Charles C Hansen

US Patent:

6989709, Jan 24, 2006

Filed:

Jul 11, 2001

Appl. No.:

09/903239

Inventors:

Delbert Raymond Cecchi - Rochester MN, US
Charles C. Hansen - Kenyon MN, US
Curtis Walter Preuss - Rochester MN, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06G 7/26

US Classification:

327563, 327 65, 330258, 330261

Abstract:

A differential amplifier for providing common-mode rejection while providing differential-mode amplification includes an active differential amplification element electrically coupled to a first input signal, a second input signal and an output signal. The active differential amplification element is also electrically coupled to a first voltage and to a different second voltage. A passive bias element is electrically coupled to the active differential amplification element. The passive bias element is capable of biasing the active differential amplification element so that the active differential amplification element operates in a saturation mode. The active differential amplification element thereby generates the output signal so that the output signal corresponds to a voltage difference between the first input signal and the second input signal.

US Patent:

20070284003, Dec 13, 2007

Filed:

Jun 8, 2006

Appl. No.:

11/423050

Inventors:

Charles C. Hansen - Hinsdale IL, US
Eric J. Guldberg - Darien IL, US

International Classification:

F15B 13/00

US Classification:

137269

Abstract:

A universal valve for refrigeration systems including an investment-cast, stainless-steel valve body, a piston and one of a plurality of an anodized aluminum adapter plates. Each adapter plate configured to be removed and replaced with another to operate the valve to perform a different function. The investment-cast, stainless steel valve body includes an inlet and an outlet which each include a flangeless distal end configured, as cast, with an unmachined, weldable rim for integration without mechanical connections in a leak-free configuration.

US Patent:

50310682, Jul 9, 1991

Filed:

Dec 1, 1988

Appl. No.:

7/278350

Inventors:

Charles C. Hansen - Hinsdale IL
John A. Yencho - Elmhurst IL
William J. Barbier - Hazelwood MO
Curtis H. Knapp - Aurora IL
Orval J. Kuhn - Warrenville IL

Assignee:

Hansen Technologies Corporation - Burr Ridge IL

International Classification:

G01R 2726

US Classification:

361284

Abstract:

An improved capacitance bridge type liquid level control system for use in refrigeration applications is disclosed which provides improved apparatus for sealing the probe in its mounting and for insulating same against the condenser reservoir stand pipe in which it is mounted. Improved sealing between the probe and probe body is accomplished through an annular PTFE seal which when compressed pushes inwardly to seal a tubular PTFE insulation against annular ridges in the side of the probe rod proper. The improved probe rod shape also maintains a proper stabilized axial alignment between the probe rod and the probe body. Improved circuitry for the capacitance bridge liquid level control system includes a built-in simulation circuit for testing the apparatus, improved voltage feedback damping for providing a stable circuitry utilizing digital display, light emitting diodes, improved anti-splashing circuitry for stabilizing digital display read out, and a reversed lower differential function setting for enabling the low level adjustment set point to be set more accurately heretofore known.

US Patent:

54387302, Aug 8, 1995

Filed:

Aug 16, 1993

Appl. No.:

8/106619

Inventors:

Charles C. Hansen - Hinsdale IL

Assignee:

Hansen Technologies Corporation - Burr Ridge IL

International Classification:

A47B 9502

US Classification:

16114R

Abstract:

A handle for a valve stem having a polygon shaped cross section has a transverse hole for receiving the polygon cross section portion of the stem. A second hole having an axis perpendicular to the transverse hole intersects a portion of the transverse hole which is adapted to receive one of the corners of the polygon shaped valve stem. A removable pin is thereafter forced into the second hole to deform a portion of the valve stem and retain the handle on the stem.

US Patent:

62409484, Jun 5, 2001

Filed:

Dec 23, 1999

Appl. No.:

9/471780

Inventors:

Charles C. Hansen - Hinsdale IL
John A. Yencho - Elmhurst IL
Orval J. Kuhn - Warrenville IL

Assignee:

Hansen Technologies Corporation - Burr Ridge IL

International Classification:

F16K 1716

US Classification:

137 6828

Abstract:

A rupture disk which is welded or brazed to a relatively massive or robust ring member integrally attached to the remainder of the body by an isolating member of reduced cross-sectional thickness. The upper part of the tubular body is attached by welding or brazing to the lower half of the body at a flange which extends outwardly from the mounting member. This eliminates the need for compressive forces to effect a seal, and one or two sources of potential leakage and setpoint shift (assembly force) are thereby eliminated.

US Patent:

40221148, May 10, 1977

Filed:

Jan 15, 1976

Appl. No.:

5/649338

Inventors:

Charles C. Hansen - Hinsdale IL
John D. Nilles - Roselle IL
Olaf E. Kivioja - Villa Park IL

Assignee:

Refrigerating Specialties Company - Broadview IL

International Classification:

F01B 1900
F16J 302

US Classification:

92 98R

Abstract:

The longevity and safety of pressure-responsive, flexible diaphragms is improved by providing laminated construction of sealing and reinforcing layers that "breathe" through a portion of their cross sections. In one embodiment the flexible diaphragm comprises a laminate having a layer of perforated fabric-like reinforcing material on the low pressure side and a layer of impermeable elastomeric sealing material on the high pressure side with or without an additional layer of said fabric, with or without perforations on the high pressure side and with the areas of bond between the reinforcing material and sealing material being substantially continuous. In another embodiment the laminate comprises an inner layer of perforated fabric-like material bonded to outer layers of perforated elastomeric material on the low pressure side. The elastomeric sealing material layer on the high pressure side of this latter embodiment may be perforated.

US Patent:

45508968, Nov 5, 1985

Filed:

Apr 4, 1984

Appl. No.:

6/596653

Inventors:

Charles C. Hansen - Downers Grove IL

International Classification:

F16K 2500
B01D 2124

US Classification:

251 84

Abstract:

An improved valve-strainer body or housing is disclosed wherein a single structure is adapted for use as both a valve housing for globe valves, gate valves, check valves and the like, and also utilized as a casing for a strainer. The housing is sized such that the single housing may be utilized in differing sized pipeline systems from approximately 1/4 inch IPS to 1 inch IPS. The invention also discloses superior means of using the valve body casing in connection with not only threaded pipe systems, but also brazed pipe systems and welded pipe systems. Finally, improvements in the valve assembly structure is also disclosed.

US Patent:

46477403, Mar 3, 1987

Filed:

Jan 28, 1985

Appl. No.:

6/695278

Inventors:

Charles C. Hansen - Hinsdale IL
John A. Yencho - Elmhurst IL

Assignee:

Hansen Technologies Corp. - Downers Grove IL

International Classification:

H01H 3518

US Classification:

200 84C

Abstract:

An improved refrigerant float switch assembly includes a float chamber adapted for mounting in fluid communication with a refrigeration system, and a proximity switch assembly mounted adjacent the float chamber and having a tubular extension of the float chamber positioned therein. Improvements in the float chamber include the use of a baffle adjacent and inlet port thereof, and a float impact damper positioned inwardly adjacent the connection between the float chamber and tubular extension thereof. Improvements in the proximity switch portion of the refrigerant float switch assembly include a switch mechanism having an activating arm mounted directly thereon with the actuation of the switch being positioned internally of the assembly between the switch housing and the actuation arm therefore. In a second embodiment of the invention, a plurality of proximity switches are mounted on the switch assembly in spaced relation along the tubular extension of the float chamber.