Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Fuel assembly unlatching and handling gripper










Image Number 2 for United States Patent #4647424.

A refueling machine (100) is provided with a latching/unlatching rod (116) which is provided with a hexagonally configured head portion for mated engagement with a hexagonally configured socket (34) defined within a latching/unlatching screw (22) of a fuel assembly (10) whereby the fuel assembly (10) may be securely mechanically connected to the lower core support plate of the reactor internals. The latching/unlatching rod (116) is fixedly connected to a housing (118) which is co-axially disposed within a torque tube (140), the latter of which is fixedly secured to the lower end of a spur gear (130). The spur gear (130) is rotatably engaged with a drive spur gear (148) through means of an idler gear (128), whereby torque is transmitted to the torque tube (140). The torque tube (140) has a square-shaped configuration in cross-section, and the housing (118) has similarly configured flanged portion (144, 146) for cooperation therewith whereby rotary torque is transmitted to the housing (118) and the latching/unlatching rod ( 116). The housing (118), latching/unlatching rod (116), and torque tube (140) are all co-axially disposed within the refueling machine gripper tube (108) and outer stationary mast (102), and a dual winch drive system (112, 124) is provided for independently controlling the vertical movements of the gripper tube (108) and latching/unlatching rod (116), respectively.








 
 
  Recently Added Patents
Termite tubing preventative for non-wood materials
Scalable architecture for rank order filtering
Temporary protective cover for an exposed junction box
Inter vehicle communication system
Projection-type video-image display apparatus
Heat shield and laminated glass
Once daily formulations of tetracyclines
  Randomly Featured Patents
Ear-type clinical thermometer
Variable attenuator connector
Method and apparatus for determining relative movement in an optical mouse
Ink cartridge management system, printer, and ink cartridge
Snow sail sled
Stream operator in a dynamically typed programming language
Method for producing folic acid
Noise silencer for use in joint gap in highway
Exhaust system for vehicular two-cylinder engine
Selectively controllable bobbin thread pull-off mechanism