US3792394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voice coil
Assignee: Individual
•
Filing: 1972-11-01
•
Granted: 1974-02-12
•
Expires: 1992-11-01
Abstract
Abstract Voice coil having a tubular coil carrier defining an outside face and an inside face, a coil including at least a forward pitch layer of turns on said outside face and a backward pitch layer of turns on said inside face and preferably window openings in said carrier in the zone covered by said layers.
Inventors
- 👤 J Bertagni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:05
CPC Classifications
H; H01; H01F; H01F5/00; H01F41/00; H01F41/02; H01F41/04; H04; H04R; H04R9/00; H04R9/02; H04R9/04; H04R9/046
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
122 words
A coil and coil carrier assembly for an electromagnetic assembly for sound transducers and the like, comprising a porous tubular coil carrier defining an outside face and an inside face, a coil mounted on said coil carrier and having at least a first layer of turns of wire defining a first winding arranged on the inside face of said coil carrier and at least a second layer of turns of wire defining a second winding arranged on the outside face of said coil carrier, said first and second windings at least partially facing each other, said second winding being coated with a resin which also extends into pores of said carrier adjacent said second winding to anchor said winding to said carrier.
Claim 2
Dependent Claim
122 words
A coil and coil carrier assembly for an electromagnetic assembly for sound transducers and the like, comprising a porous tubular coil carrier defining an outside face and an inside face, a coil mounted on said coil carrier and having at least a first layer of turns of wire defining a first winding arranged on the inside face of said coil carrier and at least a second layer of turns of wire defining a second winding arranged on the outside face of said coil carrier, said first and second windings at least partially facing each other, said second winding being coated with a resin which also extends into pores of said carrier adjacent said second winding to anchor said winding to said carrier.
Claim 3
Dependent Claim
21 words
A coil and coil carrier assembly according to claim 1, wherein said resin coats at least part of said first winding.
Claim 4
Dependent Claim
17 words
A coil and coil carrier assembly according to claim 1, wherein said resin is an epoxy resin.
Claim 5
Dependent Claim
24 words
A coil and coil carrier assembly according to claim 1, wherein said first and second windings face each other substantially throughout their entire height.
Claim 6
Dependent Claim
138 words
A coil and coil carrier assembly for an electromagnetic assembly for sound transducers and the like, comprising a tubular coil carrier defining an outside face and an inside face, a coil mounted on said coil carrier and having at least a first layer of turns of wire defining a first winding arranged on the inside face of said coil carrier and at least a second layer of turns of wire defining a second winding arranged on the outside face of said coil carrier, said first and second windings at least partially facing each other, said carrier having in the zone in which said first and second windings face each other a plurality of circumferentially spaced apart windows therethrough, parts of said first and second windings extending laterally into said windows to mechanically anchor said coil to said carrier.
Claim 7
Dependent Claim
138 words
A coil and coil carrier assembly for an electromagnetic assembly for sound transducers and the like, comprising a tubular coil carrier defining an outside face and an inside face, a coil mounted on said coil carrier and having at least a first layer of turns of wire defining a first winding arranged on the inside face of said coil carrier and at least a second layer of turns of wire defining a second winding arranged on the outside face of said coil carrier, said first and second windings at least partially facing each other, said carrier having in the zone in which said first and second windings face each other a plurality of circumferentially spaced apart windows therethrough, parts of said first and second windings extending laterally into said windows to mechanically anchor said coil to said carrier.
Claim 8
Dependent Claim
56 words
The coil and coil carrier assembly according to claim 1, wherein said windows are elongated windows, and the height of said first and second windings is larger than the height of said windows, so that upper and lower turns of each of said windings are arranged on zones of said coil carrier free of window openings.
Claim 9
Dependent Claim
23 words
The coil and coil carrier assembly according to claim 6, wherein said first and second windings face each other throughout their entire height.
Claim 10
Dependent Claim
53 words
The coil and coil carrier assembly according to claim 1, wherein said carrier has in the zone in which said first and second windings face each other a plurality of circumferentially spaced apart windows therethrough, said first and second windings extending laterally into said windows to mechanically anchor said coil to said carrier.
References Cited (Backward Citations)
US2164374A
Cited
GB693290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |