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. 18, 1986
Filed:
Jan. 06, 1984
Daryl R Konzal, Colgate, WI (US);
Paper Machinery Corporation, Milwaukee, WI (US);
Abstract
A bottom expander for a flat bottom paper container of noncircular cross-section comprises a ring having an aperture surface for closely embracing the bottom rim of a container and plate-like tool elements, each having a radially outer edge surface which opposes and clampingly cooperates with that aperture surface. Each tool element is fastened to the front end of a leaf spring, the rear end of which is anchored in fixed relation to a support for the ring. The leaf springs support the tool elements in coplanar relation and so flex as to confine the tool elements to translatory motion that carries their outer edge surfaces toward and from the aperture surface, thus eliminating sliding guidance for the tool elements. The leaf springs also bias the tool elements to home positions in which they are spaced from the aperture surface.