with similar tooth forms

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    ROOTS BLOWER

    • Publication number 20230108876
    • Publication date Apr 6, 2023
    • OGURA CLUTCH CO., LTD.
    • Tatsuya YAGI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SUCTION/COMPRESSION ROTATING MECHANISM, ROTARY COMPRESSOR AND ROTAR...

    • Publication number 20220196016
    • Publication date Jun 23, 2022
    • Hai NGUYEN
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    INTEGRATED ROTARY POSITIVE-DISPLACEMENT MACHINERY

    • Publication number 20200109713
    • Publication date Apr 9, 2020
    • HI-BAR BLOWERS, INC.
    • Paul Xiubao HUANG
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OPTIMIZED HELIX ANGLE ROTORS FOR ROOTS-STYLE SUPERCHARGER

    • Publication number 20190383287
    • Publication date Dec 19, 2019
    • Eaton Intelligent Power Limited
    • Matthew G. Swartzlander
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    VACUUM PUMP SCREW ROTOR

    • Publication number 20190211822
    • Publication date Jul 11, 2019
    • Leybold GmbH
    • Thomas DREIFERT
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OPTIMIZED ENERGY RECOVERY DEVICE ROTOR

    • Publication number 20190113035
    • Publication date Apr 18, 2019
    • Eaton Intelligent Power Limited
    • Matthew Gareld SWARTZLANDER
    • F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
  • Information Patent Application

    THERMODYNAMICALLY INTERACTIVE HEAT FLOW PROCESS AND MULTI-STAGE MI...

    • Publication number 20170314508
    • Publication date Nov 2, 2017
    • Richard H. Vogel
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    HYDROELECTRIC GEAR PUMP WITH VARYING HELIX ANGLES OF GEAR TEETH

    • Publication number 20170248019
    • Publication date Aug 31, 2017
    • EATON CORPORATION
    • Matthew Gareld SWARTZLANDER
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID WORKING SYSTEMS

    • Publication number 20160327038
    • Publication date Nov 10, 2016
    • Danfoss Power Solutions GmbH & Co OHG
    • Elliott Gruber
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    CLAW PUMP

    • Publication number 20160273539
    • Publication date Sep 22, 2016
    • ANEST IWATA CORPORATION
    • Kenichi KOBAYASHI
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    COMPRESSOR SYSTEM WITH VARIABLE BLOWDOWN CONTROL

    • Publication number 20160186756
    • Publication date Jun 30, 2016
    • Ingersoll-Rand Company
    • Michael Peters
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    A SILENT GEAR PUMP OR MOTOR SUPPRESSING TROUBLES OF TRAPPING FLUID

    • Publication number 20160108733
    • Publication date Apr 21, 2016
    • LIM, Nag-Bok
    • Nag-Bok LIM
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SCREW-TYPE FLUID MACHINE

    • Publication number 20150211517
    • Publication date Jul 30, 2015
    • Mayekawa Mfg. Co., Ltd.
    • Akira Matsui
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OPTIMIZED HELIX ANGLE ROTORS FOR ROOTS-STYLE SUPERCHARGER

    • Publication number 20150118086
    • Publication date Apr 30, 2015
    • EATON CORPORATION
    • Matthew G. Swartzlander
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLUID-PRESSURE APPARATUS

    • Publication number 20140322060
    • Publication date Oct 30, 2014
    • SUMITOMO PRECISION PRODUCTS CO., LTD.
    • Hiroaki Takeda
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    GEAR PUMP HAVING GROOVED MOUNTING ADAPTER

    • Publication number 20140308150
    • Publication date Oct 16, 2014
    • Caterpillar Inc.
    • Randall Edward FURRER
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OPTIMIZED HELIX ANGLE ROTORS FOR ROOTS-STYLE SUPERCHARGER

    • Publication number 20140193285
    • Publication date Jul 10, 2014
    • EATON CORPORATION
    • Matthew G. Swartzlander
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SIX-BLADE BIAXIAL ROTARY POSITIVE-DISPLACEMENT PUMP

    • Publication number 20120093673
    • Publication date Apr 19, 2012
    • Yasuna Yokoi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    OPTIMIZED HELIX ANGLE ROTORS FOR ROOTS-STYLE SUPERCHARGER

    • Publication number 20110058974
    • Publication date Mar 10, 2011
    • EATON CORPORATION
    • Matthew G. Swartzlander
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Rotary blower with isothermal air jacket

    • Publication number 20090191083
    • Publication date Jul 30, 2009
    • Paul Xiubao Huang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Optimized Helix Angle Rotors For Roots-Style Supercharger

    • Publication number 20090148330
    • Publication date Jun 11, 2009
    • EATON CORPORATION
    • Matthew G. Swartzlander
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PUMPS AND PUMP-HEADS COMPRISING INTERNAL PRESSURE-ABSORBING MEMBER

    • Publication number 20090060728
    • Publication date Mar 5, 2009
    • Micropump, Inc., a unit of IDEX Corporation
    • David J. Grimes
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Optimized helix angle rotors for Roots-style supercharger

    • Publication number 20060263230
    • Publication date Nov 23, 2006
    • MATTHEW G. SWARTZLANDER
    • Matthew G. Swartzlander
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Manufacturing apparatus and method for predicting life of rotary ma...

    • Publication number 20050107984
    • Publication date May 19, 2005
    • Kabushiki Kaisha Toshiba
    • Shuichi Samata
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Manufacturing apparatus and method for predicting life of rotary ma...

    • Publication number 20040064212
    • Publication date Apr 1, 2004
    • Shuichi Samata
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...