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Class Information
Number: 181/207
Name: Acoustics > Sound-modifying means > Mechanical vibration attenuator
Description: Subject matter comprising sound deadening material physically or mechanically attached or installed on the acoustical device, or an element thereof to prevent vibratory noise usual to the operation of the device.










Sub-classes under this class:

Class Number Class Name Patents
181/208 Damping of flexural structure 161
181/209 Relatively moving parts 61


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
4867269 Tuned self-damping convoluted conduit Sep. 19, 1989
4864683 Noise isolating motor mounting system for a canister vacuum cleaner Sep. 12, 1989
4860852 Assembly for mounting an exhaust system on an exhaust gas source source of an internal combustion engine Aug. 29, 1989
4860851 Dimensionally-recoverable damping article Aug. 29, 1989
4854416 Tuned self-damping convoluted conduit Aug. 8, 1989
4844193 Noise absorber for drive shafts Jul. 4, 1989
4842095 Unitary anti-skid vibration dampening structure Jun. 27, 1989
4835972 Flex-line vibration isolator and cryopump with vibration isolation Jun. 6, 1989
4821828 Dynamic absorber for motor vehicle Apr. 18, 1989
4806953 Acoustic isolation timing belt pulley for drafting plotters Feb. 21, 1989
4799631 Aircraft shell module Jan. 24, 1989
4776573 Spring element Oct. 11, 1988
4765436 Dry friction damper with damping force perpendicular to principal direction of a vibration Aug. 23, 1988
4756045 Vacuum cleaner hose having alternating height corrugations Jul. 12, 1988
4716986 Vibration damping system Jan. 5, 1988
4712642 Self-damping convoluted conduit Dec. 15, 1987
4702346 Vibration insulator Oct. 27, 1987
4699243 Vibration isolating pipe Oct. 13, 1987
4693355 Automatic combinatorial weighting apparatus Sep. 15, 1987
4633973 Acoustic apparatus Jan. 6, 1987
4629432 Elastically supported thruster structure Dec. 16, 1986
4538697 Vibration-absorbing system for an automotive vehicle Sep. 3, 1985
4523612 Apparatus and method for suppressing vibration and displacement of a bellows Jun. 18, 1985
4452334 Tunable damper for an acoustic wave guide Jun. 5, 1984
4439497 Ultrasonic sound absorber Mar. 27, 1984
4436119 Thermal acoustical pipe insulation Mar. 13, 1984
4433582 Damping device for use with acoustic information generation machines Feb. 28, 1984
4402383 Drill motor enclosure Sep. 6, 1983
4385665 Kinetic energy absorber May. 31, 1983
4356884 Acoustical enclosure system Nov. 2, 1982
4353433 Damping covering Oct. 12, 1982
4346782 Method of producing an improved vibration damping and sound absorbing coating on a rigid substrate Aug. 31, 1982
4345666 Sound-damping assembly for a structure of a piece of furniture Aug. 24, 1982
4318452 Noise-reduced constructional unit of a device Mar. 9, 1982
4300928 Structure for supporting air filter Nov. 17, 1981
4281739 Damping body for machine support arrangements Aug. 4, 1981
4273213 Element for sonic and vibratory absorption Jun. 16, 1981
4273207 Supporting pipe to constitute a drive unit for an automotive vehicle Jun. 16, 1981
4272572 Vibration isolation structure Jun. 9, 1981
4269283 Method and apparatus for acoustical damping of punching machines and the like May. 26, 1981
4244438 Encased internal combustion engine, in particular for an automobile Jan. 13, 1981
4190131 Noise abatement techniques and systems Feb. 26, 1980
4183572 Railway flanged wheel vibration dampening assembly Jan. 15, 1980
4168754 Impact tool Sep. 25, 1979
4120382 Wide-band vibration damper Oct. 17, 1978
4067184 Noise reducing spindle washers Jan. 10, 1978
4066058 Vibration isolation system Jan. 3, 1978
4060143 Muffler mounting apparatus in construction machinery Nov. 29, 1977
4023651 Damping vibrations in sheet material May. 17, 1977
3990535 Vibration damping device for levers Nov. 9, 1976

1 2 3 4 5 6










 
 
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