Power operated rotary knife

Patent metadata

Field	Value
Publication number	US-9211650-B2
Application number	US-201414291852-A
Country	US
Kind code	B2
Filing date	May 30, 2014
Priority date	Jul 25, 2011
Publication date	Dec 15, 2015
Grant date	Dec 15, 2015

Abstract

A rolling bearing strip for a power operated rotary knife providing bearing support for rotation of a rotary knife blade with respect to a blade housing. The rolling bearing strip includes: a plurality of rolling bearings disposed in spaced apart relation; and a flexible separator cage for positioning the plurality of spaced apart rolling bearings, the flexible separator cage including interlocking first and second ends, the first end of the separator cage including a wall defining a projecting member and the second end of the separator cage including a wall defining a receiving member, the first end projecting member and the second end receiving member being in opposed facing relationship and the first end projecting member extending into the second end receiving member to secure the first end to the second end and form an annular, continuous rolling bearing ring.

First claim

What is claimed is:

1. A rolling bearing strip for a power operated rotary knife providing bearing support for rotation of a rotary knife blade with respect to a blade housing, the rolling bearing strip comprising:
a plurality of rolling bearings disposed in spaced apart relation; and
a flexible separator cage for positioning the plurality of rolling bearings, the flexible separator cage including first and second ends, the first end of the separator cage including a projecting member and the second end of the separator cage including a receiving member, the first end projecting member and the second end receiving member being in opposed facing relationship and the first end projecting member extending into the second end receiving member, the first and second ends secured to form a continuous ring.

2. The rolling bearing strip of claim 1 wherein the first end projecting member interfits into the second end receiving member to secure the first and second ends.

3. The rolling bearing strip of claim 1 wherein the first end includes a wall defining the projecting member and the second end includes a wall defining the receiving member.

4. The rolling bearing strip of claim 3 wherein the projecting member comprises a projecting tab extending transversely from the wall of the first end and the second end receiving member comprises a slot extending radially into the wall of the second end.

5. The rolling bearing strip of claim 3 wherein respective facing, overlapping portions of the wall of the first end and the wall of the second end are substantially planar.

6. The rolling bearing strip of claim 4 wherein the first end projecting tab extends substantially orthogonally from a planar portion of the first end wall and the second end slot extends substantially orthogonally into a planar portion of the second end wall.

7. The rolling bearing strip of claim 4 wherein the first end projecting tab is substantially oval-shaped in axial cross section and extends along a center line of the rolling bearing strip and the second end slot is substantially oval-shaped in axial cross section and extends along the center line of the rolling bearing strip.

8. The rolling bearing strip of claim 4 wherein an axial extent of the first end wall projecting tab is smaller than an axial extent of the second end wall slot.

9. The rolling bearing strip of claim 4 wherein a radial extent of the first end wall projecting tab away from the first end wall is substantially equal to a radial extent of the second end wall slot.

10. The rolling bearing strip of claim 1 wherein the first end of the separator cage includes a bead extending from the first end in a direction away from the projecting member, the bead extending circumferentially along a center line of the rolling bearing strip.

11. The rolling bearing strip of claim 10 wherein the first end bead is substantially arcuate-shaped in radial cross section.

12. The rolling bearing strip of claim 10 wherein a radial outer surface of the first end bead defines a diameter with respect to the center line of the rolling bearing strip that is less than an outer diameter of each of the rolling bearings of the plurality of rolling bearings with respect to the center line of the rolling bearing strip.

13. The rolling bearing strip of claim 4 wherein the second end includes a bead extending from the second end wall to define a portion of the second end slot, the bead extending circumferentially along a center line of the rolling bearing strip.

14. The rolling bearing strip of claim 13 wherein the second end bead is substantially arcuate-shaped in radial cross section.

15. A rolling bearing strip for a power operated rotary knife providing bearing support for rotation of a rotary knife blade with respect to a blade housing of the power operated rotary knife, the rolling bearing strip comprising:
a plurality of rolling bearings disposed in spaced apart relation; and
a flexible separator cage for positioning the plurality of rolling bearings, the flexible separator cage including first and second end portions, the first end portion of the separator cage including a projection extending transversely from the wall and the second end portion of the separator cage including a receiving member, the first end portion projection extending into the second end portion receiving member, the first and second ends secured to form a continuous ring.

16. The rolling bearing strip of claim 15 wherein the first end projection interfits into the second end receiving member to secure the first and second ends.

17. The rolling bearing strip of claim 15 wherein the first end includes a wall defining the projection and the second end includes a wall defining the receiving member.

18. The rolling bearing strip of claim 17 wherein the projection comprises a projecting tab extending transversely from the wall of the first end and the second end receiving member comprises a slot extending radially into the wall of the second end.

19. The rolling bearing strip of claim 18 wherein the first end projection tab extends substantially orthogonally from a planar portion of the first end wall and the second end slot extends substantially orthogonally into a planar portion of the second end wall.

20. The rolling bearing strip of claim 18 wherein the first end projecting tab is substantially oval-shaped in axial cross section and extends along a center line of the rolling bearing strip and the second end slot is substantially oval-shaped in axial cross section and extends along the center line of the rolling bearing strip.

Assignees

• Bettcher Industries

Inventors

• Mascari Nicholas A
• Whited Jeffrey A

Classifications

• F16C33/422

  made from sheet metal · CPC title

• F16C33/3825

  formed as a flexible belt, e.g. spacers connected by a thin film · CPC title

• F16C33/543

  from a single part · CPC title

• F16C2226/76

  with tongue and groove or key and slot · CPC title

• F16C33/425

  from a single part, e.g. ribbon cages with one corrugated annular part · CPC title