Patent US4237345A successfully refreshed from Google Patents.
US4237345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer with integral reed contact
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1979-01-15
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Granted: 1980-12-02
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Expires: 1999-01-15
Abstract
Abstract A magnetically operated switch especially useful in telephone applications includes a transformer having a plurality of windings on an E-frame core and a reed switch magnetically coupled to the core by a plurality of high permeability strips which are placed in juxtaposition with the core and which have rolled end portions for supportably receiving the reed switch. The switch may be used in a hybrid junction for dial pulse detection.
Inventors
- 👤 Berton E. Dotter, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:33
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
In a telephone system including a transmission line and a transmitter receiver, a circuit for detecting dial pulses comprising a transformer having a plurality of windings and a core on which said windings are mounted and magnetically coupled, means connecting the transmission line to a winding, means connecting the transmitter receiver to a winding, a magnetically operated reed switch, and means for mounting and magnetically coupling said reed switch to said core whereby said reed switch operably responds to said dial pulses, said means for mounting and magnetically coupling said reed switch comprising a plurality of planar strips of magnetic material, said planar strips being adjustably positioned in juxtaposition with said core for variably coupling magnetic flux from said core to said reed switch, each of said strips including a rolled end portion for supportably receiving said reed switch.
Claim 2
Dependent Claim
139 words
In a telephone system including a transmission line and a transmitter receiver, a circuit for detecting dial pulses comprising a transformer having a plurality of windings and a core on which said windings are mounted and magnetically coupled, means connecting the transmission line to a winding, means connecting the transmitter receiver to a winding, a magnetically operated reed switch, and means for mounting and magnetically coupling said reed switch to said core whereby said reed switch operably responds to said dial pulses, said means for mounting and magnetically coupling said reed switch comprising a plurality of planar strips of magnetic material, said planar strips being adjustably positioned in juxtaposition with said core for variably coupling magnetic flux from said core to said reed switch, each of said strips including a rolled end portion for supportably receiving said reed switch.
Claim 3
Dependent Claim
65 words
A circuit for detecting dial pulses as defined by claim 1 wherein said core comprises a plurality of E laminates having at least two outer legs and one inner leg, one of said strips being placed in juxtaposition with an outer leg of said E laminates and at least one of said strips being placed in juxtaposition with said center leg of said E laminates.
Claim 4
Dependent Claim
104 words
For use in a telephone system application, magnetically operated switch means comprising a transformer having a plurality of windings and a core on which said windings are mounted and magnetically coupled, a magnetically operated reed switch, a plurality of planar strips of magnetic material for mounting and magnetically coupling said reed switch to said core whereby said reed switch responds to magnetic flux within said core, said strip being adjustably positioned in juxtaposition with said core for variably coupling magnetic flux from said core to said reed switch and each of said strips includes a rolled end portion for supportably receiving said reed switch.
Claim 5
Dependent Claim
104 words
For use in a telephone system application, magnetically operated switch means comprising a transformer having a plurality of windings and a core on which said windings are mounted and magnetically coupled, a magnetically operated reed switch, a plurality of planar strips of magnetic material for mounting and magnetically coupling said reed switch to said core whereby said reed switch responds to magnetic flux within said core, said strip being adjustably positioned in juxtaposition with said core for variably coupling magnetic flux from said core to said reed switch and each of said strips includes a rolled end portion for supportably receiving said reed switch.
Claim 6
Dependent Claim
61 words
A magnetically operated switch means as defined by claim 3 wherein said core comprises a plurality of E laminates having at least two outer legs and one inner leg, one of said strips being placed in juxtaposition with an outer leg of said core and at least one of said strips placed in juxtaposition with said center leg of said core.
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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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |