Patents by Inventor Sven E. Eriksson

Sven E. Eriksson 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).

  • Intermeshing pump rotor gears with involute and linear flank portions
    Patent number: 4227869
    Abstract: A pair of rotors for a rotary piston pump or blower is disclosed. The rotor flanks comprise an involute section for cooperation with a similar section on the other rotor. Inside the involute section the flank comprises a circular arc portion. Outside the involute section the flank comprises a substantially linear part resulting in reduced flow losses at high rotational speeds without the creation of a blow-hole between the outlet and the inlet of the machine.
    Type: Grant
    Filed: October 17, 1977
    Date of Patent: October 14, 1980
    Assignee: Atlas Copco Aktiebolag
    Inventor: Sven E. Eriksson
  • Rotors for a screw rotor machine
    Patent number: 4088427
    Abstract: A pair of cooperating rotors for a screw rotor machine, comprising a main rotor with a dedendum and a gate rotor with an addendum. One flank of each gate rotor land is generated inside the pitch circle of the gate rotor by the crest of the main rotor land and is generated outside the pitch circle by a portion of the main rotor inside the pitch circle and is formed to sealingly cooperate with the main rotor land so that gear action is obtained only outside the pitch circle of the gate rotor and inside the pitch circle of the main rotor.
    Type: Grant
    Filed: September 13, 1976
    Date of Patent: May 9, 1978
    Assignee: Atlas Copco Aktiebolag
    Inventors: Kaj B. I. Emanuelsson, Sven E. Eriksson