US4965836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereo headphone
Assignee: Koss Corp
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Filing: 1989-01-19
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Granted: 1990-10-23
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Expires: 2009-01-19
Abstract
Abstract A headphone having a dual element speaker unit including a face plate having an opening generally centrally located therein. A case coupler is mounted in the opening, and has an annular projection protruding through the opening. A first dynamic transducer is mounted within that annular projection. A second dynamic transducer is mounted to the case coupler opposite the first transducer. The case coupler includes an isolating plate, positioned between the first and second transducers, for sonically isolating the first transducer from the second. A grill plate is mounted over the annular projection, for providing a load to the first transducer. The isolating plate includes an opening, located outside the periphery of the annular projection, for allowing the passage of sound from the second transducer to the listener. A support assembly is connected to the face plate, and a cup assembly in turn connected to the support assembly. The support assembly includes means for allowing relative pivoting movement between the cup assembly and the face plate. The support assembly includes a ball and socket arrangement resulting in the relative motion allowed between the cup assembly and the face plate being biaxial. A bellows member is positioned between the cup and the face plate for damping movement between the cup assembly and the face plate, and for enclosing and directing sound waves generated by the transducers. A unique plug arrangement is provided for connecting the cord to the headphone apparatus.
Inventors
- 👤 Eugene M. Andre
- 👤 Allan G. Modzikowski
- 👤 Seth R. Banks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:40
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/10; H04R1/1008; H04R1/20; H04R1/22; H04R1/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
79 words
A headphone having a dual element speaker unit comprising, in combination: a face plate having an opening generally centrally located therein; a case coupler mounted in said opening, and having an annular projection protruding therethrough; a first dynamic acoustic transducer mounted within said annular projection of said case coupler; a second dynamic acoustic transducer mounted to said case coupler opposite said first transducer, between said first and second transducer for sonically isolating said first transducer from said second transducer.
Claim 2
Dependent Claim
79 words
A headphone having a dual element speaker unit comprising, in combination: a face plate having an opening generally centrally located therein; a case coupler mounted in said opening, and having an annular projection protruding therethrough; a first dynamic acoustic transducer mounted within said annular projection of said case coupler; a second dynamic acoustic transducer mounted to said case coupler opposite said first transducer, between said first and second transducer for sonically isolating said first transducer from said second transducer.
Claim 3
Dependent Claim
28 words
A headphone as recited in claim 1 further comprising a grill plate mounted over said annular projection, for providing a load and phase delay to said first transducer.
Claim 4
Dependent Claim
33 words
A headphone as recited in claim 2 wherein said grill plate has openings for allowing the passage of sound waves only around the periphery thereof, and no such openings near the center thereof.
Claim 5
Dependent Claim
28 words
A headphone as recited in claim 1 wherein said isolator plate includes an opening for allowing the passage of sound, located outside the periphery of said annular projection.
Claim 6
Dependent Claim
44 words
A headphone as recited in claim 1 further comprising a support assembly connected to said face plate and a cup assembly connected to said support assembly, said support assembly including means for allowing relative pivoting movement between said cup assembly and said face plate.
Claim 7
Dependent Claim
151 words
A headphone having a dual element speaker unit comprising, in combination: a face plate having an opening generally centrally located therein; a case coupler mounted in said opening, and having an annular projection protruding therethrough; a first acoustic transducer mounted within said annular projection of said case coupler; a second acoustic transducer mounted to said case coupler opposite said first acoustic transducer; said case coupler including an isolator plate positioned between said first and second transducers for sonically isolating said first transducer from said second transducer; a support assembly connected to said face plate; and a cup assembly connected to said support assembly, said support assembly including means for allowing relative pivoting movement between said cup assembly and said face plate; wherein said support assembly includes a ball and socket arrangement, whereby relative motion is permitted between said cup assembly and said face plate, and wherein said relative motion is biaxial.
Claim 8
Dependent Claim
151 words
A headphone having a dual element speaker unit comprising, in combination: a face plate having an opening generally centrally located therein; a case coupler mounted in said opening, and having an annular projection protruding therethrough; a first acoustic transducer mounted within said annular projection of said case coupler; a second acoustic transducer mounted to said case coupler opposite said first acoustic transducer; said case coupler including an isolator plate positioned between said first and second transducers for sonically isolating said first transducer from said second transducer; a support assembly connected to said face plate; and a cup assembly connected to said support assembly, said support assembly including means for allowing relative pivoting movement between said cup assembly and said face plate; wherein said support assembly includes a ball and socket arrangement, whereby relative motion is permitted between said cup assembly and said face plate, and wherein said relative motion is biaxial.
Claim 9
Dependent Claim
42 words
A headphone is recited in claim 6 further comprising a bellows number positioned between said cup and said face plate, for damping movement between said cup assembly and said face plate, and for enclosing and directing sound waves generated by said transducers.
Claim 10
Dependent Claim
94 words
A headphone comprising, in combination: a face plate having an opening generally centrally located therein; a case coupler mounted in said opening, and carrying a plurality of acoustic transducers; a cup assembly; and a support assembly for supporting said face plate and said case coupler with respect to said cup assembly and allowing relative pivoting movement between said cup assembly and said face plate, said support assembly including a ball and socket arrangement resulting in relative motion being permitted between said cup assembly and said face plate, and wherein said relative motion is biaxial.
Claim 11
Dependent Claim
94 words
A headphone comprising, in combination: a face plate having an opening generally centrally located therein; a case coupler mounted in said opening, and carrying a plurality of acoustic transducers; a cup assembly; and a support assembly for supporting said face plate and said case coupler with respect to said cup assembly and allowing relative pivoting movement between said cup assembly and said face plate, said support assembly including a ball and socket arrangement resulting in relative motion being permitted between said cup assembly and said face plate, and wherein said relative motion is biaxial.
Claim 12
Dependent Claim
42 words
A headphone as recited in claim 8 further comprising a bellows member positioned between said cup and said face plate, for damping movement between said cup assembly and said face plate, and for enclosing and directing sound waves generated by said transducers.
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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |