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US 12,583,011 B2Granted
Drive mechanism and viscous material dispensing gun
OwnerMiro Petrovicinventor
Life of this patent
Estimating the term…
Abstract
A compact drive mechanism for converting rotary motion to linear motion comprising a casing, gearbox, and beam coupled to the casing and gearbox, wherein the gearbox advances along the casing and the beam extends out from the casing simultaneously in response to rotary input to the gearbox. In its preferred embodiment, the invention comprises the drive mechanism incorporated into a handheld viscous material dispenser, wherein the beam further comprises a plunger face which acts on a viscous material cartridge, such as a caulk cartridge, to eject the viscous material from the cartridge.
Claims20
A viscous material dispenser comprising:
- a viscous material chamber;
- a drive mechanism comprising:
- an elongate casing;
- a casing rack gear mounted to said elongate casing, said casing rack gear substantially parallel to a longitudinal axis of said elongate casing;
- a gearbox assembly retained by said elongate casing for traversing motion along the longitudinal axis of said elongate casing, said gearbox assembly comprising:
- a carriage;
- a driven gear train mounted to said carriage, said driven gear train meshing with said casing rack gear;
- a driver gear connected to said carriage and meshing with said driven gear train;
- and
- an extendable plunger ram retained by said elongate casing, said plunger ram comprising:
- a beam rack gear, said beam rack gear meshing with said driven gear train;
- and
- a plunger face mounted to a first end of said plunger ram,
- wherein rotation of said driver gear simultaneously causes said gearbox assembly to traverse said elongate casing along said casing rack gear and said plunger ram to extend into said viscous material chamber.
11 more elements
A method for dispensing a viscous material comprising:
- providing a viscous material dispenser comprising:
- a viscous material chamber, said viscous material chamber comprising a dispenser port;
- a drive mechanism comprising:
- an elongate casing;
- a casing rack gear mounted to said elongate casing, said casing rack gear substantially parallel to a longitudinal axis of said elongate casing;
- a gearbox assembly retained by said elongate casing for traversing motion along the longitudinal axis of said elongate casing, said gearbox assembly comprising:
- a carriage;
- a driven gear train mounted to said carriage, said driven gear train meshing with said casing rack gear;
- a driver gear connected to said carriage and meshing with said driven gear train;
- and
- an extendable plunger ram retained by said elongate casing, said plunger ram comprising:
- a beam rack gear, said beam rack gear meshing with said driven gear train;
- and
- a plunger face mounted to a first end of said plunger ram,
- wherein rotation of said driver gear simultaneously causes said gearbox assembly to traverse said elongate casing along said casing rack gear and said plunger ram to extend into said viscous material chamber;
- introducing a viscous material into said viscous material chamber;
- and
- rotating said driver gear, thereby ejecting said viscous material through said dispenser port.
15 more elements
A viscous material dispenser comprising:
- a drive mechanism section comprising:
- an elongate casing;
- a first rack gear mounted inside said elongate casing and aligned with a longitudinal axis of said elongate casing;
- a gearbox assembly retained within said elongate casing for traversing motion along said longitudinal axis of said elongate casing, said gearbox assembly comprising:
- a carriage;
- a drive shaft connected to said carriage, said drive shaft adapted to be coupled to a rotary drive source;
- a driver gear mounted to said drive shaft;
- and
- a driven gear train mounted on said carriage and meshing with said driver gear and said first rack gear so that said gearbox assembly moves along said elongate casing in a first direction in response to clockwise rotational motion of said rotary drive source and moves along said elongate casing in a second direction in response to counterclockwise rotational motion of said rotary drive source;
- a plunger ram slidably retained by said elongate casing for extending motion relative to said elongate casing, said plunger ram comprising:
- a plunger face mounted to a first end of said plunger ram;
- and
- a second rack gear meshing with said driven gear train of said gearbox assembly so that said plunger ram extends and retracts in response to alternating directions of rotational motion of said rotary drive source concurrently with the movement in said first direction and said second direction of said gearbox carriage;
- and
- a viscous material chamber connected to said drive mechanism section, said viscous material section comprising:
- a receiver port into which said plunger ram extends to act upon a viscous material;
- and
- a dispensing port through which said viscous material exits said viscous material chamber when acted upon by said plunger ram.
15 more elements
Dependencies are inferred from the claim text.