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

Claim 8:
9. The method of claim 1, wherein said blade further comprises:
a side wall portion which projects forwardly from one of said first or second side edges, said side wall portion having an inboard face portion adjoining and angling inwardly toward said front face of said blade; and
means for joining said side wall portion to said one of said first or second side edges;
wherein said side wall portion has a side wall height defined as a maximum extent of said inboard face of said side wall portion when measured in a direction substantially normal to said blade width direction when viewed in a cross sectional plane oriented substantially normal to said blade height direction,
wherein an outward bend angle is defined as the minimum angle formed between said inboard face portion and said front face of said blade when said blade is viewed in any cross sectional plane substantially normal to said blade height direction,
wherein said side wall height is about 100 mm or less,
wherein said outward bend is in the range from about 90 to about 180 degrees, and
wherein said means for joining is selected from the group consisting of: integrally molding, integrally machining, roll forming, stamping, screwing, pinning, adhesive bonding, fusion bonding, interlocking, and any combination of these joining means.