Control system and method for stopping the rotation of a cutting blade when the mower is placed in reverse
US6026634A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1997 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Jan 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D2101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A control system is used with an associated mower having a cutting blade, a drive shaft for rotating the cutting blade, first and second drive wheels, and a power train for driving the first and second drive wheels. The control system has an electric clutch for selectively coupling the cutting blade to the drive shaft, first and second handles for independently driving the first and second drive wheels, first and second switches selectively switchable between first and second positions, a relay for electrically connecting the first and second switches to the electric clutch and control rods for mechanically connecting the first and second handles to the first and second switches. First and second handles are placeable into reverse positions. This causing first and second bell cranks to rotate about a control shaft which lifts first and second control rods. When the control rods are lifted, first and second switches are switched and power is disconnected to the electric clutch. The cutting blade is thereby detached from the drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.