Composite propeller shaft construction and method of making
Abstract:
A VECHICLE PROPELLER SHAFT INCLUDES A PAIR OF SPACED END MEMBERS HAVING INNER ENDS WITH CHARACTERIZED SURFACES. A LIGHT BUT STIFF CYLINDRICAR ARBOR, SUCH AS OF POLYURETHANE FOAM, CONNECTS THE END MEMBERS AND A TUBE FORMED OF HARDENED THERMOSETTING RESIN REINFORCED WITH FIBER GLASS FILAMENTS IF FORMED ON THE ARBOR AND INTERLOCKINGLY ENGAGES THE CHARACTERIZED SURFACES OF THE END MEMBERS. A METHOD OF FORMING SUCH A SHAFT INCLUDES STEPS OF FORMING A POLYURETHANE FOAM ARBOR BETWEEN THE END MEMBERS AND FORMING THE RESIN BONDED FIBERGLASS TUBE IN PLACE ON THE ARBOR AND END MEMBERS.
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