Telephone handset with integrated flux coil

• US 4,697,283 A
• Filed: 10/08/1985
• Issued: 09/29/1987
• Est. Priority Date: 10/08/1985
• Status: Expired due to Fees

• Current Assignee: Northern Telecom Limited (Nortel Networks Corporation)
• Original Assignee: Northern Telecom Limited (Nortel Networks Corporation)
• Inventors: Lafrance, Conrad D., Fatovic, Peter
• Primary Examiner(s): Dwyer, James L.
• Assistant Examiner(s): Byrd, Danita R.
• Application Number:
  US06/785,374
• Time in Patent Office: 721 Days
• Field of Search: 179/103, 179/107 R, 179/78 R, 179/80, 179/178, 179/179, 179/182 R, 179/182 A, 179/112, 179/172, 179/2 C, 379/443, 379/433, 379/416, 379/55, 381/189
• US Class Current: 379/443
• CPC Class Codes: H04M 1/03 Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
• CPC Class Codes: H04M 1/215 by non-intrusive coupling means, e.g. acoustic couplers
• CPC Class Codes: H04R 17/00 Piezoelectric transducers; Electrostrictive transducers piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners H10N30/00

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.

Claims

1. 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.

2. A handset as claimed in claim 1, said flux coil being bonded in said recess.

3. A handset as claimed in claim 1, said flux coil connected in series with said receiver.

4. A handset as claimed in claim 1, said flux coil connected in parallel with said receiver.