Yoshino Kogyosho Co., Ltd.

Shoji Tanabe

Yoshio Akiyama

Shigeru Tomiyama

Masashi Yoneyama

Shuichi Koshio

Hiroaki Tokuda

Takao Iizuka

Tomoyuki Ozawa

Hiromichi Saito

Shigeru Yoneyama

Naoki Tsutsui

A container has a body which comprises front end rear walls, and the side walls. Each of the front and rear walls has an elliptic cross section, and is provided with a lateral recess. Each of the side walls is a vertical plan which intersects the elliptic cross section of the front and rear walls, and is provided with a plurality of reinforcements. The container has a bottom which comprises a peripheral wall connected to the body and a bottom wall. The peripheral wall comprises slightly inclined front and rear walls, and side walls inclined by a predetermined angle. The peripheral wall is provided with a reinforcing rib.

Synthetic resin container with thin wall

The synthetic resin container according to the present invention has a waist dividing a container main body portion into upper and lower parts, wherein the waist is formed on an annular groove surrounding the main body portion to as to be convex toward the interior of the container. The annular groove has reinforcing ribs with a level higher than a groove bottom of the annular groove and lower than the surface of the main body portion. The container main body portion includes reinforcing lateral ribs each having a concave portion which is positioned at the same level as a surface of the container, which or forms a slight step relative to the surface of the container. The main body portion has a plurality of ridges converging toward the associated central convergent point, respectively, thereby defining multi-faceted concave walls inclined toward the associated convergent points, respectively.

Synthetic resin container having improved shape stability

A bottle-shaped synthetic resin container () includes a body portion (), and a circumferential groove () extending along an outer surface of the body portion (). The circumferential groove () is defined by a groove bottom wall () and groove side walls () extending from the groove bottom () to the outer surface of the body portion (). At least one of the groove side walls () extends substantially linearly, as seen in a longitudinal-sectional plane including a center axis (A) of the body portion (), and forms an angle (&#x3b1;, &#x3b2;) of not more than 20&#xb0; relative to a reference line (L) perpendicular to the center axis (A) of the body portion () in the longitudinal-sectional plane of the container ().

Bottle-shaped synthetic resin container

Growing community of inventors

Koto-ku, Japan

Shoji Tanabe