1
Patterson John F, Bassler Jr Elmer A, Choby Edward J: Low parasitic capture fuel assembly structure. Westinghouse Electric Corporation, Stratton A T, February 12, 1974: US3791466 (89 worldwide citation)

The basic fuel assembly structure for a nuclear reactor comprises a skeleton made up of individual hollow tubes composed of a zirconium base alloy, such as Zircaloy, and held in place by Inconel or stainless steel grids disposed between stainless steel end nozzles at the top and the bottom of the st ...


2
Patterson John F: Radial blanket assembly orificing arrangement. The United States of America represented by the United States Energy, Horan John A, Belkin Leonard, Cornish Cornell D, July 1, 1975: US3892625 (23 worldwide citation)

Apparatus and method for easily varying the flow and position of flowing metal coolant streams in a liquid metal fast breeder reactor vessel so as to match the coolant flow with the coolant requirements of the reactor as the reactor ages. To this end, radial streams and orifice assemblies are select ...


3
King Peter, Patterson John F, Yates Jack, Brown Charles: Grid spacer and method of making same.. Siemens, July 6, 1988: EP0273183-A2 (12 worldwide citation)

A marked reduction in the pressure drop of cooling liquid through a grid spacer of a nuclear fuel assembly is attained by convexly contouring the upstream (usually the lower) edges (32) of the grid members. Preferably, they are made streamlined or semicylindrical. This can be done by first beveling ...


4
Patterson John F, Von Olnhausen Wayne A, Yates Jack: Mixing grid for a nuclear reactor fuel assembly.. Siemens, September 16, 1987: EP0237064-A2 (9 worldwide citation)

A grid for use in nuclear fuel assemblies is made up of double grid members which are deformed so as to provide channels for the coolant. At least the upper portions (12) of these channels are inclined relative to the axes of the fuel rods and are disposed in such a manner as to cause circulation of ...


5
Patterson John F, Cooke George C, Yates Jack, Bjornard Trond A: Nuclear fuel assembly.. Siemens Power, July 13, 1994: EP0605816-A2 (7 worldwide citation)

An improved fuel rod (12) is provided having a part-length fuel rod portion that improves performance with respect to typical part-length fuel rods without significant degradation of the benefits that are achieved by using such a system, e.g., improved fuel utilization, stability, and shut down marg ...


6
Patterson John F, Macduff Robert B, Yates Jack: Bwr critical-power-enhancing water rod.. Siemens, October 14, 1987: EP0240894-A2 (6 worldwide citation)

A full assembly for a boiling water reactor in which water rods (18) for providing moderating effects and enhanced cooling effects comprise an outer tube having inlet openings (22) disposed near its lower extremity, intermediate exit openings (24) somewhat above the midpoint of the rods (18) and an ...


7
Patterson John F, Cooke George C: Combined coolant vent device and fuel rod for a light water reactor.. Siemens Power, September 15, 1993: EP0560169-A1 (4 worldwide citation)

An improved fuel rod is provided having a part-length fuel rod portion that improves performance with respect to typical part-length fuel rods without significant degradation of the benefits that are achieved by using such a system, e.g., improved fuel utilization, stability, and shut down margin. T ...


8
Patterson John F, Yates Jack, Ewing Richard H: Fuel assembly debris screen.. Siemens, November 6, 1991: EP0455010-A1 (4 worldwide citation)

A debris screen (14) for a fuel assembly for a reactor to which coolant fluid is supplied comprises a substantially planar plate member (22) having an array of coolant openings (25) extending through the plate member dimensioned to trap at least a portion of debris particles carried by the coolant; ...


9
Brown Charles A, Patterson John F, Holzer Rolf: Debris resistant fuel assembly.. Siemens, June 14, 1989: EP0319725-A1 (3 worldwide citation)

A fuel assembly for nuclear reactors which comprises the usual upper and lower tie plates and fuel rods (6) extending between them is made debris-resistant by providing a grid spacer (2) in contact, or very nearly so, with the lower tie plate and so positioned as to subdivide the usual openings (14) ...


10
Patterson John F, Ewing Richard H: Boiling water reactor fuel assembly comprising water rods.. Siemens Nuclear Power, February 10, 1993: EP0526777-A1 (3 worldwide citation)

A fuel assembly for a boiling water nuclear reactor is provided comprising an elongated central Water channel including wall members (40)(42) that define an enclosed fluid flow path therethrough, the channel includes a lower opening for receiving water and allowing water to flow through the fluid fl ...