Safety guard for power-take-off shaft
US4663984A · kind A · utility
9Cited by
5References
3Claims
0Family size
Inventor
Key dates
| Filing date | Dec 3, 1985 |
| Grant date | May 12, 1987 |
| Priority date | — |
| Expiry date | Dec 3, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2191
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A guard for a power transmission shaft such as a tractor pto shaft 18,20 comprises a flexible convoluted tubing 24 with end couplings 26 which together totally enclose the rotating parts. The tubing 24 can extend and retract axially to suit a variety of shaft lengths, and can flex transversely to accommodate turning of the tractor/implement combination. A tube 34 journalled on bearings 36, or equivalent bearing means, prevents damage to the tubing 24 by the shaft 18,20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.