FIELD: engines and pumps.
SUBSTANCE: proposed mandrel comprises central rigid part, resilient process shell and working fluid feed system. Said central rigid part has lengthwise stiffness ribs with forming elements, say sections, and replaceable straps making the isolated chambers connected with working fluid feed system. Mandrel central stiff part cross-section perimeters and those of resilient process shell correspond to housing cross-section inner perimeter over the entire length of said housing. Bores are made along forming elements and replaceable straps.
EFFECT: higher manufacturability and efficiency.
4 dwg
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