| 摘要 |
<p>To reduce the force necessary to anchor the double "T" bar attachments, the filament (28) of each attachment is made longer than the shortest (perpendicular) distance between the "T" bars (24:26) to avoid the necessity of stretching the filament (28) beyond its original length as it is dispensed. The filament (28) lies in the same plane as the "T" bars to permit it to be fabricated on conventional stretching equipment. Preferably, each end of the filament is formed at an acute angle relative to a line (33) perpendicular to the "T" bar to which it is attached. The attachments can be supplied in continuously connected ladder stock form (Fig. 12) or in a clip of parallel spaced attachments (Fig. 1), situated between connector bars. In clip form, the attachments are fed along a correspondingly shaped channel (18) through the housing (10:12). In order to reduce the peak force necessary to sever the "T" bars from the respective connector bars, blades (60:62) are located within the housing such that they cut at different times during the trigger stroke (Fig. 4). <IMAGE></p> |
