Patent US5430805A successfully refreshed from Google Patents.
US5430805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar electromagnetic transducer
Assignee: MODDHA INTERACTIVE Inc
•
Filing: 1994-06-29
•
Granted: 1995-07-04
•
Expires: 2014-06-29
Abstract
Abstract An electromagnetic transducer diaphragm having an electrical conductor layer, with a conductor pattern, positioned between two insulating layers of a flexible, electrically-insulating material bonded together to protect the diaphragm. An electrical current can flow through the conductors to produce magnetic and electrostatic fields around said conductors which interact with an electromagnetic field to produce mechanical displacement of the diaphragm which in turn produces an audio signal. Non-ferrous supports can be used to support the diaphragm. A magnet or magnets may be used to create the electromagnetic field. The magnets can be bonded to the cross arms of the non-ferrous support.
Inventors
- 👤 Charles Stevenson
- 👤 Edward Porrazzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:08
CPC Classifications
H; H04; H04R; H04R9/00; H04R9/02; H04R9/04; H04R9/046; H04R9/047; H04R7/00; H04R7/02; H04R7/04; H04R7/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
An electromagnetic transducer comprising: (a) a diaphragm comprised of (i) a first insulating layer formed of pliable, polymeric electrically-insulating material, (ii) a second insulating layer formed of pliable, polymeric type electrically-insulating material, and (iii) an electrical conductor layer comprised of a conductor pattern and positioned between said first insulating layer and said second nsulating layer; (b) means for generating an electromagnetic field in which said diaphragm is placed including at least one magnet; and (c) non-ferrous support means for both the diaphragm and said means for generating an electromagnetic field.
Claim 2
Dependent Claim
90 words
An electromagnetic transducer comprising: (a) a diaphragm comprised of (i) a first insulating layer formed of pliable, polymeric electrically-insulating material, (ii) a second insulating layer formed of pliable, polymeric type electrically-insulating material, and (iii) an electrical conductor layer comprised of a conductor pattern and positioned between said first insulating layer and said second nsulating layer; (b) means for generating an electromagnetic field in which said diaphragm is placed including at least one magnet; and (c) non-ferrous support means for both the diaphragm and said means for generating an electromagnetic field.
Claim 3
Dependent Claim
21 words
An electromagnetic transducer in accordance with claim 1 wherein said first and second insulating layers are formed of Kapton or Mylar.
Claim 4
Dependent Claim
88 words
An electromagnetic transducer comprising: (a) a diaphragm comprised of (i) a first insulating layer of formed of pliable, polymeric type electrically-insulating material, (ii) a second insulating layer formed of ink, and (iii) an electrical conductor layer comprised of a conductor pattern and positioned between said first insulating layer and said second insulating layer, (b) means for generating an electromagnetic field in which said diaphragm is placed including at least one magnet; and (c) non-ferrous support means for both the diaphragm and said means for generating an electromagnetic field.
Claim 5
Dependent Claim
88 words
An electromagnetic transducer comprising: (a) a diaphragm comprised of (i) a first insulating layer of formed of pliable, polymeric type electrically-insulating material, (ii) a second insulating layer formed of ink, and (iii) an electrical conductor layer comprised of a conductor pattern and positioned between said first insulating layer and said second insulating layer, (b) means for generating an electromagnetic field in which said diaphragm is placed including at least one magnet; and (c) non-ferrous support means for both the diaphragm and said means for generating an electromagnetic field.
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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) | 1998-07-03 | 1999-01-02 | 1999-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-03 | 2003-01-02 | 2003-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-03 | 2007-01-02 | 2007-07-04 | $7700.00 | Window Closed / Lapsed |