Abstract: A drive transmission apparatus includes a dog clutch including a dog gear assembly and a dog ring, which are configured for rotation and relative axial adjustment between an engaged condition in which torque can be transmitted and a disengaged condition. The dog gear assembly includes a dog gear, a retractable dog assembly configured for movement relative to the dog gear between an extended position and a retracted position, and a control element that controls movement of the retractable dog assembly. The dog ring includes a plurality of first dogs and the dog gear assembly includes a plurality of second dogs that engage the first dogs in the engaged condition, and that are disengaged from the first dogs in the disengaged condition. The second dogs include a plurality of fixed dogs that are mounted on the dog gear and a plurality of retractable dogs of the retractable dog assembly.

Abstract: A drive transmission apparatus includes a dog clutch including a dog gear assembly and a dog ring, which are configured for rotation about a rotational axis and relative axial adjustment between an engaged condition in which torque can be transmitted between the dog gear assembly and the dog ring, and a disengaged condition in which torque cannot be transmitted. The dog gear assembly includes a dog gear, a retractable dog assembly configured for movement relative to the dog gear between an extended position and a retracted position, and a control element that controls movement of the retractable dog assembly. The dog ring includes a plurality of first dogs and the dog gear assembly includes a plurality of second dogs that engage the first dogs in the engaged condition, and that are disengaged from the first dogs in the disengaged condition. The second dogs include a plurality of fixed dogs that are mounted on the dog gear and a plurality of retractable dogs of the retractable dog assembly.

Abstract: A network recording cache prioritises delivery of content to a household based on a combination of viewing and recording requests. Content for viewing may be prioritised over content to be recorded. Cached content (e.g., for trick play) for content being viewed may be prioritised over recordings. In this way, the effect of limited bandwidth on the ability of the user to view and record requested content is reduced.

Abstract: A climate control system comprising a base, a mast extending from the base, a fan mounted on the mast for producing an airflow, the airflow being directed by an adjustable diffuser, and a fog introduction system connected to a water source and mounted adjacent to the fan. The fog introduction system introduces fog into the airflow. The fog introduction system comprises at least one fog ring and the water source may further comprise a pump. The climate control system may further comprising a heat source. The fog ring may comprise nozzles, and the nozzle diameter may be in the range of 0.002 to 0.02 inches.

Abstract: The present invention provides nucleic acid molecules comprising expressible sequences, including reporter genes and therapeutic genes, whose expression is dependent on the presence of both HIV Tat and Rev proteins. Further provided are methods for detecting HIV, method for identifying compounds that can inhibit HIV infection and/or gene expression, methods for killing HIV-infected cells, and methods of treating HIV-infected subjects.

Abstract: The present invention relates, in general, to a method of identifying ligands and antagonists of ligands. In particular, the present invention relates to a method of identifying ligands and antagonists of ligands which bind to cloned G.sub.8 - or G.sub.1 -coupled receptors. The present invention also relates to a cell that comprises a recombinant cyclic AMP sensitive reporter construct.