Quick attach rotary mower blade system
US10517212B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Mar 30, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D2101/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A quick attach rotary mower blade system includes a spindle having a first pair of fan-shaped projections, and a spring-loaded collar having a bore through which the lower end of the spindle extends and a second pair of fan-shaped projections. A mower blade mounting hole includes a circular center opening and a pair of fan-shaped openings. The mower blade may be installed on the spindle by aligning the pair of fan-shaped openings with the first and second pairs of fan-shaped projections, moving the mower blade and spring-loaded collar upwardly, and rotating the mower blade and spring-loaded collar 90 degrees to interlock the second pair of fan-shaped projections between the first pair of fan-shaped projections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.