Feed roll for power operated trimming tool

Patent metadata

Field	Value
Publication number	US-11533919-B2
Application number	US-202117378048-A
Country	US
Kind code	B2
Filing date	Jul 16, 2021
Priority date	Jul 21, 2020
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A power-driven feed roll for rotation about a feed roll axis of rotation in a hand-held, power operated trimming tool, the feed roll including a cylindrical core having an inner surface defining a through bore and an outer surface including a central cylindrical recess bounded by a base and first and second radially extending side walls at opposite ends of the base and first and second flanking portions on either side of the cylindrical recess. The feed roll further includes an annular drive member formed over the cylindrical recess and integral with the cylindrical core, the annular drive member extending along the first and second radially extending side walls of cylindrical recess and protruding radially outwardly, an outer surface of the annular drive member defining a worm gear for driving the feed roll about the axis of rotation. The first and second flanking portions including annular sets of drive teeth.

First claim

What is claimed is:

1. A power-driven feed roll for rotation about a feed roll axis of rotation in a power operated trimming tool, the power-driven feed roll comprising:
a cylindrical core including a first end and a spaced apart second end and an inner surface and a radially spaced apart outer surface, the inner surface defining a central through bore extending along the feed roll axis of rotation, the outer surface of the cylindrical core including a central portion centered between the first and second ends and including a recess bounded by a base and first and second radially extending side walls at opposite ends of the base, a first flanking portion extending between the first end and the central portion and a second flanking portion extending between the second end and central portion; and
a drive gear formed over the recess of the central portion and integral with the cylindrical core, the drive gear extending along the first and second radially extending side walls of cylindrical recess and protruding radially outwardly, the first flanking portion including a first plurality of annular sets of drive teeth, each of the first plurality of annular sets of drive teeth including a plurality of circumferentially spaced apart drive teeth, the second flanking portion including a second plurality of annular sets of drive teeth, each of the second plurality of annular sets of drive teeth including a plurality of circumferentially spaced apart drive teeth.

2. The power-driven feed roll of claim 1 wherein the drive gear is an annular drive gear comprising a worm gear.

3. The power-driven feed roll of claim 1 wherein each adjacent pair of the first plurality of annular sets of drive teeth of the first flanking portion are spaced apart by an annular gap and each adjacent pair of the second plurality of annular sets of drive teeth of the second flanking portion are spaced apart by an annular gap.

4. The power-driven feed roll of claim 1 wherein the drive gear protrudes radially outwardly with respect to an interior region of the first flanking portion adjacent the first radially extending wall and protrudes radially outwardly with respect to an interior region of the second flanking portion adjacent the second radially extending wall.

5. The power-driven feed roll of claim 1 wherein the drive gear is formed integrally with the cylindrical core by casting.

6. The power-driven feed roll of claim 1 wherein the drive gear includes a first section adjacent a first end of the drive gear and a second section adjacent a second end of the drive gear and a gap separating the first and second sections of the drive gear.

7. The power-driven feed roll of claim 1 wherein the recess of the central portion of the cylindrical core is an annular recess and includes a plurality of circumferentially spaced indentations protruding radially inwardly into the base of the recess and further wherein an inner surface of the drive gear includes a plurality circumferentially spaced protruding projections, each of the plurality of circumferentially spaced protruding projections being received in a respective one of the plurality of circumferentially spaced indentations protruding radially inwardly into the base of the recess.

8. A power operated trimming tool comprising:
an elongated handle assembly including a through bore extending along a longitudinal axis of the handle assembly;
a drive mechanism;
a head assembly affixed to the handle extension of the handle assembly, the head assembly including a frame body supporting a feed roll and a blade;
the feed roll driven about a feed roll axis of rotation by the drive mechanism, the feed roll including:
a cylindrical core including a first end and a spaced apart second end and an inner surface and a radially spaced apart outer surface, the inner surface defining a central through bore extending along the feed roll axis of rotation, the outer surface of the cylindrical core including a central portion centered between the first and second ends and including a recess bounded by a base and first and second radially extending side walls at opposite ends of the base, a first flanking portion extending between the first end and the central portion and a second flanking portion extending between the second end and central portion; and a drive gear formed over the recess of the central portion and integral with the cylindrical core, the drive gear extending along the first and second radially extending side walls of cylindrical recess and protruding radially outwardly, an outer surface of the drive gear driving the feed roll about the feed roll axis of rotation, the first flanking portion including a first plurality of annular sets of drive teeth, each of the first plurality of annular sets of drive teeth including a plurality of circumferentially spaced apart drive teeth, the second flanking portion including a second plurality of annular sets of drive teeth, each of the second plurality of annular sets of drive teeth including a plurality of circumferentially spaced apart drive teeth.

9. The power operated trimming tool of claim 8 wherein the drive gear of the feed roll is an annular drive gear comprising a worm gear.

10. The power operated trimming tool of claim 8 wherein each adjacent pair of the first plurality of annular sets of drive teeth of the first flanking portion of the feed roll are spaced apart by an annular gap and each adjacent pair of the second plurality of annular sets of drive teeth of the second flanking portion of the feed roll are spaced apart by an annular gap.

11. The power operated trimming tool of claim 8 wherein the drive gear of the feed roll protrudes radially outwardly with respect to an interior region of the first flanking portion adjacent the first radially extending wall and protrudes radially outwardly with respect to an interior region of the second flanking portion adjacent the second radially extending wall.

12. The power operated trimming tool of claim 8 wherein the drive gear of the feed roll is formed integrally with the cylindrical core by casting.

13. The power operated trimming tool of claim 8 wherein the drive gear of the feed roll includes a first section adjacent a first end of the drive gear and a second section adjacent a second end of the drive gear and an annular gap separating the first and second sections of the drive gear.

14. The power operated trimming tool of claim 8 wherein the recess of the central portion of the cylindrical core of the feed roll includes a plurality of circumferentially spaced indentations protruding radially inwardly into the base of the recess and further wherein an inner surface of the drive gear of the fee roll includes a plurality circumferentially spaced protruding projections, each of the plurality of circumferentially spaced protruding projections being received in a respective one of the plurality of circumferentially spaced indentations protruding radially inwardly into the base of the recess.

15. A feed roll driven for rotation about a feed roll axis of rotation in a power operated trimming tool, the feed roll comprising:
a cylindrical core including a first end and a spaced apart second end and an inner surface and a radially spaced apart outer surface, the inner surface defining a central through bore extending along the feed roll axis of rotation, the outer surface of the cylindrical core including a central portion centered between the first and second ends and including a recess bounded by a base and first and second radially extending side walls at opposite ends of the base, a first flanking portion extending between the

Assignees

• Bettcher Industries

Inventors

• Esarey Bernard J

Classifications

• A22B5/166

  Drum skinners · CPC title

• A22B5/168 Primary

  Hand tools specially adapted for skinning carcasses · CPC title

• A22C17/12 Primary

  Apparatus for cutting-off rind {(skinning instruments A22B5/16)} · CPC title