US3897119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear bearing slide
Assignee: Design Components Inc
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Filing: 1973-11-23
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Granted: 1975-07-29
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Expires: 1993-11-23
Abstract
Abstract A slide supported on a base by two linear bearings which are each comprised of at least two partially flattened round rods at diagonally opposed corners in the slide and base, the flat parts of the rods providing self adjusting raceways for roller bearings spaced therealong between the rods, each roller bearing on the flats of the diagonally positioned rods. A slide which can bear loads in any direction has pairs of such rods positioned at diagonal corners of a square providing self adjusting raceways for two sets of roller bearings in line, one set bearing on the flats of one diagonal pair of rods and the other set bearing on the flats of the other pair of diagonal rods.
Inventors
- 👤 Thomas Mcmurtrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:11
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/04; F16C29/041; F16C29/005; F16C33/00; F16C33/30; F16C33/58; F16C33/60; F16C33/61
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
181 words
A slide bearing support apparatus including one member slidable on another member, the combination comprising: a pair of parallel slide bearing assemblies disposed between said members and each comprising; a pair of elongated, rectilinear rods having central axes parallel to each other, the longitudinal surfaces of each of said rods including an elongated curved portion and an oppositely directed coextending flat portion, said flat portions of said rods being spaced apart and facing each other to define an elongated rectilinear raceway; a plurality of rollers disposed in said raceway and contacting the flat portions on said rods; and rod support surfaces defined by each of said members, said support surfaces defined by said one member contacting the curved portion on one of said rods and said support surfaces defined by said another member contacting the curved portion on the other of said rods, and wherein said support surfaces are shaped so as to restrict movement of said rods in directions transverse their axes and to allow unrestrained rotational movement of the entire rods thereabout without creating torsional stresses in said rods.
Claim 2
Dependent Claim
181 words
A slide bearing support apparatus including one member slidable on another member, the combination comprising: a pair of parallel slide bearing assemblies disposed between said members and each comprising; a pair of elongated, rectilinear rods having central axes parallel to each other, the longitudinal surfaces of each of said rods including an elongated curved portion and an oppositely directed coextending flat portion, said flat portions of said rods being spaced apart and facing each other to define an elongated rectilinear raceway; a plurality of rollers disposed in said raceway and contacting the flat portions on said rods; and rod support surfaces defined by each of said members, said support surfaces defined by said one member contacting the curved portion on one of said rods and said support surfaces defined by said another member contacting the curved portion on the other of said rods, and wherein said support surfaces are shaped so as to restrict movement of said rods in directions transverse their axes and to allow unrestrained rotational movement of the entire rods thereabout without creating torsional stresses in said rods.
Claim 3
Dependent Claim
41 words
An apparatus according to claim 1 wherein said support surfaces comprise a pair of planar surfaces tangent to said curved portions on said rods so as to estaBlish therewith contact only along elongated lines parallel to the axes of said rods.
Claim 4
Dependent Claim
22 words
An apparatus according to claim 2 wherein said curved portions are circular and said lines of contact are spaced 90* apart thereon.
Claim 5
Dependent Claim
19 words
An apparatus according to claim 3 wherein said planar support surfaces are formed by rectangular grooves in said members.
Claim 6
Dependent Claim
43 words
An apparatus according to claim 4 wherein said one member is bifurcated and straddles the other member, and said grooves include longitudinally extending grooves in the side of each bifurcation face and opposed longitudinally extending grooves in the sides of the other member.
Claim 7
Dependent Claim
44 words
An apparatus according to claim 5 wherein said opposed rectangular grooves form an elongated, four cornered rectangular chamber, and one of said rods is positioned in each corner of said chamber with said flat portions on said rods facing the center of said chamber.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |