Low speed rotary mower
US4129977A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1974 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | Aug 2, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D2101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rotary mower in which grass cutting and collection of cut grass particles is achieved with a relatively low blade tip speed. A cutting blade is mounted for rotation about a vertical axis within the symmetrical expansion type mower housing in which the expansion top wall has a substantial rise to a discharge opening vertically above the cutting blade. The housing has a continuous exterior side wall surrounding the cutting blades and extending above the sail portion thereof. The sail portions of the blade trailing the cutting edges have substantial inward and upward rake angles which result in combined mechanically throwing of the grass and a pumping effect results from the housing and blade configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.