Patent US2922469A successfully refreshed from Google Patents.
Patent US3682489A successfully refreshed from Google Patents.
US3682489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centering labyrinth seal
Assignee: Individual
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Filing: 1970-07-28
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Granted: 1972-08-08
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Expires: 1990-07-28
Abstract
Abstract A centering labyrinth seal for detachably connecting two parts such as cylinder and cylinder head with annular grooves in the surfaces along which the two parts are to be interconnected, said seal including an annular core member having connected thereto radially arranged annular webs with elastically or plastically and elastically deformable sealing lips adapted to engage wall portions of said grooves and to follow axial and radial deformations thereof.
Inventors
- 👤 Hans Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:29
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0887; F16J15/44; F16J15/447
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
190 words
In combination with two parts to be sealingly interconnected, especially cylinder and cylinder head, and respectively provided with annular groove means arranged in the surfaces along which said two parts are to be sealingly connected to each other, said groove means being in substantial alignment with each other, a profiled sealing ring comprising an annular core and a plurality of annular webs extending radially outwardly from said core respectively into the groove means of said two parts and continuously tending to hold said groove means in one part in alignment with the groove means in the other part to thereby center said two parts with regard to each other, the outer ends of said webs forming sealing lips sealingly engaging portions of the walls which define said groove means and being elastic so as to follow axial and radial deformations of said two parts as caused by pressure and temperature variations, the outer end of each of said webs being provided with two sealing lips extending in opposite directions with regard to each other and the sides of each of said sealing lips defining with each other an acute angle.
Claim 2
Dependent Claim
190 words
In combination with two parts to be sealingly interconnected, especially cylinder and cylinder head, and respectively provided with annular groove means arranged in the surfaces along which said two parts are to be sealingly connected to each other, said groove means being in substantial alignment with each other, a profiled sealing ring comprising an annular core and a plurality of annular webs extending radially outwardly from said core respectively into the groove means of said two parts and continuously tending to hold said groove means in one part in alignment with the groove means in the other part to thereby center said two parts with regard to each other, the outer ends of said webs forming sealing lips sealingly engaging portions of the walls which define said groove means and being elastic so as to follow axial and radial deformations of said two parts as caused by pressure and temperature variations, the outer end of each of said webs being provided with two sealing lips extending in opposite directions with regard to each other and the sides of each of said sealing lips defining with each other an acute angle.
Claim 3
Dependent Claim
18 words
A combination according to claim 1, in which said sealing lips engage said wall portions plastically and elastically.
Claim 4
Dependent Claim
41 words
A combination according to claim 1, in which said groove means in each of said parts includes oppositely inclined surfaces tapering in the direction toward the bottom surface of the respective groove means and sealingly engaging the respective adjacent seaLing lips.
Claim 5
Dependent Claim
30 words
A combination according to claim 3, in which said inclined surfaces form an angle of about 45* with the respective adjacent surface portion in which said groove means is provided.
Claim 6
Dependent Claim
29 words
A combination according to claim 3, in which the inclined surfaces of said groove means in each of said parts are separated from each other by an annular groove.
Claim 7
Dependent Claim
205 words
In combination with two parts to be sealingly interconnected, especially cylinder and cylinder head, and respectively provided with annular groove means arranged in the surfaces along which said two parts are to be sealingly connected to each other, said groove means being in substantial alignment with each other, a profiled sealing ring comprising an annular core and a plurality of annular webs extending radially outwardly from said core respectively into the groove means of said two parts and continuously tending to hold said groove means in one part in alignment with the groove means in the other part to thereby center said two parts with regard to each other, the outer ends of said webs forming sealing lips sealingly engaging portions of the walls which define said groove means and being elastic so as to follow axial and radial deformations of said two parts as caused by pressure and temperature variations, the outer end of each of said webs being provided with two sealing lips extending in opposite directions with regard to each other, the sides of each of said sealing lips defining with each other an acute angle, each two adjacent lips respectively pertaining to two adjacent webs defining with the latter a labyrinth.
Claim 8
Dependent Claim
205 words
In combination with two parts to be sealingly interconnected, especially cylinder and cylinder head, and respectively provided with annular groove means arranged in the surfaces along which said two parts are to be sealingly connected to each other, said groove means being in substantial alignment with each other, a profiled sealing ring comprising an annular core and a plurality of annular webs extending radially outwardly from said core respectively into the groove means of said two parts and continuously tending to hold said groove means in one part in alignment with the groove means in the other part to thereby center said two parts with regard to each other, the outer ends of said webs forming sealing lips sealingly engaging portions of the walls which define said groove means and being elastic so as to follow axial and radial deformations of said two parts as caused by pressure and temperature variations, the outer end of each of said webs being provided with two sealing lips extending in opposite directions with regard to each other, the sides of each of said sealing lips defining with each other an acute angle, each two adjacent lips respectively pertaining to two adjacent webs defining with the latter a labyrinth.
Claim 9
Dependent Claim
38 words
A combination according to claim 3, in which at least a portion of the radially outermost surfaces of said sealing lips is substantially parallel to said inclined surfaces and substantially perpendicular to the axes of the pertaining webs.
Claim 10
Dependent Claim
49 words
A combination according to claim 7, in which only a portion of the radially outermost surfaces of said sealing means engages said inclined surfaces while another portion of said radially outermost surfaces extends in nearly undistorted manner in spaced relationship to the walls of the respective adjacent groove means.
References Cited (Backward Citations)
US2898000A
Cited
FR1279545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |