Patent US4478463A successfully refreshed from Google Patents.
US4478463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conical roller bearing
Assignee: NSK Ltd
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Filing: 1982-12-13
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Granted: 1984-10-23
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Expires: 2002-12-13
Abstract
Abstract A conical roller bearing has a side plate of substantially L-shaped cross section fitted to the larger diameter side end portion of the inner peripheral surface of an outer race. The inner end surface of the side plate and the end surface of the larger diameter portion of a retainer are axially opposed to each other so that the inner end surface and the end surface of the larger diameter portion bear against each other when the cone has moved axially outwardly.
Inventors
- 👤 Toru Takai
- 👤 Kenji Takei
- 👤 Youichi Nagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:59
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/72; F16C33/76; F16C33/78; F16C33/7869; F16C19/00; F16C19/22; F16C19/34; F16C19/38; F16C19/383; F16C19/385; F16C19/386; F16C33/7803; F16C33/7813; F16C33/7873; F16C33/7876
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
221 words
In a conical roller bearing having an outer race and an inner race spaced radially and defining tapered bearing surfaces spaced further apart at the axially outer end portion of said bearing surfaces, a plurality of rollers held between said inner race and said outer race, a retainer holding said rollers, and a seal fitted between the axially outer end portions of said outer race and said inner race, said seal having a rigid portion fitted to the axially outer portion of said outer race and an elastomeric portion positioned adjacent said inner race, the improvement wherein said retainer includes an outer portion extending axially outwards from said rollers and said rigid portion includes means extending radially inwards from said outer race at a position adapted to engage the adjacent outer portion of said retainer as said retainer shifts axially outwards relative said outer race for preventing the axially outer end surfaces of said rollers from engaging any portions of said seal, said rigid portion including a circumferential member fixed to the inner radial surface of the outer end portion of said outer race, and said means includes an angled member having a circumferential portion fitted to the radially inner surface of said circumerfential member and a flange portion depending radially inwards of the axially inner portion of said circumferential portion.
Claim 2
Dependent Claim
221 words
In a conical roller bearing having an outer race and an inner race spaced radially and defining tapered bearing surfaces spaced further apart at the axially outer end portion of said bearing surfaces, a plurality of rollers held between said inner race and said outer race, a retainer holding said rollers, and a seal fitted between the axially outer end portions of said outer race and said inner race, said seal having a rigid portion fitted to the axially outer portion of said outer race and an elastomeric portion positioned adjacent said inner race, the improvement wherein said retainer includes an outer portion extending axially outwards from said rollers and said rigid portion includes means extending radially inwards from said outer race at a position adapted to engage the adjacent outer portion of said retainer as said retainer shifts axially outwards relative said outer race for preventing the axially outer end surfaces of said rollers from engaging any portions of said seal, said rigid portion including a circumferential member fixed to the inner radial surface of the outer end portion of said outer race, and said means includes an angled member having a circumferential portion fitted to the radially inner surface of said circumerfential member and a flange portion depending radially inwards of the axially inner portion of said circumferential portion.
Claim 3
Dependent Claim
26 words
A conical bearing according to claim 1, said angled member having a support portion extending axially outwards from a radially inner portion of said flange portion.
Claim 4
Dependent Claim
20 words
A conical bearing according to claim 1, the outer portion of said retainer includes an enlarged portion extending radially outwards.
Claim 5
Dependent Claim
17 words
A conical roller bearing according to claim 1, wherein said retainer is formed of a plastic material.
Claim 6
Dependent Claim
56 words
A conical roller bearing according to claim 4, the outer portion of said retainer including means formed by an enlarged portion thereof for deforming when brought into sufficient pressure engagement with said rigid portion during axially outer movement thereof so as to spread said enlarged portion radially to protect the axially outer surface of said rollers.
References Cited (Backward Citations)
US2485011A
Cited
US3306683A
Cited
US3425758A
Cited
US4153309A
Cited
US4203635A
Cited
JPS5682324A
Cited
US4325591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |