Abstract: Provided are an outer blade for a reciprocation-type electric shaver and a method of producing the outer blade, the outer blade being capable of suppressing a deformation such as wrinkles or an undulation, without adding a new component, to thereby keep a good appearance thereof. A sheet material for forming the outer blade is bent into a shape projecting upward when viewed in the lateral directions. The sheet material has hair introduction holes, the peripheral edge of each hair introduction hole forming a projection section projecting inward beyond the other portion of the sheet material, the end surfaces of a part of the projection sections make contact with a reciprocating inner blade. The sheet material is formed with a deformation suppression section in a specific region not including the projection sections which make contact with the inner blade but including the projection sections which make no contact with the inner blade.

Abstract: Provided are an outer blade for a reciprocation-type electric shaver and a method of producing the outer blade, the outer blade being capable of suppressing a deformation such as wrinkles or an undulation, without adding a new component, to thereby keep a good appearance thereof. A sheet material for forming the outer blade is bent into a shape projecting upward when viewed in the lateral directions. The sheet material has hair introduction holes, the peripheral edge of each hair introduction hole forming a projection section projecting inward beyond the other portion of the sheet material, the end surfaces of a part of the projection sections make contact with a reciprocating inner blade. The sheet material is formed with a deformation suppression section in a specific region not including the projection sections which make contact with the inner blade but including the projection sections which make no contact with the inner blade.

Abstract: A compact pump has a pump chamber, inlet and outlet channels communicating with the pump chamber, and a pair of check valve units between the pump chamber and the inlet and outlet channels. Each check valve unit has a thin film check valve membrane, and a check valve body with a channel opened and closed by the check valve membrane due to a pressure difference.