US3721110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal joint bearing cup improvement
Assignee: Individual
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Filing: 1971-05-06
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Granted: 1973-03-20
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Expires: 1991-05-06
Abstract
Abstract A cardan type universal joint having cup-shaped bearing races for pivotally and drivingly connecting a pair of yoke members to a journal cross in torque transmitting relation wherein the bearing cups are provided with an improved thrust receiving surface in the form of a tapered annular raised rib which is integral with the inner face of the end wall. In another embodiment this feature is combined with a crowned surface on the cylindrical side wall of the bearing race which is designed to permit better distribution of load over the mean span of the trunnion portions of the journal cross.
Inventors
- 👤 G Borneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:36
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/16; F16D3/26; F16D3/38; F16D3/40; F16D3/41; F16C; F16C17/00; F16C17/04; F16C17/08; F16C21/00; F16C21/005; F16D3/382; F16D3/385; F16C19/00; F16C19/22; F16C19/44; F16C19/46; F16C19/466; F16C2361/00; F16C2361/41
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
112 words
In a universal joint assembly: a. a yoke member having an opening, b. a trunnion extending into said opening, c. bearing means disposed around said trunnion and in rolling engagement therewith, d. a bearing cup surrounding said bearing means and extending into said opening and having an end wall and a generally cylindrical side wall, e. means for retaining said bearing cup in said yoke opening, the improvement comprising: f. an annular tapered surface integral with said end wall of said bearing cup and engageable with said trunnion, said surface being tapered outwardly from its inner diameter, whereby upon initial assembly line contact exists between said annular tapered surface and said trunnion.
Claim 2
Dependent Claim
112 words
In a universal joint assembly: a. a yoke member having an opening, b. a trunnion extending into said opening, c. bearing means disposed around said trunnion and in rolling engagement therewith, d. a bearing cup surrounding said bearing means and extending into said opening and having an end wall and a generally cylindrical side wall, e. means for retaining said bearing cup in said yoke opening, the improvement comprising: f. an annular tapered surface integral with said end wall of said bearing cup and engageable with said trunnion, said surface being tapered outwardly from its inner diameter, whereby upon initial assembly line contact exists between said annular tapered surface and said trunnion.
Claim 3
Dependent Claim
30 words
The combination of claim 1 wherein the universal joint is tightly assembled so that after initial break-in, area contact exists between the annular surface and the trunnion to control friction.
Claim 4
Dependent Claim
24 words
The combination of claim 2 wherein said area contact is an annulus of engagement of width less than the width of the annular surface.
Claim 5
Dependent Claim
26 words
The combination of claim 2 wherein said area contact is an annulus of engagement of a width less than one-half the width of the annular surface.
Claim 6
Dependent Claim
21 words
The combination of claim 1 wherein said taper is at an angle of approximately 4* with respect to said end wall.
Claim 7
Dependent Claim
41 words
The combination of claim 1 wherein said generally cylindrical side wall is crowned towards the middle thereof and said taper provides a gap between said trunnion and said annular surface to accommodate limited cocking between said bearing cup and said trunnion.
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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |