US3577796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spindle guide
Assignee: NIRONA WERKE KG
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Filing: 1969-08-11
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Granted: 1971-05-04
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Expires: 1989-08-11
Abstract
Abstract An antifriction nut and threaded spindle assembly uses a plurality of continuously recirculating roller bodies traveling through a plurality of individually continuous ways. The ways are positioned sequentially along the axis of the spindle. The ways are each formed by a groove in the nut body and a retainer strip surrounding the groove. That portion of the strip adjacent the spindle fits between the lands of the spindle threads. The nut is split and a clamping ring, whole or split, circumscribes the nut for compressing the nut about the spindle for control of play between the nut and spindle. In one embodiment the nut is formed in two halves having a plurality of the individually continuous ways in each half. The halves (as seen in cross section) may have an inner curvature formed about the axis of the spindle and outer curvature formed about axes spaced from the spindle axis in the direction of the respective nut half. In some embodiments the roller bodies are each of truncated conical configuration with the small end directed toward the spindle when in operative contact with the spindle. For heavy loads the truncated conical roller bodies meet the lands of the spindle threads in a line contact such that the lines extended, along with the conical axis, meet at a point on the spindle axis. The large end of the truncated conical bodies is concave and in the return portion of the way contact a crown on the portion of the nut defining the return portion of the way.
Inventors
- 👤 Werner Eissfeldt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:11
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19749; Y10T74/19753
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
214 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, means bearing against said nut device for compressing said nut device radially of said axis to avoid bearing play between the devices, said means comprising a truncated conical exterior configuration of the nut device, a clamping ring which fits snugly about said exterior, and means interconnecting said ring and said nut device for forcing said ring along said exterior of said device in the direction of the larger portion of said truncated conical exterior.
Claim 2
Dependent Claim
214 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, means bearing against said nut device for compressing said nut device radially of said axis to avoid bearing play between the devices, said means comprising a truncated conical exterior configuration of the nut device, a clamping ring which fits snugly about said exterior, and means interconnecting said ring and said nut device for forcing said ring along said exterior of said device in the direction of the larger portion of said truncated conical exterior.
Claim 3
Dependent Claim
46 words
In the combination of claim 1, wherein said clamping ring is formed of a plurality of parts and said nut device is formed of a corresponding number of parts, form fit guide means undetachably connecting each part of tHe ring to a respective nut device part.
Claim 4
Dependent Claim
252 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said nut device comprising a main body with a continuous slot with the main body about the slot defining one side of one of the ways, and a closed retainer strip circumscribing said main body at said slot and defining an opposite side of said way, said retainer strip at the side of said main body adjacent said spindle having a dimension, as measured parallel to said axis, being no greater than the distance between said lands and being positioned in said spindle groove, whereby said roller bodies will be trapped in said way between the main body and the retainer strip and at said adjacent side will bear against said lands.
Claim 5
Dependent Claim
252 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said nut device comprising a main body with a continuous slot with the main body about the slot defining one side of one of the ways, and a closed retainer strip circumscribing said main body at said slot and defining an opposite side of said way, said retainer strip at the side of said main body adjacent said spindle having a dimension, as measured parallel to said axis, being no greater than the distance between said lands and being positioned in said spindle groove, whereby said roller bodies will be trapped in said way between the main body and the retainer strip and at said adjacent side will bear against said lands.
Claim 6
Dependent Claim
49 words
In the combination of claim 3, wherein said strip is formed in two parts, one part extending along said side of the main body adjacent said spindle, the other part encompassing the remainder of the way and having ends at said side of the main body adjacent said spindle.
Claim 7
Dependent Claim
251 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said roller bodies having a truncated conical exterior configuration, said lands having tapered side faces which meet in line contact with each truncated conical roller body, and each roller body having a conical axis, the arrangement being such that the extensions of the lines of contact of a roller body with the lands and the extension of that roller body axis intersect at a common point positioned on said spindle device axis, each of said roller bodies having a large end and a small end, said large end being concave, said large end abutting a side of said way, said side of said enclosed way having a crown extending longitudinally therealong.
Claim 8
Dependent Claim
251 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said roller bodies having a truncated conical exterior configuration, said lands having tapered side faces which meet in line contact with each truncated conical roller body, and each roller body having a conical axis, the arrangement being such that the extensions of the lines of contact of a roller body with the lands and the extension of that roller body axis intersect at a common point positioned on said spindle device axis, each of said roller bodies having a large end and a small end, said large end being concave, said large end abutting a side of said way, said side of said enclosed way having a crown extending longitudinally therealong.
Claim 9
Dependent Claim
227 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arCuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said nut device comprising two separate nut halves, each of said halves having a plurality of said individually continuous ways with roller bodies therein, each nut half having an interior face and an exterior face, each interior face, as viewed in a cross section transverse to said axis, being curved about a point located on said axis, each exterior face, as viewed in a cross section transverse to said axis, being curved about a point spaced from said axis in the direction of the respective nut half.
Claim 10
Dependent Claim
227 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arCuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said nut device comprising two separate nut halves, each of said halves having a plurality of said individually continuous ways with roller bodies therein, each nut half having an interior face and an exterior face, each interior face, as viewed in a cross section transverse to said axis, being curved about a point located on said axis, each exterior face, as viewed in a cross section transverse to said axis, being curved about a point spaced from said axis in the direction of the respective nut half.
Claim 11
Dependent Claim
58 words
In the combination as set forth in claim 6, wherein each exterior face, as viewed in said transverse cross section extends through an arc greater than 180*, said combination including means bearing against said nut device for compressing said nut device radially of said axis to avoid bearing play between the devices, said means comprising two housing halves.
Claim 12
Dependent Claim
54 words
In the combination as set forth in claim 7, wherein the ratio of the arc formed by the inner curve to the arc formed by the outer curve is such that upon a variation of the internal diameter of the nut device due to clamping the circular shape of the inner arc is maintained.
Claim 13
Dependent Claim
120 words
In the combination of claim 7, in which said nut device comprises a main body with a continuous slot with the main body about the slot defining one side of one of the ways, and a closed retainer strip circumscribing said main body at said slot and defining an opposite side of said way, said retainer strip at the side of said main body adjacent said spindle having a dimension, as measured parallel to said axis, being no greater than the distance between said lands and being positioned in said spindle groove, whereby said roller bodies will be trapped in said way between the main body and the retainer strip and at said adjacent side will bear against said lands.
Claim 14
Dependent Claim
49 words
In the combination of claim 9, wherein said strip is formed in two parts, one part extending along said side of the main body adjacent said spindle, the other part encompassing the remainder of the way and having ends at said side of the main body adjacent said spindle.
Claim 15
Dependent Claim
246 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said nut device comprising two separate nut halves, each of which halves having a plurality of said individually continuous ways with roller bodies therein, means bearing against said nut device for compressing said nut device radially of said axis to avoid bearing play between the devices, said means comprising two housing halves, each nut half having a recess aligned with said axis and each housing half having a recess which mates with the respective nut half recess to form an aperture, and including a pin in each aperture respectively to lock the nut half to the respective housing half against rotation with respect to said axis.
Claim 16
Dependent Claim
246 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween and a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said ways being positioned sequentially with respect to each other along said axis, said roller bodies being positioned in and movable along said ways, said nut device comprising two separate nut halves, each of which halves having a plurality of said individually continuous ways with roller bodies therein, means bearing against said nut device for compressing said nut device radially of said axis to avoid bearing play between the devices, said means comprising two housing halves, each nut half having a recess aligned with said axis and each housing half having a recess which mates with the respective nut half recess to form an aperture, and including a pin in each aperture respectively to lock the nut half to the respective housing half against rotation with respect to said axis.
Claim 17
Dependent Claim
179 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween anD a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, said ways being positioned sequentially with respect to each other along said axis, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said nut device including a retainer strip extending the length of said halfway and positioned in a groove, said roller bodies being positioned in, movable along said ways, bearing against the lands at both sides of a groove, and along the halfway being between the retainer strip and the halfway.
Claim 18
Dependent Claim
179 words
In the combination of a spindle device formed about an axis and having a threaded exterior defined by lands with grooves therebetween anD a nut device about said spindle and which has a plurality of recirculating roller bodies interengaging said spindle and device, so that with relative rotation between the devices one device moves longitudinally along the axis with respect to the other device, the improvement comprising: said nut device being split parallel to said axis, said nut device defining a plurality of individually continuous ways for said roller bodies, said ways being positioned sequentially with respect to each other along said axis, each of said ways comprising a halfway adjacent said spindle and arcuately aligned with said threads and an enclosed way connecting the ends of the halfway, said nut device including a retainer strip extending the length of said halfway and positioned in a groove, said roller bodies being positioned in, movable along said ways, bearing against the lands at both sides of a groove, and along the halfway being between the retainer strip and the halfway.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |