US3753176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching matrice crosspoint
Assignee: International Standard Electric Corp
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Filing: 1971-11-26
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Granted: 1973-08-14
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Expires: 1991-11-26
Abstract
Abstract A miniature crosspoint having magnetic latching pairs of contacts is disclosed. Each pair of contacts includes a remanent magnetic conductor serving as a rigid core and a non-remanent magnetic conductive reed. The remanent magnetic conductors are paired with a pole piece to form an inverted U-shaped arrangement. Series fluxes are generated in the cores, and looped through the cores and the pole piece, in contacts not forming a pathway through the crosspoint switch, whereas parallel fluxes are generated in the cores and looped instead through the reeds which are attracted to contact the cores in a selected crosspoint.
Inventors
- 👤 A Regnier
- 👤 F Silerme
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:17
CPC Classifications
H; H01; H01H; H01H67/00; H01H67/22; H01H67/26
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
232 words
A crosspoint comprising at least one pair of contacts with magnetic latching, each contact including a rigid inverted Lshaped electrically conductive core with at least a portion thereof constituting a remanent magnetic area and a flexible reed element made of electrically conductive, non-remanent magnetic material disposed proximate the top portion of said inverted Lshaped core, the two L-shaped cores of said at least one pair of contacts being arranged together in substantially an inverted U formation, the legs of which formation pass untouching through a pole piece arranged so as to form with said cores substantially an inverted U formation, and further comprising a coil arrangement disposed about each core on the part thereof constituting the leg portions of said inverted U formation, the arrangement of said coils and said cores being such as to provide that magnetic fluxes created in each core by its associated coil arrangement cause one of two conditions to occur in said at least one pair of contacts: (1) that said contacts achieve a rest condition as a resuLt of the magnetic fluxes closing through a series path constituting the pair of cores and the pole piece; (2) that said contacts achieve a work condition wherein the reeds are attracted to and contacting the respective cores as a result of the magnetic fluxes closing through said cores and the respective flexible reeds, constituting a parallel flux condition.
Claim 2
Dependent Claim
232 words
A crosspoint comprising at least one pair of contacts with magnetic latching, each contact including a rigid inverted Lshaped electrically conductive core with at least a portion thereof constituting a remanent magnetic area and a flexible reed element made of electrically conductive, non-remanent magnetic material disposed proximate the top portion of said inverted Lshaped core, the two L-shaped cores of said at least one pair of contacts being arranged together in substantially an inverted U formation, the legs of which formation pass untouching through a pole piece arranged so as to form with said cores substantially an inverted U formation, and further comprising a coil arrangement disposed about each core on the part thereof constituting the leg portions of said inverted U formation, the arrangement of said coils and said cores being such as to provide that magnetic fluxes created in each core by its associated coil arrangement cause one of two conditions to occur in said at least one pair of contacts: (1) that said contacts achieve a rest condition as a resuLt of the magnetic fluxes closing through a series path constituting the pair of cores and the pole piece; (2) that said contacts achieve a work condition wherein the reeds are attracted to and contacting the respective cores as a result of the magnetic fluxes closing through said cores and the respective flexible reeds, constituting a parallel flux condition.
Claim 3
Dependent Claim
30 words
The crosspoint according to claim 1 wherein said contacts are sealed in an insulator capsule with the reeds and the cores having connections penetrating through a wall of said capsule.
Claim 4
Dependent Claim
186 words
In a crosspoint arrangement with magnetic latching, the combination comprising 2m contacts arranged in an insulator capsule and divided into m pairs of contacts, m being an integer greater than zero, wherein each contact includes a rigid core element made of electric electrically conductive material and having at least a portion thereof composed of a remanent magnetic material, and a flexible reed element made of electrically conductive non-remanent magnetic material arranged to be movable for contacting the associated core, wherein each of said m contact pairs provides for one of its reeds to be arranged with one of the reeds of each of the other contact pairs in a first integral structure and the other of its reeds to be arranged with the other of the reeds of each of the other contact pairs in a second integral structure, and further comprising a rod-like rigid carrier element made of electrically conductive material associated with each of said first and second integral structures of reeds, said rods and said 2m cores being sealed in the base of the capsule so as to form projections outside the capsule.
Claim 5
Dependent Claim
186 words
In a crosspoint arrangement with magnetic latching, the combination comprising 2m contacts arranged in an insulator capsule and divided into m pairs of contacts, m being an integer greater than zero, wherein each contact includes a rigid core element made of electric electrically conductive material and having at least a portion thereof composed of a remanent magnetic material, and a flexible reed element made of electrically conductive non-remanent magnetic material arranged to be movable for contacting the associated core, wherein each of said m contact pairs provides for one of its reeds to be arranged with one of the reeds of each of the other contact pairs in a first integral structure and the other of its reeds to be arranged with the other of the reeds of each of the other contact pairs in a second integral structure, and further comprising a rod-like rigid carrier element made of electrically conductive material associated with each of said first and second integral structures of reeds, said rods and said 2m cores being sealed in the base of the capsule so as to form projections outside the capsule.
Claim 6
Dependent Claim
155 words
The crosspoint according to claim 3 further comprising 2m control coils mounted on the 2m cores in one-to-one correspondence, each coil comprising a pair of windings surrounding the core part located outside of the capsule, the crosspoint arrangement providing for connections to be made by means of conductive paths printed on a printed circuit board, with said board having apertures therein through which said cores and said rod-like elements pass, said board being arranged between the capsule and the control coils, with the board conductive paths being printed on the board side facing away from the capsule and each printed conductor being individually connected to one of the cores, rods or coil terminals in accordance with a predetermined configuration, and further comprising a magnetic shield including a pole piece of non-remanent magnetic material, having apertures therein for the ends of at least the cores to pass therethrough without contact between the shield and the cores.
Claim 7
Dependent Claim
47 words
The crosspoint according to claim 4 wherein each core has a contact area for enabling the associated reed to make contact therewith and forms a contact with the associated reed, wherein the 2m cores form 2m contact areas arranged in a single plane, called the prop plane.
Claim 8
Dependent Claim
47 words
The crosspoint according to claim 5 wherein the 2m reeds which contact the 2m cores are, in the rest position, in a plane parallel to the prop plane, with the distance from the reed face plane to the prop plane being equal to the contact magnetic gap.
Claim 9
Dependent Claim
78 words
The crosspoint according to claim 6 wherein the configuration of the coils, each composed of two windings, and of the control pulses are designed for a coordinate control of the crosspoint mounted in a matrix, the two contacts of a pair of contacts being in the same condition at a time, at rest when the remanent magnetizations of their respective cores are in series, and at work when the remament magnetizations of their respective cores are in parallel.
Claim 10
Dependent Claim
62 words
The crosspoint according to claim 7 wherein the individual ones of each pair of cores are substantially L-shaped and curved one towards the other in substantially a U configuration inside the glass capsule, with the ends of the cores so arranged being on the same line for reducIng the length of the lines of force therebetween when their magnetizations are in series.
Claim 11
Dependent Claim
80 words
The crosspoint according to claim 8 wherein the m reeds arranged with a rod are arranged in pairs located in opposite sectors of the plane which said reed arrangement defines parallel to the prop plane, the arrangement of said reeds and said rods being such that the pair of reeds which form along with the associated pair of cores a pair of contacts have one such reed connected to one rod and the other reed connected to the other rod.
Claim 12
Dependent Claim
42 words
The crosspoint according to claim 9 wherein each core comprises two ends, one being free and carrying the contact area parallel to the prop plane and the other one being normal to the prop plane and sealed in the glass capsule base.
Claim 13
Dependent Claim
36 words
The crosspoint according to claim 10 wherein each reed has its longitudinal axis normal to the plane defined by its corresponding core, with each reed having the same relative position with respect to the corresponding core.
Claim 14
Dependent Claim
40 words
The crosspoint according to claim 11 wherein the m reeds carried by a rod are made of a material different from the rod material, with said reeds being electrically welded to the rod so as to form a single piece.
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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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |