US4059280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal ring assembly
Assignee: Hallite Seals International Ltd
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Filing: 1975-07-02
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Granted: 1977-11-22
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Expires: 1995-07-02
Abstract
Abstract A sealing ring assembly consists of (i) a preferably unreinforced sealing ring (ii) a harder supporting ring adjacent an axial side of the sealing ring and having lips extending axially to overlap the sealing ring at both its radially outer and inner peripheries, the radially inner lip being axially shorter than the radially outer one, and (iii) a bearing ring separate from the supporting ring. In a double-acting assembly there are two rings (ii) and (iii) arranged successively and respectively at each axial side of the sealing ring.
Inventors
- 👤 Brian Geoffrey Eastwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:54
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/166
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
268 words
A seal ring assembly comprising a. a sealing ring which is an annulus about a central axis, the sealing ring i. having a radially inner and a radially outer periphery ii. having a working surface at one of the radially inner and radially outer peripheries b. a supporting ring which is an annulus about a central axis and of generally the same radius as the sealing ring, the supporting ring i. being harder than the sealing ring and ii. having a radially inner and a radially outer periphery and iii. having a lip extending axially in one axial direction at the radially inner periphery and iv. having a lip extending axially in the one axial direction at the radially outer periphery, the lip at the one of the radially inner and outer peripheries which corresponds to that periphery of the sealing ring which has the said working surface extending axially further than the other said lip, and v. being separate from the sealing ring; and c. a bearing ring separate from the supporting ring and being harder than the sealing ring and having one radial periphery of substantially the same radius as the periphery of the sealing ring which provides the working surface whereby the rings may be placed axially side by side in a seal ring assembly with the sealing ring adjacent to the supporting ring and the supporting ring adjacent the bearing ring, the sealing ring being overlapped and supported at its radially inner and outer peripheries by the lips of the supporting ring, the working surface being supported by the lip of greater axial extension.
Claim 2
Dependent Claim
268 words
A seal ring assembly comprising a. a sealing ring which is an annulus about a central axis, the sealing ring i. having a radially inner and a radially outer periphery ii. having a working surface at one of the radially inner and radially outer peripheries b. a supporting ring which is an annulus about a central axis and of generally the same radius as the sealing ring, the supporting ring i. being harder than the sealing ring and ii. having a radially inner and a radially outer periphery and iii. having a lip extending axially in one axial direction at the radially inner periphery and iv. having a lip extending axially in the one axial direction at the radially outer periphery, the lip at the one of the radially inner and outer peripheries which corresponds to that periphery of the sealing ring which has the said working surface extending axially further than the other said lip, and v. being separate from the sealing ring; and c. a bearing ring separate from the supporting ring and being harder than the sealing ring and having one radial periphery of substantially the same radius as the periphery of the sealing ring which provides the working surface whereby the rings may be placed axially side by side in a seal ring assembly with the sealing ring adjacent to the supporting ring and the supporting ring adjacent the bearing ring, the sealing ring being overlapped and supported at its radially inner and outer peripheries by the lips of the supporting ring, the working surface being supported by the lip of greater axial extension.
Claim 3
Dependent Claim
40 words
A seal ring assembly as claimed in claim 1 wherein the working surface is at the radially outer periphery of the sealing ring, and the lip of greater axial extension is at the radially outer periphery of the supporting ring.
Claim 4
Dependent Claim
40 words
A seal ring assembly as claimed in claim 2 wherein a further said supporting and bearing ring are provided, the said supporting ring and further supporting ring being to lie axially adjacent respective axial side faces of the sealing ring.
Claim 5
Dependent Claim
40 words
A seal ring assembly as claimed in claim 1 wherein a further said supporting and bearing ring are provided, the said supporting ring and further supporting ring being to lie axially adjacent respective axial side faces of the sealing ring.
Claim 6
Dependent Claim
24 words
A seal ring assembly as claimed in claim 1 wherein the lip of the supporting ring of lesser axial extension is convex in cross-section.
Claim 7
Dependent Claim
25 words
A seal ring assembly as claimed in claim 1 wherein the lip of the supporting ring of lesser axial extension is concave in cross section.
Claim 8
Dependent Claim
17 words
A seal ring assembly as claimed in claim 1 wherein the rings are respectively of different materials.
Claim 9
Dependent Claim
28 words
A seal ring assembly as claimed in claim 1 wherein the sealing ring is a single acting ring and the assembly consists of the said three rings only.
Claim 10
Dependent Claim
88 words
In a seal ring assembly comprising a sealing ring, a separate support ring to be energized by the sealing ring and having a lip extending axially to the dynamic working surface of the sealing ring at one radial periphery thereof to protect it against extrusion and rolling, and a separate bearing ring, the improvement comprising a further lip projecting axially from the support ring to overlie the sealing ring at the other radial periphery thereof, the said further lip being of less axial length than the first-mentioned lip.
Claim 11
Dependent Claim
88 words
In a seal ring assembly comprising a sealing ring, a separate support ring to be energized by the sealing ring and having a lip extending axially to the dynamic working surface of the sealing ring at one radial periphery thereof to protect it against extrusion and rolling, and a separate bearing ring, the improvement comprising a further lip projecting axially from the support ring to overlie the sealing ring at the other radial periphery thereof, the said further lip being of less axial length than the first-mentioned lip.
Claim 12
Dependent Claim
35 words
The improvement as claimed in claim 9 wherein the sealing ring is symmetrical about a mid-circumferential plane thereof, and mirror-image support rings and bearing rings are provided at each axial side of the sealing ring.
References Cited (Backward Citations)
FR1193987A
Cited
AU267946A
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US2456356A
Cited
US2862736A
Cited
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Cited
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Cited
GB1289558A
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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) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |