Resources Contact Us Home
Speed reduction gear having axial and transverse components which are in equilibrium

Image Number 2 for United States Patent #4643039.

The two endless screws (202, 203) and the four gear wheels (207, 209-307, 309) which mesh with the endless screws and with each other in pairs, have inclined teeth in opposite directions at an angle a, while the secondary gear wheels (210, 310) fixed in rotation with two respective ones of the gear wheels (209, 309) have teeth inclined at an angle b such that tan a/tan b=D1/D2, where D1 is the pitch diameter of the gear wheels and D2 is the pitch diameter of the secondary gear wheels. The secondary gear wheels (210, 310) mesh with tertiary gear wheels (213, 313) which are fixed on an intermediate shaft (315) which bears a gear wheel having straight teeth and forming part of an outlet reduction stage.

  Recently Added Patents
Cover opening and closing unit and image forming apparatus including the same
Method and apparatus for controllable communication
Devices including composite thermal capacitors
Ion generation using wetted porous material
Bird deterrent
Fabrication method of semiconductor device and fabrication method of dynamic threshold transistor
Method of manufacturing a plurality of electronic assemblies
  Randomly Featured Patents
Composition of matter and process
Apparatus and method for aligning and printing integral images
Method of controlling the power of a welding unit in ultrasonic welding operations and an arrangement for carrying out the method
Electrical connector assembly having anti-decoupling mechanism
Real-time responsive motor control system
Digital audio player
Recovering apparatus for recovering a status of an ink jet recording head
Four-cycle engine
Prodder with force feedback
Track leveling and ballast tamping machine