| 摘要 |
A dispensing mechanism comprises a storage volume characterised by a bladder (30) having an exit orifice (36). A bung (40) having projections (41) is driven by the drive device (42) along the member (44) in one direction in the manner of a ratchet type mechanism as the drive device (42) is oscillated by the lever (50). The member (44) has serrations (46) which engage teeth (49) at one end of lever (50). The lever (50) is pivoted at (52) providing a reduction drive arrangement. A paste, liquid or similar flowable material is contained in the bladder (30) or alternatively within the volume enclosed by the barrel sections (22, 24). In the figure the exit orifice (36) is connected to a brush head having a nipple valve assembly (14) through which the substance is exuded as bung (40) compresses the bladder (30). The dispensing mechanism can be used with other arrangements such as to dispense medicines, paints or the like. The brush head (12) may be a tooth-brush floor brush, shoe brush or similar. Where medicine is dispensed the nipple valve arrangement (14) may comprise a single nipple. When the material being dispensed is not contained in a bladder (30) a seal strip may be employed to contain a material within the volume defined by the sections (22, 24) with the bung (40) having a hollow cavity into which the seal strip is wound as it advances.
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