A quick-acting isolating valve including a valve body having a fixed seat defining an opening through which fluid may flow and co-acting therewith a movable head carried on a stem which is provided with a piston reciprocable in a piston chamber formed in the valve body, there being a fluid outlet from the chamber permitting discharge of fluid from the chamber upon movement of the piston within the chamber when the movable head moves toward or away from its fixed seat and means for effecting prog...

A barrel lock includes a cylindrical plug with a locking ball actuated by a positive acting threaded pin that is screwed into the plug. The plug slips into a mating cylindrical retainer and is locked in place by the pin forcing the ball to protrude beyond tile exterior of the cylindrical plug. An anti-rotation coupling that includes a key attaches to the plug which makes the barrel lock especially easy to install and operate. A threaded puller assures separation of the plug and retainer even whe...

The invention relates to an antimetastatically acting agent consisting of Eptaloprost, Cicaprost or combinations of TXA.sub.2 antagonist and prostacyclin derivatives.

A pump has an extruded metal housing surrounding a square internal chamber accommodating a piston assembly with square pistons. An eccentric member and block assembly associated with a driven shaft reciprocates the piston assembly to pump fluid. The flow of fluid into and out of the pumping chamber is controlled with intake and exhaust valves incorporated into plates mounted on opposite ends of the housing.

The invention relates to an electromagnetic actuator for a rapid linear motion with a limited length of stroke. The electromagnetic actuator includes a stationary arranged first coil (1, 6) and a second movable coil (2), with the winding of the stationary coil connected to controllable power source (7) and the winding of the movable coil is short-circuited without any galvanic connection to an external power source The ends of the winding of the movable coil of the electromagnetic actuator is sh...

An injectable composition is described having a higher residual effect with reduced detrimental effects such as pain at injection site, swelling, tissue irritancy or necrosis. The composition contains as active principle a tetracycline compound, either as the free base or a salt thereof with a physiologically acceptable acid, complexed with a substantially equimolar amount of a magnesium compound, and is solubilized in a water miscible solvent system comprising glycerol formal in a an amount of ...

A fast-acting analgesic comprises as analgesic substance ibuprofen in an adjuvant matrix with a porous structure and a density of greater than 1 and up to 2.5 g/cm.sup.3.

A double-acting pump having two cavities, each of which is divided into an operating chamber and a working chamber by means of a respective movable partition wall. Each of the operating and working chambers is provided with a valve-controlled inlet and outlet for a gaseous driving medium and a pump-transported liquid working medium. A movement transmission device extends between the movable partition walls and transmits movement of one partition wall to the other and vice versa. This movement tr...

A valve has a chamber (11) in a housing (10), in which the valve seat (17) is closed by a valve body (19). The valve seat (17) is supported by an actuator (15) which is capable of axially expanding and contracting. In response to an actuating signal the actuator (15) contracts which causes the valve seat (17) to move away from the valve body (19) so rapidly that the valve body (19) is not capable of following, which produces a flow passing through the valve seat (17). The flow pushes the valve b...

A double-acting, weight distributing trailer hitch includes a drawbar assembly and a hitchhead assembly. The drawbar assembly is releasably connected to a tow vehicle and includes a first coupling component at its rearward end. The hitchhead assembly includes a second coupling component and a rearwardly extending drawbar extension, which are pivotably connected along substantially vertical axis by a yoke. The drawbar extension is pivotally connected to the yoke by a cam. The drawbar extension is...