Inner cutter for an electric rotary shaver and an electric rotary shaver

An electric rotary shaver comprising

• (a) a main body case that contains an electric motor, and
• (b) a cutter head section that is detachably mounted on an upper portion of the main body case, the cutter head section including outer cutters and inner cutters that shave hair in cooperation with the outer cutters while rotating in sliding contact with the outer enters, wherein
• (c) each of the inner cutters is comprised of:
• a cutter supporting member that has a ring-form body formed in a shape of a flat plate and a plurality of upright supporting portions which rise from an outer-circumferential edge of the ring-form body and are lined up side by side;
• and
• an inner cutter body that is formed on a tip end of each one of the upright supporting portions, wherein
• the upright supporting portions are formed wit gaps between adjacent upright supporting portions, and
• adjacent upright supporting portions are connected to each other by ribs at positions that are away from the ring-form body.

An electric rotary shaver comprising:

• (a) inside outer cutters;
• (b) cylindrical outside outer cutters which surround the inside outer cutters in a concentric configuration, the cylindrical outside outer cutters being mounted inside a cutter frame so that tip ends of the outside outer cutters protrude together with the inside outer cutters from outer cutter holes Conned in the cutter frame;
• (c) inside inner cutters tat make a sliding contact with the inside outer cutters;
• and
• (d) outside inner cutters that make a sliding contact with the outside outer cutters, wherein
• (e) each of the outside inner cutters is comprised of:
• a cutter supporting member tat has a ring-form body formed in a shape of a flat plate and a plurality of upright supporting portions which rise from an outer-circumferential edge of the ring-form body and are lined up side by side, and
• an inner cutter body that is formed on a tip end of each one of the upright supporting portions, wherein
• the upright supporting portions are formed with gaps between adjacent upright supporting portions, and
• adjacent upright supporting portions are connected to each other by ribs at positions that are away from the ring-form body;
• (f) the outside outer cutters are provided inside the cutter frame so that the outside outer cutters are tiltable with respect to axial lines of the outer cutter holes and movable along the axial lists, and the inside outer cutters are connected to the outside outer cutters so that the inside outer cutters are tiltable with respect to axial lines of the outside outer cutters and movable along tire axial lines;
• (g) the inside inner cutters are engaged with the inside outer cutters so that the inside inner cutters are rotatable in a state in which the axial lines of the inside inner cutters and the inside outer cutters constantly coincide;
• and
• (h) the outside inner cutters are engaged with the outside outer cutters so that the outside inner cutters are rotatable in a state in which the axial lines of both cutters constantly coincide.