Patent ID: 8757520

Claim:
A system for distributing granular product, comprising: a spreader device comprising: at least one wheel to propel the spreader device over terrain or other surface; a particle launcher; a cartridge station configured to engage with a cartridge, comprising: a particle conveyor configured to facilitate the flow of granules from the cartridge to the particle launcher; a cartridge activator, configured to activate and deactivate the flow of granular product out of a cartridge; an activation controller configured to control the cartridge activator and thereby control the activation and deactivation of an engaged cartridge; and a cartridge comprising: a container containing granular product; a fitment, functionally joined to the container, configured to engage with the cartridge station comprising: a fitment shell that mechanically engages with the cartridge station; a flow metering gate, comprising an aperture, allowing a flow of a granular material, the flow metering gate configured to mate with a granular chute on the spreading device; and an activator to activate and deactivate the flow of the granular material using a moveable shutoff plate that is mechanically actuated through an interface with the spreading device, the interface comprising a slide engager that mates with a knob on the cartridge engager.