using spirally or helically shaped channels

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  • Information Patent Application

    AIR-TRANSPARENT SELECTIVE SOUND SILENCER USING ULTRA-OPEN METAMATERIAL

    • Publication number 20240077008
    • Publication date Mar 7, 2024
    • Trustees of Boston University
    • Xin Zhang
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Constant Velocity Muffler Assembly

    • Publication number 20230349309
    • Publication date Nov 2, 2023
    • John Ulishney
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    A sound attenuator as well as elements and a method of production t...

    • Publication number 20220099006
    • Publication date Mar 31, 2022
    • Teknologian Tutkimuskeskus VTT Oy
    • Erin Komi
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    OVERLAPPING VANE MUFFLER

    • Publication number 20210172355
    • Publication date Jun 10, 2021
    • U.S. Army Combat Capabilities Development Command, Army Research Labortary
    • Michael V. Scanlon
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    AIR-TRANSPARENT SELECTIVE SOUND SILENCER USING ULTRA-OPEN METAMATERIAL

    • Publication number 20210087957
    • Publication date Mar 25, 2021
    • Trustees of Boston University
    • Xin Zhang
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    METHODS OF AND SYSTEMS FOR CONSTRAINING FIBROUS MATERIAL DURING FIL...

    • Publication number 20190345856
    • Publication date Nov 14, 2019
    • OCV Intellectual Capital, LLC.
    • Luc Brandt
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    APPARATUS FOR INCREASING FLOW RATE IN ENGINE PIPE AND PROCESSING ME...

    • Publication number 20180328266
    • Publication date Nov 15, 2018
    • Gihun KIM
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Application

    MOTORCYCLE MUFFLER BAFFLE

    • Publication number 20150218984
    • Publication date Aug 6, 2015
    • Gary Hash
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    COMPACT MUFFLER FOR SMALL TWO-STROKE INTERNAL COMBUSTION ENGINES

    • Publication number 20140332312
    • Publication date Nov 13, 2014
    • Chris B. Harris
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Low Pressure Drop, Hight Efficiency Spark or Particulate Arresting...

    • Publication number 20140102300
    • Publication date Apr 17, 2014
    • UNIVERSAL ACOUSTIC & EMISSION TECHNOLOGIES
    • Elden F. Ray
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Fluid Flow Controller

    • Publication number 20130291980
    • Publication date Nov 7, 2013
    • Jayden David Harman
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    EXHAUST MUFFLER PROVIDED WITH TAIL PIPE

    • Publication number 20130168182
    • Publication date Jul 4, 2013
    • Matsushou Co., Ltd.
    • Noboru Matsumoto
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    COMPACT MUFFLER FOR SMALL TWO-STROKE INTERNAL COMBUSTION ENGINES

    • Publication number 20130168183
    • Publication date Jul 4, 2013
    • Chris B. Harris
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    EXHAUST SYSTEM FOR MOTORCYCLE

    • Publication number 20120205191
    • Publication date Aug 16, 2012
    • Satoshi Matsushima
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Fluid Transfer Pipe and Fluid Transfer Apparatus and a Fluid Attenu...

    • Publication number 20120055733
    • Publication date Mar 8, 2012
    • Russell Wheeler
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Fluid Flow Controller

    • Publication number 20120016461
    • Publication date Jan 19, 2012
    • JAYDEN DAVID HARMAN
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    SOUND ABSORBER HAVING HELICAL FIXTURES

    • Publication number 20110308884
    • Publication date Dec 22, 2011
    • Deutsches Zentrum für Luft-und Raumfahrt e.V.
    • Jörg Melcher
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Muffler having fluid swirling vanes

    • Publication number 20100282538
    • Publication date Nov 11, 2010
    • Jay S. Kim
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    MUFFLER FOR ENGINES IN OILFIELD APPLICATIONS

    • Publication number 20100206665
    • Publication date Aug 19, 2010
    • THE MCGREGOR FAMILY LIMITED PARTNERSHIP
    • Howard N. McGregor
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    MUFFLER OF A EXHAUST SYSTEM

    • Publication number 20100101890
    • Publication date Apr 29, 2010
    • Sanguk Kim
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Helical Exhaust Passage

    • Publication number 20090205327
    • Publication date Aug 20, 2009
    • FORD GLOBAL TECHNOLOGIES, L.L.C.
    • Daniel Michael Kabat
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Sound Dampening Flow Channel Device

    • Publication number 20090050404
    • Publication date Feb 26, 2009
    • Ralf Corin
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Muffler having fluid swirling vanes

    • Publication number 20080308346
    • Publication date Dec 18, 2008
    • Jay S. Kim
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Arrangement For Supplying A Medium Into An Exhaust Gas Conduit In A...

    • Publication number 20080092526
    • Publication date Apr 24, 2008
    • Christian Kunkel
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Fluid Flow Controller

    • Publication number 20080041474
    • Publication date Feb 21, 2008
    • Jayden David Harman
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Application

    Vehicle exhaust systems

    • Publication number 20080006026
    • Publication date Jan 10, 2008
    • Pacemaker Headers Pty Ltd
    • Michael Richter
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Silencer containing one or more porous bodies

    • Publication number 20060260867
    • Publication date Nov 23, 2006
    • Silentor Holding A/S
    • Svend Frederiksen
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Muffler having fluid swirling vanes

    • Publication number 20060260869
    • Publication date Nov 23, 2006
    • Jay S. Kim
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Spiraltrap: devices and methods for the trapping particulate matter...

    • Publication number 20060191415
    • Publication date Aug 31, 2006
    • Industrial Widget Works Company
    • Richard C. Johnson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Modular muffler with removable cartridge assembly

    • Publication number 20060124384
    • Publication date Jun 15, 2006
    • Tom Tary
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES