Abstract: A replacement cartridge for repairing rather than replacing an angle cock. The cartridge has a ball key with a ball and a shaft. A unitary ball seat that has first and second internal bearing surfaces for engaging the ball is used to support the ball key when installed in the angle cock body that is being repaired. A cover is positioned over the ball seat and defines a bore through which the shaft of the ball key extends. A handle is coupled to the shaft of the ball key so that a user may rotate the ball between the internal bearing surfaces between an open position and a closed position.

Abstract: A knuckle for a rail car coupler that reduces bending of an intermediate portion of the pivot pin that coupled the knuckle to a rail car coupler. The knuckle has a body with a throughbore defining a first bearing surface at a first end of the throughbore and a second bearing surface and a second end of the throughbore. A support extends from the body into the throughbore and includes a third bearing surface positioned between the first bearing surface and the second bearing surface. When a pivot pin is positioned in the throughbore, it will contact the first bearing surface, the second bearing surface, and the third bearing surface, with the third bearing support protecting against bending of the pivot between the first and second bearing surfaces.

Abstract: the present invention involves several approaches for coupling the cover of the angle cock to the main body of the angle cock to avoid the need for tools to effect a repair of the angle cock. The angle cock has a main body with a brake pipe inlet, a brake pipe outline, and a mouth positioned between the brake pipe inlet and the brake pipe outlet. A ball valve positioned in the main body to selectively permit communication between the brake pipe inlet and the brake pipe outlet and has a stem extending out of the mouth. A cover is positioned in covering relation to the mouth to seal the mouth and the stem. The cover and mouth include corresponding structure to ensure a tight seal and to interlock the cover and main body together in a way that can be unlocked without tools.

Abstract: A replacement cartridge for repairing rather than replacing an angle cock. The cartridge has a ball key with a ball and a shaft. A unitary ball seat that has first and second internal bearing surfaces for engaging the ball is used to support the ball key when installed in the angle cock body that is being repaired. A cover is positioned over the ball seat and defines a bore through which the shaft of the ball key extends. A handle is coupled to the shaft of the ball key so that a user may rotate the ball between the internal bearing surfaces between an open position and a closed position.