Quick attach rotary mower blade system
AssigneeDeere & Company
InventorRobert D. Haun
Life of this patent
Estimating the term…
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.
Claims12
A quick attach rotary mower blade system, comprising:
- a spindle extending through a flange mounted on a mower deck, the spindle having a first pair of fan-shaped projections extending radially outwardly from a lower end thereof;
- a spring-loaded collar having a bore through which the lower end of the spindle extends and having a second pair of fan-shaped projections extending radially outwardly from the bore;
- and
- a mower blade having a mounting hole including a circular center opening and a pair of fan-shaped openings extending radially outwardly therefrom;
- the mower blade installable 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.
A quick attach rotary mower blade system, comprising:
- a spindle extending vertically through a spring-loaded collar;
- a first pair of radially extending fan-shaped projections on a lower end of the spindle that are aligned with a second pair of radially extending fan-shaped projections on a lower end of the spring-loaded collar to extend through a mounting hole of a rotary mower blade;
- the spring-loaded collar rotatable to move the second pair of fan-shaped projections 90 degrees out of alignment with the first pair of fan-shaped projections to clamp the rotary mower blade between the first pair of fan-shaped projections and the spring-loaded collar.
A quick attach rotary mower blade system, comprising:
- a mower blade with a mounting hole having a circular center opening and a pair of fan-shaped openings extending radially outwardly from the opening, the mounting hole sliding onto a vertical spindle having a first pair of fan-shaped projections and a spring loaded collar with a second pair of fan-shaped projections;
- the mower blade compressing a spring in the spring-loaded collar, and rotating along with the spring-loaded collar to move the second pair of fan-shaped projections out of alignment with the first pair of fan-shaped projections which remain in place under the mower blade;
- and
- the spring urging the spring-loaded collar and the second pair of fan-shaped projections into a pair of gaps between the first pair of fan-shaped projections to clamp the mower blade to the vertical spindle.
Dependencies are inferred from the claim text.