Patent US3713676A successfully refreshed from Google Patents.
US3713676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Predeformed rabbit joint
Assignee: General Electric Co
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Filing: 1971-05-07
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Granted: 1973-01-30
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Expires: 1991-05-07
Abstract
Abstract A rabbet joint and method of forming the rabbet joint, for connecting rotating components such as a turbine wheel and stub shaft, formed from different materials which have dissimilar coefficients of thermal expansion, whereby the component having a higher coefficient of thermal expansion is prestressed and elastically deformed by means of a plug insert, and then machined to fit the other component part.
Inventors
- 👤 L Carlstrom
- 👤 G Padgett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:42
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/06; F01; F01D; F01D5/00; F01D5/02; F01D5/025; F01D5/06; F01D5/066; F16B; F16B2200/00; F16B2200/50; F16B2200/506; Y; Y10; Y10T; Y10T403/00; Y10T403/21
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
118 words
A rabbet joint for connecting rotatable thermally dissimilar members comprising: a first rotatable member having a first end flange defining a cylindrical interior surface, a second rotatable member of a material having a higher coefficient of thermal expansion than said first member and having a second end flange with an axially extending lip thereon coaxial with said first member, a third plug member of material having a lower coefficient of thermal expansion than the second member and having a cylindrical exterior surface of greater unstressed outer diameter than the unstressed inner diameter of said lip, and means for connecting said first and second flanges together and holding said lip tightly engaged between said first and third member surfaces.
Claim 2
Dependent Claim
118 words
A rabbet joint for connecting rotatable thermally dissimilar members comprising: a first rotatable member having a first end flange defining a cylindrical interior surface, a second rotatable member of a material having a higher coefficient of thermal expansion than said first member and having a second end flange with an axially extending lip thereon coaxial with said first member, a third plug member of material having a lower coefficient of thermal expansion than the second member and having a cylindrical exterior surface of greater unstressed outer diameter than the unstressed inner diameter of said lip, and means for connecting said first and second flanges together and holding said lip tightly engaged between said first and third member surfaces.
Claim 3
Dependent Claim
118 words
A rabbet joint for connecting rotatable thermally dissimilar members comprising: a first rotatable member having a first end flange defining a cylindrical interior surface, a second rotatable member of a material having a higher coefficient of thermal expansion than said first member and having a second end flange with an axially extending lip thereon coaxial with said first member, a third plug member of material having a lower coefficient of thermal expansion than the second member and having a cylindrical exterior surface of greater unstressed outer diameter than the unstressed inner diameter of said lip, and means for connecting said first and second flanges together and holding said lip tightly engaged between said first and third member surfaces.
Claim 4
Dependent Claim
118 words
A rabbet joint for connecting rotatable thermally dissimilar members comprising: a first rotatable member having a first end flange defining a cylindrical interior surface, a second rotatable member of a material having a higher coefficient of thermal expansion than said first member and having a second end flange with an axially extending lip thereon coaxial with said first member, a third plug member of material having a lower coefficient of thermal expansion than the second member and having a cylindrical exterior surface of greater unstressed outer diameter than the unstressed inner diameter of said lip, and means for connecting said first and second flanges together and holding said lip tightly engaged between said first and third member surfaces.
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |