The present disclosure relates to a razor which is easy to wash and includes a through-hole connected to a cartridge via a handle, the razor including a razor blade cartridge including at least one razor blade, and a handle coupled to a rear of the razor blade cartridge, wherein the handle is shaped to comprise a through-hole which extends along at least a portion of a profile of the handle, and the through-hole includes a first open area formed to face the rear of the razor blade cartridge and a second open area which is opposite the first open area.

Shaving systems are disclosed that include a replaceable shaving assembly and a cartridge connecting structure for connecting the shaving assembly to a handle. In preferred implementations, the cartridge connecting structure has a magnetic portion configured to help draw the cartridge onto the handle and retain the cartridge in place when the razor is not in contact with the skin, and a mechanical engagement that provides the necessary retention forces required to keep the system intact during shaving.

Shaving systems are disclosed that include a replaceable shaving assembly and a cartridge connecting structure for connecting the shaving assembly to a handle. In preferred implementations, the cartridge connecting structure has a magnetic portion configured to help draw the cartridge onto the handle and retain the cartridge in place when the razor is not in contact with the skin, and a mechanical engagement that provides the necessary retention forces required to keep the system intact during shaving.

A primary battery includes a cathode having a non-stoichiometric metal oxide including transition metals Ni, Mn, Co, or a combination of metal atoms, an alkali metal, and hydrogen; an anode; a separator between the cathode and the anode; and an alkaline electrolyte.

An integrally formed rigid razor blade made of martensitic stainless steel includes a cutting edge portion, a base portion, and a bent portion. The cutting edge portion extends along a cutting edge portion axis and has a cutting edge at one end. The base portion extends along a base portion axis. The bent portion is intermediate the cutting edge portion and the base portion. The blade has a concave face and an opposed convex face. An average radius of curvature of the concave face of the bent portion is between 0.4 millimeters and 1 millimeter.

An integrally formed rigid razor blade made of martensitic stainless steel includes a cutting edge portion, a base portion, and a bent portion. The cutting edge portion extends along a cutting edge portion axis and has a cutting edge at one end. The base portion extends along a base portion axis. The bent portion is intermediate the cutting edge portion and the base portion. The blade has a concave face and an opposed convex face. An average radius of curvature of the concave face of the bent portion is between 0.4 millimeters and 1 millimeter.

A razor assembly comprising a handle portion having a frustoconical portion and a ring portion depending therefrom; a blade support removably secured to said ring portion; a blade cartridge having a blade member, whereby said blade cartridge is removably attached to said blade support.

A razor assembly comprising a handle portion having a frustoconical portion and a ring portion depending therefrom; a blade support removably secured to said ring portion; a blade cartridge having a blade member, whereby said blade cartridge is removably attached to said blade support.

A razor cartridge is proposed. The razor cartridge may include a plurality of razor blades installed in one direction of a cartridge frame, and a trimmer installed in the other direction of the cartridge frame. The trimmer may include a trimming blade seated in a seating groove formed in the cartridge frame, and a trimmer cap coupled to both sides of the cartridge frame so that the trimming blade is fixed.