Dowell rod inserter
First Claim
Patent Images
1. A dowel rod insertion device comprising:
- a frame adapted to hold a dowel rod and adapted to be coupled to a concrete extrusion machine;
a plunger assembly slidingly coupled to the frame;
an air cylinder assembly coupled to the frame comprising;
a collar having a plurality of apertures; and
an air cylinder having a piston wherein the piston extends through one of the collar apertures and couples to the sliding plunger assembly; and
a pneumatic plumbing assembly coupled to the air cylinder assembly comprising;
a compressed air source;
an actuator switch; and
hoses operationally coupling the compressed air source to the actuator switch and the actuator switch to the air cylinders;
wherein actuation of the air cylinders causes the pistons to pull the plunger into the rod, thereby pushing the rod into the extruded concrete.
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Accused Products
Abstract
A device for inserting rods into plastic forms comprising a frame, a plunger assembly coupled to the frame, an air cylinder assembly also coupled to the frame and to the plunger assembly, and a pneumatic plumbing assembly connected to the air cylinder assembly. The frame can be attached to a slipform paving or curbing machine. When actuated, the air cylinder assembly pulls the plunger along the frame. The plunger pushes a dowel rod resting in the frame along the frame and into a concrete member being extruded from the machine.
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Citations
10 Claims
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1. A dowel rod insertion device comprising:
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a frame adapted to hold a dowel rod and adapted to be coupled to a concrete extrusion machine; a plunger assembly slidingly coupled to the frame; an air cylinder assembly coupled to the frame comprising; a collar having a plurality of apertures; and an air cylinder having a piston wherein the piston extends through one of the collar apertures and couples to the sliding plunger assembly; and a pneumatic plumbing assembly coupled to the air cylinder assembly comprising; a compressed air source; an actuator switch; and hoses operationally coupling the compressed air source to the actuator switch and the actuator switch to the air cylinders; wherein actuation of the air cylinders causes the pistons to pull the plunger into the rod, thereby pushing the rod into the extruded concrete. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A rod inserter comprising, in combination:
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a frame; a plunger assembly coupled to the frame; an air cylinder assembly operationally coupled to the frame and the plunger assembly; and a pneumatic plumbing assembly connected to the air cylinder assembly; wherein the frame has a foot end adapted to be connected to a concrete pouring machine and an oppositely disposed free end; and wherein the air cylinder assembly comprises a plurality of pneumatic cylinders symmetrically disposed about the frame, having pistons extending towards the free end of the frame and connected to the plunger assembly.
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10. A rod insertion device comprising:
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a frame having; a V-shaped member; a foot; and fasteners adapted to couple the device to a paver; a sliding plunger assembly operationally connected to the frame and adapted to slide in the V-shaped member, having; a plunger having a head and an elongated cylindrical body; a sled coupled to the plunger; an air cylinder assembly coupled to the frame, having; a collar having apertures; a plurality of air cylinders having pistons wherein the pistons extend through respective apertures and couple to the sled; and a pneumatic plumbing assembly coupled to the air cylinder assembly, having; a compressed air source; an actuator switch; and hoses operationally coupling the actuator switch to the compressed air source and the air cylinders.
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Specification