Patent ID: 7223019

Claim:
A piston engine, with a housing, in which a drive shaft is mounted such as to rotate by means of a swivel slide bearing, which has an inner first bearing part with an outer first bearing surface and an outer second bearing part with an inner second bearing surface, whereby the inner first bearing part is arranged in a torsionally-resistant manner on the drive shaft and the outer bearing part is designed as one piece and surrounds the inner bearing part with slide play, whereby the outer bearing part is formed at its outer circumference as a ring with a spherical segment-shaped third bearing surface, with which it is mounted with limited spherical movement in a third bearing part with a spherical segment-shaped inner fourth bearing surface, which surrounds the third bearing surface, whereby on one side of the third bearing part at least one entry guide slot is arranged, into which the second bearing part can be introduced in an angle-rotated position as far as into a position into the third bearing, in which the curvature mid-points (M) of the third and fourth bearing surfaces essentially cover one another, and whereby a rotation blocking device is arranged between the second and third bearing parts.