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:
Feb. 07, 1978
Filed:
Jun. 06, 1977
Applicant:
Inventors:
Gary M Curtis, Elgin, IL (US);
David P Wagner, Geneva, IL (US);
Assignee:
Illinois Tool Works Inc., Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16B / ;
U.S. Cl.
CPC ...
85 62 ;
Abstract
A multipiece, preassembled washer unit incorporating an upper washer and a lower conical washer with a ring gauge interposed between the outer marginal surfaces of the washers so that the gauge is clamped between the superimposed washers upon compression of the unit to a predetermined amount. The clamping of the gauge being indicative of a predetermined accurate tension level in the joint. The ring gauge including means to accurately size itself and thereby accommodate and/or minimize errors due to tolerances in cold headed clamping members.