Patent ID: 11891758
Assignee: VALMET TECHNOLOGIES OY
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D | IPC D

Claim 4:
5. The blade element pair of claim 1 wherein the first blade bars and first blade grooves define a first pitch comprising one of said first blade bars and one of said first blade grooves, wherein the first pitch is repeated to form the first refining surface and each first pitch is at most 3 mm wide in a direction transverse to the said one of said first blade bars and one of said first blade grooves; and
wherein the second blade bars and second blade grooves define a second pitch comprised of one of said second blade bars and one of said second blade grooves, wherein the second pitch is repeated to form the second refining surface and each second pitch is at most 3 mm wide in a direction transverse to the said one of said second blade bars and said one of said second grooves.