USRE30176E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirling cycle type thermal device
Assignee: Research Corp
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Filing: 1977-06-13
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Granted: 1979-12-25
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Expires: 1997-06-13
Abstract
Abstract A Stirling cycle thermal engine or refrigerating device wherein there is no primary mechanical connection between the displacer pistons and their associated power pistons, including various mechanical and pressure fluid means for varying the power output from or the power input to the device.
Inventors
- 👤 William T. Beale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:40
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/0435
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
259 words
piston..]. .[.4. A Stirling cycle type device comprising a pair of opposed displacer pistons, a rigid rod interconnecting the displacer pistons for synchronous motion of said displacer pistons, a cylinder for each of said displacer pistons, a regenerator for each displacer cylinder through which a gaseous operating medium flows during reciprocation of each displacer piston in its displacer cylinder, a power piston operatively associated with each of the displacer pistons and mechanically free to move independently in respect to its associated displacer piston, a cylinder for each of the power pistons, means connecting the pair of power pistons for at least partial synchronous motion of said power pistons, means for adding heat to or removing heat from each end of the displacer cylinders and means providing a power coupling and cooperative connective movement between the displacer pistons and the power pistons associated with said displacer pistons, said last means consisting solely of fluid communication conductors between one end of one power cylinder and one end of the displacer cylinder associated therewith and between one end of the other power cylinder and one end of the displacer cylinder associated with said other power cylinder and means for removing power from or adding power to the power pistons..]. .[.5. The invention defined in claim 4 wherein said last named means comprises a fluid conductor arrangement for directing a hydraulic fluid to and from each power cylinder of each of the power pistons in a zone opposite to the portion of said power cylinders in fluid communication with the respective ends of
Claim 2
Dependent Claim
220 words
their associated displacer cylinders..]. 6. .[.The invention defined in claim 4 including.]. .Iadd.A Stirling cycle type device comprising a pair of opposed displacer pistons, a rigid rod interconnecting the displacer pistons for synchronous motion of said displacer pistons, a cylinder for each of said displacer pistons, a regenerator for each displacer cylinder through which a gaseous operating medium flows during reciprocation of each displacer piston in its displacer cylinder, a power piston operatively associated with each of the displacer pistons and mechanically free to move independently in respect to its associated displacer piston, a cylinder for each of the power pistons, means connecting the pair of power pistons for at least partial synchronous motion of said power pistons, means for adding heat to or removing heat from each end of the displacer cylinders and means providing a power coupling and cooperative connective movement between the displacer pistons and the power pistons associated with said displacer pistons, said last means consisting solely of fluid communication conductors between one end of one power cylinder and one end of the displacer cylinder associated therewith and between one end of the other power cylinder and one end of the displacer cylinder associated with said other power cylinder, means for removing power from or adding power to the power pistons, and .Iaddend.stop means for varying
Claim 3
Dependent Claim
233 words
the length of travel of the displacer pistons in their cylinders. 7. .[.The invention defined in claim 4 including.]. .Iadd.A Stirling cycle type device comprising a pair of opposed displacer pistons, a rigid rod interconnecting the displacer pistons for synchronous motion of said displacer pistons, a cylinder for each of said displacer pistons, a regenerator for each displacer cylinder through which a gaseous operating medium flows during reciprocation of each displacer piston in its displacer cylinder, a power piston operatively associated with each of the displacer pistons and mechanically free to move independently in respect to its associated displacer piston, a cylinder for each of the power pistons, means connecting the pair of power pistons for at least partial synchronous motion of said power pistons, means for adding heat to or removing heat from each end of the displacer cylinders and means providing a power coupling and cooperative connective movement between the displacer pistons and the power pistons associated with said displacer pistons, said last means consisting solely of fluid communication conductors between one end of one power cylinder and one end of the displacer cylinder associated therewith and between one end of the other power cylinder and one end of the displacer cylinder associated with said other power cylinder, means for removing power from or adding power to the power pistons, and .Iaddend.pressure fluid means for varying the travel of said displacer
Claim 4
Dependent Claim
24 words
pistons in their cylinders. 8. The invention defined in claim 7 wherein the pressure fluid means for varying the travel of said displacer pistons
Claim 5
Dependent Claim
35 words
comprises the gaseous working fluid. 9. The invention defined in claim 7 wherein the pressure fluid means for varying the travel of the displacer pistons comprises hydraulic fluid associated with the power pistons of the
Claim 6
Dependent Claim
219 words
thermal device. 10. .[.The invention defined in claim 4 including.]. .Iadd.Stirling cycle type device comprising a pair of opposed displacer pistons, a rigid rod interconnecting the displacer pistons for synchronous motion of said displacer pistons, a cylinder for each of said displacer pistons, a regenerator for each displacer cylinder through which a gaseous operating medium flows during reciprocation of each displacer piston in its displacer cylinder, a power piston operatively associated with each of the displacer pistons and mechanically free to move independently in respect to its associated displacer piston, a cylinder for each of the power pistons, means connecting the pair of power pistons for at least partial synchronous motion of said power pistons, means for adding heat to or removing heat from each end of the displacer cylinders and means providing a power coupling and cooperative connective movement between the displacer pistons and the power pistons associated with said displacer pistons, said last means consisting solely of fluid communication conductors between one end of one power cylinder and one end of the displacer cylinder associated therewith and between one end of the other power cylinder and one end of the displacer cylinder associated with said other power cylinder, means for removing power from or adding power to the power pistons, and .Iaddend.adjustable mechanical stop means for limiting
Claim 7
Dependent Claim
264 words
the motion of said piston rod connecting the displacer pistons. .Iadd.11. A Stirling cycle type device comprising a displacer piston, a displacer cylinder zone, said displacer piston mounted for reciprocation in said displacer cylinder zone, a displacer piston rod connected at one end to said displacer piston and in fluid communication at the other end with a second zone, a power piston, a power cylinder, said power piston mounted for reciprocation in the power cylinder normally mechanically independent of the reciprocation of the displacer piston, a working fluid in said displacer cylinder zone, means creating a pressure differential between the displacer cylinder zone and said second zone adapted to act on the area of the piston rod in said second zone, said last named means including means for adding heat to or removing heat from each end of the displacer cylinder zone, means providing a power coupling between the displacer piston and the power piston consisting solely of fluid communication conductors between one end of the power cylinder and the displacer cylinder zone, wherein said second zone is sealed against the pressure in the displacer cylinder zone, and a spring acting on that end of the displacer piston rod which is arranged in the space sealed against the pressure of the displacer cylinder zone. .Iaddend. .Iadd.12. The Stirling cycle type device as defined in claim 11 further including a second spring arranged in the same space and acting on the power piston, the restoring force of the said springs predominating over the compressive force at the end of the expansion of the working fluid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |