Patent US4810677A successfully refreshed from Google Patents.
US4810677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-insulating lining for a gas turbine
Assignee: Daimler Benz AG
•
Filing: 1987-11-12
•
Granted: 1989-03-07
•
Expires: 2007-11-12
Abstract
Abstract A heat-insulating lining for a gas turbine which consists of a mat formed of ceramic fibers that is provided on its side facing the hot gas with a metal-oxide-containing layer, especially Al 2 O 3 . The mat to be provided with the ceramic layer should possess a gross density of 350 to 450 kg/m 3 and the fibers in the mat which are in contact with the metal oxide-containing layer are to be predominantly so oriented that the longitudinal axis of the fibers forms an angle of 30° to 90° with the metal oxide-containing layer. It is preferred if the fibers form an approximately right angle with the metal oxide-containing layer. The thus made coated heat-insulating linings possess a good mechanical stability with respect to the hot gases as well as an adequate thermo-shock resistance.
Inventors
- 👤 Reinhard Heinze
- 👤 Klaus Morgenthaler
- 👤 Ines Maiwald
- 👤 Wolfgang Kroenert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:26
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/007; C; C04; C04B; C04B30/00; C04B30/02; F01; F01D; F01D25/00; F01D25/08; F01D25/14; F01D25/145; F01D25/24; F02; F02B; F02B77/00; F02B77/11; F02B77/13; F02C; F02C7/00; F02C7/24; F02K; F02K1/00; F02K1/78; F02K1/82; F02K1/822; F16; F16L; F16L59/00; F16L59/02; F16L59/026; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24124; Y10T428/26; Y10T428/266
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
89 words
A heat-insulating lining for a gas turbine, consisting of a mat formed from ceramic fibers which is provided on its side facing the hot gas with a metal oxide-containing layer, wherein the mat formed of ceramic fibers possesses a gross density of between 350 and 450 kg/m 3 , and wherein the fibers in the mat which are in contact with the metal oxide-containing layer are so oriented that the longitudinal axis of the fibers forms an angle of about 30° to about 90° with the metal oxide-containing layer.
Claim 2
Dependent Claim
89 words
A heat-insulating lining for a gas turbine, consisting of a mat formed from ceramic fibers which is provided on its side facing the hot gas with a metal oxide-containing layer, wherein the mat formed of ceramic fibers possesses a gross density of between 350 and 450 kg/m 3 , and wherein the fibers in the mat which are in contact with the metal oxide-containing layer are so oriented that the longitudinal axis of the fibers forms an angle of about 30° to about 90° with the metal oxide-containing layer.
Claim 3
Dependent Claim
18 words
A heat-insulating lining according to claim 1, in which the fiber layer consists of two partial fiber layers.
Claim 4
Dependent Claim
42 words
A heat-insulating lining according to claim 2, in which the fibers in the partial fiber layer in contact with the metal oxide-containing layer are so oriented that they extend at an angle with respect to the fibers inside the other partial layer.
Claim 5
Dependent Claim
24 words
A heat-insulating lining according to claim 3, wherein said partial fiber layers are connected with each other under interposition of a ceramic binder layer.
Claim 6
Dependent Claim
27 words
A heat-insulating lining according to claim 4, wherein the fibers in the other partial fiber layer are oriented at least approximately parallel to the metal oxide-containing layer.
Claim 7
Dependent Claim
24 words
A heat-insulating lining according to claim 2, wherein said partial fiber layers are connected with each other under interposition of a ceramic binder layer.
Claim 8
Dependent Claim
27 words
A heat-insulating lining according to claim 3, wherein the fibers in the other partial fiber layer are oriented at least approximately parallel to the metal oxide-containing layer.
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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |