US3717353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stator ring for face-type fluid seals
Assignee: Champlain Power Products Ltd
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Filing: 1969-07-18
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Granted: 1973-02-20
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Expires: 1989-07-18
Abstract
Abstract A state ring for face-type fluid seals on the back face of which there is formed a support annulus, which annulus serves to take up initial loading against the back face of the stator ring and to compensate for any unevenness in the face or its support, or unbalanced loading. The annulus also serves to overcome an overturning moment which develops in the stator ring of the facetype fluid seal in operation. The dimensions of the annulus are chosen with respect to its material so that initial force transmitted therethrough, when that initial force is not evenly distributed around the annulus, is above the yield point of the material but so that ultimate force transmission through the annulus after distribution of the same is below the yield point of the material.
Inventors
- 👤 J Rayfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:23
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3464; F16J15/3472
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
98 words
For use in a face-type fluid seal, a stator ring having a generally L-shaped cross-section and having formed on the back face thereof a support annulus upstanding therefrom, the back face being one of the faces on the inner side of the ''''L,'''' said annulus extending from said back face in an axial direction and having at least one notch formed therein in a radial direction; the width of said annulus being substantially smaller than the width of said back face and the height of said annulus being substantially smaller than the axial thickness of said stator ring.
Claim 2
Dependent Claim
98 words
For use in a face-type fluid seal, a stator ring having a generally L-shaped cross-section and having formed on the back face thereof a support annulus upstanding therefrom, the back face being one of the faces on the inner side of the ''''L,'''' said annulus extending from said back face in an axial direction and having at least one notch formed therein in a radial direction; the width of said annulus being substantially smaller than the width of said back face and the height of said annulus being substantially smaller than the axial thickness of said stator ring.
Claim 3
Dependent Claim
98 words
For use in a face-type fluid seal, a stator ring having a generally L-shaped cross-section and having formed on the back face thereof a support annulus upstanding therefrom, the back face being one of the faces on the inner side of the ''''L,'''' said annulus extending from said back face in an axial direction and having at least one notch formed therein in a radial direction; the width of said annulus being substantially smaller than the width of said back face and the height of said annulus being substantially smaller than the axial thickness of said stator ring.
Claim 4
Dependent Claim
98 words
For use in a face-type fluid seal, a stator ring having a generally L-shaped cross-section and having formed on the back face thereof a support annulus upstanding therefrom, the back face being one of the faces on the inner side of the ''''L,'''' said annulus extending from said back face in an axial direction and having at least one notch formed therein in a radial direction; the width of said annulus being substantially smaller than the width of said back face and the height of said annulus being substantially smaller than the axial thickness of said stator ring.
Claim 5
Dependent Claim
145 words
In a face-type fluid seal having a housing, a stator ring have a generally L-shaped cross-section and an opposing rotor ring within said housing and around a rotatable shaft, a high pressure region of fluid within said housing on one side of said seal and a low pressure region of fluid within said housing on the other side of said seal; said stator ring having a front face which opposes a face of said rotor ring, and a back face being one of the faces on the inner side of the ''''L,'''' the improvement comprising: a support annulus upstanding from said back face of said stator ring in an axial direction and having at least one notch formed therein in a radial direction, the height and width of said support annulus being substantially smaller than the axial thickness and width respectively of said stator ring.
Claim 6
Dependent Claim
145 words
In a face-type fluid seal having a housing, a stator ring have a generally L-shaped cross-section and an opposing rotor ring within said housing and around a rotatable shaft, a high pressure region of fluid within said housing on one side of said seal and a low pressure region of fluid within said housing on the other side of said seal; said stator ring having a front face which opposes a face of said rotor ring, and a back face being one of the faces on the inner side of the ''''L,'''' the improvement comprising: a support annulus upstanding from said back face of said stator ring in an axial direction and having at least one notch formed therein in a radial direction, the height and width of said support annulus being substantially smaller than the axial thickness and width respectively of said stator ring.
Claim 7
Dependent Claim
125 words
The combination of claim 2 wherein the height and width of said support annulus are chosen so that in the event there is uneven contact upon initial contact of said support annulus with a supporting face therefor formed in said housing, the force transmitted axially through said support annulus is above the yield point of the material thereof thereby causing distortion of said support annulus at the initial force-contact points; said distortion of said support annulus being continued along the length thereof so that the force transmitted therethrough is distributed more evenly along said length and the force per unit length is reduced until said force being transmitted axially through said support annulus throughout its length falls below the yield point of the material thereof.
References Cited (Backward Citations)
US2100220A
Cited
US2375085A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |