Step-up reduction gearing

Details Step-up reduction gearing Step-up reduction gearing

2002-04-19

2004-04-06

Lewis, Tisha D (Department: 3681)

Planetary gear transmission systems or components

Planetary gearing or element

C475S343000

Reexamination Certificate

active

06716134

ABSTRACT:

TECHNICAL FIELD
The subject of the present invention is a speed reducer of the type comprising at least one first reduction stage and one second reduction stage, in which the second stage has cylindrical gears with drive input and output shafts having parallel axes.
BACKGROUND ART
The term “reducer” is used in this context in its most general meaning of a transmission member which can operate either to reduce or to gear up the relative speeds of a main drive input shaft and a main drive output shaft. A reducer including the characteristics listed above is known by the term “CYCLO MODULAR SYSTEM” and is produced by Sumitomo Cyclo Drive Europe Ltd.
This CYCLO transmission system is particularly useful when it is necessary to use a reducer with parallel or perpendicular axes having a high reduction ratio. It is very suitable for oscillating mounting. CYCLO reducers consist of a first cycloidal reduction stage combined with a second reduction stage with parallel axes, having a hollow drive output shaft. A main disadvantage of this transmission system is its axial bulkiness which, particularly for oscillating mounting, is unsuitable for certain applications in which axial compactness of the reducer is fundamental.
DISCLOSURE OF THE INVENTION
The main task of the present invention is to provide a speed reducer which is designed structurally and functionally to prevent the technical problems complained of with reference to the prior art mentioned.


REFERENCES:
patent: 3459070 (1969-08-01), Holdeman
patent: 3770074 (1973-11-01), Sherman
patent: 3854349 (1974-12-01), Michling
patent: 4158971 (1979-06-01), Szalai et al.
patent: 4254669 (1981-03-01), Schulz
patent: 4380274 (1983-04-01), Abraham et al.
patent: 4384498 (1983-05-01), Eichinger
patent: 4662246 (1987-05-01), Cheek et al.
patent: 295 02 981 (1996-08-01), None
patent: 2 378 647 (1978-08-01), None
patent: 1 340 593 (1973-12-01), None
International Search Report dated Nov. 30, 2000.

Affiliated with

Also associated with

Rating

Step-up reduction gearing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Step-up reduction gearing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Step-up reduction gearing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3231386