Patent US3711758A successfully refreshed from Google Patents.
US3711758A
Expired / Lapsed
US
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Device for remote-controlled reciprocal emission, transmission and reception of mechanical information
Assignee: Individual
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Filing: 1971-06-21
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Granted: 1973-01-16
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Expires: 1991-06-21
Abstract
Abstract In a device for the remote-controlled reciprocal emission, transmission and reception of mechanical information between two identical modules, each module comprises a position reader provided with a movable index which converts into successive electrical pulses an item of mechanical information relating to the motion of an actuating member which is associated with the index, a calibrated-compression spring mounted between a supporting carriage and the index so as to compress said spring, a mechanism for controlling the displacement of the supporting carriage parallel to the movement of the index and an indicator for indicating the direction of said movement, the mechanism for controlling one of the modules being actuated by the position reader and direction indicator which are associated with the other module and conversely while causing the displacement of the corresponding supporting carriage so that the initial elongation of the spring should tend to be restored.
Inventors
- 👤 G Lelandais
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:22
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
148 words
A device for the remote-controlled reciprocal emission, transmission and reception of mechanical information between two identical modules, wherein each module comprises a position reader provided with a movable index which converts into successive electrical pulses an item of mechanical information relating to the motion of an actuating member which is associated with said index, a flexible calibrated-compression component mounted between a supporting carriage and said index so as to compress said flexible component, a mechanism for controlling the displacement of said supporting carriage parallel to the movement of the index and a direction indicator for indicating the direction of said movement and mechanism for controlling one of said modules actuated by said position reader and by said direction indicator of the other of said modules and for causing the displacement of the corresponding one of said supporting carriages whereby the initial elongation of said flexibLe component is reduced.
Claim 2
Independent Claim
148 words
A device for the remote-controlled reciprocal emission, transmission and reception of mechanical information between two identical modules, wherein each module comprises a position reader provided with a movable index which converts into successive electrical pulses an item of mechanical information relating to the motion of an actuating member which is associated with said index, a flexible calibrated-compression component mounted between a supporting carriage and said index so as to compress said flexible component, a mechanism for controlling the displacement of said supporting carriage parallel to the movement of the index and a direction indicator for indicating the direction of said movement and mechanism for controlling one of said modules actuated by said position reader and by said direction indicator of the other of said modules and for causing the displacement of the corresponding one of said supporting carriages whereby the initial elongation of said flexibLe component is reduced.
Claim 3
Dependent Claim
86 words
A device according to claim 1, wherein the mechanism for controlling each module comprises a precision worm-screw which cooperates with a nut carried by the supporting carriage and driven in rotation by a stepping motor, the thread of the worm-screw and the steps of the motor being selected so as to ensure that the displacement of the supporting carriage in respect of one step of the motor should be substantially equal to the displacement of the movable index of the position reader between two successive pulses.
Claim 4
Dependent Claim
98 words
A device according to claim 1, wherein the position reader comprises an inductive circuit constituted by a fixed winding which is wound around a stack of identical and parallel magnetic laminations separated by insulating strips and extending in planes at right angles to the direction of displacement of the movable index, and an induction head carried by said movable index and comprising at least one magnetic element fitted with an induction coil, said magnetic element being provided with a discontinuity forming an air-gap which is adapted to move in the immediate vicinity of the stack of magnetic laminations.
Claim 5
Dependent Claim
69 words
A device according to claim 3, wherein the laminations of the inductive circuit are equal in thickness to the insulating strips provided between the successive laminations, the induction head being made up of a plurality of adjacent magnetic elements each having an air-gap, the distance between two air-gaps within two adjacent elements being in a simple ratio with respect to the distance between two laminations in the inductive circuit.
Claim 6
Dependent Claim
29 words
A device according to claim 1, wherein the position reader is constituted by a potentiometric control system in which the sliding contact is rigidly fixed to the movable index.
Claim 7
Dependent Claim
31 words
A device according to claim 1, wherein the position reader is constituted by a graduated rule in which the lines are counted by a photoelectric cell carried by the movable index.
Claim 8
Dependent Claim
104 words
A device according to claim 1, wherein each module comprises within an external protective casing antifriction bearings for centering and supporting the worm-screw in the axis of the casing whose end-walls support the stepping motor for actuating said worm-screw and a moving weight-head which constitutes the index of the position reader, said weight-head being capable of sliding freely over a bushing of the supporting carriage and provided in the opposite faces thereof with bearing recesses for the ends of calibrated springs which are stressed solely in compression and the other ends of which are applied against two transverse annular shoulders formed on the bushing.
Claim 9
Dependent Claim
44 words
A device according to claim 7, wherein the reader-actuating member is constituted by at least one control tie-rod which passes through the springs of the weight-head and the annular shoulders of the bushing, said tie-rod being provided with an extension outside the outer casing.
Claim 10
Dependent Claim
39 words
A device according to claim 7, wherein the weight-head is rigidly fixed to two parallel actuating tie-rods associated with four springs which are arranged in opposition in pairs on a common tie-rod and stressed in compression simultaneously in pairs.
Claim 11
Dependent Claim
57 words
A device according to claim 7, wherein the transverse annular shoulders of the bushing are provided with projecting portions having the shape of triangular prisms in which the external edges located in a plane which passes through the axis of the worm-screw are adapted to engage in longitudinal grooves formed in the internal surface of the casing.
Claim 12
Dependent Claim
29 words
A device according to claim 1, wherein the direction indicator is constituted by a magnetic rod joined to the movable index and capable of displacement within an induction coil.
Claim 13
Dependent Claim
80 words
A device according to claim 1, wherein each module comprises opposed calibrated springs mounted between a weight-head which is capable of moving about a shaft and a component which forms a supporting carriage, said springs being disposed along two arcs having the same circumference which is ceNtered on the axis of the weight-head, the driving member being directly or indirectly connected to said weight-head and to a position reader so as to initiate rotation of said weight-head about its axis.
Claim 14
Dependent Claim
44 words
A device according to claim 12, wherein the component which forms a supporting carriage comprises an external set of teeth in cooperating relation with a pinion and said pinion is rigidly fixed to the shaft of a stepping motor which constitutes the control mechanism.
Claim 15
Dependent Claim
21 words
A device according to claim 12, wherein the position reader is constituted by an electromagnetic transmitter of the selsyn motor type.
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |