US3581260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flange for electromagnetic coil
Assignee: Italtel SpA
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Filing: 1969-10-13
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Granted: 1971-05-25
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Expires: 1989-10-13
Abstract
Abstract A spool body for a relay coil is formed from a ferromagnetic core bounded by two nonconductive flange plates; at least one of these plates has a pair of notches, tangential to the core, for the ends of each winding to be wound thereon and a pair of depressions adjacent these notches on the outer plate surface remote from the core to receive these wire ends for soldering to respective terminals at locations sheltered from the coil winding or windings.
Inventors
- 👤 Pio Andreis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:03
CPC Classifications
H; H01; H01F; H01F5/00; H01F5/02; H01H; H01H50/00; H01H50/44; H01H2050/446
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
A spool body for an electromagnetic coil, comprising a ferromagnetic core and a flange plate of insulating material with a front face adjoining said core at one end thereof, said flange plate being formed with at least one pair of notches extending inwardly along said front face from opposite plate edges along at least one line substantially tangent to said core to receive respective wire ends from a winding on said core, each of said notches completely penetrating said flange plate at the respective plate edge and decreasing in depth toward said core with only partial penetration thereof in the vicinity of sAid core, said flange plate having a rear face formed with at least one pair of depressions adjacent said plate edges and communicating with the penetrating portions of said notches for sheltering said wire ends from contact with the body of said winding.
Claim 2
Dependent Claim
145 words
A spool body for an electromagnetic coil, comprising a ferromagnetic core and a flange plate of insulating material with a front face adjoining said core at one end thereof, said flange plate being formed with at least one pair of notches extending inwardly along said front face from opposite plate edges along at least one line substantially tangent to said core to receive respective wire ends from a winding on said core, each of said notches completely penetrating said flange plate at the respective plate edge and decreasing in depth toward said core with only partial penetration thereof in the vicinity of sAid core, said flange plate having a rear face formed with at least one pair of depressions adjacent said plate edges and communicating with the penetrating portions of said notches for sheltering said wire ends from contact with the body of said winding.
Claim 3
Dependent Claim
39 words
A spool body as defined in claim 1 wherein said flange plate is further provided with at least one pair of peripheral incisions adjoining said depressions to make the tips of said wire ends accessible from said front face.
Claim 4
Dependent Claim
16 words
A spool body as defined in claim 2 wherein said incisions are shorter than said notches.
Claim 5
Dependent Claim
48 words
A spool body as defined in claim 2, further comprising a supporting plate adjoining the rear face of said flange plate and at least one pair of terminal members projecting rearwardly from said supporting plate while having forward extremities accessible through said incisions for soldering to said tips.
Claim 6
Dependent Claim
21 words
A spool body as defined in claim 1 wherein said notches completely penetrate said flange plate over substantially half their length.
Claim 7
Dependent Claim
33 words
A spool body as defined in claim 1 wherein said flange plate is formed with a socket for said core, said socket including an insulating collar on said front plate surrounding said core.
Claim 8
Dependent Claim
17 words
A spool body as defined in claim 6 wherein said collar is integral with said flange plate.
Claim 9
Dependent Claim
72 words
A spool body as defined in claim 1 wherein said flange plate is formed on said front face with a second pair of notches similar to the first pair but spaced therefrom by substantially the diameter of said core, said rear face being formed with a second pair of depressions adjacent the penetrating portions of said second pair of notches for sheltering the wire ends of a second winding on said core.
Claim 10
Dependent Claim
23 words
A spool body as defined in claim 8 wherein the notches of said pairs terminate close to diametrically opposite points of said core.
Claim 11
Dependent Claim
25 words
A spool body as defined in claim 1 wherein said notches are rearwardly closed, in the vicinity of said core, by forwardly converging wall surfaces.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |