Abstract: A targeting system for a bow is disclosed. A laser rangefinder is offset from a designated pin on the bow sight such that a theoretical line of sight for the designated pin intersects with a rangefinder laser beam emitted by the laser rangefinder at a preset distance. An adjustment mechanism is provided that permits the position of the laser rangefinder relative to the bow to be adjusted such that the rangefinder laser beam and a user's actual line of sight along the designated pin intersect at a target located at the preset distant. The designated pin permits the user to aim the laser rangefinder at a selected target and adjust an elevation of the bow to an angle corresponding at least approximately to a range to the selected target displayed by the laser rangefinder. In one embodiment, the rangefinder laser and the bow sight form a unitary bow sight assembly.

Abstract: A relief valve assembly includes a valve element mounted for movement along a valve axis between a sealing position and a relief position. A spring arm engaged with the valve element urges the valve element toward the sealing position. The spring arm has a free end engaged upon a cam surface. Movement of the valve element between the sealing and relief positions causes movement of the free end of the spring arm along the cam surface. Movement of the valve element toward the relief position causes movement of the free end of the spring arm along the cam surface increasing spacing of the free end of the spring arm from the valve axis and increasing spring force of the free end of the spring arm upon the cam surface. This maintains a substantially constant, predetermined spring force component urging the valve element toward the sealed position.

Abstract: The invention provides an improved system of plumbing for transportation conveyances including over-the-road, domestic vehicles, railway cars and yachts. The system includes a compact, unitary water distribution manifold for distributing water from an external supply of water. The manifold defines a system of conduits having inlets and outlets for connecting the conduits alternatively to a pressurized external water supply, or, where the external supply is not pressurized, to a pump, with a valve for draining water from the manifold and connected piping, e.g. for cold weather storage.