US3586096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine heat exchanging system using flexible locating members for torque transmission
Assignee: Ford Motor Co
•
Filing: 1968-08-29
•
Granted: 1971-06-22
•
Expires: 1988-08-29
Abstract
Abstract A porous ceramic regenerator core its in the shape of a 12-sided regular polygon is surrounded by a metal ring gear having gear teeth on its exterior surface. Locating members transmit driving torque from the ring gear to the core while permitting the core to move radially and axially relative to the ring gear. Narrow slots can be cut into the outer edge of the ceramic core to relieve thermally induced stresses.
Inventors
- 👤 Arthur F Mclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:27
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/048; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19893; Y10T74/19907; Y10T74/19921
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
168 words
A heat exchanging system for a gas turbine engine comprising a regenerator core mounted rotatably in said engine, said core having a ceramic interior portion porous to gases flowing essentially parallel to the core rotational axis, the exterior surface of said core having a plurality of flat portions thereon, an annular driving means fitting loosely around said core, the interior surface of said driving meAns having corresponding flat portions formed thereon, and a plurality of locating members corresponding numerically to said plurality of flat portions and means for coupling said locating members to said driving means, one of said locating members being positioned between each flat portion of said core and each flat portion of said driving means, said locating members being leaf springs folded to exert forces urging the driving means axially away from the core, said locating members permitting slight relative radial and axial movement while preventing significant tangential movement between said core and said locating members and between said locating members and said driving means.
Claim 2
Dependent Claim
168 words
A heat exchanging system for a gas turbine engine comprising a regenerator core mounted rotatably in said engine, said core having a ceramic interior portion porous to gases flowing essentially parallel to the core rotational axis, the exterior surface of said core having a plurality of flat portions thereon, an annular driving means fitting loosely around said core, the interior surface of said driving meAns having corresponding flat portions formed thereon, and a plurality of locating members corresponding numerically to said plurality of flat portions and means for coupling said locating members to said driving means, one of said locating members being positioned between each flat portion of said core and each flat portion of said driving means, said locating members being leaf springs folded to exert forces urging the driving means axially away from the core, said locating members permitting slight relative radial and axial movement while preventing significant tangential movement between said core and said locating members and between said locating members and said driving means.
Claim 3
Dependent Claim
49 words
The system of claim 1 in which the core has a groove in its exterior cylindrical surface and said flat portions on the core are located at the bottom of the groove, the portion of said leaf springs contacting the core being narrower than the width of said groove.
Claim 4
Dependent Claim
64 words
The system of claim 2 in which the core rests on a substantially circular ceramic inner housing having a diametrical wall dividing said inner housing into two semicircular passages, said inner housing being surrounded by an outer housing forming an annular space surrounding said core and driving means assembly, said annular space communicating with a passage supplying relatively cool air to the regenerator core.
Claim 5
Dependent Claim
22 words
The system of claim 3 in which the driving means is a metal ring gear having gear teeth on its exterior surface.
Claim 6
Dependent Claim
31 words
The system of claim 1 in which the core has a groove in its exterior surface and said flat portions on the core are located at the bottom of the groove.
Claim 7
Dependent Claim
64 words
The system of claim 1 in which the core rests on a substantially circular ceramic inner housing having a diametrical wall dividing said inner housing into two semicircular passages, said inner housing being surrounded by an outer housing forming an annular space surrounding said core and ring gear assembly, said annular space communicating with a passage supplying relatively cool air to the regenerator core.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |