Fluid dispensers with increased mechanical advantage

A dispenser comprising:

• a housing;
• a reservoir positioned in the housing that contains a supply of a fluid to be dispensed;
• and
• a dispense mechanism configured to dispense a discrete quantity of the fluid from the reservoir, the dispense mechanism comprising:
• a lever member having a first lever section accessible on an exterior side of the housing, a second lever section, and a fulcrum connected between the first lever section and the second lever section, the fulcrum pivotally supported within the housing such that the lever member is moveable between a rest position and a dispense position upon application of an input force to the first lever section, wherein movement of the lever member between the rest position and the dispense position results in application of an output force by the second lever section;
• and
• an actuator configured to receive application of the output force from the second lever section;
• a pump configured to receive the output force from the actuator and apply a corresponding dispensing force to the reservoir to dispense the discrete quantity of fluid from the reservoir,
• the second lever section configured to provide at least two contacts points with the actuator as the lever member is moved from the rest position to the dispense position such that the mechanical advantage provided at a first one of the at least two contact points is greater than the mechanical advantage provided at a second one of the at least two contact points, such that an output force applied to the actuator at the first contact point is greater than an output force applied to the actuator at the second contact point.

A dispenser comprising

• a housing;
• a reservoir positioned in the housing that contains a supply of a fluid to be dispensed;
• a dispense mechanism configured to dispense a discrete quantity of the fluid from the reservoir, the dispense mechanism comprising:
• a lever member having a first lever section accessible on an exterior side of the housing, a second lever section, and a fulcrum connected between the first lever section and the second lever section, the fulcrum pivotally supported within the housing such that the lever member is moveable between a rest position and a dispense position upon application of an input force to the first lever section, and such that movement of the lever member between the rest position and the dispense position results in application of a corresponding output force by the second lever section;
• and
• an actuator configured to receive application of the output force from the second lever section resulting in dispensation of the discrete quantity of the fluid from the reservoir,
• the lever member and the actuator operable to provide at least two contact surfaces between the actuator and the second lever section as the lever member is moved from the rest position to the dispense position such that the mechanical advantage provided at a first one of the at least two contact surfaces is greater than the mechanical advantage provided at a second one of the at least two contact surfaces, and such that the output force corresponding to the first contact surface is greater than the output force corresponding to the second contact surface.