US3775715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic system for relays
Assignee: Siemens AG
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Filing: 1972-05-31
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Granted: 1973-11-27
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Expires: 1992-05-31
Abstract
Abstract A magnetic system for relays, particularly poled relays, wherein at least one pole shoe covering a portion of a pole surface of a permanent magnet guides the magnetic flow of a particular region of the magnet primarily through a main armature, while the magnetic flow from another particular region of the permanent magnet is guided primarily by way of an auxiliary armature.
Inventors
- 👤 W Bosch
- 👤 G Sticker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:54
CPC Classifications
H; H01; H01H; H01H51/00; H01H51/22; H01H51/2236
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
252 words
A magnetic system for a relay having two stable switching positions, comprising: coil means for excitation by a direct current of either polarity to produce a respective magnetic current along the direction of the longitudinal axis of said coil means; a main pole at one end of said coil means and an auxiliary pole at the other end of said coil means; permanent magnet means for holding said system in said stable positions, said permanent magnet means having a surface disposed adjacent said auxiliary pole and including an opposite parallel surface defining first and second portions; a yoke disposed adjacent and extending over the length of said coil means, said yoke including a pole shoe partially covering said opposite surface of and magnetically connected to said first portion of said permanent magnet means; and armature means including a main armature and an auxiliary armature, said main armature disposed adjacent said coil means and said yoke and included in a main permanent magnetic circuit which includes said coil means, said first portion of said permanent magnet means and said yoke and said pole shoe, said auxiliary armature disposed adjacent said second portion of said permanent magnet means and included in an auxiliary magnetic circuit which includes said second portion of said permanent magnet means, said permanent magnet means poled to produce magnetic current directions in said main and auxiliary magnetic circuits which are respectively aided and opposed in response to excitation of said coil means by a direct current of a given polarity.
Claim 2
Dependent Claim
252 words
A magnetic system for a relay having two stable switching positions, comprising: coil means for excitation by a direct current of either polarity to produce a respective magnetic current along the direction of the longitudinal axis of said coil means; a main pole at one end of said coil means and an auxiliary pole at the other end of said coil means; permanent magnet means for holding said system in said stable positions, said permanent magnet means having a surface disposed adjacent said auxiliary pole and including an opposite parallel surface defining first and second portions; a yoke disposed adjacent and extending over the length of said coil means, said yoke including a pole shoe partially covering said opposite surface of and magnetically connected to said first portion of said permanent magnet means; and armature means including a main armature and an auxiliary armature, said main armature disposed adjacent said coil means and said yoke and included in a main permanent magnetic circuit which includes said coil means, said first portion of said permanent magnet means and said yoke and said pole shoe, said auxiliary armature disposed adjacent said second portion of said permanent magnet means and included in an auxiliary magnetic circuit which includes said second portion of said permanent magnet means, said permanent magnet means poled to produce magnetic current directions in said main and auxiliary magnetic circuits which are respectively aided and opposed in response to excitation of said coil means by a direct current of a given polarity.
Claim 3
Dependent Claim
28 words
A magnet system according to claim 1, wherein said auxiliary pole includes a plate of soft magnetic material disposed between said permanent magnet means and said coil means.
Claim 4
Dependent Claim
36 words
A magnet system according to claim 1, wherein said permanent magnet is in the shape of a plate and polarized in the direction of the thickness of the plate and the axis of said coil means.
Claim 5
Dependent Claim
35 words
A magnet system according to claim 1, wherein said yoke is U-shaped, said pole shoe being the central leg of the U, and said coil means is disposed between the other legs of the U.
Claim 6
Dependent Claim
33 words
A magnet system according to claim 1, wherein said main and auxiliary poles include respective pole pieces and said main pole piece and said yoke define operational air gaps with said main armature.
Claim 7
Dependent Claim
40 words
A magnet system according to claim 5, wherein said auxiliary armature is arranged at approximately a right angle with said main armature and defines operational air gaps with said second portion of said permanent magnet and said auxiliary pole piece.
Claim 8
Dependent Claim
22 words
A magnet system according to claim 1, wherein said armature means includes a single piece which comprises said main and auxiliary armatures.
Claim 9
Dependent Claim
26 words
A magnetic system according to claim 1, wherein said auxiliary pole comprises a pole piece disposed adjacent and defining an air gap with said auxiliary armature.
Claim 10
Dependent Claim
26 words
A magnet system according to claim 1, wherein said auxiliary armature includes an angularly shaped portion for embracing said second portion of said permanent magnet means.
Claim 11
Dependent Claim
22 words
A magnet system according to claim 1, wherein said permanent magnet means comprises a separate permanent magnet for each of said portions.
Claim 12
Dependent Claim
196 words
In a magnet system for a bistable polar relay of the type having a coil with oppositely disposed poles energizable in either direction longitudinally of the coil to place the relay in its respective stable states, and at least one permanent magnet for holding the relay in a stable state, and wherein the magnetic current flow resulting from the superposition of the excitation magnet current and the permanent magnetic current become effective partially via a main armature and partially via an auxiliary armature, in combination therewith the improvement comprising: at least one pole shoe covering and magnetically connected with only a portion of one pole surface of the permanent magnet and extending to a point adjacent said main armature, whereby the magnetic current flow of a first region of said magnet is guided primarily via the main armature and the magnetic current flow from a second region of said magnetic is guided primarily via the auxiliary armature, said permanent magnet poled to produce magnetic current directions in the first and second regions and the associated main and auxiliary armatures which are respectively aided and opposed in response to energization of said coil in a given direction.
Claim 13
Dependent Claim
196 words
In a magnet system for a bistable polar relay of the type having a coil with oppositely disposed poles energizable in either direction longitudinally of the coil to place the relay in its respective stable states, and at least one permanent magnet for holding the relay in a stable state, and wherein the magnetic current flow resulting from the superposition of the excitation magnet current and the permanent magnetic current become effective partially via a main armature and partially via an auxiliary armature, in combination therewith the improvement comprising: at least one pole shoe covering and magnetically connected with only a portion of one pole surface of the permanent magnet and extending to a point adjacent said main armature, whereby the magnetic current flow of a first region of said magnet is guided primarily via the main armature and the magnetic current flow from a second region of said magnetic is guided primarily via the auxiliary armature, said permanent magnet poled to produce magnetic current directions in the first and second regions and the associated main and auxiliary armatures which are respectively aided and opposed in response to energization of said coil in a given direction.
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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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |