Abstract: A coupling apparatus having a male member and a female member. The male member includes a flow passage having radially extending ports and a valve means. The female member includes a body member having an interior surface and a flow passage, a socket member having an exterior surface and a flow passage, and, an insert member having a first complementary surface and a second complementary surface. The valve means of said male member allows communication between said radially extending ports and said flow passage of said socket member. The interior surface of said body member is engaged in sliding contact with said first complementary surface of said insert member thus permitting universal movement of said insert member relative to said body member. The exterior surface of said socket member is engaged in sliding contact with the second complementary surface of said insert member thus permitting radial movement of said socket member relative to said insert member.

Abstract: A quick disconnect coupling wherein the male coupler part has both threads and a groove so that it can be universally secured to a female coupler part regardless of whether the female coupler part carries a threaded nut or detent type securing or connecting means.

Abstract: In-line flow regulator for use in hydraulic flow systems is presented using a fixed size orifice which may be manually adjustable by blocking off a part of the orifice to provide an exact rate of flow in the regulated flow direction and which otherwise provides a free flow in the reverse direction.

Abstract: A cable reel control valve and associated system for controlling the operation of a hydraulic motor unit coupled to a reel mounted on a vehicle, such as a mine car or the like and wherein the reel is adapted to automatically wind electrical cable thereon as the mine car moves toward the point where the cable is connected to the source of power, and to automatically pay-out the cable as the mine car moves away from the electrical cable connection to the source of power.

Abstract: A coupling assembly for fluid-flow systems is disclosed which includes both a coupler and a nipple. The mating or sealing surfaces of the coupler and nipple are protected from dirt and other deleterious substances by corresponding moveable covers. The moveable covers not only protect the mating surfaces but present flush faces for the coupler and nipple which are easily cleaned. The construction of the coupling assembly is designed so that connection of the coupler and nipple may be accomplished by using only one hand. The coupler is designed so as to render the adapter and the valve a one-piece structure.

Abstract: A cartridge type check valve which may be either pilot operated or of the free flow type. The pilot operated type includes in combination a generally cylindrically-shaped housing having first and second end portions and having internal wall means defining an opening extending axially therethrough. A valve seat is formed on the internal wall means and a valve member is movable into and out of engagement with the valve seat to selectively prohibit and permit fluid flow through the axially extending opening at the valve seat. A fluid port is provided in the first end portion of the housing and serves to provide for fluid entrance into the axially extending opening. A control piston is positioned in the second end portion of the housing and is movable between first and second positions as is a valve stem, which is connected to the valve member and extends axially to a position adjacent the control piston and is adapted to be engaged and moved by the control piston.