Rotary piston machine

Abstract

A rotary piston machine including a rotary piston ( 6 ), which is mounted oil the crank pin ( 5, 5 ′) of a crankshaft accommodated in a stationary housing ( 1 ) and held by a holding device ( 8, 9, 10, 11 ) in a manner that prevents significant change of the angular position of the rotary piston relative to the housing. The rotary piston forms, on its periphery, at least one pair of concave and convex surfaces ( 12, 13; 12′, 13 ′) that engage with an associated pair of convex and concave surfaces ( 14, 15; 14′, 15 ′) located on a peripheral surface ( 3 ) of the housing surrounding the rotary piston. The pairs of concave and convex surfaces engage one another over the angular range of the rotation of the crankshaft while forming a chamber and while altering the size of the chamber over this angular range. The holding device has a bearing device ( 9, 10, 11 ), which is situated at a distance from the crankshaft (M 1 ) and with which the rotary piston ( 6 ) is mounted on the housing ( 1 ) in a manner that enables it to rotate around an arbor ( 9 ) that is parallel to the crankshaft (M 1 ) and to be displaced toward the crankshaft. The distance between the crankshaft (M 1 ) and the pivot bearing ( 9 ) of the hearing device ( 9, 10, 11 ) is adjustable.

1 . A rotary piston machine, comprising: 
 a) a rotary piston ( 6 ), said rotary piston being rotatably mounted on a crank pin ( 5 ,  5 ′) of a crankshaft accommodated in a stationary housing ( 1 ) and being held by a holding device ( 8 ,  9 ,  10 ,  11 ) for preventing an angular position of the rotary piston, relative to the housing, from significantly changing, said rotary piston forms, on its periphery, at least one pair of concave and convex surfaces ( 12 ,  13 ;  12 ′,  13 ′), said at least one pair of concave and convex surfaces engaging an associated pair of convex and concave surfaces ( 14 ,  15 ;  14 ′,  15 ′) located on a peripheral surface ( 3 ) of the housing, said housing peripheral surface surrounding the rotary piston, the pairs of concave and convex surfaces engage one another over an angular range of crankshaft rotation while forming a chamber and while altering the size of the chamber over this angular range,    b) wherein the holding device has a bearing device ( 9 ,  10 ,  11 ), said bearing device being situated a distance from the crankshaft (M 1 ) and serving to mount the rotary piston ( 6 ) on the housing ( 1 ) in a manner that enables the rotary piston to rotate around an axis ( 9 ) that is parallel to the crankshaft (M 1 ) and to be displaced toward the crankshaft,    c) wherein a distance between the crankshaft (M 1 ) and a pivot bearing ( 9 ) of the bearing device ( 9 ,  10 ,  11 ) is adjustable.    
     
     
         2 . The rotary piston machine according to  claim 1 , wherein the rotary piston ( 6 ) is connected to the bearing device ( 9 ,  10 ,  11 ) via a holding rod ( 8 ).  
     
     
         3 . The rotary piston machine according to  claim 1 , wherein the rotary piston ( 6 ) carries the crank pin bearing ( 19 ) that is spaced apart via an arm ( 20 ).  
     
     
         4 . The rotary piston machine according to  claim 1 , wherein the bearing device ( 9 ,  10 ,  11 ), as a device for displaceable bearing, comprises a piston/cylinder arrangement ( 10 ,  11 ).