Richard E Kothmann

6610434, Aug 26, 2003

Aug 10, 2000

09/636248

Robert Draper - Pittsburgh PA
Stephen E. Veyo - Murrysville PA
Richard E. Kothmann - Pittsburgh PA

Siemens Westinghouse Power Corporation - Orlando FL

H01M 810

429 30, 429 25, 429 38

A fuel cell generator contains a plurality of fuel cells ( ) in a generator chamber ( ) and also contains a depleted fuel reactor or a fuel depletion chamber ( ) where oxidant ( ) and fuel ( ) is fed to the generator chamber ( ) and the depleted fuel reactor chamber ( ), where both fuel and oxidant react, and where all oxidant and fuel passages are separate and do not communicate with each other, so that fuel and oxidant in whatever form do not mix and where a depleted fuel exit ( ) is provided for exiting a product gas ( ) which consists essentially of carbon dioxide and water for further treatment so that carbon dioxide can be separated and is not vented to the atmosphere.

7855004, Dec 21, 2010

Oct 13, 2005

11/249792

Arun K. S Iyengar - Delmont PA, US
Raymond A George - Pittsburgh PA, US
Richard E Kothmann - Pittsburgh PA, US

Siemens Energy, Inc. - Orlando FL

H01M 8/10

429 34, 429 38

In one embodiment the present comprises an air inlet , a series of fuel cells , a new fuel inlet , a fuel distributor , a recirculation plenum , and an exhaust. Fresh fuel from the fuel distributor enters the fuel cell stack in a middle-third section of the fuel cell stack, and the fresh fuel is divided into an exhaust fuel flow and a recirculation fuel flow. The exhaust fuel flow passes along a first portion of the series of fuel cells to the exhaust, and the recirculation fuel flow passes along a second portion of the series of fuel cells to the recirculation plenum and mixes with new fuel from the new fuel inlet in the fuel distributor. The recirculation plenum is located at an opposite end of the fuel cell stack from the exhaust, and the fuel-cell stack is of a seal-less design.

42233666, Sep 16, 1980

Nov 15, 1978

5/961011

Andrew S. Sweetana - Bloomington IN
Tapan K. Gupta - Monroeville PA
Richard E. Kothmann - Pittsburgh PA
Joseph C. Osterhout - Bloomington IN

Electric Power Research Institute, Inc. - Palo Alto CA

H02H 322
H02H 904

361127

A gapless surge arrester is disclosed herein and includes a porcelain outer casing and a stack of zinc oxide discs located within the casing for passing surge currents therethrough. Silicon dioxide, preferably sand, is provided between this stack in the casing for transferring heat from the discs to the porcelain outer casing as a result of the surge current and for absorbing fault energy where necessary by changing states.

45827656, Apr 15, 1986

Aug 25, 1981

6/295976

Richard E. Kothmann - Pittsburgh PA

The United States of America as represented by the United States
Department of Energy - Washington DC

H01M 800
H01M 804

429 13

Method and apparatus for cooling electrochemical fuel cell system components. Periodic reversal of the direction of flow of cooling fluid through a fuel cell stack provides greater uniformity and cell operational temperatures. Flow direction through a recirculating coolant fluid circuit is reversed through a two position valve, without requiring modulation of the pumping component.

52968294, Mar 22, 1994

Nov 24, 1992

7/980765

Richard E. Kothmann - Pittsburgh PA
Donald K. Whirlow - Murrysville PA

Electric Power Research Institute, Inc. - Palo Alto CA

H01F 2710

336 60

A core-form transformer winding with liquid coolant flow diversion bands is disclosed. The apparatus includes a winding tube with a central longitudinal axis. A number of coil sections are axially displaced along the central longitudinal axis of the winding tube. Radial ducts are formed between the coil sections. Internal vertical ducts are formed within each of the coil sections. A liquid coolant is used to cool the windings during operation. Flow diversion bands are placed around every other coil section. The flow diversion bands generate a partial blockage of the liquid coolant, which produces a radial flow into one or more of the radial ducts, resulting in vertical flow through the internal vertical ducts.

44292066, Jan 31, 1984

Mar 16, 1982

6/358558

Richard E. Kothmann - Churchill PA

Westinghouse Electric Corp. - Pittsburgh PA

H05B 518

219 1079

A minimum loss multilayer solenoid for induction heating is characterized by the ampere-turns carrying the same current per conductor from one layer to the next on account of the dimensioning of the conductors having width and thickness varying monotonically in opposite directions across the layers. Central cooling for the conductors is accommodated in the parallel layers with sectional distribution of the cooling medium.

41792408, Dec 18, 1979

Aug 29, 1977

5/828466

Richard E. Kothmann - Churchill PA

Westinghouse Electric Corp. - Pittsburgh PA

F01D 518

416 96R

A water-cooled turbine rotor blade having an enlarged radially-extending chamber forming a coolant reservoir connected to cooling passages subadjacent the blade surface. The channels interconnecting the reservoir with the passages are adjacent the blade tip so that the pressurized water (i. e. , due to the centrifugal force caused by the rotation) in the reservoir flows into the channels at the tip and thence through the cooling passages radially inwardly. Heat absorption from the blade causes vaporization of the water as it flows through the passages. The cooling passages terminate radially inwardly (adjacent the hub or root portion) in a space in flow communication with the enlarged chamber and an exhaust port in the downstream face of the root so that vapor is exhausted at the downstream face and any liquid exiting the coolant passages is returned to the reservoir.