US3580590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bearing seal construction
Assignee: Torrington Co Ltd
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Filing: 1969-11-07
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Granted: 1971-05-25
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Expires: 1989-11-07
Abstract
Abstract The invention contemplates a laminated seal construction and method utilizing a flat annular sheet of flexible material, such as elastomeric material, laminated to a backing material, which at an axially thick portion defines a body, and which at an axially thin portion defines a seal member to be axially resilient deflected with respect to the body. The method of the invention calls for removing backing material after the laminating step, the removed material affording a remainder which meets all requirements as to concentricity, circumferential uniformity of action, and the like. The material-removing step may be so characterized as to provide a local region for axial flexure, radially spaced from the region of wiping contact with the bearing ring to which it is sealingly engaged.
Inventors
- 👤 John F Zotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:49
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3284; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16J15/34; F16J15/3436; F16J15/3456; F16C19/00; F16C19/02; F16C19/04; F16C19/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
152 words
A laminated seal for a bearing, comprising a ring-shaped flat lamination of flexible material laminated in a single radial plane to relatively stiff backing material, said backing material being axially relatively thick near one of the radial limits of said flexible material to define a body member, and said backing material being axially relatively thin near the other radial limit of said flexible material to define a seal member, whereby said body member and said seal member may be axially resiliently yieldably displaced with respect to each other to apply axial preload for sealed engagement of flexible material with a bearing surface, and also whereby circumferentially continuous and relatively stiff backing support is provided for the flexible material of said seal member at the region of seal engagement, and further whereby a relatively hard circumferential shield is presented externally of the sealing flexible material as a protection for the sealing flexible material.
Claim 2
Dependent Claim
152 words
A laminated seal for a bearing, comprising a ring-shaped flat lamination of flexible material laminated in a single radial plane to relatively stiff backing material, said backing material being axially relatively thick near one of the radial limits of said flexible material to define a body member, and said backing material being axially relatively thin near the other radial limit of said flexible material to define a seal member, whereby said body member and said seal member may be axially resiliently yieldably displaced with respect to each other to apply axial preload for sealed engagement of flexible material with a bearing surface, and also whereby circumferentially continuous and relatively stiff backing support is provided for the flexible material of said seal member at the region of seal engagement, and further whereby a relatively hard circumferential shield is presented externally of the sealing flexible material as a protection for the sealing flexible material.
Claim 3
Dependent Claim
28 words
The seal of claim 1, wherein the backing material of said body and seal members is radially continuous adjacent the radial plane of lamination to the flexible material.
Claim 4
Dependent Claim
41 words
The seal of claim 2, wherein the axially thinnest portion of the backing material is localized at the region of juncture of said body member with said seal member; thereby localizing, at substantially said region, the relative yieldability of said members.
Claim 5
Dependent Claim
71 words
The seal of claim 1, in which the backing material of said body member is radially continuous adjacent the radial plane of lamination to the flexible material, in which the backing material of said seal member is radially continuous adjacent the radial plane of lamination to the flexible material, and in which a localized annular region of the flexible material between said body and seal members is free of backing material.
Claim 6
Dependent Claim
46 words
The seal of claim 1, in which the thickness of backing material at said body member substantially exceeds the thickness of the flexible material, and in which the thickness of backing material at said seal member is substantially less than the thickness of the flexible material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |