Rotary lawn mower accessories
US4715173A · kind A · utility
Inventor
Key dates
| Filing date | Jun 4, 1985 |
| Grant date | Dec 29, 1987 |
| Priority date | — |
| Expiry date | Jun 4, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S56/09
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention provides accessories for use with a rotary lawn mower in which the conventional bar having oppositely facing cutting edges is replaced with an accessory bar to which a variety of grass grooming accessories can be easily attached. The accessory bar can accommodate replaceable grass cutting elements, grass mulching elements and lawn power raking elements. The elements can be replaced without removing the accessory bar from the mower and are balanced to reduce vibration. Two of the accessories have cutting edges which are factory sharpened on relatively low cost elements, and thus can be discarded when blunt and replaced with new, low cost factory sharpened elements, thus maintaining balance. The rake accessory has a variation which permits a fine adjustment of vertical height of the rake above the lawn, to accommodate lawn mowers having coarse or no height adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.