Electric two-part material dispenser
First Claim
Patent Images
1. 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.
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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.
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Citations
40 Claims
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1. A hand held viscous fluid dispenser for dispensing a two-component viscous material comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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- 19. 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.
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31. A dispenser for two part materials comprising:
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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. - View Dependent Claims (32, 33)
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34. 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:
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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. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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Specification