubber Company - Denver CO

International Classification:

H01M 230

US Classification:

136135R

Abstract:

A through-the-partition connector particularly for lead-acid cells or batteries is disclosed in which a stud insert of relatively low electrical resistivity is embedded within a deformable lead shroud post which is tightly seated within the partition. In one aspect, the lead shroud and the partition seat are configured with inclined ramp portions, e. g. , frustroconical in shape, and an interference fit is formed therebetween for an improved seal. In another aspect, the stud has a lower leg or other extension projecting therefrom, and which is fully encased by the lead shroud, particularly for increasing the current carrying capability of the connector.