Increasing taper plug cutter
OwnerLloyd Sevack, Thomas S. Gardinerinventors
Life of this patent
Estimating the term…
Abstract
A woodworking tool for cutting plugs having a shank, a generally cylindrical body, and a plurality of blades defining an internal longitudinal bore having a rounded portion, a constant diameter portion and a flared portion with an increasing angle of curvature.
Claims15
A plug cutter comprising a shank connected to a body and a plurality of blades depending from the body that define a bore having, progressing away from the body, a flared portion with an increasing angle of curvature that terminates at tips that define a mouth that is wider than any other portion of the bore.
A plug cutter comprising:
- (a) a shank;
- (b) a body having a shoulder;
- and
- (c) a plurality of helical blades having tips containing scraping edges that define a longitudinal bore within the body, the bore having, progressing from the body, a flared portion with an increasing angle of flare.
A plug cutter comprising a shank connected to a body and a plurality of blades depending from the body that define a bore having a constant diameter portion progressing away from the body and leading to a flared portion with an increasing angle of curvature that terminates at tips that define a mouth that is wider than any other portion of the bore, wherein the flared portion flares at approximately 3.degree. proximate the constant diameter portion and at approximately 5.degree. proximate the tips.
A plug cutter comprising:
- (a) a shank;
- (b) a body having a shoulder;
- and
- (c) a plurality of helical blades having tips containing scraping edges that define a longitudinal bore within the body, the bore having a constant diameter portion progressing from the body and leading to a flared portion with an increasing angle of flare that flares at approximately 3.degree. proximate the constant diameter portion and at approximately 5.degree. proximate the tips.
A plug cutter for cutting a plug comprising a shank connected to a body and a plurality of blades depending from the body that define a bore, having a top section for forming an eased edge upon the plug, the bore progressing away from the body and leading to a flared portion having an increasing angle of curvature that terminates at tips that define a mouth that is wider than any other portion of the bore, which is accessible through a hole piercing the body.
Dependencies are inferred from the claim text.