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
Bacterial superantigen vaccines
Apparatus and method of preventing signal delay in display device
Collaborative data redundancy for configuration tracking systems
Telephone relaying apparatus, telephone relaying method, and program
Fixing device and image forming apparatus
Parameter decoding apparatus and parameter decoding method
Generation of uniform fragments of nucleic acids using patterned substrates
  Randomly Featured Patents
Countertop for a commercial aircraft passenger cabin lavatory
Method and apparatus for communicating fax data over the internet
Multicomponent, low density cubic L1.sub.2 aluminides
Apparatus for assembling rod-like articles
Process for extraction of gallium from alkaline gallium-containing solutions
Carrying device for semiconductor wafers
Golf swing practice apparatus with automatic teeing device
Long range travel MEMS actuator
Silicone rubber mold
Conveying apparatus for paper products, in particular in stream form