Patents by Inventor Lennart Emanuelsson

Lennart Emanuelsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Crankcase scavenged four-stroke engine
    Patent number: 7066140
    Abstract: A crankcase scavenged and lubricated four-stroke engine (1) comprising especially: a mixture-preparation device (15) for supplying an air-fuel-lubricant mixture; an intake channel (16) connecting to the crankcase or cylinder to supply at least air (13) to the crankcase volume (12); an overflow channel (17) connecting to the crankcase or cylinder and to the intake opening (7) with intake valve (8) to supply to the intake at least air and lubricant from the crankcase volume; a valve drive assembly (18) driven by a crankshaft (4) for actuating the intake valve (8) and the exhaust valve (10); a valve drive assembly housing (19, 20, 21, 21?, 22) comprising one or more sections (19, 20, 21, 21?, 22) which is/are separate from the crankcase but in communication exclusively with the crankcase volume via at least one small size passage (23, 24, 25, 26, 27), and each section (19, 20, 21, 21?, 22) of the valve drive assembly housing has a lowest part situated closer to the combustion chamber, than the lowest part of the
    Type: Grant
    Filed: January 30, 2003
    Date of Patent: June 27, 2006
    Assignee: Aktiebolaget Electrolux
    Inventors: Lennart Emanuelsson, Peter Gunnarsson, Esbjörn Ollas, Tore Aronsson
  • Crankcase scavenged four-stroke engine
    Publication number: 20050145215
    Abstract: A carnkcase scavenged and lubricated four-stroke engine (1) comprising especially: a mixture-preparation device (15) for supplying an air-fuel-lubricant mixture; an intake channel (16) connecting to the crankcase or cylinder to supply at least air (13) to the crankcase volume (12); an overflow channel (17) conncting to the crankcase or cylinder and to the intake opening (7) with intake valve (8) to supply to the intake at least air and lubricant from the crankcase volume; a valve drive assembly (18) driven by a crankshaft (4) for actuating the intake valve (8) and the exhaust valve (10); a valve drive assembly housing (19, 20, 21, 21?, 22) comprising one or more sections (19, 20, 21, 21?, 22) which is/are separate from the crankcase but in communication exclusively with the crankcase volume via at least one small size passage (23, 24, 25, 26, 27), and each section (19, 20, 21, 21?, 22) of the valve drive assembly housing has a lowest part situated higher in the axial direction of the cylinder bore, i.e.
    Type: Application
    Filed: January 30, 2003
    Publication date: July 7, 2005
    Inventors: Lennart Emanuelsson, Peter Gunnarsson, Esbjorn Ollas, Tore Aronsson