Abstract: The present invention provides rotenone analogs and methods of making and using them. Labeled with single photon and positron emitting isotopes, the rotenone analogs of the present invention are useful in, for example, clinical imaging applications as tracers to measure cardiac blood flow and detect regions of ischemia.

Abstract: A human torso phantom and its construction, wherein the phantom mimics respiratory and cardiac cycles in a human allowing acquisition of medical imaging data under conditions simulating patient cardiac and respiratory motion.

Abstract: A human torso phantom and its construction, wherein the phantom mimics respiratory and cardiac cycles in a human allowing acquisition of medical imaging data under conditions simulating patient cardiac and respiratory motion.

Abstract: The present invention provides rotenone analogs and methods of making and using them. Labeled with single photon and positron emitting isotopes, the rotenone analogs of the present invention are useful in, for example, clinical imaging applications as tracers to measure cardiac blood flow and detect regions of ischemia.

Abstract: A video cassette vending machine has a plurality of storage positions which are not user-accessible and a vend position which is user-accessible. A carrier unit is provided for carrying a selected video cassette between one of the storage positons and the vend position. a positioning unit is provided for positioning the carrier unit proximate to a selected storage position in response to user input. An engaging unit fixed to the carrier unit is provided for engaging and disengaging a selected video cassette. A reader unit is provided for identifying a selected video cassette. A microprocessor memory system is provided for recording and processing information about the contents of the storage positions and the identity of the selected video cassette.

Abstract: An improved driving mechanism particularly adapted for use with pick-and-place units wherein a pair of jaws are pivotally supported from a housing and movable towards and away from each other. In this manner objects may be grasped by the jaws or extension thereof and moved from one place to another and then released by reason of the aforementioned relative jaw movement. The jaws cooperatively form a socket in which a generally cylindrical bushing is mounted at opposite ends thereof in a drive member which in turn is adapted to reciprocate back and forth with respect to the housing so as to open and close the jaws. One of the jaws at the upper head portion thereof includes a laterally movable pin which acts to limit the relative movement of the jaws towards and away from each other.

Abstract: A pick and place machine operable to transfer a part from a loading station to a horizontally removed delivery station. Jaws for grasping and releasing the parts are mounted on the first of a pair of interrelated members, said first member being vertically slidable in relationship to the second member and both of said members horizontally slidable with respect to a supporting housing so as to accomplish part movement in an X-Y direction, i.e., an inverted U-shape path. The travel which such first member assumes is controlled by a follower attached thereto and in contact with a cam path defined within the housing and disposed adjacent the members. Motion imparted to the follower by a crank arm mounted for reciprocal motion as by an air cylinder or the like.