Folding hay rake
US5540040A · kind A · utility
24Cited by
22References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1995 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Mar 1, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D78/146
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A deployment spreader with two arms and an elbow member arrangement, optionally and preferably having a locking mechanism involving an overcenter arrangement of certain pivots, for deployment or retraction of a folding hay rake which is towable by a tractor. The hayrake rake has a primary towable frame with right and left secondary frames pivotally attached adjacent the rear of the primary frame. The deployment spreader assembly is pivotally attached to the primary and secondary frames for pivoting the secondary frame relative to the primary frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.