Patent ID: 7380744

Claim:
A membrane dispenser comprising: A basic body being a long cylindrical body having its intermediate outer circumference provided with a position-limiting recess, said position-limiting recess partitioning said basic body into a holding member at a rear portion and a dispensing member with a comparatively large diameter at a front portion, said dispensing member having its lower circumference contracted toward said position-limiting recess and formed with a neck with a diameter somewhat the same as that of said holding member; A position-limiting member shaped as a ring to be fitted and positioned in said position-limiting recess of said basic body, an inner diameter of said position-limiting member being a little larger than a circumference of said position-limiting recess to enable said basic body to rotate pivotally on said position-limiting member; and A brake sleeve being a hollow tubular body made of flexible material, said brake sleeve having its lower end sealed and its upper end formed with an opening, said brake sleeve formed with an accommodating cavity with a diameter a little larger than a diameter of said holding member of said basic body, said accommodating cavity having its lower inner circumferential edge provided with a shoulder protruding toward a shaft center and having a comparatively small diameter, said accommodating cavity being deep enough for receiving therein both said holding member and said position-limiting recess of said basic body, said holding member of said basic body having its lower end exactly fitted in said shoulder of said accommodating cavity, said brake sleeve engaged with said position-limiting member, said accommodating cavity having an inner circumferential edge of its opening end secured with a position-limiting edge, said accommodating cavity further having its inner circumference fixed with a plurality of brake bars at a preset location under said position-limiting edge.