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US 2013/0233144 A1Published application
Knife assembly for a trimming machine
OwnerWoodrow A. Powers, IIinventor
Life of this patent
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Abstract
A knife assembly for attachment to an industrial paper trimming or cutting machine having a primary blade and a backbone blade where the cutting edge of the backbone blade is offset at an angle α from the cutting edge of the primary blade. The knife assembly is removably attached to a cutting machine configured to move in a reciprocating motion to trim edges from soft bound single paper products.
Claims4
A knife assembly for a trimming or cutting machine comprising,
- a. a primary blade having a primary beveled side of length L, a height H, where L is at least two times greater than H, a primary beveled edge of height BEH, and a primary cutting edge;
- and
- b. a backbone blade that
- i. extends below the primary cutting edge of the primary blade a distance less than H;
- ii. has a backbone beveled side of width W that is less than L;
- iii. has a backbone beveled edge of width BBW that is equal to BEH;
- and
- iv. has a backbone cutting edge positioned in the same plane as the primary cutting edge and is offset from the primary cutting edge by an angle greater than 90 degrees.
5 more elements
Dependencies are inferred from the claim text.