Abstract: A specialized underwater pistol with ammunition includes one or more of barrel expansions to shape the pattern of the plural shot pieces expelled from a pistol cartridge when the pistol is fired, an aerodynamic trigger cam or spur, flushing ports, a wide trigger pull, a wide hammer spur, a cartridge shot carrier with a frangible end, and cartridge sealant.

Abstract: A specialized underwater pistol with ammunition includes one or more of barrel expansions to shape the pattern of the plural shot pieces expelled from a pistol cartridge when the pistol is fired, an aerodynamic trigger cam or spur, flushing ports, a wide trigger pull, a wide hammer spur, a cartridge shot carrier with a frangible end, and cartridge sealant.

Abstract: A specialized underwater pistol with ammunition includes one or more of barrel expansions to shape the pattern of the plural shot pieces expelled from a pistol cartridge when the pistol is fired, an aerodynamic trigger cam or spur, flushing ports, a wide trigger pull, a wide hammer spur, a cartridge shot carrier with a frangible end, and cartridge sealant.

Abstract: A specialized underwater pistol with ammunition includes one or more of barrel expansions to shape the pattern of the plural shot pieces expelled from a pistol cartridge when the pistol is fired, an aerodynamic trigger cam or spur, flushing ports, a wide trigger pull, a wide hammer spur, a cartridge shot carrier with a frangible end, and cartridge sealant.

Abstract: Axially compressible, self-sealing, high bandwidth F-connectors for conventional hand tools for interconnection with coaxial cable. An internal, dual segment sealing grommet activated by compression provides a seal. Each connector has a rigid nut that is rotatably secured to a, tubular body. A rigid, conductive post coaxially extends through the connector. A post barbed end penetrates the cable within the connector. A tubular, metallic end cap is slidably fitted to a body shank, and thereafter forcibly compressed lengthwise during installation. The end cap has a ring groove for seating the enhanced grommet. The end cap can irreversibly assume any position, being held by end cap teeth. A tactile system comprising external convex projections on the body complemented by a resilient, external O-ring on the end cap aids installers who can properly position connectors with the sense of touch.

Abstract: Axially compressible, self-sealing, high bandwidth F-connectors for conventional hand tools for interconnection with coaxial cable. An internal, dual segment sealing grommet activated by compression provides a seal. Each connector has a rigid nut that is rotatably secured to a, tubular body. A rigid, conductive post coaxially extends through the connector. A post barbed end penetrates the cable within the connector. A tubular, metallic end cap is slidably fitted to a body shank, and thereafter forcibly compressed lengthwise during installation. The end cap has a ring groove for seating the enhanced grommet. The end cap can irreversibly assume any position, being held by end cap teeth. A tactile system comprising external convex projections on the body complemented by a resilient, external O-ring on the end cap aids installers who can properly position connectors with the sense of touch.

Abstract: A heated microwave antenna ideal for the direct broadcast satellite service, and heated conversion kits for retrofitting to conventional antennas. Antennas modified in accordance with the invention are highly weather resistant, as the dish is warmed to avoid snow and ice accumulation to prevent signal degradation. The heated microwave antenna mounts upon a mast that is bracketed to a satisfactory support. The dish focuses microwave signals upon a low noise broad band amplifier (LNB). The dish comprises multiple laminations from internal elements that are sandwiched together, and exhibits significant mechanical strength and substantial weather resistance. The preferred dish comprises a metallic reflector, a heated grid, an insulation layer, and a backing plate nested together to form a composite, laminated unit. The grid comprises a resistive heater element activated by a temperature-responsive thermostat. A concentric trim ring surrounding the dish periphery waterproofs the antenna.