US3820523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion chamber
Assignee: ANATECH Inc
•
Filing: 1973-03-08
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Granted: 1974-06-28
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Expires: 1993-03-08
Abstract
Abstract An insulator which may be ceramic or glass is bonded to the simple surfaces of an internal combustion engine combustion chamber by means of an intermediate layer of relatively elastic material which mediates the differential expansion between the insulator and the underlying combustion chamber supporting surfaces.
Inventors
- 👤 M Showalter
- 👤 S Rhine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:52
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/10; F02B; F02B23/00; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B3/00; F02B3/06; F02B77/00; F02B77/11; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
In an internal combustion engine having a combustion chamber with pressure supporting surfaces and wherein the pressure supporting surfaces are thermally insulated, the improvement comprising: a lining of insulating material on the pressure supporting surfaces, and a layer of elastomeric material between the insulating material and the pressure supporting surfaces to mediate differential thermal expansion between the insulating material and the combustion chamber pressure supporting surfaces.
Claim 2
Dependent Claim
66 words
In an internal combustion engine having a combustion chamber with pressure supporting surfaces and wherein the pressure supporting surfaces are thermally insulated, the improvement comprising: a lining of insulating material on the pressure supporting surfaces, and a layer of elastomeric material between the insulating material and the pressure supporting surfaces to mediate differential thermal expansion between the insulating material and the combustion chamber pressure supporting surfaces.
Claim 3
Dependent Claim
83 words
In an internal combustion engine having a combustion chamber with a piston forming one surface of the combustion chamber surfaces, said surfaces being pressure supporting surfaces, and wherein the pressure supporting surfaces of the combustion chamber are thermally insulated, the improvement comprising: a lining of insulating material on the pressure supporting surfaces, and a layer of elastomeric material between the insulating material and the pressure supporting surfaces to mediate differential thermal expansion between the insulating material and the combustion chamber pressure supporting surfaces.
Claim 4
Dependent Claim
83 words
In an internal combustion engine having a combustion chamber with a piston forming one surface of the combustion chamber surfaces, said surfaces being pressure supporting surfaces, and wherein the pressure supporting surfaces of the combustion chamber are thermally insulated, the improvement comprising: a lining of insulating material on the pressure supporting surfaces, and a layer of elastomeric material between the insulating material and the pressure supporting surfaces to mediate differential thermal expansion between the insulating material and the combustion chamber pressure supporting surfaces.
Claim 5
Dependent Claim
34 words
The invention as set forth in claim 2 and wherein the piston has a top and depending sidewalls, said top lining recessed to receive the lining of insulating material, the layer of elastometric material.
Claim 6
Dependent Claim
30 words
The invention as set forth in claim 2 wherein the piston has a top and said elastometric layer and insulating layer are secured across the entire top of said piston.
Claim 7
Dependent Claim
35 words
The invention as set forth in claim 4 and wherein the contact surface between said piston top and said insulating layer maintains said insulating material in a fixed position with respect to said piston top.
Claim 8
Dependent Claim
34 words
The invention as set forth in claim 2 and wherein adhesive means are provided for securing the insulating lining material to the elastomeric material and for securing the elastomeric material and the supporting surface.
Claim 9
Dependent Claim
24 words
The invention as set forth in claim 2 and wherein, a perforated turbulence barrier is supporting in the combustion chamber by the insulating material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |