which is the same as f and c but displaced would determine the location of the new reduced enclosing space defined by curve g 39 in fig5 a 5d and 7 the letter a designates the axis of the crankshaft ofscroll compressor 100 having a shell 30 the letter b designates the axis of the eccentric driving the orbiting scroll 20 as well as the axis of scroll 20 fig7 illustrates the parts on center with a and b coaxial whereas fig5 a 5d illustrate the relationship of the parts with b orbiting a at 90 u00b0 intervals around orbit path c circle d represents the maximum clearance for solid internal components points a and b path c and circle d are the same values in fig4 a 4d 5a 5d 6 and 7 referring specifically to fig7 the parts are on center so that axes a and b are coaxial points l and m which correspond to points e and h respectively of fig6 are independently laid out with respect to the outer operating envelope or minimum enclosing space which is represented by curve g 39 in fig6 as a result circles n and o which respectively define the orbit paths of points l and m are tangent to the same curve p which represents the outer operating envelope or minimum enclosing space and corresponds to curve g 39 of fig6 and represents a space saving defined by the difference of g and g 39 in fig6 and.