Patent ID: 7568598

Claim:
A dispenser for flowable materials comprising: a support member, an actuator member reciprocally movable relative to the support member between an extended position and a retracted position to dispense flowable material, a spring mechanism biasing the actuator member to one of the extended position and the retracted position, the spring mechanism comprising a first spring member and a second spring member, the second spring member being a separate, distinct element from the first spring element, the first spring member comprising an elongate cantilevered leaf spring member having a first end and a distal second end, the first end of the first spring member fixedly secured to the support member, the first spring member extending along a longitudinal of the first spring member from the first end of the first spring member toward the actuator member to the distal second end of the first spring member, the first spring member having an unbiased condition and being resiliently deflectable generally normal to its longitudinal to deflected conditions from which the first spring member inherently attempts to return to its unbiased condition, the second spring member comprising an elongate cantilevered leaf spring member having a first end and a distal second end, the first end of the second spring member fixedly secured to the actuator member, the second spring member extending along a longitudinal of the second spring member from the first end of the second spring member toward the support member to the distal second end of the second spring member, the second spring member having an unbiased condition and being resiliently deflectable generally normal to its longitudinal to deflected conditions from which the second spring member inherently attempts to return to its unbiased condition, the first spring member proximate the distal end thereof engaging the second spring member proximate the distal end thereof to interact as a combined double leaf spring.