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, 1989
Filed:
Oct. 05, 1988
Lonnie E Johnston, Bedford, OH (US);
Steven J Volcansek, Garfield Heights, OH (US);
Crawford Fitting Company, Solon, OH (US);
Abstract
A gauge for fittings of the type including a coupling nut having a threaded internal opening and adapted to encircle a cylindrical member and a ferrule positioned on the cylindrical member, the gauge being used for determining the pull up of the ferrule and the swaging of the cylindrical member, includes an indicating unit having a readout for showing whether the swaging of the cylindrical member is within tolerances. A piston is movably mounted on the indicating unit and is operatively connected to the readout. The piston includes a body having a bore and an external threaded area on the body circumferentially of the bore to threadedly engage the threaded internal opening of the coupling nut carried on the cylindrical member. The piston further includes a section within the bore for aligning the cylindrical member with the bore and for limiting the extent of movement of the cylindrical member into the bore. A master is provided for calibrating the gauge. The gauge is used in a method for determining the swaging that a cylindrical member has undergone.