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:
Jun. 20, 1978
Filed:
May. 09, 1977
C Robert Gasparrini, Rye, NY (US);
Baldwin-Gegenheimer Corporation, Stamford, CT (US);
Abstract
The invention relates to a method of joining at least two layers of material one of which is made of weldable material. At least one of the layers of material has an opening therein for receiving a ball of weldable material so that the ball rests in contact with the layer of weldable material. The diameter of the hole is in the range of 94% to 96% the diameter of the ball. The diameter of the ball is in the range of 2T to 5T where T is the thickness of the layer of material having the opening therein. Heat and pressure are applied in sufficient amounts and for a sufficient time to weld the ball to the layer of weldable material. The ball is deformed so that it overlaps the other layer in part so as to attach the two layers.