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.
Patent No.:
Date of Patent:
Nov. 14, 2000
Filed:
Jan. 20, 1999
David W Jahn, Cincinnati, OH (US);
Patrick A Jacomet, Troy, OH (US);
Martin Marietta Materials, Inc., Raleigh, NC (US);
Abstract
An apparatus for measuring dimensions of particles includes a base. At least three fixed posts are mounted to the base. A swinging arm is pivotally mounted to the base about a pivot point. The swinging arm has a first section mated with a first of the at least three fixed posts, a second arm mated with a second and a third of the at least three fixed posts, and a third section connecting the first and second sections. The first section has a first length and the second section has a second length. A first opening is formed when the first section and the first fixed post are not in contact. Second and third openings are formed when the second section does not contact the second and third fixed posts.