Resources Contact Us Home
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
Backlight assembly, method for driving backlight assembly, and liquid crystal display having the same
Controlling transmission resources in mobile radio systems with dualtransfer mode
Power management method for reducing power of host when turning off main monitor and computer system applying the same
Electromagnetic shield for a passive electronic component in an active medical device implantable lead
Time sharing type autostereoscopic display apparatus and method for driving the same
Utility knife
Method and apparatus for content-aware resizing of data chunks for replication
  Randomly Featured Patents
Method for fabricating an electronic device substrate
Voice control system and navigation system using same
Method for preparing polyamine compounds
Swappable electronic device having locking element
Polymeric cyanine dye
Method and apparatus to extract integer and fractional components from floating-point data
Vented injection molding machine
Device for sharpening knives, scissors or other cutting tools
Hydraulic drive system for a vehicle