Granted Patent B2

US 12,553,203 · App. 18/304,379 · Granted Feb 17, 2026

Inventors: Chi Kwan Adye Kwok (Hong Kong, HK); Lai Ming Leung (Hong Kong, HK); Xianrui Chen (Hong Kong, HK); Zhihua Xiao (Hong Kong, HK)

Assignee: Nano and Advanced Materials Institute Limited

E02B11/02B28B3/205

Abstract

Claims (17)

1 . Apparatus for automatically extruding and forming a finished concrete channel, comprising:

a frame including support rails for positioning the apparatus over a ditch and wheels, wherein each of the wheels is independently height adjustable;

a concrete-receiving hopper attached to the frame for delivering received concrete into the ditch to be shaped into a channel form;

a mold having a projection to define a concrete surface of the channel positioned beneath a top portion of the frame and configured to be received in a hollow mating portion of a laterally-reciprocating piston to shape the received concrete;

a lever system for driving the reciprocating piston through a mechanically-linked motor, wherein the lever system comprises a flywheel, a belt connected between the flywheel and the motor to drive the flywheel by the belt, one or more main levers, and one or more secondary levers;

wherein the one or more secondary levers are connected to the one or more main levers;

wherein the flywheel is connected to a lever-driving wheel;

and wherein the lever system further comprises a motor lever connected to the lever-driving wheel such that the flywheel drives the motor lever in a reciprocating vertical motion to cause the lever system to move up and down and produce a corresponding reciprocating motion of the reciprocating piston for propelling the apparatus;

a vibrator cooperating with the concrete-receiving hopper to urge the received concrete into the ditch to be shaped by the mold; and

guide rails for sliding the wheels, wherein the guide rails are positioned on surfaces of grounds adjacent and above the ditch;

wherein the frame, the concrete-receiving hopper, and the lever system are positioned on top of a level of the grounds adjacent and above the ditch; and

wherein the apparatus is propelled by the reciprocating motion of the reciprocating piston against the molded concrete, which moves the apparatus along the ditch for forming a continuous extruded channel.

2 . The apparatus for automatically extruding and forming a finished concrete channel according to claim 1 , wherein the vibrator includes a waterproof membrane for contacting and urging the received concrete and a vibrating frame to which the waterproof membrane is attached.

3 . The apparatus for automatically extruding and forming a finished concrete channel according to claim 1 , further comprising supporting ribs positioned between the mold and the piston, the supporting ribs being sized to provide a gap for sand and aggregates in the received concrete.

4 . The apparatus for automatically extruding and forming a finished concrete channel according to claim 1 , further comprising at least one adjustable support connected on each side of the frame, each of the adjustable supports being independently actuated to raise or lower a height of the frame with respect to ground surrounding the ditch.

5 . The apparatus for automatically extruding and forming a finished concrete channel according to claim 4 , wherein each of the at least one adjustable supports includes the wheel and a spring attached to the rotatable wheel in which a degree of compression of the spring determines a height of an individual adjustable support.

6 . The apparatus for automatically extruding and forming a finished concrete channel according to claim 5 , wherein the wheel includes a projection that is received in one of the support rails of the frame.

Assignments (2)

Continuity (1)

References Cited (23)