US4697283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Telephone handset with integrated flux coil
Assignee: Nortel Networks Ltd
•
Filing: 1985-10-08
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Granted: 1987-09-29
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Expires: 2005-10-08
Abstract
Abstract A telephone handset having a receiver housing at one end has a flux coil positioned at the front corner at the junction between the peripheral wall and the front wall of the housing. The flux coil is connected in series or in parallel with the receiver. The flux coil, by this arrangement, is positioned very close to the front face of the receiver housing, giving very good coupling between flux coil and a hearing aid. Normally unused space is occupied by the flux coil and permits use of any convenient receiver.
Inventors
- 👤 Conrad D. Lafrance
- 👤 Peter Fatovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:00
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/21; H04M1/215; H04M1/03; H04R; H04R17/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
A telephone handset having a tubular housing extending forward at one end for reception of a receiver therein; said tubular housing having a peripheral wall and a front wall closing a front end of the tubular housing; a seating formed on an inner surface of said front wall and an annular recess extending around said seating between said seating and said peripheral wall; a receiver positioned in said tubular housing and having a front surface positioned on said seating; and a flux coil positioned in said recess, said flux coil being positioned adjacent said peripheral wall and forward of said front surface of said receiver, and connected electrically to said receiver.
Claim 2
Dependent Claim
111 words
A telephone handset having a tubular housing extending forward at one end for reception of a receiver therein; said tubular housing having a peripheral wall and a front wall closing a front end of the tubular housing; a seating formed on an inner surface of said front wall and an annular recess extending around said seating between said seating and said peripheral wall; a receiver positioned in said tubular housing and having a front surface positioned on said seating; and a flux coil positioned in said recess, said flux coil being positioned adjacent said peripheral wall and forward of said front surface of said receiver, and connected electrically to said receiver.
Claim 3
Dependent Claim
15 words
A handset as claimed in claim 1, said flux coil being bonded in said recess.
Claim 4
Dependent Claim
16 words
A handset as claimed in claim 1, said flux coil connected in series with said receiver.
Claim 5
Dependent Claim
16 words
A handset as claimed in claim 1, said flux coil connected in parallel with said receiver.
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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) | 1990-09-28 | 1991-03-30 | 1991-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-28 | 1995-03-30 | 1995-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-28 | 1999-03-30 | 1999-09-29 | $7700.00 | Window Closed / Lapsed |