The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Nov. 23, 1999

Filed:

Sep. 26, 1997
Applicant:
Inventors:

Dale A Messner, Uniontown, OH (US);

Patrick A Dayton, Munroe Falls, OH (US);

Assignee:

Picker International, Inc., Cleveland, OH (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01C / ;
U.S. Cl.
CPC ...
73-179 ;
Abstract

A tool calibrator includes two portions shaped to slidably engage and secure a tool in a desired position. The tool is secured by a series of staggered V shaped grooves on each of the two portions having a known geometrical relationship with a diameter of a tool head of the tool. The tool calibrator further includes at least one position signaling device for communicating a location of the tool calibrator in an operating room or other area. A position and direction of a tip of the tool is determined by comparing a location of the tool secured within the tool calibrator to the location of each of the two portions. Further, based on the location of each of the two portions, the diameter of the tool head is calculated.

Published as:
EP0904735A2; JPH11188045A; EP0904735A3; US5987960A; JP4201891B2;

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