Abstract: A flowable silicone-polyolefin composition is disclosed. The silicone-polyolefin composition comprises (A) a polysiloxane and (B) a functionalized polyolefin dispersed in the polysiloxane (A). The polysiloxane (A) comprises an average per molecule of at least one functional group X, and the functionalized polyolefin (B) comprises an average per molecule of at least one functional group Y that is reactable with the functional group X of the polysiloxane (A) to form a bond therebetween. A curable composition comprising the flowable silicone-polyolefin composition, a cured product of the curable composition, and methods of preparing the flowable silicone-polyolefin composition, curable composition, and cured product are also disclosed.

Abstract: A catalytic material includes microporous zeolites supported on a mesoporous inorganic oxide support. The microporous zeolite can include zeolite Beta, zeolite Y (including “ultra stable Y”—USY), mordenite, Zeolite L, ZSM-5, ZSM-11, ZSM-12, ZSM-20, Theta-1, ZSM-23, ZSM-34, ZSM-35, ZSM-48, SSZ-32, PSH-3, MCM-22, MCM-49, MCM-56, ITQ-1, ITQ-2, ITQ-4, ITQ-21, SAPO-5, SAPO-11, SAPO-37, Breck-6, ALPO4-5, etc. The mesoporous inorganic oxide can be e.g., silica or silicate. The catalytic material can be further modified by introducing some metals e.g. aluminum, titanium, molybdenum, nickel, cobalt, iron, tungsten, palladium and platinum. It can be used as catalysts for acylation, alkylation, dimerization, oligomerization, polymerization, hydrogenation, dehydrogenation, aromatization, isomerization, hydrotreating, catalytic cracking and hydrocracking reactions.

Abstract: A surgical instrument is provided having a tubular shaft with working elements arranged at its distal end, at least one of which may be spread apart. The working elements engage through an actuator element with a handle arranged at the proximal end of the shaft for opening and closing the working elements. A continuous hollow channel is provided in the interior of the instrument, into which at least one additional instrument may be inserted. The hollow channel preferably has a cross section corresponding to the inner clearance diameter of the tubular shaft. The working elements are configured such that they do not extend into the cross section of the hollow channel either in opened or in closed condition.

Abstract: Described is a grip part of an endoscopic instrument with at least a movable control element for mechanical guidance of a tool unit mounted on the distal end of the shaft of the endoscopic instrument and a main body. The invention is distinguished in that the main body has a largely symmetrical shape which is ergonomically adapted to the human hand such that the endoscopic instrument can be encircled at least partially by the palm of a hand balled into a fist and that the operating element is movable relative to the main body.

Abstract: A simulator system in which a visual display assembly is arranged to present an image to be viewed on a display surface and a viewing station is positioned in front of the display surface such that a person looking from a predetermined eyepoint defined within the viewing station can see the display surface through a viewing window defined by the viewing station. The viewing station is displaceable relative to the visual display assembly between first and second positions to adjust the position of the display surface relative to the viewing window when viewed from the eyepoint. During displacement of the viewing station between the two positions, the viewing station is rotated about the eyepoint. The actuator is arranged such that the rate of rotation of the viewing station increases with distance from the first and second positions to a maximum when the viewing station is in an intermediate position.

Abstract: A medical manipulating device (1), in particular, for endoscopic applications, havinga medical instrument (3) disposed at the distal end,a grip (2) disposed at the proximal end, the grip (2) being provided with a grasping part (4) which can be held by hand, the grasping part (4) being provided with actuating elements which can be operated with the fingers, anda shank part (5), which connects the grip (2) to the instrument (3), and which is provided with transmission elements which transmit actuation of the actuating elements to the medical instrument (3).

Abstract: An actuator assembly comprising a pair of interconnected extensible actuators defining two sides of a triangle structure, and a linkage constrained to move with the actuators such that differences in extension of the actuators cause a change in position of the linkage. Changes in position of the linkage are detected to enable relative actuator extensions to be monitored.