Dispensing apparatus for dispensing fluid with helical abutment to control adjustment of stroke

摘要

A dispensing apparatus for a liquid which relies on moulded components capable of being interchanged to provide, in addition to incremental adjustment within a range of dosages allowed by stroke limiting rotational adjustment of the relativity of escarpment and abutment members, the change of one or both the spread of the dosage range and at least one limit of the range.