US3556539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing means for ball or roller bearings
Assignee: SKF Industrie SpA
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Filing: 1968-08-15
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Granted: 1971-01-19
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Expires: 1988-08-15
Abstract
Abstract A seal for antifriction bearings in the form of an annular washer includes; an outer edge, shaped to be deformed upon insertion into a race groove, a stiff intermediate section, and a tapered inner portion for cooperation with the other bearing race. The seal is formed of homogenous resilient material. The seal includes one or more axially extending annular projections between the outer edge and intermediate section which reinforces the connecting zone between the outer edge and intermediate section.
Inventors
- 👤 Dino Senigalliesi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:59
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3248; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/7816; F16C33/783; F16C33/784; F16C33/7843; F16C33/7853
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
326 words
A seal for antifriction bearings, the combination comprising; a bearing having an outer race ring with an inner peripheral groove of substantially rectangular cross section located between an axially extending outer cylindrical surface of a diameter less than the diameter of the groove bottom and an axially extending inner cylindrical surface having a diameter less than the diameter of said axially extending outer surface, thereby defining a flat annular radially extending abutment surface facing towards the outside of the bearing and further having an inner race ring with an annular seating of curved cross section, an annular sealing washer made of homogenous resilient material closing the space between the said outer and inner race rings, said sealing washer comprising an intermediate annular flat body portion having a radially extending outer annular edge inserted, with resilient deformation, into said peripheral groove in the outer race ring, and further having a tapered inner lip engaging said annular seating in said inner race ring, said outer edge being formed with an annular bead of circular cross section extending circumferentially about said outer edge in a continuous uninterrupted manner, the circular cross section of the bead being of a diameter such that when said annular bead is inserted in said peripheral groove, there is provided a plurality of spaced apart sealing points between the walls of said groove and the surface of said bead, first and second axially extending annular projections integral with said annular washer and positioned between the outer edge and said intermediate portion, said first and second annular projections being coaxial with said washer and protruding axially from the inner face of the washer, said first annular projection bearing in sealing engagement against said radially extending abutment surface, and said second axially extending annular projection being positioned within and closely adjacent to said axially extending inner cylindrical surface to insure the accurate radial centering of said annular sealing washer in said bearing to thereby seal said bearing.
Claim 2
Dependent Claim
326 words
A seal for antifriction bearings, the combination comprising; a bearing having an outer race ring with an inner peripheral groove of substantially rectangular cross section located between an axially extending outer cylindrical surface of a diameter less than the diameter of the groove bottom and an axially extending inner cylindrical surface having a diameter less than the diameter of said axially extending outer surface, thereby defining a flat annular radially extending abutment surface facing towards the outside of the bearing and further having an inner race ring with an annular seating of curved cross section, an annular sealing washer made of homogenous resilient material closing the space between the said outer and inner race rings, said sealing washer comprising an intermediate annular flat body portion having a radially extending outer annular edge inserted, with resilient deformation, into said peripheral groove in the outer race ring, and further having a tapered inner lip engaging said annular seating in said inner race ring, said outer edge being formed with an annular bead of circular cross section extending circumferentially about said outer edge in a continuous uninterrupted manner, the circular cross section of the bead being of a diameter such that when said annular bead is inserted in said peripheral groove, there is provided a plurality of spaced apart sealing points between the walls of said groove and the surface of said bead, first and second axially extending annular projections integral with said annular washer and positioned between the outer edge and said intermediate portion, said first and second annular projections being coaxial with said washer and protruding axially from the inner face of the washer, said first annular projection bearing in sealing engagement against said radially extending abutment surface, and said second axially extending annular projection being positioned within and closely adjacent to said axially extending inner cylindrical surface to insure the accurate radial centering of said annular sealing washer in said bearing to thereby seal said bearing.
Claim 3
Dependent Claim
336 words
A seal for antifriction bearings, the combination comprising: a bearing having an outer race ring with an inner peripheral groove of substantially rectangular cross section located between an axially extending outer cylindrical surface of a diameter less than the diameter of the groove bottom and an axially extending inner cylindrical surface having a diameter less than the diameter of said axially extending outer surface, thereby defining a flat annular radially extending abutment surface facing towards the outside of the bearing and further having an inner race ring with an annular seating of curved cross cross section, an annular sealing washer made of homogeneous resilient material closing the space between the said outer and inner race rings, said sealing washer comprising an intermediate annular flat body portion having a radially extending outer annular edge inserted, with resilient deformation, into said peripheral groove in the outer race ring, and further having a tapered inner lip engaging said annular seating in said inner race ring, said outer edge being formed with an annular bead of circular cross section extending circumferentially about said outer edge in a continuous uninterrupted manner, the circular cross section of the bead being of a diameter such that when said annular bead is inserted in said peripheral groove, there is provided a plurality of spaced apart sealing points between the walls of said groove and the surface of said bead, first and second axially extending annular projections integral with said annular washer and positioned between the outer edge and the intermediate portion, said first annular projection being coaxial with said washer and protruding axially from the innerface oF the washer, said first annular projection bearing in sealing engagement against said radially extending abutment surface, and said second annular projection being coaxial with said washer and protruding axially from the outer face of the washer to a position within and closely adjacent to said axially extending outer cylindrical surface to insure accurate radial centering of said annular sealing washer in said bearing to seal said bearing.
Claim 4
Dependent Claim
336 words
A seal for antifriction bearings, the combination comprising: a bearing having an outer race ring with an inner peripheral groove of substantially rectangular cross section located between an axially extending outer cylindrical surface of a diameter less than the diameter of the groove bottom and an axially extending inner cylindrical surface having a diameter less than the diameter of said axially extending outer surface, thereby defining a flat annular radially extending abutment surface facing towards the outside of the bearing and further having an inner race ring with an annular seating of curved cross cross section, an annular sealing washer made of homogeneous resilient material closing the space between the said outer and inner race rings, said sealing washer comprising an intermediate annular flat body portion having a radially extending outer annular edge inserted, with resilient deformation, into said peripheral groove in the outer race ring, and further having a tapered inner lip engaging said annular seating in said inner race ring, said outer edge being formed with an annular bead of circular cross section extending circumferentially about said outer edge in a continuous uninterrupted manner, the circular cross section of the bead being of a diameter such that when said annular bead is inserted in said peripheral groove, there is provided a plurality of spaced apart sealing points between the walls of said groove and the surface of said bead, first and second axially extending annular projections integral with said annular washer and positioned between the outer edge and the intermediate portion, said first annular projection being coaxial with said washer and protruding axially from the innerface oF the washer, said first annular projection bearing in sealing engagement against said radially extending abutment surface, and said second annular projection being coaxial with said washer and protruding axially from the outer face of the washer to a position within and closely adjacent to said axially extending outer cylindrical surface to insure accurate radial centering of said annular sealing washer in said bearing to seal said bearing.
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |