Raymond M Schaeffer

US Patent:

20090064690, Mar 12, 2009

Filed:

Sep 6, 2007

Appl. No.:

11/899598

Inventors:

John Martin Girard - Downers Grove IL, US
David Joseph King - Frankfort IL, US
John Nicholas Hryn - Naperville IL, US
Raymond James Schaeffer - Lake Zurich IL, US

International Classification:

F25B 25/00
F25D 17/00
F25D 25/00

US Classification:

62 62, 62332

Abstract:

A cryogenic enhanced mechanical freezer system and method are provided. The disclosed system includes a mechanical freezer compartment adapted for freezing food products, a cryogen injection system adapted to directly inject cryogen into the mechanical freezer compartment, an exhaust system adapted to rapidly evacuate cryogen vapors from the freezer compartment; and a freezer control system adapted to operatively control the exhaust system and cryogen injection system in response to selected inputs. The selected inputs may include user inputs as well as inputs received from a temperature sensor disposed in the freezer compartment and a gas analyzer adapted to monitor concentrations of selected gases within the freezer compartment. Access to the freezer compartment is prevented during cryogen injection and when the atmosphere in the freezer compartment is not safe as determined by the gas analyzer.

US Patent:

20090090112, Apr 9, 2009

Filed:

Sep 10, 2008

Appl. No.:

12/207535

Inventors:

JOHN MARTIN GIRARD - Downers Grove IL, US
DAVID JOSEPH KING - Frankfort IL, US
JOHN NICHOLAS HRYN - Naperville IL, US
RAYMOND JAMES SCHAEFFER - Lake Zurich IL, US
GERALD KUZYK - Montreal, CA
GLENN TOYOSHI SAMESHIMA - Oak Park IL, US
ROBERT J. CHAMBERLAIN - Oak Forest IL, US

International Classification:

F17C 7/04
F25B 19/00
F25D 13/06
F25D 25/04

US Classification:

62 481, 62 511, 62380, 62 63

Abstract:

A cryogenic enhanced mechanical freezer system and method are provided. The disclosed system includes a mechanical freezer compartment adapted for freezing food products on a conveyor, a cryogen injection system adapted to directly inject cryogen into a shrouded zone proximate the conveyor in the mechanical freezer compartment, an exhaust system adapted to rapidly evacuate cryogen vapors from the freezer compartment; and a freezer control system adapted to operatively control the exhaust system and cryogen injection system in response to selected inputs so as to not adversely affect the mechanical refrigeration capacity associated with the mechanical freezer. The selected inputs may include user inputs as well as inputs received from one or more temperature sensors disposed in the freezer compartment and a gas analyzer adapted to monitor concentrations of selected gases within the freezer compartment. Access to the freezer compartment is prevented using a door interlock arrangement during any cryogen injection operations and when the atmosphere in the freezer compartment is not safe as determined by the gas analyzer.

US Patent:

61112119, Aug 29, 2000

Filed:

Nov 16, 1999

Appl. No.:

9/440775

Inventors:

Joseph H. Dziedzic - Addison IL
Raymond J. Schaeffer - Lake Zurich IL

Assignee:

AEC, Inc. - Wood Dale IL

International Classification:

H01H 3500

US Classification:

200 612

Abstract:

A sensor switch for controlling the fill level of granular material filled into a container in which the sensor may either be mounted adjacent a fill path of the container or at a separate location. The sensor includes an elongated arm pivotally attached to a bracket for operating a switch located within the bracket. The sensor may be adjustably mounted on an elongated, remote support member mounted either to the side walls or to the top of the container. The sensor may have three operating positions including an initial position, an actuated position in which the arm actuates the switch, and a third position in which the arm releases the switch.

US Patent:

50060198, Apr 9, 1991

Filed:

Jun 29, 1989

Appl. No.:

7/375458

Inventors:

Joseph H. Dziedzic - Chicago IL
Daniel A. Rubino - Carol Stream IL
Raymond J. Schaeffer - Lyons IL

Assignee:

AEC, Inc. - Wood Dale IL

International Classification:

B65G 5342

US Classification:

406152

Abstract:

A pneumatic pickup probe or wand, for picking up a dry flowable material from a container and introducing that material into a vacuum conveyor system, constitutes an elongated unitary pickup tube having a plurality of axially displaced air control holes near the vacuum conduit connection end of the tube; the material entry end of the tube is cut off at an acute angle (preferably about 45. degree. ), has a narrow, elongated flow modulation slot of about three inches (7. 5 cm) axial length extending toward the hose connection end of the tube, and has an anti-closing spacer to preclude blockage of the material entry opening.