Patent US4425699A successfully refreshed from Google Patents.
US4425699A
Expired / Lapsed
US
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Method of connecting two ringformed elements
Assignee: ITT Inc
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Filing: 1981-01-19
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Granted: 1984-01-17
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Expires: 2001-01-19
Abstract
Abstract A method of connecting a mechanical seal ring made of hard metal or ceramic to a supporting ring made of aluminum or stainless steel includes pressing the two rings against each other with such a force that the material of the supporting ring yields.
Inventors
- 👤 Dag E. V. Nordin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:47
CPC Classifications
B; B21; B21K; B21K25/00; F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3496; Y; Y10; Y10S; Y10S277/00; Y10S277/924; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/49908; Y10T29/49945
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
129 words
A method of connecting a mechanical seal ring of hard metal, ceramic or the like to a supporting ring of aluminum, stainless steel or some other relatively soft material, comprising the step of pressing the mechanical seal ring against the supporting ring with a power so strong that the material of the supporting ring is elastically and plastically deformed by the mechanical seal ring so that a good connection is obtained, wherein the mechanical seal ring before the pressing has a sealing surface smoother than 10 μm, preferably 1 μm, wherein a press tool is used for pressing said mechanical seal ring against the supporting ring, and wherein the surface of said press tool which presses against said mechanical seal ring is smoother than 10 μm, preferably 1 μm.
Claim 2
Independent Claim
129 words
A method of connecting a mechanical seal ring of hard metal, ceramic or the like to a supporting ring of aluminum, stainless steel or some other relatively soft material, comprising the step of pressing the mechanical seal ring against the supporting ring with a power so strong that the material of the supporting ring is elastically and plastically deformed by the mechanical seal ring so that a good connection is obtained, wherein the mechanical seal ring before the pressing has a sealing surface smoother than 10 μm, preferably 1 μm, wherein a press tool is used for pressing said mechanical seal ring against the supporting ring, and wherein the surface of said press tool which presses against said mechanical seal ring is smoother than 10 μm, preferably 1 μm.
Claim 3
Dependent Claim
31 words
A method according to claim 1, wherein the surface of said press tool which presses against said mechanical seal ring is made of a similar material as said mechanical seal ring.
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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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |