Ramped actuator for engagement flange on removable dispenser cartridge
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 catch member having a central cavity formed therein coaxially about the axis,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, in the coupled orientation the movable element located coaxially within the cavity,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,the catch member including an axial entranceway extending circumferentially about the axis axially into the cavity for passage of the movable element in moving from an axial uncoupled orientation in which the movable element is axially aligned with the cavity axially spaced therefrom to the coupled orientation,the entranceway having a diametrical extent which permits movement of the movable element axially relative the catch member through the entranceway when the resilient member is in one of the deflected configurations yet preventing movement of the movable element axially relative the catch member through the entranceway when the resilient member is in 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 configuration 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,the catch member including a radial exitway extending radially from the cavity for passage of the movable element in moving from the coupled orientation to the radial uncoupled orientation,the exitway having a circumferential extent relative the axis which permits movement of the movable element radially relative the catch member through the exitway when the resilient member is in one of the deflected configuration yet preventing movement of the movable element radially relative the catch member through the exitway when the resilient member is in the inherent configuration,the cavity is defined within a circumferential axially extending side wall of the catch member with the exitway extending radially through the side wall,the side wall having an exterior surface facing radially outwardly from the cavity,ramp camming surfaces on the exterior surface of the side wall on opposite circumferentially spaced sides of the exitway for engagement with the moveable element such that on moving the movable element radially inwardly from the radial uncoupled orientation engagement between the opposed ramp camming surfaces and the movable element moves the movable element axially wherein with-movement of the moveable element radially from the radial uncoupled orientation to a position in which the movable element is coaxial with the cavity the movable element is moved from the radial uncoupled orientation to the axial uncoupled orientation.
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Accused Products
Abstract
An improved arrangement for removably coupling a replaceable cartridge to a housing of a dispenser with the cartridge carrying a piston pump with a movable piston element to be coupled on insertion with an actuator plate of the housing. A ramp mechanism is provided on the actuator plate to engage the piston element and during insertion of the cartridge into the housing move the piston element to a position relative the actuator plate which facilitates proper coupling including a resilient member which prevents radial movement relative a catch member of the housing from a coupled orientation unless the resilient member is deflected from an unbiased inherent configuration.
34 Citations
19 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 catch member having a central cavity formed therein coaxially about the axis, 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, in the coupled orientation the movable element located coaxially within the cavity, 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, the catch member including an axial entranceway extending circumferentially about the axis axially into the cavity for passage of the movable element in moving from an axial uncoupled orientation in which the movable element is axially aligned with the cavity axially spaced therefrom to the coupled orientation, the entranceway having a diametrical extent which permits movement of the movable element axially relative the catch member through the entranceway when the resilient member is in one of the deflected configurations yet preventing movement of the movable element axially relative the catch member through the entranceway when the resilient member is in 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 configuration 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, the catch member including a radial exitway extending radially from the cavity for passage of the movable element in moving from the coupled orientation to the radial uncoupled orientation, the exitway having a circumferential extent relative the axis which permits movement of the movable element radially relative the catch member through the exitway when the resilient member is in one of the deflected configuration yet preventing movement of the movable element radially relative the catch member through the exitway when the resilient member is in the inherent configuration, the cavity is defined within a circumferential axially extending side wall of the catch member with the exitway extending radially through the side wall, the side wall having an exterior surface facing radially outwardly from the cavity, ramp camming surfaces on the exterior surface of the side wall on opposite circumferentially spaced sides of the exitway for engagement with the moveable element such that on moving the movable element radially inwardly from the radial uncoupled orientation engagement between the opposed ramp camming surfaces and the movable element moves the movable element axially wherein with-movement of the moveable element radially from the radial uncoupled orientation to a position in which the movable element is coaxial with the cavity the movable element is moved from the radial uncoupled orientation to the axial uncoupled orientation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A dispenser for dispensing fluid comprising:
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a housing, a reservoir, 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, the reservoir comprising; (i) a chamber for retaining fluid having an outlet, and (ii) a valving mechanism disposed across the outlet for dispensing fluid from the chamber, 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 reciprocally movable element including an engagement mechanism to engage the actuator catch member and couple the reciprocally movable element to the actuator mechanism, the engagement mechanism comprising a resilient member extending radially outwardly from the reciprocally movable element in an unbiased inherent position, the resilient member being resiliently deflectable radially from the unbiased inherent position to a deflected position of a different radial extent than the unbiased inherent position and biased to return to the unbiased inherent position when deflected away from the unbiased inherent position toward the deflected position, wherein when the reservoir is inserted into the dispensing position, the engagement mechanism and catch member assume relative positions; (a) a coupled orientation in which the engagement mechanism engages the catch member for reciprocal movement of the reciprocally movable element to dispense fluid with movement of the actuator mechanism between the first position and the second position, (b) an axial uncoupled orientation from which on a first cycling of the actuator mechanism between the first position and the second position, the engagement mechanism and catch member are moved relative to each other such that the catch member is forced axially into the resilient member, wherein from the uncoupled orientation on relative forcing the catch member axially into the resilient member engagement therebetween deflects the resilient member radially sufficiently to permit the catch member to move axially relative the resilient member from the uncoupled orientation to the coupled orientation, where in the coupled orientation the resilient member returns to the unbiased inherent position, and (c) a radial uncoupled orientation wherein from the coupled orientation on moving the movable element radially relative the catch member the catch member moves radially from the coupled orientation to the radial uncoupled orientation in which the reservoir may be removed from the housing, ramp camming surfaces on an exterior surface of the actuator mechanism for engagement with the moveable element such that on moving the movable element radially inwardly from the radial uncoupled orientation engagement between the opposed ramp camming surfaces and the engagement mechanism moves the movable element axially wherein with movement of the moveable element radially from the radial uncoupled orientation to a position in which the movable element is coaxial with the cavity the movable element is moved from the radial uncoupled orientation to the axial uncoupled orientation.
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Specification