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
System and method for receiving MBMS broadcasting service
Specializing disambiguation of a natural language expression
Method of adenoviral vector synthesis
Hydrofluorocarbon refrigerant compositions for heat pump water heaters
Second order correction circuit and method for bandgap voltage reference
Light-emitting diode package and method for manufacturing the same
Nanocatalysts structure, process for the preparation and use thereof
  Randomly Featured Patents
Ozone generating apparatus
System and method for coding and identification in a wireless transmit and receive protocol for single-frequency peripheral devices
Elongated tray
Switch unit having a circuit breaker and a disconnector with common drive means
Tunable cavity resonator for frequency filter
Flashlight
Toy kitchen set with repositionable island
System for avoiding start code emulation and long carry-over propagation
Powered helmet with visor defogging element and accessories
Data-processing system with CC-NUMA (cache-coherent, non-uniform memory access) architecture and remote cache incorporated in local memory