| http://www.w3.org/ns/prov#value | - In the preferred embodiment of the invention the body elements 20 and skirt 18 are aligned with respect to one another by means of a wrist pin 22, which in turn is connected to a piston rod (not shown), although it is understood that body elements 20 and skirt 18 may be aligned by means of pins, bolts or other methods.
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