Patent ID: 8033023

Claim:
A replaceable razor blade cartridge comprising: a blade unit, and a cartridge connecting structure for connecting the blade unit to a handle, the cartridge connecting structure comprising a molded body, the cartridge connecting structure having inwardly directed surfaces that partially define a handle-receiving region and mate with outwardly directed surfaces on a handle connecting structure of the handle; and the cartridge connecting structure having a connection entrance to the handle-receiving region, and a projection that extends into the handle-receiving region, the projection having a blocking surface facing the opposite direction from the connection entrance to retain the handle connecting structure on the cartridge connecting structure; and the cartridge connecting structure also having a blade unit receiving portion having a shell bearing structure that pivotally receives the blade unit, the shell bearing structure comprising a pair of shell bearings; and the cartridge connecting structure having a spring return for biasing the blade unit relative to the cartridge connecting structure, the spring return being positioned between the shell bearings and extending integrally from the molded body of the cartridge connecting structure.