Abstract: An electrical receptacle having a body member, the body member having at least one blade-engaging member with a first and second portion spaced apart one another, a bridge portion, and at least one side structure spaced between the first and second portion, with at least one electrical lead coupled to the body member and at least one protrusion located on the body member that releasably engages and disengages a corresponding blade member absent the presence of an externally actuated release mechanism. Also including the electrical connector system having a male plug member having at least one blade with at least one recess. A female connector having at least one blade engaging member.

Abstract: The present invention relates to a rotary piston system mounted within an engine or a pump and characterized in that a piston moves inside a housing, thus reducing or enlarging closed spaces. The piston is an oloid element rotating about its axis. The internal space consists of two identical shells contiguously assembled along the equatorial planes thereof. The space defined by the shells inside the housing has an enveloping surface resulting from the biaxial rotation of the oloid element, the maximum diameter of which corresponds to its longitudinal profile.

Abstract: A stent, in particular a coronary stent, includes a thin-walled, hollow-cylindrical base body of an X-ray transparent material, the surface area of which has an open-worded, net-shaped design owing to recesses. The stent has at least one X-ray opaque element or region, wherein the X-ray opaque element or the X-ray opaque region extends essentially in a linear direction over at least a portion of the circumference of the stent located at least one end region of the stent while the rest of the stent remains X-ray transparent.