Paper container bottom expander
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 18, 1986
Grant Date -
N/A
app pub date -
Jan 6, 1984
filing date -
Jan 6, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
First Claim
Other Claims data not available