Abstract: A system for formulating customized cosmetic products is provided that comprises an interface device allowing a user to select a cosmetic product and an additive, a single batch cosmetic device in electronic communication with the interface device configured to dispense the selected additive into a single batch cosmetic base, and a mixing assembly configured to mix the additive with the base to produce a customized cosmetic product. Various example embodiments of the present general inventive concept may also include a cosmetic cartridge configured for reversible attachment to a fluid connection of the dispensing assembly in the system, a method for formulating cosmetic products, and a method for registering cosmetic product colors from a set of proposed color options.

Abstract: A chuck having radially movable jaws and axially extending jaw-operating levers pivotally mounted intermediate their ends to form shorter and longer arms, of which the shorter arms are operatively connected with the jaws, and the longer arms provide counterbalances for the jaws and are in follower engagement with wedge surfaces on an inward flange formation on a sleeve piston in an outer ring-shaped power cylinder which lengthwise is more or less coextensive with the jaw-operating levers.