Lengthwise Scavenging From Head Patents (Class 123/74AA)
  • Internal combustion engine
    Patent number: 3996903
    Abstract: In a two-stroke cycle internal combustion engine a noncompression type pump formed by placing a plate-like secondary piston within a primary piston, between the top and the wrist pin. The reciprocating movements of primary and secondary piston in conjunction with the intake port and transfer port, provide a pump with a longer intake time and less power need, relative to prior art.
    Type: Grant
    Filed: June 1, 1971
    Date of Patent: December 14, 1976
    Inventor: Ferenc Cseh