| 摘要 |
<p>A pendant assembly is disclosed for suspending from a hospital room ceiling to provide various services used in a hospital operating room. The pendant has a distribution head 20 with outlets 22, 24, 26 for such services, including, for example, electrical, gas and vacuum outlets and which is moveable upwardly and downwardly through a motive means operated by personnel using the pendant. An automatic stop mechanism is included and which comprises one or more sets of electrical contacs 58, 60 interposed between upper and lower housings 34, 28 in the distribution head 20. The lower housing 28 is suspended from the upper housing 34 at a predetermined distance therefrom and is moveable over that predetermined distance with respect to the upper housing 34. When the distribution head 20 is lowered such that is encounters an obstruction, the lower housing 28 is forced upwardly and the contacts 58, 60 between the housings contact each other to complete an electrical circuit 62. That circuit 62 immediately disables the motive means to prevent that motive means from further lowering the distribution head 20 so that damage to the distribution head and the obstruction is minimized. Also, a visual indicator 70 may be included to alert the personnel that the obstruction has been encountered.</p> |
