Mowing apparatus
US5027591A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1990 |
| Grant date | Jul 2, 1991 |
| Priority date | — |
| Expiry date | Feb 21, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01G3/062
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a mowing apparatus, which includes a motive power source, first and second cutting wheels slidably superposed with each other and provided with a number of grass cutting edges, and mechanism for reciprocatively rotating each cutting wheel in opposite directions through a predetermined angle. The rotating mechanism includes a first shaft coupled to the first wheel, a cylindrical-shaped second shaft into which the first shaft is rotatably and coaxially inserted and coupled to the second wheel, and converting mechanism provided between the power source and the first and second shafts for converting the rotational motion from the power source into two oppositely and reciprocatively rotational motions of the first and second shaft within the predetermined angle. The rotational motion converting mechanism comprises a cam shaft rotatably driven by the motive power source, the cam shaft being provided in parallel with the first and second shafts, first and second eccentric cam plates which are eccentrically fixed to the cam shaft so as to be radially symmetrical with each other with respect to a central axis of the cam shaft, and first and second arms each having opposite ends…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.