Patent US4789249A successfully refreshed from Google Patents.
US4789249A
Expired / Lapsed
US
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Linear motion bearing and shafts
Assignee: TGA North America Holdings III Inc
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Filing: 1987-06-04
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Granted: 1988-12-06
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Expires: 2007-06-04
Abstract
Abstract A linear motion bearing assembly is provided having a pair of aligned shafts which are fastened together, and a pair of bearings which either roll or slide on the aligned shafts. The shafts may be fastened together along a joint formed on their outer surfaces or they may be fastened together with a spacer disposed between the shafts.
Inventors
- 👤 Francis V. Mutolo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:23
CPC Classifications
F; F16; F16C; F16C29/00; F16C29/04; F16C29/06; F16C29/0676; F16C29/005; F16C29/008; F16C29/02
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
171 words
A linear motion bearing and shaft assembly for axial movement which comprises: a first round support shaft; a second round support shaft with its axis parallel to the axis of said first support shaft, rigidly secured together with said first support shaft, said first and second support shafts being independently end supported to allow unrestricted axial movement along their lengths; a first linear motion open-type recirculating bearing disposed on said first shaft for axial movement thereon; and a second linear motion open-type recirculating bearing disposed on said second shaft for axial movement thereon, the openings of said first and second open-type bearings substantially facing each other and wherein said first and second support shafts are rigidly secured together by means including structure which is disposed between said first and second shafts, said structure contacting both support shafts and laterally symmetrical in shape with regard to a plane passing through the axes of said shafts; and whereby said means maintains the assembly in torsional balance when subject to uneven or opposing forces.
Claim 2
Dependent Claim
171 words
A linear motion bearing and shaft assembly for axial movement which comprises: a first round support shaft; a second round support shaft with its axis parallel to the axis of said first support shaft, rigidly secured together with said first support shaft, said first and second support shafts being independently end supported to allow unrestricted axial movement along their lengths; a first linear motion open-type recirculating bearing disposed on said first shaft for axial movement thereon; and a second linear motion open-type recirculating bearing disposed on said second shaft for axial movement thereon, the openings of said first and second open-type bearings substantially facing each other and wherein said first and second support shafts are rigidly secured together by means including structure which is disposed between said first and second shafts, said structure contacting both support shafts and laterally symmetrical in shape with regard to a plane passing through the axes of said shafts; and whereby said means maintains the assembly in torsional balance when subject to uneven or opposing forces.
Claim 3
Dependent Claim
32 words
An apparatus according to claim 1 wherein said structure securely first and second shafts includes welding, cementing or brazing of a joint along the outer surfaces of said first and second shafts.
Claim 4
Dependent Claim
37 words
An apparatus according to claim 1 wherein said structure joining said first and second shafts includes a plurality of bolts, said bolts being threaded into at least one shaft and having their heads countersunk into a shaft.
Claim 5
Dependent Claim
32 words
An apparatus according to claim 1, wherein said structure lowering said first and second shafts includes a plurality of pins cemented or pressed into holes formed in said first and second shafts.
Claim 6
Dependent Claim
78 words
An apparatus according to claim 2, 3 or 4 wherein said first and second linear motion bearings are anti-friction bearings which include corresponding first and second sets of raceways, said first and second linear motion bearings have a longitudinal sector removed therefrom, said first and second sets of raceways being substantially filled with balls, and the number of raceways in said first set of raceways is equal to the number of raceways in said second set of raceways.
Claim 7
Dependent Claim
78 words
An apparatus according to claim 2, 3 or 4 wherein said first and second linear motion bearings are anti-friction bearings which include corresponding first and second sets of raceways, said first and second linear motion bearings having a longitudinal sector removed therefrom, said first and second sets of raceways being substantially filled with balls, and the numbers of raceways in said first set of raceways is unequal to the number of raceways in said second set of raceways.
Claim 8
Dependent Claim
61 words
An apparatus according to claim 2, 3 or 4 wherein said first and second linear motion bearings are anti-friction bearings which include first and second sets of race was substantially filed with balls, said bearings, having longitudinal sectors thereof removed, the end of each of said sets of raceways extending into the removed longitudinal section of the other set of raceways.
Claim 9
Dependent Claim
22 words
An apparatus according to claim 1 wherein said structure includes a spacer spot welded or brazed to said first and second shafts.
Claim 10
Dependent Claim
22 words
An apparatus according to claim 1 wherein said structure includes a spacer continuously welded or brazed to said first and second shafts.
Claim 11
Dependent Claim
46 words
An apparatus according to claim 1 wherein said structure includes a spacer bolted to said first and second shafts by a plurality of bolts, said bolts pass through said spacer and are threaded into at least one shaft and have their heads countersunk in a shaft.
Claim 12
Dependent Claim
44 words
An apparatus according to claim 1 wherein said structure includes a spacer is fastened to said first and second shafts by a plurality of pins which pass through said spacer and are cemented or pressed into holes formed in said first and second shafts.
Claim 13
Dependent Claim
19 words
An apparatus according to claim 1 wherein said structure includes a spacer cemented to said first and second shaft.
Claim 14
Dependent Claim
36 words
An apparatus according to claim 1 wherein said structure including a spacer including a plurality of apertures and bolts pass through said spacer at the apertures to secure said first and second shafts to said spacer.
Claim 15
Dependent Claim
82 words
An apparatus according to claim 1, 8, 9, 10, 11, 12 or 13 wherein said first and second linear motion bearings are anti-friction bearings which include corresponding first and second sets of raceways, said first and second linear motion bearings having a longitudinal sector removed therefrom, said first and second sets of raceways being substantially filled with balls, and the number of raceways in said first set of raceways is equal to the number of raceways in said second set of raceways.
Claim 16
Dependent Claim
82 words
An apparatus according to claim 1, 8, 9, 10, 11, 12 or 13 wherein said first and second linear motion bearings are anti-friction bearings which include corresponding first and second sets of raceways, said first and second linear motion bearings having a longitudinal sector removed therefrom, said first and second sets of raceways being substantially filled with balls, and the number of raceways in said first set of raceways is unequal to the number of raceways in said second set of raceways.
Claim 17
Dependent Claim
64 words
An apparatus according to claim 1, 8, 9, 10, 11, 12, or 13 wherein said first and second linear motion bearings are anti-friction bearings which include first and second sets of raceways, substantially filled with balls, said bearings having longitudinal sectors thereof removed, the end of each of said sets of raceways extending into the removed longitudinal section of the other set of raceways.
Claim 18
Dependent Claim
23 words
An apparatus according to claim 1 wherein said first and second linear motion bearings are disposed in the bore of a pillow block.
Claim 19
Dependent Claim
45 words
An apparatus according to claim 1 wherein said first and second shafts are secured together by structure comprising a spacer between said first and second shafts, and said first and second linear motion bearings are disposed in blocks which are connected to a movable table.
Claim 20
Dependent Claim
37 words
An apparatus according to claim 1 wherein said first and second shafts are secured together by a support member disposed between the shafts for supporting the shafts along their entire length when attached to a rigid structure.
Claim 21
Dependent Claim
27 words
An apparatus according to claim 19 wherein said support member includes a first portion coupled to said shafts and a second portion which supports the first portion.
Claim 22
Dependent Claim
15 words
An apparatus according to claim 20 wherein the support member is a two piece member.
Claim 23
Dependent Claim
14 words
An apparatus according to claim 19 wherein the support member is a unitary member.
Claim 24
Dependent Claim
15 words
An apparatus according to claim 19 wherein the support member is a two piece member.
References Cited (Backward Citations)
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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) | 1991-12-06 | 1992-06-06 | 1992-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-06 | 1996-06-06 | 1996-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-06 | 2000-06-06 | 2000-12-06 | $7700.00 | Window Closed / Lapsed |