Patent US4502809A successfully refreshed from Google Patents.
US4502809A
Expired / Lapsed
US
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Method and apparatus for controlling thermal growth
Assignee: Elliott Turbomachinery Co Inc
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Filing: 1981-08-31
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Granted: 1985-03-05
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Expires: 2001-08-31
Abstract
Abstract Differential thermal growth between joined flanged members is accommodated by making proximate pairs of axially extending sawcuts through the flange and into the casings to form elongated tabs which define sawcut springs. By joining the flanged members at the location of some of the sawcut springs, the springs deflect to permit differential thermal growth. Additionally, the flanged members can be maintained in a centered position, even under conditions of thermal growth, by centering the member by means of a plurality of circumferentially spaced jackscrews which engage the remainder of the sawcut springs.
Inventors
- 👤 Carl H. Geary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:24
CPC Classifications
F; F01; F01D; F01D25/00; F01D25/24; F01D25/26; F16; F16B; F16B2200/00; F16B2200/50; F16B2200/506; Y; Y10; Y10T; Y10T403/00; Y10T403/21
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
95 words
A method for securing a flanged member at the flange to a second member such as to accommodate differential thermal growth between the flanged and the second member including the steps of: providing a plurality of proximate pairs of sawcuts through the flange and into the flanged member to form a plurality of sawcut springs; and securing the flanged member to the second member at the locations of the flange portions of the sawcut springs whereby differential thermal expansion between the flanged member and the second member is accommodated by deflection of the spring member.
Claim 2
Independent Claim
95 words
A method for securing a flanged member at the flange to a second member such as to accommodate differential thermal growth between the flanged and the second member including the steps of: providing a plurality of proximate pairs of sawcuts through the flange and into the flanged member to form a plurality of sawcut springs; and securing the flanged member to the second member at the locations of the flange portions of the sawcut springs whereby differential thermal expansion between the flanged member and the second member is accommodated by deflection of the spring member.
Claim 3
Dependent Claim
44 words
The method of claim 1 further including the step of centering the flanged member by means of a plurality of supports engaging additional spring members whereby the flanged member and the second member secured thereto remain centered even though subject to differential thermal expansion.
Claim 4
Dependent Claim
72 words
Apparatus for controlling differential thermal growth comprising: a first member; a second member having a casing with a flange thereon; a plurality of pairs of proximate sawcuts in said flange and extending into said casing to define a plurality of spring members; means for securing the flange portions of said springs to said first member whereby differential thermal growth between said first and second members will cause deflections of said spring members.
Claim 5
Dependent Claim
72 words
Apparatus for controlling differential thermal growth comprising: a first member; a second member having a casing with a flange thereon; a plurality of pairs of proximate sawcuts in said flange and extending into said casing to define a plurality of spring members; means for securing the flange portions of said springs to said first member whereby differential thermal growth between said first and second members will cause deflections of said spring members.
Claim 6
Dependent Claim
64 words
The apparatus of claim 3 further comprising: a plurality of additional pairs of proximate sawcuts in said flange and extending into said casing to define a plurality of additional spring members; a plurality of centering means engaging said additional spring members at a distance from the flange portions whereby said first and second members are maintained centered even though subject to differential thermal expansion.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |