Metal working – Method of mechanical manufacture – Structural member making
Patent
1995-02-17
1997-09-16
Bryant, David P.
Metal working
Method of mechanical manufacture
Structural member making
294211, 72 61, B23P 1700
Patent
active
056667272
ABSTRACT:
Unitary vehicle body compartment structures of the type comprising wall members and/or interconnected frame members that define the surface of a cylinder are made by providing a tube that is initially smaller than the cylinder and expanding at least portions of the tube to the shape of the body compartment structure. Functional openings such as windows are trimmed from the deformed tube to further define the compartment. A complete body may be assembled by attaching two or more such compartments such as, e.g., a passenger compartment, an engine compartment and a luggage compartment. Tube or tube segments may also be employed to make segments of the body compartment or smaller body parts such as doors and hoods.
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Bryant David P.
General Motors Corporation
Grove George A.
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