US 12,270,214 B2
Mortar applicator and mortar application system having same
Giovanni Pucella, Chicoutimi (CA); Lavoie Marc-Michel, Chicoutimi (CA); Guillaume Keighan, Saint-Charles-de-Bourget (CA); Jean-Daniel Dufour, Alma (CA); Eric Goudreault, Jonquiere (CA); and Jean-Philippe Morasse, Alma (CA)
Assigned to GROUPE RÉFRACO INC., Chicoutimi (CA)
Appl. No. 18/001,373
Filed by GROUPE REFRACO INC., Chicoutimi (CA)
PCT Filed Jun. 9, 2021, PCT No. PCT/CA2021/050788
§ 371(c)(1), (2) Date Dec. 9, 2022,
PCT Pub. No. WO2021/248241, PCT Pub. Date Dec. 16, 2021.
Claims priority of provisional application 63/036,715, filed on Jun. 9, 2020.
Prior Publication US 2023/0235583 A1, Jul. 27, 2023
Int. Cl. E04G 21/22 (2006.01); B05C 5/02 (2006.01); B25J 18/00 (2006.01); E04G 21/20 (2006.01); B05C 17/01 (2006.01)
CPC E04G 21/22 (2013.01) [B05C 5/0233 (2013.01); B05C 5/0262 (2013.01); B25J 18/00 (2013.01); E04G 21/202 (2013.01); B05C 5/0216 (2013.01); B05C 17/0103 (2013.01); B05C 17/012 (2013.01); B05C 17/0146 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A mortar applicator comprising:
a duct having a first end and a second end;
a piston movably mounted within the duct, the piston dividing the duct into first and second variable volume chambers on opposite sides of the piston, the first variable volume chamber being defined between the piston and the first end of the duct, the second variable volume chamber being defined between the piston and the second end of the duct;
a pump fluidly connected to the first variable volume chamber to selectively fill the first variable volume chamber with mortar;
a nozzle operatively connected to the first end of the duct, the nozzle defining a nozzle opening in fluid communication with the first variable volume chamber to discharge the mortar contained therein;
a piston actuator operatively connected to the piston; and
a cover member selectively movable between an open position and a closed position to respectively allow and prevent the mortar to be discharged through the nozzle opening,
the mortar applicator being operable in a discharge mode and a refill mode,
in the discharge mode, the piston actuator moving the piston toward the first end of the duct to force the mortar contained in the first variable volume chamber through the nozzle opening to discharge the mortar from the mortar applicator; and
in the refill mode, the cover member being disposed in the closed position, and the pump filling the first variable volume chamber with the mortar thereby forcing the piston to retract away from the first end of the duct.