Patent US3716245A successfully refreshed from Google Patents.
US3716245A
Expired / Lapsed
US
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Ring seal
Assignee: Sauer Sundstrand SpA
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Filing: 1970-03-04
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Granted: 1973-02-13
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Expires: 1990-03-04
Abstract
Abstract In a ring seal for effecting a seal between two opposed sealing faces, which may be plane or curved faces, one of the sealing faces is provided with a groove the opening from which faces the other of the sealing faces. In the groove there are located an annular rubber-elastic sealing element which is compressively pre-loaded and a locating element made of a material harder than that of the sealing element. On compression of the sealing element to a predetermined degree above that of the pre-load the sealing element urges the locking element partly out of the groove to abut the sealing face opposite the opening from the groove.
Inventors
- 👤 M Turolla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:06
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/12; F01C19/125; F16; F16J; F16J15/00; F16J15/16; F16J15/166; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
185 words
A ring seal arrangement for effecting a seal between two opposed plane parallel sealing faces only one of which is provided with a groove having a rectangular cross-section and having an opening facing the other, said seal arrangement comprising a. an annular rubber-elastic sealing element located in said groove and engaging each of the said sealing faces under an initial compressive pre-loading; b. at least one unsplit annular locking element made of rigid, non-deformable material also located in said groove and having a side facing the sealing element; c. said annular locking element having a wedge-like oblique surface formed on the side thereof facing the sealing element; d. the side of the locking element remote from the sealing element having a lateral surface at right angles to the parallel sealing faces displaceably arranged in contact with a side of the groove; e. the side of the groove which is in contact with the side of the locking element being at right angles with respect to the opposed sealing face; f. the height of the locking element being not greater than the depth of the groove.
Claim 2
Dependent Claim
185 words
A ring seal arrangement for effecting a seal between two opposed plane parallel sealing faces only one of which is provided with a groove having a rectangular cross-section and having an opening facing the other, said seal arrangement comprising a. an annular rubber-elastic sealing element located in said groove and engaging each of the said sealing faces under an initial compressive pre-loading; b. at least one unsplit annular locking element made of rigid, non-deformable material also located in said groove and having a side facing the sealing element; c. said annular locking element having a wedge-like oblique surface formed on the side thereof facing the sealing element; d. the side of the locking element remote from the sealing element having a lateral surface at right angles to the parallel sealing faces displaceably arranged in contact with a side of the groove; e. the side of the groove which is in contact with the side of the locking element being at right angles with respect to the opposed sealing face; f. the height of the locking element being not greater than the depth of the groove.
Claim 3
Dependent Claim
185 words
A ring seal arrangement for effecting a seal between two opposed plane parallel sealing faces only one of which is provided with a groove having a rectangular cross-section and having an opening facing the other, said seal arrangement comprising a. an annular rubber-elastic sealing element located in said groove and engaging each of the said sealing faces under an initial compressive pre-loading; b. at least one unsplit annular locking element made of rigid, non-deformable material also located in said groove and having a side facing the sealing element; c. said annular locking element having a wedge-like oblique surface formed on the side thereof facing the sealing element; d. the side of the locking element remote from the sealing element having a lateral surface at right angles to the parallel sealing faces displaceably arranged in contact with a side of the groove; e. the side of the groove which is in contact with the side of the locking element being at right angles with respect to the opposed sealing face; f. the height of the locking element being not greater than the depth of the groove.
Claim 4
Dependent Claim
185 words
A ring seal arrangement for effecting a seal between two opposed plane parallel sealing faces only one of which is provided with a groove having a rectangular cross-section and having an opening facing the other, said seal arrangement comprising a. an annular rubber-elastic sealing element located in said groove and engaging each of the said sealing faces under an initial compressive pre-loading; b. at least one unsplit annular locking element made of rigid, non-deformable material also located in said groove and having a side facing the sealing element; c. said annular locking element having a wedge-like oblique surface formed on the side thereof facing the sealing element; d. the side of the locking element remote from the sealing element having a lateral surface at right angles to the parallel sealing faces displaceably arranged in contact with a side of the groove; e. the side of the groove which is in contact with the side of the locking element being at right angles with respect to the opposed sealing face; f. the height of the locking element being not greater than the depth of the groove.
Claim 5
Dependent Claim
15 words
A ring seal according to claim 1, wherein the oblique surface is a plane surface.
Claim 6
Dependent Claim
21 words
A ring seal according to claim 1, wherein the cross-section of the locking element approximates to that of a rectangular trapezium.
Claim 7
Dependent Claim
32 words
A ring seal according to claim 1, wherein the sealing element in the compressively pre-loaded condition thereof is engaged without free play between a side of the groove and the locking element.
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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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |