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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Cearley; James E.
Address:
San Jose, CA
No. of patents:
11
Patents:












Patent Number Title Of Patent Date Issued
5247549 Control rod spacer pad September 21, 1993
A spacer pad for a nuclear control rod includes first and second halves each including a head and a shank. The shanks are configured for joining together the pad first and second halves, and the shanks are independently locked together for preventing the disassembly thereof. In an exempl
5247545 Control blade servicing assembly September 21, 1993
An assembly for servicing a cruciform control blade includes a carriage having first and second crossarms each containing a generally U-shaped slot for receiving the top of the control blade. The first crossarm includes a clamping actuator to rigidly clamp the carriage to the blade t
5243631 Control rod servicing apparatus and method September 7, 1993
An apparatus and method are provided for servicing an irradiated nuclear control rod underwater in a reactor building servicing pool. A turntable containing a plurality of spaced apart tools is positioned adjacent to the control rod. A first tool aligns the turntable relative to the radi
5064602 Control rod flow diverters November 12, 1991
Flux-trap control rod flow diverters comprising a series of tabs formed along the length of one side of a hafnium neutron absorber tube, and bent inwards towards the opposing side so as to allow water in one side of the tube, and simultaneously divert internal water out of corresponding
4929412 Control rod May 29, 1990
An apparatus and process for control rod assembly and construction for a nuclear reactor is disclosed wherein the control rod is of cruciform configuration having a plurality of and preferably four flat planar members. Each planar member is made up with an assembly of square cross se
4902470 Control rod February 20, 1990
An apparatus and process for control rod assembly and construction for a nuclear reactor is disclosed wherein the control rod is of cruciform configuration having a plurality of and preferably four flat planar members. Each planar member is made up with an assembly of square cross se
4882123 Hafnium control rod for nuclear reactors November 21, 1989
A neutron absorbing control device for service in nuclear reactors utilizing fissionable fuel. The control device includes hafnium metal as the neutron absorbing material which is employed in a unique structure which maximizes the advantages of hafnium while minimizing its disadvanta
4853176 Hafnium stainless steel absorber rod for control rod August 1, 1989
In a control rod construction for moderating and controlling a reaction of a nuclear reactor, a control rod structure is disclosed in which hafnium is welded to stainless steel. Typically, the control rod is confined for movement axially along its length into and out of the reactor. The
4676948 Nuclear reactor control rod June 30, 1987
A control rod for a nuclear reactor wherein plates of neutron absorbing material (e.g. hafnium) are used in the upper portion thereof and tubes containing a different neutron absorbing material (e.g. boron) are positioned beneath the plates. To relieve the tubes of the weight of the
4624826 Control rod velocity limiter November 25, 1986
A velocity limiting device providing greater resistance to motion through a fluid in one direction than in the opposite direction. The device includes a toroidally shaped control member having a smooth generally conical surface on one side for low resistance movement through the fluid in
4420458 Nuclear fuel assembly with coolant conducting tube December 13, 1983
In a nuclear fuel assembly having a coolant conducting or water tube which also retains the spacers in axial position, the fuel rods experience greater axial growth with exposure than the water tube creating a risk that the water tube might become disengaged from the supporting tie p










 
 
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