Hammer for shredding machines

US9855560B2 · kind B2 · utility

Assignee

• ESCO GROUP LLC · US

Inventors

• David M. Graf · Scappoose, US
• Michael R. Weeks · Portland, US
• John P. Hoice · Vancouver, US
• Daniel R. Morrow · Portland, US
• Terry L. Briscoe · Portland, US
• Christopher M. Carpenter · Tualatin, US

Key dates

• Filing date: May 17, 2013
• Grant date: Jan 2, 2018
• Expiry date: Sep 9, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C2013/2808
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

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.