Abstract: A portable basketball hoop includes a base; a post comprising a bottom segment, at least one middle segment, and an upper segment. The base has a plurality of openings circumferentially positioned around at least a part the perimeter of the bottom surface. The bottom and at least one middle segment have a body portion with a plurality of locking structure-engaging areas thereby forming pairs of locking structure-engaging areas arranged in at least two rows locking structures engage the locking structure-engaging areas to secure the post segments together. A backboard comprising two outer sections hingedly connected to a middle section which secures to the upper segment of the post.

Abstract: An improved internal electrolyte supply system in a fuel cell stack employs a variety of arrangements of grooves and passages in bipolar plates of the multiplicity of repeating fuel cells to route gravity-assisted flowing electrolyte throughout the stack. The grooves route electrolyte flow along series of first paths which extend horizontally through the cells between the plates thereof. The passages route electrolyte flow along series of second paths which extend vertically through the stack so as to supply electrolyte to the first paths in order to expose the electrolyte to the matrices of the cells. Five different embodiments of the supply system are disclosed. Some embodiments employ wicks in the grooves for facilitating transfer of the electrolyte to the matrices as well as providing support for the matrices. Additionally, the passages of some embodiments by-pass certain of the grooves and supply electrolyte directly to other of the grooves.

Abstract: A poly(vinyliminomethylene) polymer having at least one recurring structural unit of the formula: ##STR1## wherein R and R', which are the same or different, are each hydrogen, a C.sub.1 -C.sub.8 alkyl group or C.sub.3 -C.sub.7 cycloalkyl group which alkyl or cycloalkyl groups are unsubstituted or substituted by lower alkyl or alkoxy groups or which contain up to four non-catenated oxygen atoms, a C.sub.2 -C.sub.8 alkenyl group or a C.sub.5 -C.sub.7 cycloalkenyl group which is unsubstituted or substituted by lower alkyl or alkoxy groups, a phenyl group or naphthyl group which is unsubstituted or substituted by lower alkyl or alkoxy groups, with the proviso that at least one of R and R' be a substituent other than hydrogen; R" is hydrogen; and n has a value such that the weight-average molecular weight is in the range of about 2,000 to 400,000 as determined by gel permeation chromatography.

Abstract: Poly(vinyliminomethylene) homopolymers and copolymers, the homopolymer having the formula:[RR'C.dbd.C(R")N.dbd.C<].sub.nwherein R and R', which are the same or different, are each hydrogen, a C.sub.1 -C.sub.8 alkyl group or a C.sub.3 -C.sub.7 cycloalkyl group which is unsubstituted or substituted by lower alkyl or alkoxy groups, a C.sub.1 -C.sub.8 alkenyl or a C.sub.5 -C.sub.7 cycloalkenyl group which is unsubstituted or substituted by lower alkyl or alkoxy groups, a phenyl group or naphthyl group which is unsubstituted or substituted by lower alkyl or alkoxy groups, with the proviso that at least one of R and R' be a substituent other than hydrogen; R" is hydrogen; and n has a value such that the molecular weight is in the range of about 2,000 to 400,000. The polymers are useful in the manufacture of electroconductive articles.

Abstract: A process for producing hydrogen from formate and water by photogenerating an active formate decomposition catalyst from transition metal carbonyl precursor catalysts at relatively low temperatures and otherwise mild conditions is disclosed. Additionally, this process may be expanded to include the generation of formate from carbon monoxide and hydroxide such that the result is the water gas shift reaction.

Abstract: An exhaust gas muffler for an internal combustion engine. The muffler designed to increase back pressure to the engine within acceptable manufacturer limits and increase the frequency of the sound of the exhaust gas so that the acoustic energy is more easily attenuated when exhausted into the atmosphere.