Powered caulking gun
OwnerJohn O. H. Niswongerinventor
Life of this patent
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Abstract
A caulking gun apparatus is described. In one embodiment the caulking gun includes an electric motor axially coupled to a plurality of cams having uneven surfaces thereon. In one aspect, the uneven surfaces are in slidable contact with at least one driving lever slidably positioned on a piston shaft. The piston shaft includes a piston end that is configured to engage with a cartridge used to dispense fluids such as caulk. The uneven surfaces are arranged relative one another such that when rotated, two or more of the cams about evenly exchange power transmission from the motor to the piston shaft to provide about an even fluid flow from a dispensing end of the cartridge.
Claims20
A caulking gun apparatus configured to support a cartridge and dispense caulk from the cartridge, the apparatus comprising:
- a body configured to hold the cartridge in a dispensing position,
- a piston shaft configured to engage the cartridge for dispensing of the caulk, the piston shaft having a plurality of driving levers in slidable engagement therewith;
- a motor means disposed within the body coupled to a motor shaft;
- and
- a plurality of cams axially coupled to the motor shaft,
- at least one cam of the plurality of cams having uneven surfaces in slidable engagement with at least one driving lever of the plurality of driving levers;
- at least one other cam of the plurality of cams having uneven surfaces in slidable engagement with at least one other driving lever of the plurality of driving levers;
- each of the uneven surfaces including at least one lifting surface and at least one retrograde surface;
- the lifting surfaces and the retrograde surfaces being positioned such that during rotation of the motor shaft, power transmission is provided from the motor to the piston shaft by the lifting surfaces, wherein the power is exchanged between the at least one cam and the at least one other cam through the at least one driving lever and the at least one other driving lever within a desired power transmission range.
A caulking gun apparatus configured to support a cartridge and dispense caulk from the cartridge, the apparatus comprising:
- a body configured to hold the cartridge in a dispensing position;
- a motor means disposed within the body coupled to a motor shaft;
- a plurality of cams axially coupled to the motor shaft;
- and
- a piston shaft configured to engage the cartridge for dispensing of the caulk, the piston shaft having a plurality of driving levers in slidable engagement therewith, each of the plurality of cams having surfaces in slidable engagement with at least one of the plurality of driving levers, the surfaces in slidable engagement describing a plane, each of the plurality of planes forming an acute angle with the motor shaft, the planes being positioned such that during rotation, power transmission from the motor to the piston shaft is exchanged between two or more of the plurality of cams through two or more of the plurality of driving levers within a desired power transmission range.
A method for supporting a cartridge and dispensing caulk from the cartridge, the method comprising:
- configuring a body to hold the cartridge in a dispensing position;
- disposing a motor means within the body;
- coupling the motor means to a plurality of cams, each cam having at least one cam surface;
- configuring a piston shaft to engage the cartridge for dispensing of the caulk;
- engaging the piston shaft with a plurality of driving levers;
- slidably engaging each of the cam surfaces with at least one of the plurality of driving levers;
- rotating the cams;
- and
- positioning the cam surfaces such that during rotation of the cams, power transmission from the motor to the piston shaft is exchanged between two or more of the plurality of cams through two or more of the plurality of driving levers within a desired power transmission range.
Dependencies are inferred from the claim text.