Abstract: An improved retractable knife includes a frontal part of the blade carrier, which has a bottom blade supporting ledge, is embodied as a pallet adapted to firmly mount and support the area of the blade which remains within the handle so that there is no play or rattle of the blade irrespective of whether an apertured or solid blade is mounted on the carrier. The pallet has a plurality of register pins receivable in corresponding notches provided in a trapezoidal type cutting blade at the edge opposite the blade cutting edge.
Abstract: A reciprocating type electric shaver comprises an inner-blade mount holding many inner blades and connected to a first driver-element converting rotary motion of a motor into reciprocating motions and an outer blade connected to a second driver-element reciprocated at a mechanical phase reverse to the first driver-element so that the inner blades and outer blade can slidably engage with each other mutually at mechanically reverse phase and the relative momentum of the outer blade with respect to the inner blades can be enlarged.