US3889165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear and rotary actuator
Assignee: Telemecanique SA
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Filing: 1974-01-31
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Granted: 1975-06-10
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Expires: 1994-01-31
Abstract
Abstract Actuator equipped with variable-reluctance motors, characterized by a magnetic component which can move in rotation and having on a first part of its surface a first series of channels perpendicular to the axis of rotation and on a second part of its surface a second series of channels parallel to said axis, and coiled pole pieces comprising teeth whose pitch corresponds to that of the channels. Applied to the construction of manipulators and to controlling the movements of machine tool components.
Inventors
- 👤 Van Trong Nguyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:21
CPC Classifications
H; H02; H02K; H02K37/00; H02K37/02; H02K37/06; H02K37/04; H02K41/00; H02K41/02; H02K41/03; H02K2201/00; H02K2201/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
Actuator device having a movable component adapted for moving in rotation about an axis and in translation along said axis, said movable component being made of a magnetic material and having on a first portion of its surface a first series of elongated channels substantially perpendicular to the said axis and, on a second portion of its surface, a second series of elongated channels substantially parallel to the said axis, first and second sets of magnetic pole pieces respectively equipped with first and second sets of coils and comprising teeth whose pitch corresponds to that of the channels being arranged opposite said respective first and second surface portions and supply means for separately energizing said first and second sets of coils, said supply means being adapted for sequentially energizing the coils of each set and for simultaneously energizing the coils of each set.
Claim 2
Dependent Claim
143 words
Actuator device having a movable component adapted for moving in rotation about an axis and in translation along said axis, said movable component being made of a magnetic material and having on a first portion of its surface a first series of elongated channels substantially perpendicular to the said axis and, on a second portion of its surface, a second series of elongated channels substantially parallel to the said axis, first and second sets of magnetic pole pieces respectively equipped with first and second sets of coils and comprising teeth whose pitch corresponds to that of the channels being arranged opposite said respective first and second surface portions and supply means for separately energizing said first and second sets of coils, said supply means being adapted for sequentially energizing the coils of each set and for simultaneously energizing the coils of each set.
Claim 3
Dependent Claim
41 words
Actuator device in accordance with claim 1, wherein said movable component is cylindrical, the two series of channels being arranged on the external surface of the said cylindrical movable component, on two portions of the said external surface in axial succession.
Claim 4
Dependent Claim
36 words
Actuator device in accordance with claim 1, wherein said movable component is cylindrical, the two series of channels being arranged on two portions of the external surface of the said cylindrical movable component in angular succession.
Claim 5
Dependent Claim
62 words
Actuator in accordance with claim 1, wherein the movable component is a cylindrical tube, the second series of channels being arranged on the external surface of the said tube, while the first series of channels is arranged on the inside surface of the said tube, and a guide member positioned inside the movable component, supporting the first set of magnetic pole pieces.
Claim 6
Dependent Claim
52 words
Actuator in accordance with claim 4, wherein the first series of channels is formed in a thread with a square profile and the teeth of the first set of pole pieces are inclined in relation to the axis of the cylindrical tube by a value equal to the angle of the helix.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |