Abstract: A combined mixing and injecting device includes a housing having a pressure chamber and containing two plungers with one being sleeved around the other. The plungers have top ends formed with pistons which respectively extend into upper and lower chambers of the pressure chamber to be operated by a fluid, and bottom ends with tapering end faces extending into a bottom space below the lower chamber to perform a camming action. A mixer disposed below the housing includes a mixing chamber and valve units having valve stems respectively controlled by actuating elements which in turn are managed by the camming action of the plungers. The valve stems are connected to slide seats slidable along radial directions and spaced apart around the housing. The actuating elements actuate the slide seats so that the valve stems are operated to open or close inlet holes communicated with the mixing chamber.

Abstract: A combined mixing and injecting device includes a housing having a pressure chamber and containing two plungers with one being sleeved around the other. The plungers have top ends formed with pistons which respectively extend into upper and lower chambers of the pressure chamber to be operated by a fluid, and bottom ends with tapering end faces extending into a bottom space below the lower chamber to perform a camming action. A mixer disposed below the housing includes a mixing chamber and valve units having valve stems respectively controlled by actuating elements which in turn are managed by the camming action of the plungers. The valve stems are connected to slide seats slidable along radial directions and spaced apart around the housing. The actuating elements actuate the slide seats so that the valve stems are operated to open or close inlet holes communicated with the mixing chamber.

Abstract: An orthopedic sole structure includes an insole made from a first polymeric material with a first stiffness, and an insert made from a second polymeric material with a second stiffness. The insole includes a metatarsals support portion, a tarsals support portion and an intermediate arch support portion interposed therebetween. The intermediate arch support portion has an upper surface and a lower surface that defines a recess to receive the insert therein in such a manner that the upper surface thereof is lifted upward to permit resting of an intermediate arch portion of a user's foot when the foot is disposed on the orthopedic sole structure.

Abstract: A process for manufacturing an ethylene vinyl acetate (EVA) sole that involves weighing molding compounds for manufacturing the sole. The molding compounds include, by weight, 65-75% of ethylene vinyl acetate pellets, 3-5% of blowing agents, 20-30% of fillers, and 1-2% of crosslinking agents. The molded compounds are mixed, and extruded by means of a twin screw extruder so as to form a web of unfoamed extruded output. The web is cut into sheets. At least one of the sheets is placed into a first mold unit, which is heated and pressurized so as to form a rough foamed sole. The rough foamed sole is placed into a second mold unit, which is heated, pressurized, and cooled so as to form an embossed sole with a predetermined pattern. The embossed sole is trimmed so as to form a finished ethylene vinyl acetate sole.