CHRISTOPHER CHARLES LANGENFELD
Pilots at Cathedral Cir, Nashua, NH

6381958, May 7, 2002

Mar 2, 2000

09/517245

Dean L. Kamen - Bedford NH
Thomas Q. Gurski - Lawrence MA
Christopher C. Langenfeld - Nashua NH
Ryan Keith LaRocque - Groton MA
Michael Norris - Manchester NH
Kingston Owens - Bedford NH

New Power Concepts LLC - Manchester NH

F01B 2910

60517, 60523, 60524

A thermal cycle engine having a heat exchanger for transferring thermal energy across the heater head from a heated external fluid to the working fluid. The heat exchanger has a set of heat transfer pins each having an axis directed away from the cylindrical wall of the expansion cylinder, or, alternatively, a set of fins substantially aligned with the axis of the expansion cylinder. The height and density of the heat transfer pins may vary with distance in the direction of the flow path, and the pin structure may be fabricated by stacking perforated rings in contact with a heater head. A ring burner supplements the main combustor for supplying additional fuel to cause additional combustion of the exhaust gas. A regenerator for the thermal cycle engine has a random network of fibers formed to fill a specified volume and a material for cross-linking the fibers at points of close contact between fibers of the network.

6694731, Feb 24, 2004

Jun 19, 2001

09/884436

Dean L. Kamen - Bedford NH
Thomas Q. Gurski - Goffstown NH
Christopher C. Langenfeld - Nashua NH
Ryan Keith LaRocque - Pepperell MA
Michael Norris - Manchester NH
Kingston Owens - Bedford NH
Jonathan Strimling - Bedford NH

DEKA Products Limited Partnership - Manchester NH

F01B 2910

60524, 60526

A thermal cycle engine having a heat exchanger for transferring thermal energy across the heater head from a heated external fluid to the working fluid. The heat exchanger has a set of heat transfer pins each having an axis directed away from the cylindrical wall of the expansion cylinder. The height and density of the heat transfer pins may vary with distance in the direction of the flow path, and the pin structure may be fabricated by stacking perforated rings in contact with a heater head. Ribs are provided interior to the heater head to enhance hoop strength and thermal transfer.

8505323, Aug 13, 2013

Jul 15, 2011

13/184169

Dean Kamen - Bedford NH, US
Ryan K. LaRocque - Pepperell MA, US
Christopher C. Langenfeld - Nashua NH, US
Stephen M. Ent - Derry NH, US
Andrew A. Schnellinger - Merrimack NH, US
Prashant Bhat - Manchester NH, US
Otis L. Clapp - Epping NH, US

DEKA Products Limited Partnership - Manchester NH

F25D 21/14

62285, 62291

A fluid vapor distillation apparatus. The apparatus includes a source fluid input, and an evaporator condenser apparatus. The evaporator condenser apparatus includes a substantially cylindrical housing and a plurality of tubes in the housing. The source fluid input is fluidly connected to the evaporator condenser and the evaporator condenser transforms source fluid into steam and transforms compressed steam into product fluid. Also included in the fluid vapor distillation apparatus is a heat exchanger fluidly connected to the source fluid input and a product fluid output. The heat exchanger includes an outer tube and at least one inner tube. Also included in the fluid vapor distillation apparatus is a regenerative blower fluidly connected to the evaporator condenser. The regenerative blower compresses steam, and the compressed steam flows to the evaporative condenser where compressed steam is transformed into product fluid. The fluid vapor distillation apparatus also includes a control system.

2013026, Oct 10, 2013

May 24, 2013

13/902123

Christopher O. Evans - Amherst NH, US
N. Christopher Perry - Manchester NH, US
Dirk Albertus van der Merwe - Dunbarton NH, US
Christopher C. Langenfeld - Nashua NH, US
John Matthew Kerwin - Manchester NH, US
Stewart M. Coulter - Bedford NH, US
Keith David Violette - Sandown NH, US
Steven W. Nickson - Derry NH, US
Thomas S. Schnellinger - North Andover NH, US
Alexander H. Muller - Manchester NH, US
Gerald Michael Guay - Greenville NH, US

DEKA Products Limited Partnership - Manchester NH

A61F 2/58

623 62

A prosthetic arm apparatus including a plurality of segments that provide a user of the prosthetic arm apparatus with substantially the same movement capability and function as a human arm. The segments are connectable to one another and connectable to a prosthetic support apparatus that may be adorned by the user. Each segment of the plurality of segments provides a portion of the movement capability, enabling the plurality of connected segments connected to the harness mount to provide substantially the same movement capability as that lacking in the user.

2011023, Sep 22, 2011

Mar 28, 2011

13/073343

Christopher C. Langenfeld - Nashua NH, US
Christopher M. Werner - San Jose CA, US
Ryan K. LaRocque - Pepperell MA, US
Thomas S. Schnellinger - North Andover MA, US

DEKA Products Limited Partnership - Manchester NH

B63H 16/08

440 21

A swimming propulsion device. The swimming propulsion device includes a fuselage at least one propulsor pivotally connected to the fuselage, and in some embodiments, at least one stabilizer affixed to the fuselage. The device also includes a swimmer connection mechanism removably attached to the fuselage by a locking mechanism whereby the swimmer connection mechanism connects a swimmer to the device, and a control mechanism installed within the propulsor. A method for efficient swimming is also disclosed.

7090040, Aug 15, 2006

Jul 11, 2003

10/617608

Dean L. Kamen - Bedford NH, US
Robert R. Ambrogi - Manchester NH, US
J. Douglas Field - Bedford NH, US
John D. Heinzmann - Manchester NH, US
Richard Kurt Heinzmann - Francestown NH, US
Christopher C. Langenfeld - Nashua NH, US

DEKA Products Limited Partnership - Manchester NH

B62D 61/02

180 71, 280 4734, 280 87042

A transporter for transporting a subject over a surface that may be irregular. The transporter includes a support platform for supporting a load, the loaded support platform defining fore-aft and lateral planes and characterized by a load distribution. A plurality of ground contacting elements are coupled to the support platform. At least one of the plurality of ground contacting elements is driven by a motorized drive arrangement. A sensor module generates a signal indicative of the load distribution of the loaded support platform. Based at least on the load distribution, a controller commands the motorized drive arrangement.

7988508, Aug 2, 2011

Aug 6, 2008

12/186719

Christopher C. Langenfeld - Nashua NH, US
Ryan K. LaRocque - Pepperell MA, US
James M. Knight - Windham NH, US
Thomas S. Schellinger - North Andover MA, US

DEKA Products Limited Partnership - Manchester NH

B63H 16/08

440 21, 441 60

A swimming propulsion device. The swimming propulsion device includes a fuselage having a forward section and an aft section, at least one propulsor pivotally connected to the forward section of the fuselage, and in some embodiments, at least one stabilizer affixed to the aft section of the fuselage. The device also includes a swimmer connection mechanism removably attached to the fuselage by a locking mechanism whereby the swimmer connection mechanism connects a swimmer to the device, and a control mechanism attached to the fuselage and the propulsor. A method for efficient swimming is also disclosed.

2008028, Nov 20, 2008

Feb 6, 2008

12/027141

Christopher C. Langenfeld - Nashua NH, US
Christopher O. Evans - Amherst NH, US
Alexander H. Muller - Manchester NH, US
John M. Kerwin - Manchester NH, US
Thomas S. Schnellinger - North Andover MA, US
G. Michael Guay - Greenville NH, US
Dirk A. Van der Merwe - Manchester NH, US

DEKA Products Limited Partnership - Manchester NH

A61F 2/66, A61B 5/103, A61F 2/48

623 57, 623 64, 623 65, 600587, 623 24

A prosthetic arm apparatus comprising a plurality of segments that provide a user of the prosthetic arm apparatus with substantially the same movement capability and function as a human arm.

6062600, May 16, 2000

Jul 14, 1997

8/892566

Dean L. Kamen - Bedford NH
Robert Ambrogi - Manchester NH
Christopher C. Langenfeld - Nashua NH
Stanley B. Smith - Henniker NH

Deka Products Limited Partnership - Manchester NH

B60R 2100, A61G 504, B62M 114

280755

An anti-tipping mechanism for a vehicle that provides a strut actively deployed by rotation from a retracted position so as to bring a wheel into ground contact to inhibit tipping of the vehicle.

2011021, Sep 8, 2011

Mar 3, 2011

13/039640

Dean Kamen - Bedford NH, US
Christopher C. Langenfeld - Nashua NH, US
Andrew A. Schnellinger - Merrimack NH, US
George B. Lanigan - Concord NH, US

DEKA Products Limited Partnership - Manchester NH

H05B 37/02, H02P 9/04

315302, 290 44

A wind turbine is disclosed. The wind turbine includes comprising an inflatable portion comprising one or more blades and a device for rotatably driving the inflatable portion at a predetermined rate for a predetermined time.