Method for manufacturing disposable rotary cutting tools and disposable rotary tool for dental or medical applications

Patent metadata

Field	Value
Publication number	US-9770247-B2
Application number	US-41872809-A
Country	US
Kind code	B2
Filing date	Apr 6, 2009
Priority date	Jun 21, 2004
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

The shank ( 12 ) of a disposable rotary cutting tool ( 10 ) comprises a pipe section ( 16 ) cut from a drawn metal pipe. The tool head ( 14 ) is formed from a cut-out ( 18 a, 18 b ) of a drawn metal sheet or a section of a metal tube by non-cutting machining. The pipe section ( 16 ) and the tool head ( 14 ) are advantageously attached by force fitting.

First claim

The invention claimed is:

1. A disposable rotary cutting tool for dental applications comprising:
a tubular tool shank comprising a drawn metal pipe section having a uniform diameter over its entire length;
a tool head comprising a drawn metal tube section having a uniform diameter over its entire length, wherein the tool head has a first open end and a second open end, the first open end of the tool head has a crown of saw teeth forming a circumferential cutting surface, the crown of saw teeth having the same diameter as the rest of the tool head; wherein the second open end of the tool head, opposite the first open end, comprises a bushing, wherein the tool shank is inserted into the bushing, wherein the tool head is force fit connected to the tool shank; and
a fastening connector that is connected to the tubular tool shank.

2. Cutting tool according to claim 1 , wherein the tool head is manufactured by non-cutting machining.

3. Cutting tool according to claim 2 , wherein the fastening connector is formed by deformation of the metal pipe section, in an end region away from the tool head.

4. Cutting tool according to claim 1 , wherein the metal tube section includes a cut-out or stamped radial monitoring window.

Assignees

• Courvoisier Stephane
• Straumann Holding Ag

Inventors

• Courvoisier Stephane

Classifications

• Y10T408/909

  Having peripherally spaced cutting edges · CPC title

• B23P15/28

  cutting tools (sawing tools B23D63/00, B23D65/00; files or rasps B23D73/00) · CPC title

• B23B51/04

  {Drills} for trepanning · CPC title

• B23B51/00

  Tools for drilling machines · CPC title

• B23C2210/03

  Cutting heads comprised of different material than the shank irrespective of whether the head is detachable from the shank · CPC title