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
Apparatus with a local timing circuit that generates a multi-phase timing signal for a digital signal processing circuit
Medical device arm
Charged-particle beam lens
Method and system for electronic distribution of product redemption coupons
Motilin-like peptide compound having transmucosal absorbability imparted thereto
Method and system for encrypting data in a wireless communication system
Air filter
  Randomly Featured Patents
Lightweight pelletized materials
Optical signal detection circuit
Bougainvillea hybrid cv. Monka
Excavating blade assembly
Adapter for viewing and scanning images residing on transparent media
Beverage container
Ignition system of multispark type
Operating table for surgical and angiographic applications
Phase control circuit for controlling phase of video signal and sampling clock signal
Razor safety rack