Rotary positive displacement device

• US 5,431,551 A
• Filed: 09/02/1994
• Issued: 07/11/1995
• Est. Priority Date: 06/17/1993
• Status: Expired due to Term

• Current Assignee: Corinne M. Aquino, Excelsior Research Group, Inc., Howard J. Greenwald
• Original Assignee: Ewan Choroszylow, Giovanni Aquino
• Inventors: Choroszylow, Ewan, Aquino, Giovanni
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): FREAY, CHARLES GRANT
• Application Number:
  US08/300,787
• Time in Patent Office: 312 Days
• Field of Search: 418/61.1, 418/61.2, 418/179, 418/186, 123/242
• US Class Current: 418/61.2
• CPC Class Codes: F01C 1/22 of internal-axis type with equidirectional movement of co-operating members at the points of engagement, or with one of the co-operating members being stationary, the inner member having more teeth or tooth- equivalents than the outer member
• CPC Class Codes: F02B 2053/005 Wankel engines
• CPC Class Codes: F02B 53/00 Internal-combustion aspects of rotary-piston or oscillating-piston engines internal-combustion aspects of rotary pistons or outer members for co-operation therewith F02B55/00
• CPC Class Codes: F02B 55/00 Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
• CPC Class Codes: F02B 55/02 Pistons
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A rotary device containing a housing having a curved inner surface with a profile equidistant from an trochoidal curve, an eccentric mounted on a shaft disposed within the housing, a rotor mounted on the eccentric shaft which contains at least three intersecting faces and a partial bore located at the intersection of adjacent faces, and at least three rollers rotatably mounted within the partial bores of the rotor.

Claims

1. A rotary device comprised of a housing comprising a curved inner surface with a profile equidistant from a trochoidal curve, 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, a second side, and a third side, a first partial bore disposed at the intersection of said first side and said second side, a second partial bore disposed at the intersection of said second side and said third side, a third partial bore disposed at the intersection of said third side and said first side, a first solid roller disposed and rotatably mounted within said first partial bore, a second solid roller disposed and rotatably mounted within said second partial bore, and a third solid roller disposed and rotatably mounted within said third partial bore wherein:

(a) said rotor is comprised of a front face, a back face, said first side, said second side, and said third side, wherein;

1. a first opening is formed between and communicates between said front face and said first

side,

2. a second opening is formed between and communicates between said back face and said first side, wherein each of said first opening and said second opening is substantially equidistant and symmetrical between said first partial bore and said second partial bore,

3. a third opening is formed between and communicates between said front face and said second side,

4. a fourth opening is formed between and communicates between said back face and said second side, wherein each of said third opening and said fourth opening is substantially equidistant and symmetrical between said second partial bore and said third partial bore,

5. a fifth opening is formed between and communicates between said front face and said third side, and

6. a sixth opening is formed between and communicates between said back face and said third side, wherein each of said fifth opening and said sixth opening is substantially equidistant and symmetrical between said third partial bore and said first partial bore;

(b) each of said first partial bore, said second partial bore, and said third partial bore is comprised of a centerpoint which, as said rotary device rotates, moves along said trochoidal curve;

(c) each of said first opening, said second opening, said third opening, said fourth opening, said fifth opening, and said sixth opening has a substantially U-shaped cross-sectional shape defined by a first linear side, a second linear side, and an arcuate section joining said first linear side and said second linear side, wherein;

1. said first linear side and said second linear side are disposed with respect to each other at an angle of less than ninety degrees, and

2. said substantially U-shaped cross sectional shape has a depth which is at least equal to its width;

(d) the diameter of said first solid roller is equal to the diameter of said second solid roller, and the diameter of said second solid roller is equal to the diameter of said third solid roller;

(e) the widths of each of said first opening, said second opening, said third opening, said fourth opening, said fifth opening, and said sixth opening are substantially the same, and the width of each of said openings is less than the diameter of said first solid roller; and

(f) each of said first side, said second side, and said third side has substantially the same geometry and size and is a composite shape comprised of a first section and a second section, wherein said first section has a shape which is different from said second section.

2. A rotary device comprised of a housing comprising a curved inner surface with a profile equidistant from a trochoidal curve, 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, a second side, and a third side, a first partial bore disposed at the intersection of said first side and said second side, a second partial bore disposed at the intersection of said second side and said third side, a third partial bore disposed at the intersection of said third side and said first side, a first solid roller disposed and rotatably mounted within said first partial bore, a second solid roller disposed and rotatably mounted within said second partial bore, and a third solid roller disposed and rotatably mounted within said third partial bore wherein:

(a) said rotor is comprised of a front face, a back face, said first side, said second side, and said third side, wherein;

1. a first opening is formed between and communicates between said front face and said first side,

2. a second opening is formed between and communicates between said back face and said first side, wherein each of said first opening and said second opening is substantially equidistant and symmetrical between said first partial bore and said second partial bore,

3. a third opening is formed between and communicates between said front face and said second side,

4. a fourth opening is formed between and communicates between said back face and said second side, wherein each of said third opening and said fourth opening is substantially equidistant and symmetrical between said second partial bore and said third partial bore,

5. a fifth opening is formed between and communicates between said front face and said third side, and

6. a sixth opening is formed between and communicates between said back face and said third side, wherein each of said fifth opening and said sixth opening is substantially and equidistant and symmetrical metrical between said third partial bore and said first partial bore;

(b) each of said first partial bore, said second partial bore, and said third partial bore is comprised of a centerpoint which, as said rotary device rotates, moves along said trochoidal curve;

(c) the diameter of said first solid roller is equal to the diameter of said second solid roller, and the diameter of said second solid roller is equal to the diameter of said third solid roller;

(d) the widths of each of said first opening, said second opening, said third opening, said fourth opening, said fifth opening, and said sixth opening are substantially the same, and the width of each of said openings is less than the diameter of said first solid roller; and

(e) each of said first side, said second side, and said third side has substantially the same geometry and size and is a composite shape comprised of a first section and a second section, wherein said first section has a shape which is different from said second section.

3. A rotary device comprised of a housing comprising a curved inner surface with a profile equidistant from a trochoidal curve, 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, a second side, a third side, and a fourth side, a first partial bore disposed at the intersection of said first side and said second side, a second partial bore disposed at the intersection of said second side and said third side, a third partial bore disposed at the intersection of said third side and said fourth side, and a fourth partial bore disposed at the intersection of said fourth side and said first side, a first solid roller disposed and rotatably mounted within said first partial bore, a second solid roller disposed and rotatably mounted within said second partial bore, and a third solid roller disposed and rotatably mounted within said third partial bore, and a fourth solid roller disposed and rotatably mounted within said fourth partial bore, wherein:

(a) said rotor is comprised of a front face, a back face, said first side, said second side, said third side, and said fourth side, wherein;

1. a first opening is formed between and communicates between said front face and said first side,

2. a second opening is formed between and communicates between said back face and said first side, wherein each of said first opening and said second opening is substantially equidistant and symmetrical between said first partial bore and said second partial bore,

3. a third opening is formed between and communicates between said front face and said second side,

4. a fourth opening is formed between and communicates between said back face and said second side, wherein each of said third opening and said fourth opening is substantially equidistant and symmetrical between said second partial bore and said third partial bore,

5. a fifth opening is formed between and communicates between said front face and said third side,

6. a sixth opening is formed between and communicates between said back face and said third side, wherein each of said fifth opening and said sixth opening is substantially equidistant and symmetrical between said third partial bore and said fourth partial bore,

7. a seventh opening is formed between and communicates between said front face and said fourth side, and

8. a eighth opening is formed between and communicates between said back face and said fourth side, wherein each of said seventh opening and said eighth opening is substantially equidistant and symmetrical between said fourth partial bore and said first partial bore;

(b) each of said first partial bore, said second partial bore, said third partial bore, and said fourth partial bore is comprised of a centerpoint which, as said rotary device rotates, moves along said trochoidal curve;

(c) the diameter of said first solid roller is equal to the diameter of said second solid roller, the diameter of said second solid roller is equal to the diameter of said third solid roller, and the diameter of said third solid roller is equal to the diameter of said fourth solid roller;

(d) the widths of each of said first opening, said second opening, said third opening, said fourth opening, said fifth opening, said sixth opening, said seventh opening, and said eighth opening are substantially the same, and the width of each of said openings is less than the diameter of said first solid roller; and

(e) each of said first side, said second side, said third side, and said fourth side has substantially the same geometry and size and is a composite shape comprised of a first section and a second section, wherein said first section has a shape which is different from said second section.

4. The rotary device as recited in claim 3, wherein said trochoidal curve is a hypotrochoidal curve.

5. The rotary device as recited in claim 3, wherein said trochoidal curve is an epitrochoidal curve.

6. The rotary device as recited in claim 5, wherein said housing is an integral structure which consists essentially of steel.

7. The rotary device as recited in claim 5, wherein said eccentric is integrally connected to said shaft.

8. The rotary device as recited in claim 5, wherein said shaft has a substantially cylindrical shape.

9. The rotary device as recited in claim 5, wherein said rotor is comprised of a body and a bore centrally disposed within said body.

10. The rotary device as recited in claim 9, wherein said device is comprised of a bearing disposed between said eccentric and said bore.

11. The rotary device as recited in claim 5, wherein each of said first roller, said second roller, said third roller, and said fourth roller consists essentially of a fiber-reinforced polymeric material.

12. The rotary device as recited in claim 11, wherein said fiber is a nylon fiber.

13. The rotary device as recited in claim 12, wherein said nylon is derived from p-phenyhlenediamine and terephthaloyl chloride.

14. The rotary device as recited in claim 5, wherein said rotor has a substantially rectilinear shape.

15. The rotary device as recited in claim 5, wherein at least one of said first solid roller, said second solid roller, and said third roller, and said fourth solid roller is comprised of an end with concentric grooves therein.

16. The rotary device as recited in claim 5, wherein at least one of said first solid roller, said second solid roller, said third solid roller, and said fourth solid roller is comprised of an end with spiral grooves therein.

17. The rotary device as recited in claim 5, wherein said device is operatively connected to an electric motor.

18. The rotary device as recited in claim 5, wherein said device is operatively connected to a combustion engine.