Fluid delivery device for killing weeds
OwnerJohn Weiss, Patrick Auell +1inventors
InventorsJohn Weiss, Patrick Auell, Shawn Stokes
Life of this patent
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Abstract
A liquid delivery device for killing weeds. The liquid delivery device includes a main tube, a handle, and a pump housing that includes a pump chamber. A reservoir is disposed in the main tube, and a plunger is connected to the reservoir and positioned in the pump chamber. The plunger is operative to push a liquid contained in the pump chamber through a check valve and dispensing orifices when a user moves the reservoir with respect to the main tube and pump housing. The device also includes a spike extending from the pump housing and an annular stand-off surrounding the spike. The spike is adapted to disrupt the soil and damage the root structure of a target weed.
Claims18
A fluid delivery device, comprising:
- a main tube;
- a pump housing attached to the main tube and including a pump chamber;
- a check valve including one or more dispensing orifices in fluid communication with the pump chamber;
- a reservoir disposed at least partially within the main tube for reciprocating movement therein, wherein the reservoir is a replaceable cartridge including a plunger opening and a frangible seal positioned proximate the plunger opening;
- and
- a plunger connected to the reservoir and positioned in the pump chamber, the plunger including a connector end having a protrusion operative to breech the frangible seal when the connector end is inserted into the plunger opening for connection to the reservoir, the plunger being operative to push a fluid contained in the pump chamber through the check valve and the one or more dispensing orifices upon reciprocating movement of the reservoir.
A fluid delivery device, comprising:
- a main tube;
- a reservoir containing a fluid disposed at least partially within the main tube, wherein the reservoir is a replaceable cartridge including a plunger opening and a frangible seal positioned proximate the plunger opening;
- a pump attached to the main tube, including:
- a pump housing extending along an axis and including a pump chamber;
- a plunger connected to the reservoir and positioned in the pump chamber, the plunger including a connector end having a protrusion operative to breech the frangible seal when the connector end is inserted into the plunger opening for connection to the reservoir, wherein the plunger is slidable along a longitudinal axis of the pump in a pumping direction and a recharge direction;
- a plunger valve connected to the plunger wherein the plunger valve is operative to seal against a face of the plunger when moving in the pumping direction and operative to uncover a supply opening when moving in the recharge direction placing the reservoir and the pump chamber in fluid communication and filling the pump chamber with the fluid from the reservoir;
- and
- a check valve downstream of the pump chamber and in fluid communication with the pump chamber;
- wherein movement of the plunger forces the fluid contained in the pump chamber through the check valve;
- and
- a spike extending axially from the pump housing, wherein the spike comprises at least one orifice in fluid communication with the check valve operative to distribute the fluid.
A liquid delivery device, comprising:
- a main tube having proximal and distal end portions;
- a handle disposed on the proximal end portion of the main tube;
- a reservoir disposed at least partially within the main tube, wherein the reservoir is a replaceable cartridge including a plunger opening and a frangible seal positioned proximate the plunger opening;
- a pump attached to the distal end portion of the main tube, including:
- a pump housing including a pump chamber;
- a plunger for reciprocating movement connected to a first end of the reservoir and positioned in the pump chamber, the plunger including a connector end having a protrusion operative to breech the frangible seal when the connector end is inserted into the plunger opening for connection to the reservoir;
- and
- a check valve in fluid communication with the pump chamber;
- wherein movement of the plunger pushes a liquid contained in the pump chamber through the check valve;
- a spike extending from the pump housing containing at least one orifice in fluid communication with a discharge of the check valve;
- and
- a stand-off extending from the pump housing and positioned adjacent the spike.
Dependencies are inferred from the claim text.