Abstract: A safety razor for shaving back hair. A substrate structure at an end of an elongated back shaver handle opposite a grip end holds both a blade group and a support. The blade group has a sharp blade and a guard parallel thereto. The support can be either a blunt protrusion or another blade group. The blade group and the support are spaced a tactile discrimination distance from another blade group and support sufficiently wide enough to achieve two-point discrimination tactile feedback felt through a torso region of the skin of the user.

Abstract: Battery operated appliances are provided. Some appliances include a housing defining a chamber having an interior wall, electronics within the chamber, a battery cover, and a closing system including (a) a first electrically conductive member secured to the battery cover, and (b) a second electrically conductive member secured to the interior wall of the housing and configured to engage the first electrically conductive member and thereby mechanically secure the battery cover to the housing while also establishing electrical contact between the first and second electrically conductive members.

Abstract: Battery operated appliances are provided. Some appliances include a housing defining a chamber having an interior wall, electronics within the chamber, a battery cover, and a closing system including (a) a first electrically conductive member secured to the battery cover, and (b) a second electrically conductive member secured to the interior wall of the housing and configured to engage the first electrically conductive member and thereby mechanically secure the battery cover to the housing while also establishing electrical contact between the first and second electrically conductive members.

Abstract: Battery operated appliances are provided. Some appliances include a housing defining a chamber having an interior wall, electronics within the chamber, a battery cover, and a closing system including (a) a first electrically conductive member secured to the battery cover, and (b) a second electrically conductive member secured to the interior wall of the housing and configured to engage the first electrically conductive member and thereby mechanically secure the battery cover to the housing while also establishing electrical contact between the first and second electrically conductive members.

Abstract: This invention generally relates to enlarging a hole in a substrate such that the enlarged hole is centered on the existing hole. A knock-out punch and die tool for enlarging a knock-out hole in an electrical box includes a punch; a generally cup shaped die; a threaded central shaft supporting the punch on one end and the die on the other end; a removable centering element placed in a cup portion of the die; and a resilient element, such as a spring, urging the centering element in an axial direction along a length of the shaft outwardly of the cup portion. The centering element and the spring may be provided as a retrofitting kit for converting non-centering punch and die tools into centering punch and die tools.

Abstract: An electric shaver including an outer cutter holder (30) that holds the outer cutters (24), an inner cutter holder (42) which has a plurality of projections (50) that pass through the outer cutter holder (30) and press the outer circumferential edges of the outer cutters (24) and which holds the inner cutters (36) so that the inner cutters are rotatable, a single shaft member (62) which passes through the inner cutter holder (42) and outer cutter holder (30) and whose tip end is positioned in the cutter frame (20) so as to be located between the mutually adjacent outer cutters (24), and a cutter retaining assembly (60), which the shaft member (62) passes through and is detachably anchored to the cutter frame (20) and further elastically presses the inner cutter holder (42) toward the outer cutters.

Abstract: It consists of a main body, preferably of cylindrical form, over whose ends the lather spray container and the aftershave or lotion spray container for aftershave use are introduced, each end being closed by its own cap. The cap which closes the lather spray container unwinds at one side by a body parallel to the main body, resembling the ball-point pen fastener in function. The body incorporates shaving heads on both sides and in front a visual mirror, either plane or concave. The connection system between heads and main body of the unit is a detachable male-female connection of the heads.

Abstract: An improved blade replaceable type barber razor including a razor body comprising a handle portion and a first blade holder half made integral with the handle portion, a second blade holder half adapted to be hinge connected to the first one and slidable wedge for firmly clamping a blade between both the clamping surfaces of the first and second holder halves by its sliding movement in the slide groove in the longitudinal direction is disclosed. A recess is provided in the corner area as defined between the forward end face of the slide groove and the inner wall of the one blade holder half and a projection projected from the inner wall of the other blade holder half is provided in the corner area as defined by the forward end face of the slide groove and the inner wall of the other blade holder half.

Abstract: A safety razor including a platform member and a cap member releasably interengageable to clamp a razor blade therebetween, the cap member having on its undersurface projection means which extend through the platform member and are adapted to be releasably engaged to clamp the said members together. The projection means have a substantial longitudinal extent to provide for distribution of the clamping forces.

Abstract: A safety razor in which a double edge blade is held clamped in shaving position between a bridge member and cap member carried on a mounting plate attached to a handle. To change the blade, the bridge member and cap are slid longitudinally of the mounting plate to a second or blade change position and the cap is lifted free to provide access to the blade for changing same.