| 摘要 |
<p>A B R I D G E M E N T. The invention relates to a parturition warning device for an animal and comprises a first member, intended for stable location beneath the tail but above the anus of the animal, a second member pivotally attached to the first member, and resilient means for urging the second member against the vulva of the animal, the second member being located to completely cover the vulva of the animal and arranged to actuate an electrical switch, when displaced away from the vulva indicative of a positive issue from the vulva in the early stages of the birth, to activate an alarm system.</p> |
