Christopher F Nelson

US Patent:

7866157, Jan 11, 2011

Filed:

May 12, 2008

Appl. No.:

12/152088

Inventors:

Timothy C. Ernst - Columbus IN, US
Christopher R. Nelson - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02G 3/00
F01K 23/10
F01K 13/00
F01K 25/00

US Classification:

60618, 60645, 60671, 60615, 60616

Abstract:

A waste heat recovery system for use with an engine. The waste heat recovery system receives heat input from both an exhaust gas recovery system and exhaust gas streams. The system includes a first loop and a second loop. The first loop is configured to receive heat from both the exhaust gas recovery system and the exhaust system as necessary. The second loop receives heat from the first loop and the exhaust gas recovery system. The second loop converts the heat energy into electrical energy through the use of a turbine.

US Patent:

7958873, Jun 14, 2011

Filed:

May 12, 2008

Appl. No.:

12/152089

Inventors:

Timothy C Ernst - Columbus IN, US
Christopher R Nelson - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02B 47/08
F02B 33/44
F02M 25/07

US Classification:

12356812, 606052

Abstract:

A system for reducing the temperature of waste heat from a waste heat source of a vehicle engine, including an open loop Brayton cycle having a cooler, a compressor, a turbine, and a shaft coupling the compressor to the turbine. Waste heat and compressed air from the compressor flow through the cooler, thereby transferring heat from the waste heat to the compressed air and lowering the temperature of the waste heat. The heated and compressed air is expanded across the turbine, to cause rotation of the shaft, thereby powering rotation of the compressor. Excess power beyond that necessary to drive the compressor may be drawn off through a generator which has its rotor mounted on the same shaft as the compressor and turbine.

US Patent:

8407998, Apr 2, 2013

Filed:

Dec 1, 2010

Appl. No.:

12/958101

Inventors:

Timothy C. Ernst - Columbus IN, US
Christopher R. Nelson - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F02G 3/00
F01K 23/10
F01K 25/08
F01K 25/00

US Classification:

60616, 60618, 60651, 60671

Abstract:

A waste heat recovery system for use with an engine. The waste heat recovery system receives heat input from both an exhaust gas recovery system and exhaust gas streams. The system includes a first loop and a second loop. The first loop is configured to receive heat from both the exhaust gas recovery system and the exhaust system as necessary. The second loop receives heat from the first loop and the exhaust gas recovery system. The second loop converts the heat energy into electrical energy through the use of a turbine.

US Patent:

8627663, Jan 14, 2014

Filed:

Sep 2, 2009

Appl. No.:

12/552725

Inventors:

Timothy C. Ernst - Columbus IN, US
Christopher R. Nelson - Columbus IN, US
James A. Zigan - Versailles IN, US

Assignee:

Cummins Intellectual Properties, Inc. - Minneapolis MN

International Classification:

F01K 23/10
F02G 3/00
F01K 25/08
F01K 25/00

US Classification:

60618, 60616, 60651, 60671

Abstract:

An energy recovery system and method using an organic rankine cycle is provided for recovering waste heat from an internal combustion engine, which effectively controls condenser pressure to prevent unwanted cavitation within the fluid circulation pump. A coolant system may be provided with a bypass conduit around the condenser and a bypass valve selectively and variably controlling the flow of coolant to the condenser and the bypass. A subcooler may be provided integral with the receiver for immersion in the accumulated fluid or downstream of the receiver to effectively subcool the fluid near the inlet to the fluid pump.

US Patent:

8635871, Jan 28, 2014

Filed:

Jan 31, 2013

Appl. No.:

13/756263

Inventors:

Christopher R. Nelson - Columbus IN, US

Assignee:

Cummins Inc. - Columbus IN

International Classification:

F01K 23/10
F02G 3/00
F01N 3/02
F01N 5/02

US Classification:

60618, 60320, 60616

Abstract:

A waste heat recovery system for use with an engine. The waste heat recovery system receives heat input from both an exhaust gas recovery system and exhaust gas streams. The system includes a first loop and a second loop. The first loop is configured to receive heat from both the exhaust gas recovery system and the exhaust system as necessary. The second loop receives heat from the first loop and the exhaust gas recovery system. The second loop converts the heat energy into electrical energy through the use of a turbine.

US Patent:

20080167729, Jul 10, 2008

Filed:

Jan 10, 2008

Appl. No.:

11/972274

Inventors:

Christopher M. Nelson - Lafayette IN, US
Jessica L. Rose - Holland OH, US

International Classification:

A61F 2/02

US Classification:

623 2372

Abstract:

An implantable tissue reinforcement device useful for treating or preventing the formation of parastomal hernias forming about a surgically created stoma. The tissue reinforcement device can comprise a synthetic or mammalian-derived sheet-like graft member, such as a resorbable material that promotes tissue ingrowth, wherein a sizing pattern is included that comprises linear indicia radiating outward from a stomal aperture. The linear indicia facilitate creation of a resized stomal opening in the graft member sufficiently large to allow passage of the resected bowel portion. A series of cuts made along the indicia create a plurality of flaps about the resized opening that are configured to abut the bowel portion and enhance reinforcement the stomal region after implantation. In one embodiment, the linear indicia comprises a series of weakened (e.g., perforated) lines that facilitate the cutting of the material by a scalpel, scissors, etc. The clinician resizes the stomal opening to a known diameter using reference indicia, such as diameter indicia and circular guide indicia. The sizing pattern can be imprinted on or etched into the material of the graft member, or it can be at least partially located on a separate template that is either laid over the graft member, preattached as a cuttable overlay, or used as a reference guide.

US Patent:

20100249830, Sep 30, 2010

Filed:

Jun 8, 2010

Appl. No.:

12/796070

Inventors:

Christopher M. Nelson - Lafayette IN, US

International Classification:

A61B 17/03

US Classification:

606213

Abstract:

The present invention provides, in certain aspects, devices and methods for plugging passageways and other open spaces in the body. In one embodiment, a plugging assembly comprises a first plug member and a second plug member, wherein the second plug member is configured to contact and move a portion of the first plug member in plugging a body passageway. These plug members may be formed with one or more of a variety of biocompatible materials including some that are naturally derived and some that are non-naturally derived. In another embodiment, such a plugging assembly is combined with a device that is suitable for delivering the assembly into a body passageway.

US Patent:

20120023946, Feb 2, 2012

Filed:

Aug 5, 2011

Appl. No.:

13/204568

Inventors:

Timothy C. ERNST - Columbus IN, US
Christopher R. NELSON - Columbus IN, US

Assignee:

CUMMINS INTELLECTUAL PROPERTIES, INC. - Minneapolis MN

International Classification:

F01K 13/02

US Classification:

60660

Abstract:

The disclosure provides a system including a Rankine power cycle cooling subsystem providing emissions-critical charge cooling of an input charge flow, which includes at least one of an exhaust gas recirculation (EGR) source and a charge air source, upstream of an intake internal combustion engine. The system includes a boiler fluidly coupled to the input charge flow and adapted to transfer heat from the input charge to a working fluid of the Rankine power cycle subsystem and vaporize the working fluid, an energy conversion device fluidly coupled to the boiler and adapted to receive vaporized working fluid and convert the energy of the transferred heat, a condenser fluidly coupled to the energy conversion device and adapted to receive the working fluid from which the energy was converted, a pump having an inlet fluidly coupled to an outlet of the condenser and an outlet fluidly coupled to an inlet of the boiler, said pump adapted to move fluid from the condenser to the boiler, an adjuster that adjusts at least one parameter of the Rankine power cycle subsystem to change a temperature of the input charge exiting the boiler, and a sensor adapted to sense a temperature characteristic of the vaporized input charge. The system includes a controller that can determine a target temperature of the input charge sufficient to meet or exceed predetermined target emissions and cause the adjuster to adjust at least one parameter of the Rankine power cycle to achieve the predetermined target emissions.