Compact second order balance shaft arrangement with low inertia driven shaft
US8468995B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Sep 15, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2183
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A balancer assembly for an engine includes a first balance shaft and a second balance shaft parallel with and laterally spaced from the first balance shaft. The first balance shaft includes a first counterweight portion and a second counterweight portion axially spaced from each other, with each defining a first radius. The second balance shaft includes a central counterweight defining a second radius. The central counterweight is axially disposed between the first counterweight portion and the second counterweight portion to allow a radial overlap with the first counterweight portion and the second counterweight portion, with the first radius being greater than the second radius.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.