Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Reexamination Certificate
2009-06-23
2011-11-08
Ni, Suhan (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
C381S370000, C381S374000
Reexamination Certificate
active
08055006
ABSTRACT:
A foldable headphone set in which the earphones of the headphone set may rotate between a folded (or closed) position and an unfolded (or open) position due to a torsion- or spring-loaded hinge associated with each earphone. The headphone set may be held in the folded position by way of a magnetic latch. Also the user may adjust the amount of rotation by the respective hinges so that the earphones rotate to the user-defined limit position. The user could set the user-defined limit position to a comfortable position for the user. That way, the earphones will unfold to the user-defined limit position every time (until the user-defined limit is readjusted). In addition, a friction grommet in the hinge may provide for a slow, controlled, smooth opening of the hinge. In at least one embodiment, a hinge is provided for use in a variety of applications.
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Koss Corporation
Ni Suhan
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