Patent · US Active

Hydroformed balance shaft

US12071999B2 · kind B2 · utility

0Cited by

1References

21Claims

0Family size

Assignee

Linamar Corporation · CA

Inventors

Michael Biga, II · Milford, US
Allen Hale · Plymouth, US
Jan Krassler · Zwickau, DE
Mario Lindner · Chemnitz, DE
Markus Haertel · Zwickau, DE

Key dates

Filing date	Jul 2, 2020
Grant date	Aug 27, 2024
Priority date	—
Expiry date	Aug 27, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16F2226/04
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An engine balance shaft (20) for an internal combustion engine (24) is provided having reduced total mass and rotational inertia while having sufficient bending stiffness and sufficient unbalance mass. The balance shaft (20) is formed by fixedly coupling a counterweight (56), a front bearing journal (68), a rear bearing journal (60), a tail piece (40), and a nose piece (44) to a hollow tube (52). The hollow tube (52) is hydroformed to expand the diameter of the tube and fasten the desired components to the tube (52).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.