Patent US3585869A successfully refreshed from Google Patents.
US3585869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw and socket mechanism
Assignee: SKF AB
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Filing: 1969-06-27
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Granted: 1971-06-22
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Expires: 1989-06-27
Abstract
Abstract A device comprising a screw and a nut-forming tapped socket operatively interconnected by a set of externally screw-threaded planet rollers simultaneously engaging with their threads those of said screw and said socket, characterized in that each planet roller comprises gear teeth meshing simultaneously on the one hand with teeth carried by the socket and on the other hand with the teeth of a ring operatively connected with the screw, said toothed ring being so connected to the screw that it is positively held against rotation with respect to said screw but allow to move axially in relation thereto.
Inventors
- 👤 Pierre Lemor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:51
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2247; F16H25/2252; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19702; Y10T74/19744; Y10T74/19781; Y10T74/19791; Y10T74/19795
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
165 words
A mechanism for transforming a rotational movement into a translational movement providing a constant low-value feed per revolution comprising an externally threaded screw member, a nut member forming an internally threaded socket, a pair of annular flanges, a plurality of externally screw-threaded planet rollers disposed between said screw member and said nut member in meshing engagement therewith and rotatably journaled in said annular flanges, the roller threads having the same helix angle as the socket threads, each of said planet rollers having at least one set of teeth in meshing engagement with a first set of complementary internal teeth in said socket, a ring member surrounding said screw, means for positively holding said ring member against rotation in relation to said screw while permitting translational movement of said ring member and a plurality of planet pinions rotatably mounted on one of said annular flanges in meshing engagement with a second set of teeth of said socket member and with external teeth of said ring member.
Claim 2
Dependent Claim
165 words
A mechanism for transforming a rotational movement into a translational movement providing a constant low-value feed per revolution comprising an externally threaded screw member, a nut member forming an internally threaded socket, a pair of annular flanges, a plurality of externally screw-threaded planet rollers disposed between said screw member and said nut member in meshing engagement therewith and rotatably journaled in said annular flanges, the roller threads having the same helix angle as the socket threads, each of said planet rollers having at least one set of teeth in meshing engagement with a first set of complementary internal teeth in said socket, a ring member surrounding said screw, means for positively holding said ring member against rotation in relation to said screw while permitting translational movement of said ring member and a plurality of planet pinions rotatably mounted on one of said annular flanges in meshing engagement with a second set of teeth of said socket member and with external teeth of said ring member.
Claim 3
Dependent Claim
36 words
A mechanism as claimed in claim 1, including means defining at least one longitudinally extending groove in said screw member and at least one member connected to said ring member in sliding engagement in said groove.
Claim 4
Dependent Claim
28 words
A mechanism as claimed in claim 1 including a third annular flange confronting one of said flanges of said pair and in which said planet pinions are journaled.
References Cited (Backward Citations)
US3214991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |