Quick blade attachment structure for mowers
US5622035A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Apr 22, 1997 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S56/17
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a quick blade attachment structure For quickly but securely attaching and detaching one or a plurality of blades to and from a mower. A rotary member (3) of a mower (1) includes a blade holder (4) and a support member (5) coaxially attached to the blade holder (4) to allow pivotal movement of the support member (5). A pair of blades (23,23) are supported by ends (9a, 9a) of rimmed pins (9,9) projected from a lower surface (4a) of the blade holder (4). A wave washer (16) is interposed between the support member (5) and a cap (17). When the rotary member (3) is assembled by a clamp screw (18), pressing force of the wave washer (16) allows the support member (5) to be rotated integrally with the blade holder (4). The support member (5) further has a pair of grooves (12). Each groove (12) includes a deeper portion (13) which receives the end (9a) of the rimmed pin (9) through relative rotation of either the blade holder (4) or the support member (5) against the pressing force of the wave washer (16), and a guide element (14) which the end (9a) of the rimmed pin (9) moves along to be eventually released from the support member 5. The structure of the invention all…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.