Wheel rake
US5305590A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Jul 23, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S56/21
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An agricultural rake especially designed for gathering wide swaths of agricultural field crops into windrows prior to baling is provided. The rake includes a primary frame, a pair of secondary rake frames pivotally and shiftably mounted to the primary frame, and a plurality or bank of radially-tined wheel rakes supported by the secondary frames. The secondary rake frames are free to pivot in a plane perpendicular to the direction of travel to prevent undo stress on the frames. Both the angle of deployment of the secondary frames as well as the distance between the frames is adjustable to accommodate different swath widths and windrow sizes. A unique rake suspension assembly provides for the easy shifting of the rake bases between the raking and transport positions while providing for desired tensioning of the rakes during raking operations and elevating the rake frames during transport. In an embodiment, castors are included to support the rake suspension assembly. Adjustable braking is provided to limit the oscillation of the castors during operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.