automatic dry wall compound applicator
OwnerJohn S. Conboyinventor
Life of this patent
Estimating the term…
Abstract
An automatic dry wall applicator having an applicator head connected to a translucent body with a quick release mechanism for easy cleaning and a gas spring dispensing system which moves a piston head in the body to dispense dry wall compound. A loading mechanism uses a manual pump which generates sufficient force to overcome the gas spring pressure to force dry wall compound from a reservoir into the head and body to retract the piston head during loading. The piston rod engages a cam brake which frees the rod during loading and locks the piston head from dispensing unless the cam is manually released from the rod. In one form of the invention, an on-off valve closes the applicator head during loading and can be opened to permit dispensing of dry wall compound.
Claims17
A dry wall compound applicator comprising
- (a) a body for holding a supply of dry wall compound;
- (b) an applicator head on a first end of said body, said applicator head having a discharge nozzle;
- (c) a gas spring operator on a second end of said body, said gas spring operator having loading and discharge conditions for dispensing dry wall compound from the body through the applicator head discharge nozzle when in discharge condition, the gas spring operator having a sealed gas chamber containing a compressible gas and a piston head and rod which extend out of the gas chamber into the body, the piston head being axially movable through the body and the rod being axially movable through the body and the sealed gas chamber;
- (d) a loading mechanism for admitting dry wall compound into the body against the piston head to move the rod into the gas chamber when the gas spring operator is in loading condition, and
- (e) a braking mechanism for controlling the operation of the gas spring operator in its discharge condition, said braking mechanism- having a cam positioned adjacent to the piston rod and pivoted to engage the rod when the gas operator is in discharge condition, and a brake control lever for disengaging the cam from the rod to allow the gas operator to move the piston head toward the discharge nozzle and discharge dry wall compound.
Dependencies are inferred from the claim text.