Abstract: This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.

Abstract: This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.

Abstract: This invention relates to nickel catalysts with alkali ions for homopolymerization and copolymerization.

Abstract: A tool is provided for assistance in removing and installing tires on wheel rims. The tool has a body with a lateral opening for engaging the flange of a wheel rim, preferably opening into a cavity that is wider than the opening such that the tools pivots between stable positions on a fulcrum at which lips of the lateral opening bear against the flange. A roller is mounted on one end of the tool body to exert a downward pressure on the tire sidewall, and a handle protrudes on an end opposite the cavity and fulcrum from the roller. The roller displaces the tire bead from its seat against the rim when removing or installing the bead of a tire that is already at least partly on the rim, or supports the second bead of a tire whose first bead is axially outside of the rim relative to the wheel rotation axis.

Abstract: A tool for removing a tire from a wheel rim includes an elongated body member with a handle at one end and a tool head at the other end. The tool head includes a tire engaging member having at least one tire bead support and terminating in at least two laterally spaced apart tire contact parts. The tool head further includes a rigid, L-shaped wheel rim engaging member terminating in a wheel rim contact part. The wheel rim contact part is sufficiently spaced from the tire engaging member to accept a wheel rim flange therebetween. In a preferred embodiment, each of the at least two tire contact parts and the wheel rim contact part has a rotatable roller.

Abstract: A tool for installing a tire on a wheel rim includes an elongated body member with a handle at one end and a tool head at the other end. The tool head has a tire engaging member terminating in an insertion end and a contact end. The tire engaging member has a back face attached to a connector portion of the elongated body member, and a front face on an opposite side of the tire engaging member. A tire contact part extends above the front face at the contact end. A wheel rim contact member extends from the back face and terminates in a wheel rim contact part. A portion of the tire engaging member between the insertion end and the wheel rim contact member is insertable between a tire bead and a rim flange.

Abstract: A tool for removing a tire from a wheel rim includes an elongated body member with a handle at one end and a tool head at the other end. The tool head includes a tire engaging member terminating in at least two laterally spaced apart tire contact parts, and a rigid, L-shaped wheel rim engaging member terminating in a wheel rim contact part. The wheel rim contact part is sufficiently spaced from the tire engaging member to accept a wheel rim flange therebetween. In a preferred embodiment, each of the at least two tire contact parts and the wheel rim contact part has a rotatable roller.