US3897982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide way bearing
Assignee: Individual
•
Filing: 1973-09-20
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Granted: 1975-08-05
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Expires: 1993-09-20
Abstract
Abstract A slide way bearing is capable of bearing the load, imposed on a track shaft of the bearing, from all directions. The bearing has oval shaped ball raceways having transversely curved load-bearing surfaces corresponding to the curvature of the balls. The track shaft has angularly spaced ribs extending in parallel relation longitudinally thereof, and each disposed between a pair of race ways. The race ways are formed by cooperating grooves in the inner surface of a sleeve and in the outer surface of a ball retainer, the ball retainer being telescoped in the sleeve and embracing that portion of the track shaft projecting upwardly above a bed. The sleeve, the ball retainer and the ribs are relatively arranged in the manner such that the balls in the race ways, when adjacent the ribs, are in load bearing contact with the track shaft, the sleeve and the ribs and, when in other portions of the race way, are out of contact with the track shaft and the ribs and are free of load.
Inventors
- 👤 Hiroshi Teramachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:38
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/04; F16C29/06; F16C29/0676; B; B23; B23Q; B23Q1/00; B23Q1/25; B23Q1/26; B23Q1/40; B62; B62D; B62D3/00; B62D3/02; B62D3/12; B62D3/123; F16C29/0633; F16C29/0652; F16C29/0654; F16C29/0659; F16C29/0664; F16C2322/00; F16C2322/39; F16H; F16H55/00; F16H55/02; F16H55/26; F16H55/28; F16H55/283; F16H55/285
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
339 words
A slide way bearing comprising, in combination, an elongated bed; an elongated track shaft secured to said bed to extend therealong and project thereabove, at least that portion of said track shaft projecting above said bed having a circular cross section, and said track shaft having plural, angularly spaced ribs extending in parallel relation longitudinally thereof; a sleeve, having a C-shaped cross-section conforming, in arcuate extent, to substantially the cross section of said upwardly projecting portion of said track shaft; said sleeve being formed with pairs of longitudinal sleeve grooves in its inner surface, with one sleeve groove of each pair being deeper than the other sleeve groove of the pair, the sleeve grooves of each pair having their opposite ends interconnected by arcuate grooves; a ball retainer, having a C-shaped cross-section conforming in arcuate extent substantially to the arcuate extent of said upwardly projecting track shaft portion, telescoped in said sleeve and embracing said projecting portion of said track shaft; said ball retainer being formed with pairs of longitudinal retainer grooves in its outer surface, with one retainer groove of each pair being deeper than the other retainer groove of the pair, and the retainer grooves of each pair having their opposite ends interconnected by arcuate grooves; said retainer grooves being aligned with said sleeve grooves and each deeper retainer groove having a slotted bottom and being aligned with a shallower sleeve groove, said sleeve and retainer grooves conjointly forming oval race ways for balls; each of said ribs being disposed between a pair of race ways whose slotted retainer grooves are juxtaposed to the rib; and balls in each of said race ways; said sleeve, said ball retainer and said ribs being relatively arranged in a manner such that balls in said race ways, when in said slotted retainer grooves, are in load bearing contact with said track shaft, said sleeve and said ribs, and, when in said deeper sleeve grooves, are out of contact with said track shaft and said ribs and are free of load.
Claim 2
Dependent Claim
339 words
A slide way bearing comprising, in combination, an elongated bed; an elongated track shaft secured to said bed to extend therealong and project thereabove, at least that portion of said track shaft projecting above said bed having a circular cross section, and said track shaft having plural, angularly spaced ribs extending in parallel relation longitudinally thereof; a sleeve, having a C-shaped cross-section conforming, in arcuate extent, to substantially the cross section of said upwardly projecting portion of said track shaft; said sleeve being formed with pairs of longitudinal sleeve grooves in its inner surface, with one sleeve groove of each pair being deeper than the other sleeve groove of the pair, the sleeve grooves of each pair having their opposite ends interconnected by arcuate grooves; a ball retainer, having a C-shaped cross-section conforming in arcuate extent substantially to the arcuate extent of said upwardly projecting track shaft portion, telescoped in said sleeve and embracing said projecting portion of said track shaft; said ball retainer being formed with pairs of longitudinal retainer grooves in its outer surface, with one retainer groove of each pair being deeper than the other retainer groove of the pair, and the retainer grooves of each pair having their opposite ends interconnected by arcuate grooves; said retainer grooves being aligned with said sleeve grooves and each deeper retainer groove having a slotted bottom and being aligned with a shallower sleeve groove, said sleeve and retainer grooves conjointly forming oval race ways for balls; each of said ribs being disposed between a pair of race ways whose slotted retainer grooves are juxtaposed to the rib; and balls in each of said race ways; said sleeve, said ball retainer and said ribs being relatively arranged in a manner such that balls in said race ways, when in said slotted retainer grooves, are in load bearing contact with said track shaft, said sleeve and said ribs, and, when in said deeper sleeve grooves, are out of contact with said track shaft and said ribs and are free of load.
Claim 3
Dependent Claim
25 words
A slide way bearing, as claimed in claim 1, in which said grooves are curved transversely to conform to the curved surfaces of said balls.
Claim 4
Dependent Claim
27 words
A slide way bearing, as claimed in claim 2, in which the sides of said ribs are curved transversely to conform to the curvature of said balls.
Claim 5
Dependent Claim
59 words
A slide way bearing, as claimed in claim 1, in which the upper surface of said bed is formed with an elongated V-shaped groove terminating, at its lower edge, in a substantially rectangular channel; the lower portion of said track shaft having downwardly converging V-shaped surfaces mating with said groove and a rectangular rib engageable in said rectangular channel.
Claim 6
Dependent Claim
34 words
A slide way bearing, as claimed in claim 1, in which the inner surface of said ball retainer is formed with rectangular grooves extending therealong each engageable with a respective one of said ribs.
References Cited (Backward Citations)
US3037821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |