Actuatable dosing mechanism
AssigneeIng. Erich Pfeiffer GmbH
InventorsPeter Pfeiffer, Leo Maerte
Life of this patent
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Abstract
A dosing mechanism in the form of a manually operable, single-acting piston pump, which dispenses a given quantity of a substance, e.g. in atomized form, during each actuating stroke has a counter. For this purpose, a counting ring mounted in rotary manner on a base part is provided, which is advanced by one step per actuating stroke by an indexing device with cooperating and correspondingly bevelled ribs, so that in each case a different character in the counting ring appears at a window in the actuating pusher casing. Two projections cooperating with one another in a given position of the counting ring form a locking device against further actuation of the atomizing pump, when a given number of strokes have been performed.
Claims18
An actuatable dosing mechanism with an actuating pusher for dispensing a quantity of a flowable substance from a container during each actuating stroke of the actuating pusher, the dosing mechanism comprising:
- a counter for automatically counting the actuating strokes;
- and,
- a locking device between the counter and the actuating pusher for disabling the actuating pusher to prevent further dispensing of the substance after a predetermined number of actuating strokes.
An actuatable dosing mechanism with an actuating pusher for dispensing a quantity of a flowable substance from a container during each actuating stroke of the actuating pusher, comprising:
- a rotary counting ring for automatically counting the actuating strokes;
- and, an additional ring which can be coupled to the counting ring by axial displacement of the additional ring.
An actuatable dosing mechanism with an actuating pusher for dispensing a quantity of a flowable substance from a container during each actuating stroke of the actuating pusher comprising:
- a base part, the actuating member being axially movable relative to the base part;
- a counting ring surrounding the base part;
- and,
- an indexing device operationally disposed between the actuating pusher and the counting ring, the indexing device rotating in steps during the axial displacement of the actuating pusher, the counting ring and the indexing device forming a counter for automatically counting the actuating strokes.
Dependencies are inferred from the claim text.