Motor vehicles – Special wheel base – Having only two wheels
Patent
1985-06-07
1987-10-13
Mitchell, David M.
Motor vehicles
Special wheel base
Having only two wheels
280274, 280279, 280281R, B62K 1102, B62K 302
Patent
active
046992332
ABSTRACT:
A pair of right and left main pipes and or a pair of right and left down tubes, or a main pipe and a down tube are formed of one piece of continuous pipe material with its intermediate portion warped. The head pipe has a supporting surface portion corresponding to the surface of the aforementioned warped intermediate portion. This supporting surface portion is integrally cast together with a tubular main body portion of the headpipe. The warped intermediate portion of the pipe material is fixed to the supporting surface portion of the head pipe by welding. According to the present invention, the constructions and shapes of the welded portions are simplified. Thus, the invention is best suited to robot welding in order to improve productivity. Also, the head pipe is formed at its front surface or its both sides of its tubular main body portion with an opening in order to reduce the weight.
REFERENCES:
patent: 2333642 (1943-11-01), Dempsey
patent: 2493037 (1950-01-01), Simon
patent: 2535540 (1950-12-01), Lechmere
patent: 3226132 (1965-12-01), Otani
patent: 3860265 (1975-01-01), Weiss
patent: 4111447 (1978-09-01), Ishida
patent: 4427209 (1984-01-01), Morita
patent: 4541649 (1985-09-01), Grunfeld
patent: 4561670 (1985-12-01), Takada
Koga Noritaka
Yamagiwa Toshio
Diederiks, Jr. Everett G.
Honda Giken Kogyo Kabushiki Kaisha
Mitchell David M.
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