US4120542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cageless thrust bearing with unguided rollers
Assignee: Timken US LLC
•
Filing: 1976-12-15
•
Granted: 1978-10-17
•
Expires: 1996-12-15
Abstract
Abstract The cageless thrust bearing with unguided cylindrical rollers comprises a pair of thrust bearing races with axially separated flat thrust raceways. Cylindrical rollers all having the same diameter are located between the separated flat thrust raceways. The spacing of the rollers is such that the rollers become radially aligned in the bearing under a rotating thrust load, without side or end guidance of the rollers.
Inventors
- 👤 Chander Prakash Bhateja
- 👤 Richard Lassen Alling
- 👤 Dean Edward Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:53
CPC Classifications
F; F16; F16C; F16C19/00; F16C19/22; F16C19/30; F16C2240/00; F16C2240/40; F16C2240/70; F16C2240/80; F16C2240/82; F16C2240/84
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A cageless thrust bearing with unguided cylindrical rollers comprising: a pair of axially separated flat thrust bearing raceways; a plurality of cylindrical rollers all having the same diameter located between said separated flat thrust raceways; and a pair of axially extending radially separated containment members, the radial separations of the containment members being too great and the lengths of the cylindrical rollers too small for both ends of the radially aligned cylindrical rollers to contact the containment members at the same time when the containment members are concentric or for the containment members to cooperatively radially orient the cylindrical rollers.
Claim 2
Dependent Claim
100 words
A cageless thrust bearing with unguided cylindrical rollers comprising: a pair of axially separated flat thrust bearing raceways; a plurality of cylindrical rollers all having the same diameter located between said separated flat thrust raceways; and a pair of axially extending radially separated containment members, the radial separations of the containment members being too great and the lengths of the cylindrical rollers too small for both ends of the radially aligned cylindrical rollers to contact the containment members at the same time when the containment members are concentric or for the containment members to cooperatively radially orient the cylindrical rollers.
Claim 3
Dependent Claim
36 words
A thrust bearing in accordance with claim 1 wherein the containment members include an inner flange and an outer flange on the radially inner and radially outer peripheries of at least one of the bearing raceways.
Claim 4
Dependent Claim
29 words
A thrust bearing in accordance with claim 2 wherein the diagonal lengths of the rollers is greater than the radial space between the inner flange and the outer flange.
Claim 5
Dependent Claim
142 words
A cageless thrust bearing with unguided cylindrical rollers comprising: a pair of thrust bearing races with axially separated annular flat raceways; each race having a pair of radially separated axially extending flanges; a plurality of said spaced cylindrical rollers each having a diagonal length and each having the same diameter axially located between the annular flat raceways and radially located between the flanges; the spacing of the rollers being such that the rollers become radially aligned upon application of a rotating load to the thrust bearing; the radial spacing of the flanges on each annular flat race being greater than the axial lengths of the rollers, but less than the diagonal lengths of the rollers; an outer annular cup surrounding the two races; and an annular shock absorbing member located on the annular outside of at least one of the thrust races.
Claim 6
Dependent Claim
142 words
A cageless thrust bearing with unguided cylindrical rollers comprising: a pair of thrust bearing races with axially separated annular flat raceways; each race having a pair of radially separated axially extending flanges; a plurality of said spaced cylindrical rollers each having a diagonal length and each having the same diameter axially located between the annular flat raceways and radially located between the flanges; the spacing of the rollers being such that the rollers become radially aligned upon application of a rotating load to the thrust bearing; the radial spacing of the flanges on each annular flat race being greater than the axial lengths of the rollers, but less than the diagonal lengths of the rollers; an outer annular cup surrounding the two races; and an annular shock absorbing member located on the annular outside of at least one of the thrust races.
Claim 7
Dependent Claim
123 words
A cageless thrust bearing with unguided cylindrical rollers comprising: a pair of thrust bearing races with axially separated annular flat raceways; each race having a pair of radially separated axially extending flanges; a plurality of spaced cylindrical rollers each having a diagonal length and each having the same diameter axially located between the annular flat raceways and radially located between the flanges; the spacing of the rollers being such that the rollers become radially aligned upon application of a rotating load to the thrust bearing; the radial spacing of the flanges on each annular flat race being greater than the axial lengths of the rollers but less than the diagonal lengths of the rollers; and an outer annular cup surrounding the two races.
Claim 8
Dependent Claim
123 words
A cageless thrust bearing with unguided cylindrical rollers comprising: a pair of thrust bearing races with axially separated annular flat raceways; each race having a pair of radially separated axially extending flanges; a plurality of spaced cylindrical rollers each having a diagonal length and each having the same diameter axially located between the annular flat raceways and radially located between the flanges; the spacing of the rollers being such that the rollers become radially aligned upon application of a rotating load to the thrust bearing; the radial spacing of the flanges on each annular flat race being greater than the axial lengths of the rollers but less than the diagonal lengths of the rollers; and an outer annular cup surrounding the two races.
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) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |