US3656820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wear compensating seal
Assignee: Massey Ferguson Services NV
•
Filing: 1968-05-08
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Granted: 1972-04-18
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Expires: 1988-05-08
Abstract
Abstract A seal assembly for a bearing wherein two relatively rotatable annular matched members have planar face-to-face sealing contact surfaces resiliently urged together and one of the members is mounted for limited spherical rocking movement about a point on the sealing surface plane and on the axis of relative rotation between the members.
Inventors
- 👤 Pietro Pensa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:04
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/723; B; B62; B62D; B62D55/00; B62D55/08; B62D55/14; B62D55/15; F16C33/74; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/344; F16J15/38
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
73 words
In a rotary assembly having two relatively rotatable elements and a bearing therebetween, a sealing assembly for the bearing, comprising: a pair of sealing members relatively rotatable about an axis and having a planar sealing interface, means mounting one of the sealing members on one of the elements, and means mounting the other sealing member on the other element for limited rocking movement about a rocking point lying in the sealing interface plane.
Claim 2
Dependent Claim
73 words
In a rotary assembly having two relatively rotatable elements and a bearing therebetween, a sealing assembly for the bearing, comprising: a pair of sealing members relatively rotatable about an axis and having a planar sealing interface, means mounting one of the sealing members on one of the elements, and means mounting the other sealing member on the other element for limited rocking movement about a rocking point lying in the sealing interface plane.
Claim 3
Dependent Claim
17 words
The sealing assembly according to claim 1, including resilient means urging the sealing members into sealing engagement.
Claim 4
Dependent Claim
46 words
A sealing assembly according to claim 1, in which the said other sealing member has a part spherical surface adapted to cooperate with a complementary part spherical surface in its associated element, the center of the other sealing member part spherical surface is the rocking point.
Claim 5
Dependent Claim
17 words
A sealing assembly according to claim 3, in which the rocking point lies on the said axis.
Claim 6
Dependent Claim
62 words
A sealing assembly according to claim 2, in which the element mounting the said other sealing member has a part spherical surface in contact with a complementary part spherical surface of said other sealing member and means are provided to prevent relative rotation but permit rocking of said other member relative to the said element, the spherical center being the rocking point.
Claim 7
Dependent Claim
20 words
A sealing assembly according to claim 5, in which an additional sealing member is provided between the part spherical surfaces.
Claim 8
Dependent Claim
35 words
A sealing assembly according to claim 6, in which a groove is formed in the part spherical surface of the said element and the additional sealing member is an elastomeric O-ring located in the groove.
Claim 9
Dependent Claim
35 words
A sealing assembly according to claim 7, in which said groove is of sufficient width to aLlow rolling movement of at least a part of the O-ring during rocking movement between the part spherical surfaces.
Claim 10
Dependent Claim
33 words
A sealing assembly according to claim 5 in which the means to prevent rotation but permit rocking of the said one member relative to the said element comprises a pin and groove connection.
Claim 11
Dependent Claim
51 words
A sealing assembly according to claim 5, in which the one sealing member and its element have tapered surfaces and including a large elastomeric O-ring trapped between such surfaces to resiliently urge said one sealing member towards the said other sealing member and thereby provide a seal between the tapered surfaces.
References Cited (Backward Citations)
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Cited
US2758548A
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US2860895A
Cited
US3050310A
Cited
US3239232A
Cited
US3409306A
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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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |