| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for annunciating that a dripping liquid is a little left. SOLUTION: A part having a well balanced length of an operating arm 1 is fixed freely rotatably on a support 6, a presser leaf spring 2 is mounted at a suitable position of the arm 1 along the longitudinal direction from the point of support of the arm 1, at least one of a hanging part 5 is fixed at a suitable position on the longitudinal direction of the arm 1 and also a switching member 4 to make and break contact is mounted at a part turning round the support point of the arm 1 as the center. When the whole weight of a dripping container 10 hung at the hanging part 5 reached a giving weight, the arm 1 turns by resilient force of the leaf spring 2, it results to operate the switching member 4 to make and break interlocked thereto. A circuit composed of the switching member 4 and a dry cell 8 is contained in a casing 6a having a hanger 11, when the dripping liquid is consumed, the switching part 4 is actuated to make an annunciation means 9 or on-line circuit to a nurse room 'ON'. |
