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
Protein kinase C inhibitors and uses thereof
Digital camera dock having movable guide pins
Multi-dimensional tuple support in rule engines
Data processing method
Encoder that detects positional information of a moving body generating interference fringes that move in opposite directions
Wireless updating of hearing devices
Alkaline battery
  Randomly Featured Patents
Structural fasteners and components thereof
Data carousel receiving and caching
Integrated circuit memory devices that support selective mode register set commands and related memory modules, memory controllers, and methods
Infrared detection of authenticity of security documents comprising electromagnetic particles
Bus monitor with selective capture of independently occuring events from multiple sources
Breaker system for high viscosity fluids
Liquid crystal display device and electronic apparatus
Hydrocarbon conversion with crystalline silicate particle having an aluminum-containing outer shell
Sun and privacy screen apparatus
Rate recording system