Patent ID: 7819285
Filing Date: 2010-10-26
Classification: A61M,G06M

Abstract:
1. A counter mechanism of a feeding device for feeding to the outside, in each discrete feeding operation, an amount corresponding to single delivery unit of stored material which has been stored in a storage chamber, the counter mechanism comprising: a fixed member which is fixed to a device body and having a first contact portion formed at a predetermined position in circumferential direction thereof; a gear having a count number display that can be monitored from the outside; a rotating member being restricted to rotate either to a position in a rotating direction to allow feeding of a single delivery unit and a position to preventing feeding of the stored material; a ring member which can rotates in interlock with a rotating motion of said rotating member and comprises a second contact portion formed at a predetermined position in circumferential direction thereof; one of the first and second contact portions comprising a resiliently deformable cam follower having a jaw and the other being a cam being engagable with the cam follower, and the gear being controlled to rotate in such a manner that, during the rotating member rotate for a single delivery unit, due to a mutual operation of the cam and cam follower, the jaw is engaged with the gear to rotate the gear only by a single gage in the count number display.