Cutting blade for a mowing apparatus
US5054276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Apr 11, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D34/404
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed herein is a cutting blade for a mowing apparatus, which comprises a pair of first and second pivotal cutting wheels slidably superposed with each other and each provided with a number of grass cutting edges along its circumference, each of the teeth having a major surface, two side edges and an outer periphery edge; and mechanism for reciprocatingly rotating each cutting wheel in opposite directions through a predetermined angle, respectively. At least one of the side edges of each of the teeth of the cutting wheels is defined by an inclined surface forming an acute angle relative to a major surface of the tooth so as to form a cutting edge, and the outer periphery edge is defined by a plane substantially perpendicular to the major surface of the tooth. Namely, there is no sharp edge in the outer peripheries of the teeth of the cutting wheels or the free ends of teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.