DAVID MONTAGUE BERCHOWITZ
Pilots at Congress St, Shade, OH

2011000, Jan 13, 2011

Jul 1, 2010

12/828387

David M. Berchowitz - Athens OH, US

GLOBAL COOLING, INC. - Athens OH

F02G 1/04

60520

An improved free piston Stirling machine having a gamma configuration. The displacer and each piston is reciprocatable within a cylinder having an unobstructed opening at its inner end into a common volume of the workspace. The common volume is defined by the intersection of inward projections of the displacer cylinder and the piston cylinders. The displacer and the pistons each have a range of reciprocation that extends into the common volume. A displacer drive rod is reciprocatable in a drive rod cylinder and both are positioned outside the common volume and on the opposite side of the common volume from the displacer. The displacer is connected to the displacer drive rod by a displacer connecting rod. Importantly, the displacer and pistons have complementary interfacing surface contours formed on their inner ends which substantially reduces the dead volume of this gamma configured machine.

2011009, Apr 28, 2011

Oct 28, 2010

12/914087

David M. Berchowitz - Athens OH, US

GLOBAL COOLING, INC. - Athens OH

H02K 7/18

290 1 A

A free-piston Stirling machine drivingly coupled to at least one rotary electromagnetic transducer. At least one pulley is oriented in a plane of a reciprocating piston connecting rod. At least one motion translating drive link connects the connecting rod to the pulley by at least two straps so that the pulley moves in rotationally oscillating motion. The two straps extend along an arcuate surface of the pulley into connection to the piston rod at two spaced locations. The pulley is linked to a rotary electromagnetic transducer so that both move in rotationally oscillating motion. Preferably a piston spring resonates the piston at an operating frequency of the Stirling machine and a torsion spring resonates the pulley in rotational oscillation at the operating frequency of the Stirling machine.

5988994, Nov 23, 1999

Oct 21, 1997

8/955081

David M. Berchowitz - Athens OH

Global Cooling Manufacturing Company - Athens OH

F04B 3504

417415

A pump or compressor wherein the volumetric displacement of a piston cylinder assembly is variable. The piston is connected to a crank slider or eccentric mechanical drive, the crankshaft of which oscillates alternately clockwise through a controllably variable angle. theta. and counterclockwise through substantially the same angle. theta. , the angle. theta. being measured from the angular position of the crankshaft or eccentric at which separation between piston and the closed end of the bore is a minimum (Top Dead Center). The angle of crank oscillation controls the degree of volumetric displacement of the piston. The crank shaft is connected to a torsional spring so as to substantially resonate the rotational inertia of the moving parts. An oscillating electric motor supplies the oscillating torque to drive the mechanism at constant frequency but controllably variable angular amplitude.

7075292, Jul 11, 2006

Dec 7, 2004

11/005710

David M. Berchowitz - Athens OH, US

Global Cooling BV - Helmond

G01B 7/14

3242072, 32420724, 702150

An apparatus for determining position of a free piston used in such as hydraulic compressor, which has no mechanical connection with crank shaft, and an apparatus for controlling reciprocating motion of the free piston are disclosed. A free piston position determining apparatus comprises a magnetic sensor disposed in a case containing a free piston, and a magnet disposed on the free piston. The magnet sensor generates pulse train when the magnet is positioned within a pre-determined distance form the magnet sensor. Stroke of the free piston is computed based on duration of the pulse, and offset of the average piston position from designed average position is computed based on interval of the pulse.

2013004, Feb 21, 2013

Aug 16, 2011

13/210704

David M. Berchowitz - Athens OH, US

GLOBAL COOLING, INC. - Athens OH

F02G 1/044

60520

An opposed piston gamma type Stirling machine has its displacer driven by a linear electromagnetic transducer that is drivingly linked to the displacer and is located on the opposite side of the power piston's axis of reciprocation from the displacer preferably in the bounce space. The linear transducer is controlled by an electronic control as a function of sensed inputs of Stirling machine operating parameters. In addition to allowing improvements in stability and efficiency, such a Stirling machine operated as a cooler/heat pump can also be controlled so that its displacer can be driven at (1) a phase angle that pumps heat in one direction through the machine or (2) at another phase angle that pumps heat in the opposite direction through the machine and allows selectively switching between the heat pumping directions.

5642622, Jul 1, 1997

Aug 17, 1995

8/516355

David M. Berchowitz - Athens OH
Dale E. Kiikka - Athens OH

Sunpower, Inc. - Athens OH

F25B 900

62 6

A refrigerator having a heat pump mounted within the insulated portion of the refrigerator cabinet which is cooled by the heat pump. The heat pump is a Stirling cycle or Rankine cycle heat pump, is used to cool the interior of the refrigerator cabinet, and is mounted in an insulated housing to limit the transfer of heat from the heat pump into the refrigerator cabinet. A heat transporting conduit connects the heat pump to an exterior heat exchanger mounted outside the refrigerator cabinet.

7073567, Jul 11, 2006

Aug 1, 2002

10/474403

David M. Berchowitz - Athens OH, US

Global Cooling BV - Helmond

F25B 29/00

165 481, 165175

The invention provides a compact and inexpensive cooling device with high heat transfer efficiency and with easy maintenance. The cooling device includes a condenser (), an evaporator (), and a pair of refrigerant flow passages between them. In each of the condenser () and the evaporator (), through holes () are formed in parallel with each other. The condenser () is formed in a cylindrical shape and installed around the cooling head of the refrigerator by a clamp (). The evaporator () is installed the outside. The refrigerant is liquefied in the condenser () by releasing its heat, flows down into the evaporator () through the flow passage and is vaporized in the evaporator () by absorbing heat from the outside. The vaporized refrigerator flows up and returns into the condenser ().

2010029, Dec 2, 2010

Aug 13, 2010

12/855762

David M. Berchowitz - Athens OH, US
Neill Lane - Athens OH, US
Todd Cale - Coolville OH, US
James Gary Wood - Albany OH, US

SUNPOWER, INC. - Athens OH

B21D 53/02, B23P 15/26

29890034

A regenerator having a plurality of involute foils disposed in an annular gap between an inner cylindrical tube and an outer cylindrical tube. The involute shape of the foils provides uniform spacing throughout the entire regenerator and substantial surface area for fluid contact.

6991023, Jan 31, 2006

Apr 24, 2003

10/421273

David M. Berchowitz - Athens OH, US
Neill Lane - Athens OH, US
Todd Cale - Coolville OH, US
James Gary Wood - Albany OH, US

Sunpower, Inc. - Athens OH

F28D 17/00

165 10, 60526

A regenerator having a plurality of involute foils disposed in an annular gap between an inner cylindrical tube and an outer cylindrical tube. The involute shape of the foils provides uniform spacing throughout the entire regenerator and substantial surface area for fluid contact.