초록 ▼

A dispenser unit adapted for single use and preferably secured to a wall with a reusable wall plate. The dispensing unit is preferably an assembled unit which, as a unit, is mountable to and removable from the mounting plate, preferably with the assembled dispensing unit being separately functional

A dispenser unit adapted for single use and preferably secured to a wall with a reusable wall plate. The dispensing unit is preferably an assembled unit which, as a unit, is mountable to and removable from the mounting plate, preferably with the assembled dispensing unit being separately functional and the mounting plate is preferably required merely for mounting of the dispensing unit to the wall.

대표청구항 ▼

We claim: 1. A dispenser for flowable materials comprising: a wall plate for mounting to a wall; a dispensing unit for removably mounting to the wall plate; the dispensing unit comprising an assembly of: a bottle-like reservoir having an exit opening, a piston pump mechanism having a piston chamber

We claim: 1. A dispenser for flowable materials comprising: a wall plate for mounting to a wall; a dispensing unit for removably mounting to the wall plate; the dispensing unit comprising an assembly of: a bottle-like reservoir having an exit opening, a piston pump mechanism having a piston chamber forming element coupled to the opening of the reservoir and a piston member reciprocally slidable in the piston chamber forming element for reciprocal sliding to dispense flowable material from the reservoir through an extension of the piston member extending outwardly from the piston chamber forming element, an actuator member having a support member fixedly coupled to the reservoir about its opening and a presser member engaging the piston extension and pivotally coupled to the support member for movement between an extended position and a retracted position, with a spring member biasing the presser member to the extended position, wherein manual movement of the presser member between an extended and a retracted position slides the piston member in the piston chamber forming element to dispense flowable material from the extension of the piston element, wherein the spring member comprises an elongate member coupled at one first end to one of the presser member and the support member and with the second end engaging the other of the presser member and the support member. 2. A dispenser as claimed in claim 1 wherein the spring member together with at least one of the presser member and the support member comprise a unitary element injection molded from plastic. 3. A dispenser for flowable materials comprising: a wall plate for mounting to a wall; a dispensing unit for removably mounting to the wall plate; the dispensing unit comprising an assembly of: a bottle-like reservoir having an exit opening, a piston pump mechanism having a piston chamber forming element coupled to the opening of the reservoir and a piston member reciprocally slidable in the piston chamber forming element for reciprocal sliding to dispense flowable material from the reservoir through an extension of the piston member extending outwardly from the piston chamber forming element, an actuator member having a support member fixedly coupled to the reservoir about its opening and a presser member engaging the piston extension and pivotally coupled to the support member for movement between an extended position and a retracted position, with a spring member biasing the presser member to the extended position, wherein manual movement of the presser member between an extended and a retracted position slides the piston member in the piston chamber forming element to dispense flowable material from the extension of the piston element, wherein the spring member comprises an elongate cantilevered leaf spring member integrally formed from plastic by injection molding as a unitary element with the support member, the spring member extending along a longitudinal of the spring member from a first end thereof which merges into the support member toward the support member to a distal second end thereof, the spring member and the presser member engaging each other proximate the second end of the spring member, the spring member having an unbiased condition and being resiliently deflectable generally normal to its longitudinal to deflected conditions from which the spring member inherently attempts to return to its unbiased condition. 4. A dispenser as claimed in claim 3 wherein an elongate slideway is provided on the presser member for engagement by the second end of the spring member with the second end of the spring member sliding longitudinally on the slideway as the presser member and the support member pivot relative each other between the extended position and the retracted position. 5. A dispenser as claimed in claim 4 wherein the second end of the spring member engages the slideway proximate a first end of the slideway when the presser member and the support member are in the extended position and the second end of the spring member engages the slideway proximate a second end of the slideway when the presser member and the support member are in the retracted position, the slideway being disposed such that over an inclined portion of the slideway extending from the second end of the slideway towards the first end of the slideway, the slideway is disposed relative the presser member such that the slideway in any position of the presser member and the support member is progressively further from the presser member with distance from the first end of the slideway towards assisting in reducing the deflection required of the of the spring member to bias the presser member and the support member from the retracted position to the extended position. 6. A dispenser as claimed in claim 5 wherein the support member has a support shelf with an elongate slotway formed therein, the spring member disposed longitudinally in the slotway merging with the support shelf at one end of the slotway and extending out of the plane of the support shelf toward the second end of the spring member. 7. A dispenser as claimed in claim 6 wherein the spring member has in cross-section normal to its longitudinal, at least proximate with where it merges with the support member, a U-shape with two legs joined by a bight and the two legs being disposed substantially normal to the support surface. 8. A dispenser as claimed in claim 7 wherein the spring member is provided with resiliency substantially by the resilient deflection of opposed portions of the two legs towards and away from each other. 9. A dispenser as claimed in claim 3 wherein the support member is pivotally coupled to the presser member for pivoting about a hinge axis and the longitudinal of the spring member remains disposed in a plane normal to the hinge axis in deflecting between the unbiased condition and the defected conditions. 10. A dispenser as claimed in claim 9 wherein the support member, the presser member and the spring member together comprise a unitary element injection molded from plastic. 11. A dispenser for flowable materials comprising: a wall plate for mounting to a wall; a dispensing unit for removably mounting to the wall plate; the dispensing unit comprising an assembly of: a bottle-like reservoir having an exit opening, a piston pump mechanism having a piston chamber forming element coupled to the opening of the reservoir and a piston member reciprocally slidable in the piston chamber forming element for reciprocal sliding to dispense flowable material from the reservoir through an extension of the piston member extending outwardly from the piston chamber forming element, an actuator member having a support member fixedly coupled to the reservoir about its opening and a presser member engaging the piston extension and pivotally coupled to the support member for movement between an extended position and a retracted position, with a spring member biasing the presser member to the extended position, wherein manual movement of the presser member between an extended and a retracted position slides the piston member in the piston chamber forming element to dispense flowable material from the extension of the piston element, wherein the support member, the presser member and the spring member together comprise a unitary element injection molded from plastic, the presser member pivotally coupled to the support member by a living hinge for pivoting about a hinge axis, and the spring member comprises an elongate cantilevered leaf spring member coupled at one first end to one of the presser member and the support member and with a second end engaging the other of the presser member and the support member. 12. A dispenser for flowable materials comprising: a wall plate for mounting to a wall; a dispensing unit for removably mounting to the wall plate; the dispensing unit comprising an assembly of: a bottle-like reservoir having an exit opening, a piston pump mechanism having a piston chamber forming element coupled to the opening of the reservoir and a piston member reciprocally slidable in the piston chamber forming element for reciprocal sliding to dispense flowable material from the reservoir through an extension of the piston member extending outwardly from the piston chamber forming clement, an actuator member having a support member fixedly coupled to the reservoir about its opening and a presser member engaging the piston extension and pivotally coupled to the support member for movement between an extended position and a retracted position, with a spring member biasing the presser member to the extended position. wherein manual movement of the presser member between an extended and a retracted position slides the piston member in the piston chamber forming element to dispense flowable material from the extension of the piston element, wherein the support member and the presser member together comprise a unitary element injection molded from plastic with the presser member pivotally coupled to the support member by a living hinge for pivoting about a hinge axis. 13. A dispenser as claimed in claim 12 wherein the presser member carrying piston catch members to engage the piston extension, the piston catch members integrally formed with the presser member from plastic by injection molding. 14. A dispenser as claimed in claim 12 wherein the hinge axis extending horizontally when the dispensing unit is mounted to a wall plate for use, the axis located at a forward portion of the actuator at a height below a height of the bottle, the presser member carrying a hand lever extending downwardly from the axis and presenting a forwardly directed surface for engagement by a user's hand to move the lever rearwardly and thereby move the presser toward the refracted position, the hand lever integrally formed with the presser member from plastic by injection molding. 15. A dispenser as claimed in claim 14 wherein the presser member has a shelf extending rearwardly from the lever, the shelf carrying the piston catch members. 16. A dispenser as claimed in claim 15 wherein the presser member carrying first catch members and the support members carrying complementary second catch members, the first and second catch members engaging each other to prevent pivoting of the presser member and the support member away from each other beyond the extended position, the first catch members and second catch members integrally formed with the presser member and the support member from plastic by injection molding. 17. A dispenser as claimed in claim 16 wherein the shelf of the presser member carrying the first catch members. 18. A dispenser as claimed in claim 16 wherein the spring member is disposed between the presser member and the support member and biases the support member and the presser member apart. 19. A dispenser as claimed in claim 12 wherein while the dispensing unit is coupled to the wall plate the dispensing unit cannot be disassembled. 20. A dispenser as claimed in claim 19 wherein the dispensing unit must be assembled before it is coupled to the wall plate. 21. A dispenser as claimed in claim 20 wherein once the dispensing unit is assembled, the dispensing unit resists disassembly. 22. A dispenser as claimed in claim 21 wherein when the dispensing unit is coupled to the wall plate, the reservoir has its exit opening directed downwardly to gravity feed the flowable material in the reservoir to the piston pump mechanism to dispense flow of material downwardly through the piston member, and wherein the actuator member is disposed below the bottle, the presser member being biased to an extended position in which the presser member is remote from the wall plate and in manual movement of the presser member from the extended position towards a retracted position moves towards the wall plate. 23. A dispenser as claimed in claim 12 wherein the dispensing unit is removably coupled to the wall plate by engagement between the reservoir and the wall plate. 24. A dispenser as claimed in claim 23 wherein the reservoir is formed by blow molding from low density polyethylene. 25. A dispenser as claimed in claim 24 wherein the reservoir removably couples to the wall plate by vertical sliding of the reservoir downwardly relative the wall plate with laterally spaced and laterally extending catch members on the wall plate being received in complementary laterally spaced and laterally extending slotways formed in a rearward portion of the reservoir during blow molding. 26. A dispenser as claimed in claim 12 wherein the reservoir removably couples to the wall plate by vertical sliding of the bottle downwardly relative the wall plate to engage a rear portion of the reservoir with the wall plate, the support member couples to the reservoir by movement of the support member forwardly relative the rear portion of the reservoir such that with the rear portion of the reservoir coupled to the wall plate, the support member cannot be disengaged from the reservoir. 27. A dispenser as claimed in claim 26 wherein when the dispensing unit is assembled, the piston pump mechanism is contained within the actuator member between the presser member and support member against disengagement from the reservoir. 28. A dispenser as claimed in claim 12 wherein the reservoir is a substantially non-collapsible bottle.