Reinforcing structure for sidewall around bottle lip

Abstract

A reinforcing structure for a sidewall around a bottle lip is disclosed. The sidewall is a shoulder in an upper part of a bottle body that has the bottle lip atop the shoulder. The reinforcing structure is such formed that the shoulder is a chamfered rectangular structure in a direction parallel to a width of the bottle body, and four vertical lateral faces support the bottle lip from blow. A slope is formed at a corner between any two adjacent lateral faces and has a downward-narrowed facade. All of the lateral faces and the slopes are plane and flat in geometry. Each of the lateral faces has a downward-widened facade defined by the slopes flanking it from two sides, while each of the lateral faces has an upper edge thereof locationally close to the base of the bottle lip. The reinforcing structure structurally strengthens the shoulder.

What is claimed is: 
     
         1 . A reinforcing structure for a sidewall around a bottle lip, the sidewall being a shoulder located in an upper part of a bottle body, the bottle body having the bottle lip atop the shoulder, the reinforcing structure being such formed that the shoulder is roughly a chamfered rectangular structure in a direction parallel to a width of the bottle body, and there are four vertical lateral faces supporting the bottle lip from below, wherein a slope is formed at a corner between any two adjacent said lateral faces and has a downward-narrowed facade, in which all of the lateral faces and the slopes are plane and flat in geometry, and each of the lateral faces has a downward-widened facade defined by the slopes flanking it from two sides, while each of the lateral faces has an upper edge thereof locationally close to the base of the bottle lip. 
     
     
         2 . The sidewall reinforcing structure of  claim 1 , wherein each said lateral face is angularly jointed to the slopes at the two sides thereof by round corners. 
     
     
         3 . The sidewall reinforcing structure of  claim 1 , wherein the bottle body has a part below the shoulder formed as a chamfered rectangular structure conforming to the shoulder.