Abstract: A fire protection system, having spaced outlet heads as water spray sources, the outlet heads having sets of outlet nozzles for providing concentric zones of water spray coverage, either 360.degree. or less than 360.degree. to achieve a generally uniform spray coverage for minimization and more effectiveness of water use. The outlets are adjustable as to both droplet size and direction of the spray dispensed; and remote control of actuation of individual outlet nozzles or of sets thereof further minimizes and makes more effective the water use.

Abstract: A self-cooling can with a double-chamber formed or drawn out of a single slug of material, the outer chamber having a relatively thin wall and the inner chamber having a relatively thicker wall, and each chamber being capped with a cap; and a spring-carried lance is provided for co-operation with the inner chamber cap to achieve a release of pressurized coolant from the inner chamber, achieving cooling by evaporation of the coolant.

Abstract: An effective deep sea oil salvage means, having a large flexible sleeve easily towable to the leak site, with means providing it to be deployed over the leak site in the form of a huge collection chamber, and associated pump and valving for the controlled carry-off of oil and/or gas.

Abstract: A fastening means utilizing, in combination, Velcro stripping and a sealing strip, thus providing that in releasably interconnecting a first panel member to a second panel member, the sealing strip carried between the panel members adjacent the Velcro strip and the co-operating Velcro strip is operative to cause an effective seal between the panel members, and is preferably resiliently deformed by the fastening interconnection of the Velcro stripping components.