Fiber chopper and method of chopping

Details Fiber chopper and method of chopping Fiber chopper and method of chopping

2007-01-30

2007-01-30

Ashley, Boyer D. (Department: 3724)

Cutting

Means to drive or to guide tool

Plural tools selectively engageable with single drive

C083S563000, C083S564000, C083S913000, C083S345000

Reexamination Certificate

active

10215243

ABSTRACT:
A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. The chopper has a backup roll, a blade roll and a biasing system for forcing the backup roll and the blade roll together at a desired force during set up and operation. The biasing system contains a mechanism such as a slip clutch or a limited torque stepping motor for maintaining a substantially constant biasing force at set up and during operation while allowing the rolls to separate slightly to pass a temporary thicker feed without recoil that currently shortens blade and backup roll working layer life.

REFERENCES:
patent: 3704765 (1972-12-01), Withrow et al.
patent: 3815461 (1974-06-01), Genson
patent: 4014227 (1977-03-01), Adams
patent: 4576621 (1986-03-01), Chappelear et al.
patent: 4637286 (1987-01-01), Boggs
patent: 5118082 (1992-06-01), Byun
patent: 5195415 (1993-03-01), Buck et al.
patent: 5970837 (1999-10-01), Arterburn et al.

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