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:
Oct. 07, 1997
Filed:
Nov. 29, 1995
Applicant:
Inventors:
Bruce S Howard, Mercer Island, WA (US);
James C Van Avery, Fall City, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
B21J / ;
U.S. Cl.
CPC ...
227119 ; 227-4 ; 227 51 ; 227156 ; 227 61 ; 173 21 ; 2924353 ; 2952506 ; 358101 ; 324242 ;
Abstract
A real-time fastener measurement system includes an anvil (10) having a striking surface (16) that engages a fastener as it is upset. Three proximity sensors (20) are disposed at 120.degree. intervals around a striking surface of the anvil. A computer system (110) reads the electronic signals produced by the proximity sensors just after the fastener has been upset and converts the signals to digital values. The computer stores a piecewise linear function that has been predetermined for each sensor and uses the function to convert the digital values of the proximity sensor to fastener head height.