Electric two-part material dispenser
AssigneeMeritool LLC
InventorsTimm Herman, Kevin Whited, Raymond Fritz
Life of this patent
Estimating the term…
Abstract
An electric dispensing gun for dispensing two part viscous materials. The dispensing gun features a directly driven pinion/rack assembly and an optional mixing manifold for dispensing material from sausage packaging. A controller controls operation of the dispensing gun to implement dosage control and automatic power reverse features.
Claims40
A hand held viscous fluid dispenser for dispensing a two-component viscous material comprising:
- an electric drive motor including a motor shaft having a shaft axis of rotation;
- a pinion gear driven by the motor having a pinion axis of rotation that is generally parallel to and coincident with the shaft axis of rotation;
- a pair of parallel, spaced racks that directly engage and are driven by the pinion gear;
- a piston connected to a distal end of each of the racks for applying force to a component viscous material container to dispense viscous fluid contained therein;
- and
- a chamber that encases the pistons and racks for retaining the component viscous material containers in engagement with the pistons and wherein the chamber has an orifice at a dispensing end through which the two-component viscous material flows.
The dispenser of clam 1 including a set of planetary gear stages interposed between the motor shaft and pinion gear that reduce the speed of the motor shaft.
A dispenser for two part materials comprising:
- a) structure defining a space for support of a pair of tubes each containing prior to use, a supply of a respective one of the two parts;
- b) a pair of racks each for coaction with an associated one of a pair of pistons, the pistons lack being carried by a selected one of:
- i) a respective distal end of:
- an associated rack and,
- ii) a tube of an associated one of the material parts;
- c) an elongated pinion engaging both racks for concurrently advancing the racks to expel material from a pair of such tubes of material supported by the structure;
- d) a handle connected to the structure and projecting laterally from the structure in a pistol grip arrangement;
- e) a battery operated electric motor carried by the handle;
- f) a battery physically connected to the handle and electrically connected to the motor selectively to energize the motor;
- g) a planetary driver operationally interposed between and connected to the motor and the pinion for transmitting rotational forces from the motor to the pinion;
- and,
- h) a clutch for selectively establishing a driving connection between the motor and the pinion.
A control apparatus for controlling a drive motor in a viscous material dispenser wherein the drive motor moves a piston that engages a viscous material container in response to a trigger actuation to dispense the viscous material through a dispensing nozzle, the control apparatus comprising:
- a voltage control module for setting a threshold voltage and maintaining motor voltage at the set voltage;
- a current control module for setting a threshold current and maintaining motor current at the set voltage;
- a dose control module for controlling a dose amount that is applied during an application cycle;
- and
- a reload control module for controlling piston movement to facilitate unloading of a spent viscous material container and loading a new viscous material container.
Dependencies are inferred from the claim text.