Progressive concave

Details Progressive concave Progressive concave

A - Human Necessities

01

F

A01F 12/26 (2006.01) A01D 41/12 (2006.01) A01F 12/44 (2006.01)

Patent

CA 2599263

A concave which has axially extending members and circumferentially extending members. Each of these members has a flat interior surface presented toward the rotor. The flat surfaces of the axially extending members are in the same circular surface as the circumferentially extending members. This presents a smooth grid surface which faces the rotor. The axially extending members have a progressively larger spacing for the first portion of their section. Beginning with the greatest spacing toward the direction material enters the concave and an increasingly smaller spacing away from the opening until they reach a uniform spacing for the remainder of the concave unit.

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