Patent US3846899A successfully refreshed from Google Patents.
US3846899A
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A method of constructing a labyrinth seal
Assignee: General Electric Co
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Filing: 1974-01-30
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Granted: 1974-11-12
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Expires: 1994-01-30
Abstract
Abstract A labyrinth seal of the variety used with a rotatable shaft and a coaxial shroud spaced from the shaft is provided with replaceable tooth segments. In one form, the segments are disposed within a groove circumscribing the shaft, the groove having an overhanging shoulder, and the base portions of the tooth segments partially underlying the shoulder. A retaining metal deposit is applied to the base portions within the groove. Replacement of tooth segments is accomplished by removing the retaining metal deposit, removing worn tooth segments and replacing them with new tooth segments.
Inventors
- 👤 D Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:11
CPC Classifications
F; F01; F01D; F01D11/00; F01D11/02; F16; F16J; F16J15/00; F16J15/44; F16J15/445; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49719; Y10T29/49826; Y10T29/49888
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
A method for constructing a labyrinth seal between relatively rotating members, said method comprising the steps of: positioning a tooth segment having a base portion in cooperation with a first of said relatively rotating members; and disposing a retaining deposit upon said base portion for securing said tooth segment upon said first member.
Claim 2
Independent Claim
53 words
A method for constructing a labyrinth seal between relatively rotating members, said method comprising the steps of: positioning a tooth segment having a base portion in cooperation with a first of said relatively rotating members; and disposing a retaining deposit upon said base portion for securing said tooth segment upon said first member.
Claim 3
Dependent Claim
33 words
The method of claim 1 further including the steps of: forming a locator member upon said first member; and bringing said base portion of said tooth segment into cooperation with said locator member.
Claim 4
Independent Claim
61 words
A method for constructing a labyrinth seal between a rotatable shaft and an encircling shroud coaxial with and spaced from the shaft, said method comprising the steps of: defining a groove substantially circumscribing the shaft; positioning within said groove a plurality of radially extending tooth segments having base portions; and disposing a retaining deposit over said base portions within said groove.
Claim 5
Independent Claim
61 words
A method for constructing a labyrinth seal between a rotatable shaft and an encircling shroud coaxial with and spaced from the shaft, said method comprising the steps of: defining a groove substantially circumscribing the shaft; positioning within said groove a plurality of radially extending tooth segments having base portions; and disposing a retaining deposit over said base portions within said groove.
Claim 6
Dependent Claim
53 words
The method of claim 3 wherein: said defining of the groove in the shaft includes forming an overhanging shoulder along one edge of the groove; and said positioning of said tooth segments within said groove includes disposing the base portions of said segments in a position at least partially underlying said overhanging shoulder.
Claim 7
Independent Claim
69 words
A method for replacing a worn tooth segment of a labyrinth seal wherein the segment has disposed upon its base a retaining deposit, said method comprising the steps of: removing the deposit from the base portion of said worn tooth segment; removing said worn segment; positioning a new tooth segment, including a base portion; and disposing a retaining deposit of metal over the base portion of said new segment.
Claim 8
Independent Claim
69 words
A method for replacing a worn tooth segment of a labyrinth seal wherein the segment has disposed upon its base a retaining deposit, said method comprising the steps of: removing the deposit from the base portion of said worn tooth segment; removing said worn segment; positioning a new tooth segment, including a base portion; and disposing a retaining deposit of metal over the base portion of said new segment.
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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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |