Patent ID: 8327820
Filing Date: 2012-12-11
Classification: F01B,F02B

Abstract:
1. A pressure-operated engine having an annular structure, which comprises a driven shaft ( 2 ) extending along the annular axis; an annular housing ( 11 , 13 ) including a housing wall and at least one rotating piston ( 4 ) rotating in said annular housing along a circular path, sealed against said housing, said at least one rotating piston ( 4 ) being connected to said driven shaft through a connecting link in a rotationally fixed manner and delimiting in said annular housing a co-rotating ring-segment-like pressure chamber ( 20 ) at least on the side located in the direction of rotation as seen from said pressure chamber; connections to a pressure-medium supply ( 21 ) and to an exhaust system ( 24 ), which are formed in predetermined positions of said annular housing, characterized in that said rotating piston ( 4 ) comprises a piston housing ( 29 ) and, in said piston housing, an internal piston ( 31 ) which is pressed towards said pressure chamber ( 20 ) by a pre-stressing force ( 36 , 37 ), which also supports oneself on said piston housing, said internal piston ( 31 ) being linearly displaceable against said pre-stressing force in relation to said piston housing in a longitudinal direction of said piston, the line of displacement of said internal piston ( 31 ) tangentially passing the axis of said driven shaft ( 2 ) at a distance; wherein said internal piston ( wherein said pre-stressing force is applied by at least one compression spring ( wherein said internal piston (