Balanced epicyclic sickle drive
US7121074B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2005 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | May 31, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/18208
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A counterbalancing epicyclic sickle drive has a pair of oppositely rotating weights that offset the inertial forces of the sickle during its abrupt acceleration and deceleration at opposite ends of its path of travel. One of the weights rotates with the main shaft of the drive about its longitudinal axis, while the second weight is fixed to an oppositely rotating crankshaft that orbits about the axis of the main shaft in eccentric relationship thereto. The weight on the main shaft is heavier than the weight on the crankshaft so as to offset changes in inertial forces produced by the crankshaft weight during increased acceleration of its center of gravity at opposite ends of its elliptical path of travel about the axis of the main shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.