Patent ID: 11859357
Assignee: nan
Field: Other special machines (Mechanical engineering)
Classification: CPC E  A | IPC A  E

Claim 1:
2. The method of claim 1, wherein said blade further comprises a deflector flange disposed on said upper edge, said deflector flange having a front face portion,
wherein said front face portion is angled forwardly relative to said front face of said blade, and extends upwardly and forwardly therefrom, whereby an obtuse forward bend angle is formed, being the minimum included angle between said below adjoining front face and said front face portion of said deflector flange when viewed in any cross sectional plane taken substantially normal to said blade width direction,
wherein a deflector flange length is defined as a maximum surface length running upwardly and downwardly along said front face of said deflector flange portion in a cross sectional plane oriented substantially normal to said blade width direction,
wherein said deflector flange maximum length is in the range from about 12 to 50 mm, and
wherein said forward bend angle is in the range from about 120 to 150 degrees.