Engagement flange for fluid dispenser pump piston
First Claim
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1. A dispenser for dispensing fluid comprising:
- a housing,a fluid containing reservoir having an outlet,the housing supporting the reservoir in a dispensing position,the reservoir being insertable into said housing to assume said dispensing position and removable therefrom for replacement,a valving mechanism disposed across the outlet for dispensing fluid from the reservoir, the valving 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 fluid,the housing including an actuator mechanism for actuating the reciprocally movable element, the actuator mechanism movable relative the housing between a first position and a second position, the actuator mechanism including a catch member,the movable element including an engagement mechanism to engage the catch member and releasably couple the movable element to the actuator mechanism in a coupled orientation in which movement of the actuator mechanism between the first position and the second position results in axial reciprocal movement of the movable element,the engagement mechanism comprising a resilient member extending radially outwardly from the movable element in an unbiased inherent configuration, the resilient member being resiliently deflectable radially from the inherent configuration to deflected configurations of different radial extents than the inherent configuration and biased to return to the inherent configuration when deflected from the inherent configuration,wherein from the coupled orientation on moving the movable element radially relative the catch member engagement between the catch member and the resilient member on the movable element deflects the resilient member radially from the inherent configuration to one of the deflected configurations permitting the resilient member and catch member to move radially from the coupled orientation to a radial uncoupled orientation in which the reservoir may be removed from the housing,in the coupled orientation the resilient member while in the inherent configuration engaging with the catch member to prevent moving the movable element radially relative the catch member from the coupled orientation to the radial uncoupled orientation.
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Abstract
An improved arrangement for removably coupling a movable element of a piston pump to an actuator mechanism with the movable element including a resilient member which prevents radial movement of the movable element relative a catch member of the actuator mechanism from a coupled orientation unless the resilient member is deflected from an unbiased inherent configuration.
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Citations
21 Claims
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1. A dispenser for dispensing fluid comprising:
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a housing, a fluid containing reservoir having an outlet, the housing supporting the reservoir in a dispensing position, the reservoir being insertable into said housing to assume said dispensing position and removable therefrom for replacement, a valving mechanism disposed across the outlet for dispensing fluid from the reservoir, the valving 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 fluid, the housing including an actuator mechanism for actuating the reciprocally movable element, the actuator mechanism movable relative the housing between a first position and a second position, the actuator mechanism including a catch member, the movable element including an engagement mechanism to engage the catch member and releasably couple the movable element to the actuator mechanism in a coupled orientation in which movement of the actuator mechanism between the first position and the second position results in axial reciprocal movement of the movable element, the engagement mechanism comprising a resilient member extending radially outwardly from the movable element in an unbiased inherent configuration, the resilient member being resiliently deflectable radially from the inherent configuration to deflected configurations of different radial extents than the inherent configuration and biased to return to the inherent configuration when deflected from the inherent configuration, wherein from the coupled orientation on moving the movable element radially relative the catch member engagement between the catch member and the resilient member on the movable element deflects the resilient member radially from the inherent configuration to one of the deflected configurations permitting the resilient member and catch member to move radially from the coupled orientation to a radial uncoupled orientation in which the reservoir may be removed from the housing, in the coupled orientation the resilient member while in the inherent configuration engaging with the catch member to prevent moving the movable element radially relative the catch member from the coupled orientation to the radial uncoupled orientation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A dispenser for dispensing fluid comprising:
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a housing, a fluid containing reservoir having an outlet, the housing supporting the reservoir in a dispensing position, the reservoir being insertable into said housing to assume said dispensing position and removable therefrom for replacement, a valving mechanism disposed across the outlet for dispensing fluid from the reservoir, the valving 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 fluid, the housing including an actuator mechanism for actuating the reciprocally movable element, the actuator mechanism movable relative the housing between a first position and a second position, the actuator mechanism including a catch member, the movable element including an engagement mechanism to engage the catch member and releasably couple the movable element to the actuator mechanism in a coupled orientation in which movement of the actuator mechanism between the first position and the second position results in axial reciprocal movement of the movable element, the catch member having a side wall which extends axially relative the axis and circumferentially relative the axis to define a central cavity therein coaxially about the axis, a radial exitway extending radially from the cavity through the side wall, in the coupled orientation the movable element located coaxially within the cavity, the engagement mechanism comprising a resilient member carried on the movable element, the resilient member inherently assuming an unbiased inherent configuration, the resilient member being resiliently deflectable from the inherent configuration to deflected configurations and inherently biased to return to the inherent configuration when deflected from the inherent configuration, in the coupled orientation the resilient member while in the inherent configuration engaging with the side wall of the catch member to resist moving the movable element radially relative the catch member from the coupled orientation through the exitway to the radial uncoupled orientation, wherein from the coupled orientation on moving the movable element radially relative the catch member toward the exitway engagement between the catch member and the resilient member on the movable element deflects the resilient member from the inherent configuration to deflected configurations conforming to a shape of the exitway so as to permit the deflected resilient member to move radially from the coupled orientation through the exitway to a radial uncoupled orientation. - View Dependent Claims (21)
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Specification