Esco Corp.

Esco Group LLC

Esco Corporatio

Daniel R Morrow

Terry Lee Briscoe

David M Graf

Michael R Weeks

John P Hoice

Christopher M Carpenter

Lonny V Morgan

Discharge grates and grate components of reducing equipment have reduced amounts of material to provide lower costs, lower weight, and less scrap while still providing adequate resistance to bending, deflection, and/or warping and suitable material discharge.

Discharge grates for reduction mills

Shredder hammers having first and second major surfaces on opposing sides, and a circumferential edge. A mounting portion includes a mounting hole that extends from the first major surface to the second major surface, and is configured to receive a hammer mounting pin for mounting in a reducing system. The circumferential edge includes a primary impact face to initially impact materials to be reduced and a wear edge to subsequently crush and shear the material against a wall of the equipment. The hammer is biased forward on the pin to admit more material to be crushed between the wear edge and the grates.

Hammer for shredding machines

Shredder hammers include a hammer pin opening in which at least some portion of the interior surface is curved in a direction moving from one major surface of the shredder hammer to the other. This interior surface may be smoothly formed as an arc of a circle, as a parabola, as a hyperbola, or as another curved surface, with the local extrema within the interior of the hole (e.g., at or near the center). Providing the curved interior surface helps vary and disperse the locations where force is absorbed due to contact between the hammer pin and the walls defining the hammer pin opening when the shredding hammer blade contacts the material to be shredded. Other structures include engagement between the hammer pin and the hammer as part of a bushing member, a spool or sleeve member, or a ball swivel member.

Shredder hammers including improved engagement between the hammer pin and the hammer

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Portland, OR, United States of America

Daniel R Morrow