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US4909641A Expired / Lapsed US ⏱️ 0.0 years remaining

Bearing with expanded load zone

Assignee: Timken US LLC
•
Filing: 1988-08-25
•
Granted: 1990-03-20
•
Expires: 2008-08-25
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Abstract

Abstract The bearing has an expanded load zone for better distribution of the load among the rollers, if used, or balls, if used, and allows the bearing to perform better under conditions of misalignment. As an example, the bearing may include a non-rotating ring which has an elastomer of non-uniform thickness bonded to it. The non-uniform thickness of the elastomer will cause a bearing race to go out of round when under load to the point that each roller or ball in approximately 180° of the load zone has the same load, thus reducing maximum rolling element stress. Plastic, lead, alloys, or babbitt materials may be used as an alternative to elastomeric material.

Inventors

  • 👤 Myron R. Mc Kenzie

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 12:24
CPC Classifications
F; F16; F16C; F16C41/00; F16C41/02; F16C27/00; F16C27/06; F16C27/066; F16C33/00; F16C33/30; F16C33/58

Claims Analysis

Total Claims: 33
Claim 1
Independent Claim 109 words
A bearing comprising: an annular outer race; an annular inner race radially spaced from the outer race to provide an outer race--inner race annulus, one of said races being fixed and the other of said races being rotatable; rolling members in the outer race--inner race annulus; and spacer means contacting the fixed race, the spacer means having less stiffness than the fixed race, the thickness of the spacer as a whole increasing with arc distance from the location of the radial bearing load, whereby a portion of the bearing load on rolling members at the location of the bearing load is transferred to adjacent ones of the rolling members.
Claim 2
Dependent Claim 109 words
A bearing comprising: an annular outer race; an annular inner race radially spaced from the outer race to provide an outer race--inner race annulus, one of said races being fixed and the other of said races being rotatable; rolling members in the outer race--inner race annulus; and spacer means contacting the fixed race, the spacer means having less stiffness than the fixed race, the thickness of the spacer as a whole increasing with arc distance from the location of the radial bearing load, whereby a portion of the bearing load on rolling members at the location of the bearing load is transferred to adjacent ones of the rolling members.
Claim 3
Dependent Claim 14 words
A bearing in accordance with claim 1 wherein: the annular inner race is rotatable.
Claim 4
Dependent Claim 14 words
A bearing in accordance with claim 1 wherein: the annular outer race is rotatable.
Claim 5
Dependent Claim 30 words
A bearing in accordance with claim 1 wherein: said spacer means has uniform thickness over an axial length equal to the length of and radially aligned with said rolling members.
Claim 6
Dependent Claim 46 words
A bearing in accordance with claim 1 wherein: said spacer means varies in the material characteristic of stiffness with arc distance from the location of said radial bearing load for further reducing load concentration on the rolling members at the location of said radial bearing load.
Claim 7
Dependent Claim 138 words
A bearing comprising: an annular outer race; an annular inner race; rolling members located between said outer and inner races; a ring; yieldable spacer means, located between said annular inner race and ring in load transmitting communication with said annular inner race and having less stiffness than said annular inner race; said annular outer race being rotatable about its axis with respect to a radial load imposed on the bearing; said ring being relatively stationary about its axis with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on said rolling members at the location of said radial bearing load by deforming said annular inner race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 8
Dependent Claim 138 words
A bearing comprising: an annular outer race; an annular inner race; rolling members located between said outer and inner races; a ring; yieldable spacer means, located between said annular inner race and ring in load transmitting communication with said annular inner race and having less stiffness than said annular inner race; said annular outer race being rotatable about its axis with respect to a radial load imposed on the bearing; said ring being relatively stationary about its axis with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on said rolling members at the location of said radial bearing load by deforming said annular inner race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 9
Dependent Claim 18 words
A bearing in accordance with claim 6, further comprising: said spacer means being fixedly secured to said ring.
Claim 10
Dependent Claim 18 words
A bearing in accordance with claim 6, further comprising: said spacer means being continuous over said arc distance.
Claim 11
Dependent Claim 18 words
A bearing in accordance with claim 8, further comprising: said spacer means fills the entire inner race-ring annulus.
Claim 12
Dependent Claim 28 words
A bearing in accordance with claim 6, further comprising: said spacer means having uniform thickness over an axial length equal to and radially aligned with said rolling members.
Claim 13
Dependent Claim 66 words
A bearing in accordance with claim 6, further comprising: said spacer means varying in the material characteristic of stiffness with arc distance from the location of said radial bearing load for further reducing load concentration on the rolling members at the location of said radial bearing load by deforming said inner race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 14
Dependent Claim 138 words
A bearing comprising: an annular outer race; an annular inner race; rolling members located between said outer and inner races; a ring; yieldable spacer means located between said annular outer race and ring in load transmitting communication with said annular outer race and having less stiffness than said annular outer race; said annular inner race being rotatable about its axis with respect to a radial load imposed on the bearing; said ring being relatively stationary about its axis with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on the rolling members at the location of said radial bearing load by deforming said annular outer race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 15
Dependent Claim 138 words
A bearing comprising: an annular outer race; an annular inner race; rolling members located between said outer and inner races; a ring; yieldable spacer means located between said annular outer race and ring in load transmitting communication with said annular outer race and having less stiffness than said annular outer race; said annular inner race being rotatable about its axis with respect to a radial load imposed on the bearing; said ring being relatively stationary about its axis with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on the rolling members at the location of said radial bearing load by deforming said annular outer race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 16
Dependent Claim 18 words
A bearing in accordance with claim 12, further comprising: said spacer means being fixedly secured to said ring.
Claim 17
Dependent Claim 18 words
A bearing in accordance with claim 12, further comprising: said spacer means being continuous over said arc distance.
Claim 18
Dependent Claim 18 words
A bearing in accordance with claim 14, further comprising: said spacer means fills the entire outer race-ring annulus.
Claim 19
Dependent Claim 30 words
A bearing in accordance with claim 12, further comprising: said spacer means having uniform thickness over an axial length equal to the length and radially aligned with said rolling members.
Claim 20
Dependent Claim 66 words
A bearing in accordance with claim 12, further comprising: said spacer means varying in the material characteristic of stiffness with arc distance from the location of said radial bearing load for further reducing load concentration on the rolling members at the location of said radial bearing load by deforming said outer race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 21
Dependent Claim 141 words
A bearing and housing assembly comprising: an annular outer race; an annular inner race; rolling members located between said annular outer and annular inner races; a housing for receiving the bearing; yieldable spacer means located between said annular outer race and the housing in load transmitting communication with said outer race and having less stiffness than said outer race; said first ring being rotatable about its axis with respect to a radial load imposed on the bearing; said housing being relatively stationary with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on the rolling members at the location of said radial bearing load by deforming said outer race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 22
Dependent Claim 141 words
A bearing and housing assembly comprising: an annular outer race; an annular inner race; rolling members located between said annular outer and annular inner races; a housing for receiving the bearing; yieldable spacer means located between said annular outer race and the housing in load transmitting communication with said outer race and having less stiffness than said outer race; said first ring being rotatable about its axis with respect to a radial load imposed on the bearing; said housing being relatively stationary with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on the rolling members at the location of said radial bearing load by deforming said outer race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 23
Dependent Claim 20 words
A bearing and housing in accordance with claim 18, further comprising: said spacer means being fixedly secured to said housing.
Claim 24
Dependent Claim 20 words
A bearing and housing in accordance with claim 18, further comprising: said spacer means being continuous over said arc distance.
Claim 25
Dependent Claim 33 words
A bearing and housing in accordance with claim 18, further comprising: said spacer means having uniform thickness over an axial length equal to the length of, and radially aligned with, said rolling members.
Claim 26
Dependent Claim 68 words
A bearing and housing in accordance with claim 18, further comprising: said spacer means varying in the material characteristic of stiffness with arc distance from the location of said radial bearing load for further reducing load concentration on the rolling members at the location of said radial bearing load by deforming said outer race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 27
Dependent Claim 144 words
A bearing and shaft assembly comprising: an annular outer race; an annular inner race; rolling members located between said annular outer and said annular inner races; a shaft; yieldable spacer means located between said annular inner race and the shaft in load transmitting communication with said annular inner race and having less stiffness than said annular inner race; said annular inner race being rotatable about its axis with respect to a radial load imposed on the bearing; said shaft being relatively stationary about its axis with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on the rolling members at the location of said radial bearing load by deforming said inner race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 28
Dependent Claim 144 words
A bearing and shaft assembly comprising: an annular outer race; an annular inner race; rolling members located between said annular outer and said annular inner races; a shaft; yieldable spacer means located between said annular inner race and the shaft in load transmitting communication with said annular inner race and having less stiffness than said annular inner race; said annular inner race being rotatable about its axis with respect to a radial load imposed on the bearing; said shaft being relatively stationary about its axis with respect to said radial bearing load; said spacer means increasing in thickness with arc distance from the location of said radial bearing load for reducing load concentration on the rolling members at the location of said radial bearing load by deforming said inner race for transferring a portion of said load to adjacent ones of the rolling members.
Claim 29
Dependent Claim 21 words
A bearing and shaft assembly in accordance with claim 23, further comprising: said spacer means being fixedly secured to said shaft.
Claim 30
Dependent Claim 21 words
A bearing and shaft assembly in accordance with claim 23, further comprising: said spacer means being continuous over said arc distance.
Claim 31
Dependent Claim 21 words
A bearing and shaft assembly in accordance with claim 25, further comprising: said spacer means fills the entire inner race--shaft annulus.
Claim 32
Dependent Claim 31 words
A bearing and shaft assembly in accordance with claim 23, further comprising: said spacer means having uniform thickness over an axial length equal to and radially aligned with said rolling members.
Claim 33
Dependent Claim 69 words
A bearing and shaft assembly in accordance with claim 23, further comprising: said spacer means varying in the material characteristic of stiffness with arc distance from the location of said radial bearing load for further reducing load concentration on the rolling members at the location of said radial bearing load by deforming said inner race for transferring a portion of said load to adjacent ones of the rolling members.

References Cited (Backward Citations)

US2983029A Cited
US3321256A Cited
FR1507257A Cited
US3890854A Cited
US4067626A Cited
FR2426829A1 Cited
SU870784A1 Cited
GB2203501A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-03-19 1993-09-18 1994-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-03-19 1997-09-18 1998-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-03-19 2001-09-18 2002-03-20 $7700.00 Window Closed / Lapsed

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