Patent US3822552A successfully refreshed from Google Patents.
US3822552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe configuration for hot gas engine
Assignee: United Stirling AB and Co
•
Filing: 1973-03-15
•
Granted: 1974-07-09
•
Expires: 1993-03-15
Abstract
Abstract A Stirling cycle type hot gas engine passes working gas from cylinders to regenerators through pipes which are exposed to heated combustion gases. These pipes are arcuately shaped and disposed with centers along a common horizontal straight line to permit placing a combustion chamber at the end for directing the combustion gases along the line.
Inventors
- 👤 J Palmgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:25
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/055; F02G2244/00; F02G2244/02; F02G2244/06; F02G2244/10; F02G2244/50; F02G2255/00; F02G2270/00; F02G2270/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
A multi-cylinder hot gas engine of the type in which heat is supplied to charges of working gas through pipes connecting the cylinders with regenerators, characterized in that said pipes are arcuately shaped and are in rows or groups in each of which the pipes are identical and disposed in parallel vertical planes and have their centers of curvature disposed along a common horizontal straight line and including means passing combustion gases unidirectionally following said straight line.
Claim 2
Dependent Claim
77 words
A multi-cylinder hot gas engine of the type in which heat is supplied to charges of working gas through pipes connecting the cylinders with regenerators, characterized in that said pipes are arcuately shaped and are in rows or groups in each of which the pipes are identical and disposed in parallel vertical planes and have their centers of curvature disposed along a common horizontal straight line and including means passing combustion gases unidirectionally following said straight line.
Claim 3
Dependent Claim
65 words
A hot gas engine according to claim 1 and of the double-acting type having at least four cylinders disposed in a V with pistons working through piston rods on a single crank-shaft, comprising two burners producing combustion gases giving off heat by passing between the pipes connecting the cylinders with the regenerators, these pipes being at the boundaries of one or two cylindrical tunnel-like spaces.
Claim 4
Dependent Claim
23 words
A hot gas engine according to claim 2, wherein the said tunnel-like spaces are two in number and are parallel to each other.
Claim 5
Dependent Claim
37 words
A hot gas engine according to claim 1, characterized in that said pipes connecting the cylinders and the regenerators extend over an arc of between 150* and 180* and extend upwards and downwards from horizontally extending manifolds.
Claim 6
Dependent Claim
32 words
A hot gas engine according to claim 4, characterized in that said manifolds are arranged in pairs and that the manifolds in each pair contain gas belonging to separate working gas charges.
Claim 7
Dependent Claim
75 words
A hot gas engine comprising a plurality of cylinders, associated regenerators for each cylinder and pipes passing working gas between each cylinder to its regenerator, characterized in that all said pipes are arcuately shaped and placed in at least one row having a common center passageway defined by the centers of the arcuate shape and extending along a linear path, and combustion chamber means disposed to direct combustion gases along said path through said passageways.
Claim 8
Dependent Claim
75 words
A hot gas engine comprising a plurality of cylinders, associated regenerators for each cylinder and pipes passing working gas between each cylinder to its regenerator, characterized in that all said pipes are arcuately shaped and placed in at least one row having a common center passageway defined by the centers of the arcuate shape and extending along a linear path, and combustion chamber means disposed to direct combustion gases along said path through said passageways.
Claim 9
Dependent Claim
41 words
An engine as defined in claim 6, wherein the pipes are all confined in a single row with the linear path constituting a straight line and the combustion chamber means comprises a single burner disposed at one end of the passageway.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |