Balance shafts having minimal mass

Details Balance shafts having minimal mass Balance shafts having minimal mass

1996-07-09

1999-01-12

Marmor, Charles A.

Machine element or mechanism

Elements

Cranks and wrist pins

1231922, F16C 320, F02B 7506

Patent

active

058573887

ABSTRACT:
A balance shaft for rotating machinery such as a vehicle engine which minimizes the mass or weight of the balance shaft by optimizing the material usage in accordance with the standards and parameters established for the balance shaft. For rotating couple-type shafts, the two balance weights each have surfaces substantially forming hyperbolic curves. In addition, the connector portion between the balance weights has a cross-section with recessed sides in order to reduce the mass or weight of the balance shaft. For single unbalance-type shafts, the connector portion also has a cross-section with recessed sides.

REFERENCES:
patent: 4617885 (1986-10-01), Oshiro et al.
patent: 4741303 (1988-05-01), Kronich
patent: 4819505 (1989-04-01), Takubo et al.
patent: 5174257 (1992-12-01), Ozawa
patent: 5230311 (1993-07-01), Kuhn et al.
patent: 5253547 (1993-10-01), Yoneyama et al.
patent: 5483932 (1996-01-01), Friedman et al.
patent: 5535643 (1996-07-01), Garza

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