Rotary expansible chamber devices – Working member has planetary or planetating movement – Plural working members or chambers
Reexamination Certificate
1999-11-16
2001-04-10
Denion, Thomas (Department: 3748)
Rotary expansible chamber devices
Working member has planetary or planetating movement
Plural working members or chambers
C418S179000
Reexamination Certificate
active
06213744
ABSTRACT:
FIELD OF THE INVENTION
A phased trochoidal rotary chamber device which can be used for compression and expansion of fluid, pumping of liquid, or as a hydraulic motor.
BACKGROUND OF THE INVENTION
In U.S. Pat. No. 5,769,619, applicants described and claimed a rotary device comprised of a housing comprising a curved inner surface in the shape of a trochoid and an interior wall, an eccentric mounted on a shaft disposed within said housing, a first rotor mounted on said eccentric shaft which is comprised of a first side and a second side, a first pin attached to said rotor and extending from said rotor to said interior wall of said housing, and a second pin attached to said rotor and extending from said rotor to said interior wall of such housing, and a third pin attached to said rotor and extending from said rotor to said interior wall of said housing. This rotary device also contains the following features: (1) a continuously arcuate track is disposed within said interior wall of said housing, wherein said continuously arcuate track is in the shape of an envoluted trochoid, (2) said first pin has a distal end which is disposed within said continuously arcuate track, (3) said second pin has a distal end which is disposed within said continuously arcuate track, (4) said third pin has a distal end which is disposed within said continuously arcuate track, (5) said distal end of said first pin is comprised of a shaft disposed within a first rotatable sleeve, (6) said distal end of said second pin is comprised of a shaft disposed within a second rotatable sleeve, said distal end of said third sleeve is comprised of a shaft disposed within a third rotatable sleeve, (7) said rotor is comprised of a multiplicity of apices, wherein each such apex forms a compliant seal with said curved inner surface, and wherein each such apex is comprised of a separate curved surface which is formed from a strip of material pressed into a recess, (8) said curved inner surface of said housing is generated from an ideal epictrochoidal curve and is outwardly recessed from said ideal epitrochoidal curve by a distance of from about 0.05 to about 5 times as great as the eccentricity of said eccentric, (9) the diameter of the distal end of each of said first pin and said second pin is from about 2 to about 4 times as great as said eccentricity of said eccentric, and (10) each of said first pin, said second pin, and said third pin extends from beyond said interior wall of said housing by from about 1 to about 2 times the diameter of each of said pins. The entire disclosure of this U.S. Pat. No. 5,769,619 is hereby incorporated by reference into this specification.
It is an object of this invention to provide a trochoidal rotary chamber device which is more durable, more reliable, and more efficient than the trochoidal rotary chamber device described and claimed in U.S. Pat. No. 5,769,619.
SUMMARY OF THE INVENTION
In accordance with this invention, there is provided a rotary device comprised of a housing with a side plate, a shaft disposed within said housing, a rotor mounted on said shaft, and a set of meshing gears, one with internal teeth attached to the rotor, and the other with external teeth attached to the side plate of the housing, both of such gears being concentric to the element they are attached to.
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patent: 5769619 (1998-06-01), Crvelin et al.
patent: 5947709 (1999-09-01), Koyama et al.
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Aquino Giovanni
Choroszylow Ewan
Greenwald Howard J.
Denion Thomas
Greenwald Howard J.
Greenwald & Basch LLP
Trieu Theresa
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