TREA

Roger W. Lhotak

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  • Elburn, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Movable barrier hydraulic braking
    • Patent number 9,458,902
    • Issue date Oct 4, 2016
    • The Chamberlain Group, Inc.
    • Roger William Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Movable barrier hydraulic braking
    • Patent number 8,783,426
    • Issue date Jul 22, 2014
    • The Chamberlain Group, Inc.
    • Roger William Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Shaft joint
    • Patent number 8,001,725
    • Issue date Aug 23, 2011
    • The Chamberlain Group, Inc.
    • Roger W. Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Pass point system for controlling the operation of movable barriers
    • Patent number 6,414,454
    • Issue date Jul 2, 2002
    • The Chamberlain Group, Inc.
    • Roger William Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Pass point system for controlling the operation of movable barriers
    • Patent number 6,051,947
    • Issue date Apr 18, 2000
    • The Chamberlain Group, Inc.
    • Roger William Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Tensioning device for flexible drive member
    • Patent number 5,860,365
    • Issue date Jan 19, 1999
    • The Chamberlain Group, Inc.
    • Roger W. Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Garage door operator having vibration damper for noise reduction
    • Patent number 5,761,850
    • Issue date Jun 9, 1998
    • The Chamberlain Group, Inc.
    • Roger W. Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Modular snubber apparatus
    • Patent number 5,297,782
    • Issue date Mar 29, 1994
    • The Chamberlain Group, Inc.
    • Kenneth J. Dombrowski
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Garage door opener
    • Patent number 5,239,776
    • Issue date Aug 31, 1993
    • The Chamberlain Group, Inc.
    • Roger W. Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Sprocket conversion kit for garage door opener
    • Patent number 5,137,500
    • Issue date Aug 11, 1992
    • The Chamberlain Group, Inc.
    • Roger W. Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Battery terminal
    • Patent number 4,973,257
    • Issue date Nov 27, 1990
    • The Chamberlain Group, Inc.
    • Roger W. Lhotak
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Movable Barrier Hydraulic Braking
    • Publication number 20140325978
    • Publication date Nov 6, 2014
    • Roger William Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    Movable Barrier Hydraulic Braking
    • Publication number 20130152478
    • Publication date Jun 20, 2013
    • The Chamberlain Group, Inc.
    • Roger William Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    Shaft joint
    • Publication number 20070077115
    • Publication date Apr 5, 2007
    • Roger W. Lhotak
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES