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Patent No. 5377411

Hair Cutting Appliance

A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.

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Class 381/393 - electrical insulation feature


Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter in which the housing or components within
No. of patents: 5
Last issue date: 05/10/2011


NumberTitleIssue Date
7940950Electromagnetically-shielded speaker systems and methods
The present invention relates to electromagnetically-shielded speaker (or microphone) systems for generating acoustic sounds (or electric signals) based upon electric signals (or acoustic sounds) supplied thereto while minimizing irradiation of undesirable electroma...
05/10/2011
6061459Surface-mounted electromagnetic sound generating body
In the surface-mounted electromagnetic sound generating body in which a thin resin casing incorporating a sound generating unit is formed with a sound release hole, a sound leakage prevention member separate from the casing is provided around the sound re...
05/09/2000
5155773Electrodynamic transducer including inset
An electromagnetic transducer has a moving coil, a diaphragm and a magnet system enclosed within protecting covers. It includes an inset placed between the magnet system and the front cover. The inset is made of a non-magnetic, electrically insulating mat...
10/13/1992
4507800Enclosed magnet loudspeaker
A loudspeaker in which a permanent magnet and associated yoke are encapsulated in a plastic housing. The voice coil and diaphragm are cemented to the top piece of the yoke to fix the position of the voice coil within the air gap defined by the yoke. The h...
03/26/1985
4145571Loudspeaker enclosure with acoustically coupled loudspeaker damper
A loudspeaker system is described in which a driven speaker is acoustically coupled in the speaker enclosure with a variable acoustical damper, the damper having an acoustical cone, the movement of which is dampened by an induction coil connected across v...
03/20/1979
 
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