US4061345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal for a rotating shaft
Assignee: E Sarlin Oy AB
•
Filing: 1977-04-29
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Granted: 1977-12-06
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Expires: 1997-04-29
Abstract
Abstract Seal for the purpose of carrying a rotating shaft throught a wall and which comprises a rotating seal ring and a stationary seal ring abutting thereagainst, whereof one has been connected with the shaft and the other with the wall and whereof one is located at the end of a rubber bellows producing an axial sealing pressure. Within the wall of the rubber bellows there is at least one metal pin, which is positioned obliquely with reference to the shaft.
Inventors
- 👤 Rolf Lund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:31
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/36
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
Improvement in a seal for carrying a rotating shaft through a wall, comprising a rotating sealing ring and a stationary sealing ring abutting thereagainst, one of these two being connected with the shaft and the other with the wall and one of the two being located at the end of a rubber bellows producing an axial sealing pressure, wherein the improvement comprises that within the wall of the rubber bellows there is at least one metal pin, which is positioned obliquely with reference to the shaft.
Claim 2
Dependent Claim
86 words
Improvement in a seal for carrying a rotating shaft through a wall, comprising a rotating sealing ring and a stationary sealing ring abutting thereagainst, one of these two being connected with the shaft and the other with the wall and one of the two being located at the end of a rubber bellows producing an axial sealing pressure, wherein the improvement comprises that within the wall of the rubber bellows there is at least one metal pin, which is positioned obliquely with reference to the shaft.
Claim 3
Dependent Claim
22 words
Seal according to claim 1, characterized in that the main configuration of the rubber bellows is that of a single shell hyperboloid.
Claim 4
Dependent Claim
12 words
Seal according to claim 1, characterized in that the pins are straight.
Claim 5
Dependent Claim
27 words
Seal according to claim 1, characterized in that the number of metal pins is two and that they are located on opposite sides of the rubber bellows.
Claim 6
Dependent Claim
23 words
Seal according to claim 1, characterized in that the pins are located within the wall of the bellows slanting in the same direction.
Claim 7
Dependent Claim
22 words
Seal according to claim 1, characterized in that the pins are located within the wall of the bellows slanting in different directions.
Claim 8
Dependent Claim
24 words
Seal according to claim 1, characterized in that the pins have been connected with each other two and two to constitute a U-shaped body.
Claim 9
Dependent Claim
26 words
Seal according to claim 1, characterized in that the pins have been connected with each other two and two to constitute a body of rectangular shape.
Claim 10
Dependent Claim
18 words
Seal according to claim 7, characterized in that the pins have been made by bending from metal wire.
References Cited (Backward Citations)
US2077954A
Cited
US2753198A
Cited
US3160418A
Cited
US3372076A
Cited
US3165323A
Cited
US3370895A
Cited
US3975026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |