U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Celebrity Inventors

Actress Jamie Lee Curtis is a patented inventor - she created a diaper equipped with a premoistened baby wipe. And that's no act!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 381/166 - Having a fluid as a conducting element


Subclass of Class 381 - Electrical audio signal processing systems and devices
Definition: Subject matter wherein an electrically conductive element
No. of patents: 9
Last issue date: 07/05/2011


NumberTitleIssue Date
7974423Loudspeaker system
A loudspeaker system comprises a cabinet, a speaker unit, a package body, a filler gas, and an absorbent. The speaker unit is mounted in the cabinet. At least one package body is disposed in a vacant space inside of the cabinet and is structured by a bag body for se...
07/05/2011
7336797Apparatus and method for generating acoustic energy in a receiver assembly
A receiver assembly includes a housing having a fixed housing portion and a shiftable housing portion cooperating to define a hollow cavity. A flexible membrane secured between the fixed housing portion and the shiftable housing portion and adapted to allow relative...
02/26/2008
7329975Ultrasonic sensor
An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of conver...
02/12/2008
7068806Condensed speaker system
A highly miniaturized (condensed) speaker system provides the same desirable performance characteristics as a full size acoustic suspension speaker system by incorporating a combination of one or more low pressure chambers and optionally one or more high pressure ga...
06/27/2006
6961718Vector estimation system, method and associated encoder
An encoder and associated vector estimation method and system (1) for processing a sequence of input vectors (y0 to yT) each comprising a plurality of elements. The vector estimation system (1) has a digital filter (2) with...
11/01/2005
5853005Acoustic monitoring system
A transducer in communication with fluid in a pad held in close contact against a sound or movement source monitors acoustic signals transferred into the fluid. The signal pattern is monitored aurally and/or compared to predetermined reference patterns, a...
12/29/1998
5091959Speaker system
A sound speaker system has air chambers in a cylinder with a voice coil actuated vibrator and suitable inner wall speakers....
02/25/1992
5060274Hydrostatic speaker and speaker driver
A hydrostatic speaker includes an oscillator, a partition diaphragm disposed in the oscillator to divide the oscillator into two chambers, at least one of which chambers serves as a fluid chamber to cause the partition diaphragm to vibrate in response to ...
10/22/1991
4755975Piezoelectric transducer for transmitting or receiving ultrasonic waves
A piezoelectric transducer in which a casing is mounted in a sealing manner on a base member for supporting two rod-shaped terminals, a piezoelectric element is bonded to the inner surface of said casing, and electrodes on the front and back surfaces of s...
07/05/1988
 
Sign InRegister
Username  
Password   
forgot password?