Abstract: An upper body exercise device includes a central tube supported at a first height by at least two legs. A pair of wings is hingedly connected to the central tube. Each wing includes a pair of parallel arcuate rails, each rail having an outer end opposite the central tube, and each rail having a nadir at a second height lower than the first height. A hand slider is slidably supported on top of the pair of parallel arcuate rails of each of the pair of wings. Each hand slider includes a grip and a friction mitigation unit connected to the grip. Each hand slider is slidable along the pair of parallel arcuate rails between the central tube and the outer ends of the pair of parallel arcuate rails. The wings can be rotated about the central tube between an exercise configuration and a storage configuration.

Abstract: The present invention is related to the use of specific cyclic and/or polymeric aryl-phosphines as flame retardants and to a method for reducing the flammability of organic material by incorporating into the material these specific cyclic and/or polymeric phosphines. Moreover, the invention is related to a polymeric composition containing a polymeric material and at least one of the specific cyclic and/or polymeric phosphines in an amount of from 1 to 15% by weight, based on the weight of the polymeric material. The invention also relates to a composition comprising at least one of the specific cyclic and/or polymeric phosphines and at least one polymerizable monomer.

Abstract: The present invention is related to the use of specific cyclic and/or polymeric aryl-phosphines as flame retardants and to a method for reducing the flammability of organic material by incorporating into the material these specific cyclic and/or polymeric phosphines. Moreover, the invention is related to a polymeric composition containing a polymeric material and at least one of the specific cyclic and/or polymeric phosphines in an amount of from 1 to 15% by weight, based on the weight of the polymeric material. The invention also relates to a composition comprising at least one of the specific cyclic and/or polymeric phosphines and at least one polymerizable monomer.