Rotating keyed dispensing cartridge system

摘要

A piston of a piston pump adapted to be selectively coaxially slidably coupled to a complementary actuator mechanism by a keying arrangement utilizing one or more key elements engaging with one or more keyways, to place the piston and actuator mechanism in rotational alignment about the axis and with keying involving complementary circumferential location of keying elements and keyways, complementary radial extents of key members and keyways relative the axis, and/or complementary shapes for the key elements and keyways normal the axis.

主权项

1. A dispenser for dispensing a fluid comprising:
a housing, a removable reservoir insertable into the housing to assume a dispensing position and removable from the housing for replacement, the reservoir comprising: (i) a chamber for retaining the fluid having an outlet, and (ii) a valve mechanism disposed across the outlet for dispensing the fluid from the chamber, the valve mechanism comprising a reciprocally movable element for reciprocal movement along an axis relative to the housing when the reservoir is in the dispensing position to dispense the fluid, an actuator on the housing for engaging the element to reciprocally axially slide the element, the element rotatable about the axis relative the actuator, a lock out key carried on the element, a keyway carried on the actuator, wherein with the element coaxially aligned with the actuator (a) with the element in a desired relative rotational position about the axis relative the actuator with axial sliding of the element relative the actuator, the lock out key is received in the keyway and the actuator couples with the element for reciprocal movement to dispense the fluid and (b) with the element in undesired rotational positions different than the desired rotational position relative the actuator the lock out key is not in the keyway and blocks coupling of the actuator and the element, a cam surface carried on the element, a camming surface carried on the actuator, wherein with the element coaxially aligned with the actuator with axial sliding of the element relative the actuator the cam surface and camming surface engage to rotate the element about the axis from the undesired rotational positions to the desired rotational position.