US3891284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Longitudinally moving shaft bearing
Assignee: SKF Industrial Trading and Development Co BV
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Filing: 1974-04-15
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Granted: 1975-06-24
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Expires: 1994-04-15
Abstract
Abstract A ball bearing for journalling shafts, axles and the like for longitudinal movement having a hollow cylindrical cage in which a plurality of closed-end ball guides are uniformly spaced about its circumference. Each guide is formed of a pair of axial and a pair of interconnecting arcuate end grooves in which the balls are retained. One axial groove of each pair is open with a narrow slot to the inner bore of the cage to permit the balls to engage the shaft or axle located therein, and open to the exterior of the cage. The balls are covered by a rail having a race surface engaging the balls. Each of the rails are interconnected in a cover assembly by being connected at only one end to the other rails.
Inventors
- 👤 Horst Ernst
- 👤 Manfred Brandenstein
- 👤 Armin Olschewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:30
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/04; F16C29/06; F16C29/068; F16C29/0683; F16C29/0685; F16C29/069
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
131 words
A ball bearing for journalling longitudinally moving shafts, axles or the like comprising a hollow cylindrical cage having an inner bore adapted to receive said shaft, said cage having a plurality of closed end ball guide paths uniformly spaced about its circumference, each guide being formed of at least one axial groove in which the balls are retained, said axial groove being open to the inner bore of the cage to engage the shaft therein and open to the outer surface of said cage, each axial groove having a rail located in the outer opening, said rail having a race surface engaging the balls in said groove, the rails for all of said grooves being interconnected at only one end to each other to form a cylindrical cover for said cage.
Claim 2
Dependent Claim
131 words
A ball bearing for journalling longitudinally moving shafts, axles or the like comprising a hollow cylindrical cage having an inner bore adapted to receive said shaft, said cage having a plurality of closed end ball guide paths uniformly spaced about its circumference, each guide being formed of at least one axial groove in which the balls are retained, said axial groove being open to the inner bore of the cage to engage the shaft therein and open to the outer surface of said cage, each axial groove having a rail located in the outer opening, said rail having a race surface engaging the balls in said groove, the rails for all of said grooves being interconnected at only one end to each other to form a cylindrical cover for said cage.
Claim 3
Dependent Claim
24 words
The bearing according to claim 1 wherein each guide path includes a second axial groove and pair of end grooves connecting said axial grooves.
Claim 4
Dependent Claim
25 words
The bearing according to claim 1 wherein said rails are interconnected at alternate opposite ends in a sinuous pattern and formed into a cylindrical sleeve.
Claim 5
Dependent Claim
20 words
The bearing according to claim 1 wherein said rails are interconnected at a corresponding one end by an annular member.
Claim 6
Dependent Claim
18 words
The bearing according to claim 1 wherein said cover assembly is secured to said cage against axial movement.
Claim 7
Dependent Claim
32 words
The bearing according to claim 5 wherein the free ends of said rails are secured to said cage against relative movement with respect to each other and/or with respect to said cage.
Claim 8
Dependent Claim
22 words
The bearing according to claim 4 wherein said annular member is secured to said cage to prevent axial movement of said cover.
Claim 9
Dependent Claim
34 words
The bearing according to claim 1 wherein the free end of at least one of said rails is provided with projections and the cage is provided with a corresponding recess to receive said projections.
Claim 10
Dependent Claim
33 words
The bearing according to claim 7 wherein the free end of at least one of said rails is provided with an inwardly bent tab adapted to engage over the end of said cage.
Claim 11
Dependent Claim
21 words
The bearing according to claim 9 wherein the end of said cage is formed with a recess for receiving said tab.
Claim 12
Dependent Claim
21 words
The bearing according to claim 3 wherein said cage is formed with recesses for receiving the free end of said tabs.
Claim 13
Dependent Claim
21 words
The bearing according to claim 3 wherein said cage is formed with recesses for receiving the interconnecting portions of said cover.
Claim 14
Dependent Claim
14 words
The bearing according to claim 1 wherein the interconnection between said rails is split.
Claim 15
Dependent Claim
19 words
The bearing according to claim 1 wherein the outer surface of said rails is bowed in the axial direction.
Claim 16
Dependent Claim
17 words
The bearing according to claim 1 wherein the outer surface of said rails is provided with recesses.
Claim 17
Dependent Claim
19 words
The bearing according to claim 1 wherein said cage is provided with seal means at at least one end.
Claim 18
Dependent Claim
24 words
The bearing according to claim 16 wherein said seal means is formed by providing the end of said cage with an inwardly directed lip.
Claim 19
Dependent Claim
19 words
The bearing according to claim 16 including a resilient annular seal ring secured to the end of said cage.
Claim 20
Dependent Claim
18 words
The bearing according to claim 1 wherein said cover is formed from a single piece of sheet metal.
Claim 21
Dependent Claim
47 words
The bearing according to claim 19 wherein said cover is formed from a flat round sheet to have a central annulus and a plurality of radially extending spokes each having a race surface, and thereafter bending said spokes with respect to the annulus into parallel axial directions.
Claim 22
Dependent Claim
40 words
The bearing according to claim 19 wherein said cover is made from an elongated flat sheet in which a plurality of transversely extending tongues are formed joined to each other at one end only and thereafter rolled into a cylinder.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |