| 摘要 |
<p>The invention relates to multi-use-thin-walled tubular devices (10) having a longitudinal slit (20) with non-cutting overlapping edges (22, 24) and corners (31) curved in a manner to provide scissor-like entry-ways at either open end (14 or 16) and methods of making and using such devices. The device is rigid lengthwise yet flexible in circumference and has renitent qualities such that the overlapping edges (22, 24) are spring-like. All surfaces and edges are smooth so that the devices are user-friendly and comfortable when used as handle grips for holding and carrying built-in handles. The preferred method of making is injection molding and requires a specially-designed mold form. It has been discovered that selection of appropriate material and careful control of the molding parameters produces spring-like tubular devices which develop the desired degree of overlap of the longitudinal edges during the post-mold shrinkage period.</p> |
