US3811744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rolling bearings
Assignee: Timken Co
•
Filing: 1973-01-19
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Granted: 1974-05-21
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Expires: 1993-01-19
Abstract
Abstract A flat tapered roller thrust bearing has a cage provided with axially directed lips which engage the opposed faces of the races and seal the bearing. The cage may also be provided with axially extending flanges which are shaped to enclose the outer diameter of the races so as to hold the races together.
Inventors
- 👤 F Wren
- 👤 E Instone
- 👤 J Hunt
- 👤 A Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:31
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/761; F16C19/00; F16C19/22; F16C19/30; F16C33/30; F16C33/46; F16C33/4617; F16C33/78; F16C33/7893
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
160 words
In a thrust bearing having annular races provided with opposed track surfaces and rolling elements between the races and engaged with the track surfaces so that the track surfaces are spaced apart in the axial direction and one race will rotate relative to the other race, an improved cage comprising: a disklike body located between the track surfaces and having circumferentially spaced pockets in which the rolling elements are contained; annular sealing lips on the body and extended therefrom in both axial directions, the lips being flexible and being engaged with the races to form seals with the races; and flanges projected axially from the disk-like body and interlocking with the races such that the races can rotate relative to each other and to the cage, but are maintained together so they cannot be withdrawn in the axial direction, whereby the cage maintains the proper spacing between the rolling elements, seals the interior of the bearing, and unitizes the bearing.
Claim 2
Dependent Claim
160 words
In a thrust bearing having annular races provided with opposed track surfaces and rolling elements between the races and engaged with the track surfaces so that the track surfaces are spaced apart in the axial direction and one race will rotate relative to the other race, an improved cage comprising: a disklike body located between the track surfaces and having circumferentially spaced pockets in which the rolling elements are contained; annular sealing lips on the body and extended therefrom in both axial directions, the lips being flexible and being engaged with the races to form seals with the races; and flanges projected axially from the disk-like body and interlocking with the races such that the races can rotate relative to each other and to the cage, but are maintained together so they cannot be withdrawn in the axial direction, whereby the cage maintains the proper spacing between the rolling elements, seals the interior of the bearing, and unitizes the bearing.
Claim 3
Dependent Claim
17 words
The structure according to claim 1 wherein the lips are located radially inwardly from the roller pockets.
Claim 4
Dependent Claim
24 words
The structure according to claim 2 wherein the flanges are located radially outwardly from the pockets and engage the races to form seals therewith.
Claim 5
Dependent Claim
39 words
The structure according to claim 2 wherein another set of annular sealing lips is on the body outwardly from the pockets therein, the other sealing lips also projecting axially, being flexible, and engaging the races to form seals therewith.
Claim 6
Dependent Claim
16 words
The structure according to claim 4 wherein the cage is an integral unit formed from plastic.
Claim 7
Dependent Claim
16 words
The structure according to claim 1 wherein the flanges overlie the peripheral surfaces of the races.
Claim 8
Dependent Claim
30 words
The structure according to claim 6 wherein the flanges are directed radially inwardly at their ends and engage the races to prevent the races from being withdrawn from each other.
Claim 9
Dependent Claim
23 words
The structure according to claim 1 wherein the lips are inclined at oblique angles relative to the axis of rotation for the bearing.
Claim 10
Dependent Claim
157 words
A thrust bearing comprising a pair of annular races having center bores and opposed track surfaces, rolling elements between the races and engaged with the track surfaces to space the track surfaces apart and to enable one race to rotate relative to the other race; an annular disk-like body between the track surfaces of the opposed races and having circumferentially spaced pockets in which the rolling elements are contained so that the disk-like body maintains the proper spacing between the rolling elements; retaining members carried by the disk-like body and extending axially therefrom over the peripheries of the two races, the retaining members being directed inwardly beyond the races to a diameter less than the outer diameter of the races so that the retaining elements prevent the races from being separated; and seal means carried by the disk-like body and engaged with the two races for preventing the ingress of contaminants into the interior of the bearing.
Claim 11
Dependent Claim
157 words
A thrust bearing comprising a pair of annular races having center bores and opposed track surfaces, rolling elements between the races and engaged with the track surfaces to space the track surfaces apart and to enable one race to rotate relative to the other race; an annular disk-like body between the track surfaces of the opposed races and having circumferentially spaced pockets in which the rolling elements are contained so that the disk-like body maintains the proper spacing between the rolling elements; retaining members carried by the disk-like body and extending axially therefrom over the peripheries of the two races, the retaining members being directed inwardly beyond the races to a diameter less than the outer diameter of the races so that the retaining elements prevent the races from being separated; and seal means carried by the disk-like body and engaged with the two races for preventing the ingress of contaminants into the interior of the bearing.
Claim 12
Dependent Claim
20 words
A thrust bearIng according to claim 9 wherein the seal means is located inwardly from the pockets in the body.
References Cited (Backward Citations)
FR1327643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |