Planetary gear transmission systems or components – Planet periphery surrounds axis of interacting gear – Means to change speed ratio between input and output
Reexamination Certificate
2001-12-10
2003-11-25
Parekh, Ankur (Department: 3681)
Planetary gear transmission systems or components
Planet periphery surrounds axis of interacting gear
Means to change speed ratio between input and output
C475S162000, C074S063000, C464S001000, C464S136000
Reexamination Certificate
active
06652406
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a transmission.
2. Description of the Related Art
As a transmission used for machine tools, industrial machinery, construction machinery, agricultural equipment, cars, etc., an electrically-controlled transmission such as inverter, servo motor, etc., is conventionally known.
However, in this conventional transmission, efficiency is poor, resulting in insufficient output of low torque in low-speed zone. In a transmission used for automobile without electric power, control becomes difficult and construction of the transmission becomes complicated.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a transmission having a simple construction, which is easy to make and handle, and highly efficient over a wide range of speeds.
REFERENCES:
patent: 4326748 (1982-04-01), Brusasco
patent: 5893813 (1999-04-01), Yamamoto
patent: 6113511 (2000-09-01), Baker
Armstrong Westerman & Hattori, LLP
Parekh Ankur
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