Abstract: A retaining frame for components of a personal computer comprises a horizontal portion, with a first section and a second section connected together; and a vertical portion attached substantially perpendicular to the first and second sections. The first section is adapted to secure a disk drive holder, and has at least one leg extending downward to support the retaining frame. The second section is adapted to secure a power supply, and has at least one leg extending downward to support the retaining frame. The vertical portion comprises a speaker seat and a ventilation fan seat at a central location near the first section, and speaker securing rib and fan securing device, respectively, for fastening a speaker and a ventilation fan. The retaining frame with a disk drive holder, power supply, speaker and the ventilation fan mounted thereon is disposed on the lower portion of a computer case, and secured inside the case by a vertical force exerted on the retaining frame by an upper portion of the computer case.

Abstract: Porous ceramic composition comprises 24-45 wt % of gairome, 25-45 wt % of chamotte, 2-10 wt % of low thermal expansivity component, 2-10 wt % of mineralizing agents, and 15-30 wt % of at least two kinds of organic components which provide porosity. The porous ceramic radiation plate is produced by sintering the composition, and the end result is a product that is high in quality and has an efficient thermal radiation transfer.

Abstract: A flipper assembly comprises a rectangular, grid-shaped frame with a plurality of longitudinal strips spacedly disposed therein, a plurality of danglable leaves, and a plurality of transverse crossbars. Each of the crossbar is disposed under the frame spacedly and attached to an upper surface of a leaf respectively. Two pairs of straps are disposed at two opposite sides of the frame respectively. The total weight of the largest sized flipper assembly is only 710 grams. Another flipper assembly comprises a sandal, a rectangular frame with a plurality of longitudinal strips spacedly disposed therein, a plurality of danglable leaves, and a plurality of transverse crossbars. Each of the crossbar is disposed under the frame spacedly and attached to an upper portion of a leaf respectively. A strap is disposed on the upper surface of the sandal.

Abstract: A sucking hole structure for an aluminum foil beverage container, having an oval peeling line punched on the outmost layer of the container and a round peeling line punched on the middle layer of the container, the parts surrounded by the oval peeling line and the round peeling line possible to be peeled off together to become a sucking hole.

Abstract: A crankshaft mounted secondary shaking force balancer for multicylinder engines and the like in which eccentrically rotating balance weights carried on the crankshaft and arranged for substantial primary balance are combined in oppositely rotating groups of weights driven by stationary ring or sun gears and associated planetary gears to provide coacting rotating forces that combine to apply directly to the crankshaft a secondary shaking force reciprocating at twice crankshaft speed and available to balance equivalent oppositely directed shaking forces developed by the crankshaft connected moving components of the engine.

Abstract: An even firing 90.degree. V6 four stroke cycle engine is provided with a single line balancer having a combination of primary balance weights and secondary Oldham coupling balancers rotating opposite crankshaft rotation which, combined with crankshaft counterweights, provide complete offsetting of the engine primary rotating unbalance couple together with offsetting of a large portion of the engine secondary rotating unbalance couple and leaving a small residual secondary unbalance couple for absorption by the engine mounting system.

Abstract: A hybrid straight and curved guide phase change coupling device in which end members rotatable on spaced parallel axes in opposed spaced relation are connected by an intermediate member having guide means constraining lateral motion of the intermediate member to a straight diametrical path with respect to one of the end members and to a curved path with respect to the other of the end members whereby a cyclic phase change or velocity ratio variation is provided during rotation of the two end members at identical overall cyclic speeds.

Abstract: A half speed balancer for unbalanced mechanisms such as internal combustion engines comprises an Oldham coupling device with a central coupler that orbits in a curved (usually circular) path at a frequency twice the speed of the coupling rotation. The balancer substitutes for an equivalent rotating eccentric weight when driven at only half the rotational speed thus causing reduced bearing friction and noise and may be used in multiples like eccentric weights to offset various unbalance conditions.