Patent US3890785A successfully refreshed from Google Patents.
US3890785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stirling cycle engine with common heat exchanger housing
Assignee: United Stirling AB and Co
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Filing: 1973-02-16
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Granted: 1975-06-24
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Expires: 1993-02-16
Abstract
Abstract A heat insulated chamber is provided for commonly housing a plurality of burner units of a Stirling cycle hot gas engine. A heat exchanger within the chamber preheats the combustion air. Cylinders are disposed so that cold gas connecting ducts need not cross and so that the elements may have common shapes.
Inventors
- 👤 Bo Goran Torsten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:51
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/055; F02G2244/00; F02G2244/50; F02G2255/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
66 words
A multi-cylinder double-acting Stirling cycle hot gas engine of compact V-configuration having a single crank shaft comprising in combination, eight cylinders each with adjacent regeneratorcooler units arranged in two lines of four, means connecting each line of cylinders to contain gas charges circulating only within the respective line of four cylinders, and a plurality of burner units each disposed to heat a plurality of said cylinders.
Claim 2
Dependent Claim
66 words
A multi-cylinder double-acting Stirling cycle hot gas engine of compact V-configuration having a single crank shaft comprising in combination, eight cylinders each with adjacent regeneratorcooler units arranged in two lines of four, means connecting each line of cylinders to contain gas charges circulating only within the respective line of four cylinders, and a plurality of burner units each disposed to heat a plurality of said cylinders.
Claim 3
Dependent Claim
23 words
An engine as defined in claim 1 having four burner units and corresponding sets of heater pipes arranged in a substantially square configuration.
Claim 4
Dependent Claim
25 words
An engine as defined in claim 1 having a heat exchanger in said housing disposed to vertically overlap said cylinders to thereby restrict engine height.
Claim 5
Dependent Claim
50 words
An engine as defined in claim 1 having a common heat insulated housing for all said burner units, a heat exchanger in said housing, means passing combustion air through said heat exchanger and means passing combustion gases through said housing and said heat exchanger to thereby preheat said combustion air.
Claim 6
Dependent Claim
52 words
A hot gas engine according to claim 1 with a crank-shaft and regenerator cooler units for each cylinder having structure arranging the parts so that a plane perpendicular to the crank-shaft of the engine and passing through the axes of two cylinders will also pass through the axes of two regenerator-cooler units.
Claim 7
Dependent Claim
55 words
A hot gas engine according to claim 1, characterized in that a plane perpendicular to the engine crank-shaft contains alternating cylinders and regenerator-cooler units angularly spaced, and that the cyliNder axes are located in four angularly spaced planes containing the axis of the crank-shaft, each of the said planes containing alternating cylinders and regenerator-cooler units.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |