Abstract: The invention provides a method and apparatus for holding an open container in one hand while providing unrestricted access to the container. The apparatus comprises a sleeve which is adapted to fit around a user's finger, a means for detachably fastening the apparatus to the container, and a means for connecting the fastening means to the sleeve. In use, the user's finger is inserted into the sleeve while the fastening means is connected to the container. The user then supports the container with the palm and remaining fingers of his hand while the apparatus links the user's finger to the container in such a way that the container is prevented from overbalancing.

Abstract: A microcassette is attached to a conventional animal collar with information concerning the owner of the animal, the owner's location and other pertinent identification concerning the animal. If the animal becomes lost, the finder has merely to play the microcassette to determine the animal's owner. The microcassette is enclosed in a weatherproof holder which is strongly attached to the collar to prevent accidental removal. The microcassette's information may be changed if the owner relocates by simply recording a new identification message.

Abstract: An impulse converter is provided for converting angular impulses into linear impulses. The impulse converter includes a frame with frame members adapted to be oppositely rotated on the frame. The frame members may be rotated by any rotation generating device. Arms and masses are provided on the frame members, the masses are to be accelerated both radially and tangentially by the arms due to the rotation of the frame members. A rack and pinion mass retrieval unit is provided on each of the arms to throw out and/or retrieve the masses back along the length of the arm. The masses are re-accelerated along the arms, and re-retrieved by the rack and pinion mass retrieval unit which converts the radial and tangential accelerations into linear impulses.

Abstract: A prosthetic heart valve assembly of the type having a ring member and pivotable leaflet structure is provided. Each individual leaflet pivots on a pair of peripheral flat ear members that oscillate in mating respective spherical bearing recesses. These recesses are formed in separate bearing blocks that radially seatingly engage mid-wall holes in a rigid, cross-sectionally C-configured ring member. Retaining means holds the bearing blocks in association with the ring member. Edge portions of the ear members and adjacent leaflet edges wipe the recesses and adjacent bearing block surfaces, thereby to avoid blood stagnation and clotting.