SPIRAL MACHINE WORKING MEMBERS Russian patent published in 2002 - IPC

FIELD: mechanical engineering; compressor building. SUBSTANCE: one of working members is made for movement with eccentricity relative to other working member. Inner and outer outlines of longitudinal section of each working element are made in form of involutes. Outline of section of end section of first working member formed by series of curves connecting outer and inner involutes is located between extensions of its involutes. End section of second working member conjugates with end section of first working member. End section of second working member comes out of the limits of extension of its inner involute. EFFECT: provision of complete forcing out of gas through discharge port, increased area of discharge port. 2 cl, 4 dwg