Abstract: A disposable razor with means for recording usage including a blade cartridge portion and a handle portion, the handle portion including a sidewall with an inner and outer surface. A plurality of push tabs are located on the sidewall of the handle, the push tabs being bordered by one or more grooves formed into the inner and/or outer surface of the sidewall; or the push tabs are bordered by one or more grooves formed into one or both surfaces of the sidewall and one or more slits extending all the way through the sidewall. Pressure applied onto the outer surface of a push tab causes a portion of the push tab to break away from the remainder of the sidewall, leaving a visible "breakline", and so providing a means for recording a limited numerical quantity.

Abstract: The several embodiments include a hypodermic needle with a hollow member positioned over a portion of the needle, thus covering that portion of the needle. Prior to and during use, the hollow member is held away from the piercing end of the needle to allow it to be used in the normal manner. After the needle has become contaminated, a simple action by the user places the hollow member in a position covering the piercing end of the needle, and the hollow member is supported in this position against rearward pressure. The hollow member is similarly kept from sliding off the end of the needle.

Abstract: In the several embodiments, a tire chain, and a method of installing a tire chain in which a line extends from each of the opposite ends of the portion of the tire chain that encircles the inside of a tire. In a preferred embodiment, the two lines cross the treaded portion of the tire diagonally, so that one line crosses the other, and are connected to the portion of the tire chains that encircle the outside of the tire. Preferably, the two lines are connected to each other at the point where they cross, which is about at the center of the treaded surface of the tire.