초록 ▼

A chamber is provided that is flexible and able to be contoured along the entire length of the chamber when deployed on rock and earth formations with variable gradings. The chamber has a multiplicity of stress relief notches (also known as flex ports) formed on both sides at the base of the chamber

A chamber is provided that is flexible and able to be contoured along the entire length of the chamber when deployed on rock and earth formations with variable gradings. The chamber has a multiplicity of stress relief notches (also known as flex ports) formed on both sides at the base of the chamber Substantially along the entire length of the chamber. Each stress relief notch is formed between a respective pair of protruding ribs along substantially the entire length of the chamber so the chamber can flex in an accordion-like or caterpillar-like manner. The chamber may be molded to include the strain relief notches.

대표청구항 ▼

[ What is claimed is:] [1.]1. A chamber comprising:an arched-housing having a base and having a multiplicity of protruding transverse circumferential strengthening ribs extending substantially along the entire length of the arched-housing; anda corresponding multiplicity of stress relief notches dis

[ What is claimed is:] [1.]1. A chamber comprising:an arched-housing having a base and having a multiplicity of protruding transverse circumferential strengthening ribs extending substantially along the entire length of the arched-housing; anda corresponding multiplicity of stress relief notches disposed on the base substantially along the entire length of the arched-housing, each stress relief notch being arranged between a respective pair of the protruding transverse circumferential strengthening ribs so the chamber can flex along its length and width in an accordion-like or caterpillar-like manner for contouring the chamber when deployed on rock and earth formations with variable gradings.