Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic
Reexamination Certificate
2005-03-15
2005-03-15
Ni, Suhan (Department: 2643)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electromagnetic
C029S594000
Reexamination Certificate
active
06868167
ABSTRACT:
The method of assembling a speaker includes disposing a quantity of volatile magnetic fluid containing a pre-determined amount of lubricating oil into a radial gap of a driver unit, aligning a vibration system having a diaphragm and a voice coil to the driver unit such that the voice coil is movably mounted into the radial gap, fixing the vibration system to the driver unit, and removing the volatile component of the volatile magnetic fluid. The speaker includes a driver unit having a magnetic pole case defining a radial gap, a vibration system having a diaphragm and a voice coil where the vibration system is fixed to the drive unit and the voice coil is movably mounted into the radial gap, and a residual magnetic fluid layer disposed on the surfaces of one or more of the magnetic pole case and the voice coil where an air gap exists between the voice coil and the magnetic pole case.
REFERENCES:
patent: 4019694 (1977-04-01), Fare et al.
patent: 4303806 (1981-12-01), Thiele
patent: 4320263 (1982-03-01), Thiele
patent: 4414437 (1983-11-01), Trauernicht et al.
patent: 4742887 (1988-05-01), Yamagishi
patent: 5243662 (1993-09-01), Sogn et al.
patent: 5335287 (1994-08-01), Athanas
patent: 5757946 (1998-05-01), Van Schyndel
Ferrotec Corporation
Mesmer & Deleault, PLLC
Ni Suhan
Robert R. Deleault, Esq.
LandOfFree
Audio speaker and method for assembling an audio speaker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Audio speaker and method for assembling an audio speaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Audio speaker and method for assembling an audio speaker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3400666