Serrated doctor blades
OwnerGordon Eugene Carrierinventor
Life of this patent
Estimating the term…
Abstract
A doctor blade is provided that is suitable for use in the manufacture of paper, particularly for use in calenders. The doctor blade includes a plurality of serrations in the leading edge.
Claims40
A doctor blade comprising a body having an elongated edge configured for application against a circumferential surface of a roll rotating upon a rotational axis, the edge defining a plurality of serrations.
A doctor blade comprising a body having an elongated edge configured for application against a circumferential surface of a roll rotating upon a rotational axis, the edge defining a plurality of serrations and a plurality of relief cuts each extending from a bottom surface of at least some of the serrations into the width of the doctor blade.
A doctor blade comprising a body having an elongated edge configured for application against a circumferential surface of a roll rotating upon a rotational axis, the doctor blade comprising a composite material including a plurality of fibrous layers impregnated with a resin and the edge defining a plurality of serrations.
A method of cleaning a circumferential surface of a roll rotating upon a rotational axis comprising the steps of:
- a) positioning a doctor blade comprising a body having an elongated, serrated edge near the roll surface;
- b) pressing the serrated edge of the doctor blade against the roll surface;
- and
- c) simultaneously with the pressing step, oscillating the doctor blade a direction substantially parallel with the rotational axis of the roll.
A method of removing process contaminants from a circumferential surface of a rotating papermaking roll comprising the steps of:
- a) positioning a doctor blade comprising a body having an elongated, serrated edge near the roll surface during a papermaking process;
- and
- b) pressing the serrated edge of the doctor blade against the roll surface.
Dependencies are inferred from the claim text.