US3817036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arcuate shaped heat transfer pipes
Assignee: United Stirling AB and Co
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Filing: 1972-08-25
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Granted: 1974-06-18
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Expires: 1992-08-25
Abstract
Abstract A hot gas Stirling type engine has a heater head comprising a plurality of arcuate shaped heat transfer pipes connected between regenerator and cylinder manifolds.
Inventors
- 👤 S Hakansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:08
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/055; F02G2244/00; F02G2255/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
A heater head arrangement for a hot gas engine comprising in combination, a plurality of high temperature working chambers, a plurality of regenerators, said chambers and regenerators alternately disposed side by side about a circular arrangement, first manifolds extending from said chambers, second manifolds extending from said regenators, said first and second manifolds having side-by-side vertical sections, a plurality of arcuate shaped heater pipes extending between and coupled into the adjacent vertical manifold sections to connect each working chamber to a regenerator to form thereby a vertical cylindrical arrangement of said pipes.
Claim 2
Dependent Claim
92 words
A heater head arrangement for a hot gas engine comprising in combination, a plurality of high temperature working chambers, a plurality of regenerators, said chambers and regenerators alternately disposed side by side about a circular arrangement, first manifolds extending from said chambers, second manifolds extending from said regenators, said first and second manifolds having side-by-side vertical sections, a plurality of arcuate shaped heater pipes extending between and coupled into the adjacent vertical manifold sections to connect each working chamber to a regenerator to form thereby a vertical cylindrical arrangement of said pipes.
Claim 3
Dependent Claim
31 words
An arrangement as defined in claim 1 including an engine part, and flexible means connecting said regenerators to said engine part to accommodate changes in dimension of said arcuate shaped pipes.
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |