Abstract: The present disclosure generally relates to sealing a bonnet in a valve system. Using novel combinations of seals and gaskets, the present systems can prevent fugitive emissions in a high pressure piping system. For example, in certain embodiments, the present systems combine spring energized seals, O-rings, and PTFE spacers in a bonnet to create a gas-tight seal in a fluid transportation system.

Abstract: A shutter valve for regulating pressure and controlling fluid flow comprising an actuator ring having a plurality of gear teeth, the gear teeth driven by a mating gear or other means. A plurality of obturator pin bosses, each pin boss affixed within an inside circumference of the actuator ring, the pin boss further comprising a hinge pin aperture. The shutter valve further comprises three or more obturator elements, each obturator element defining a petal shape structure including a tongue and groove feature along at least a portion of an outside circumference thereof, and wherein each obturator element is hingedly coupled to a hinge pin aperture of an obturator pin boss. A hook element is located at an apex of said petal shape structure of each obturator element. The shutter value further includes a housing defining a cavity or holding the actuator ring and the three or more obturator elements.

Abstract: A shutter valve for regulating pressure and controlling fluid flow comprising an actuator ring having a plurality of gear teeth, the gear teeth driven by a mating gear or other means. A plurality of obturator pin bosses, each pin boss affixed within an inside circumference of the actuator ring, the pin boss further comprising a hinge pin aperture. The shutter valve further comprises three or more obturator elements, each obturator element defining a petal shape structure including a tongue and groove feature along at least a portion of an outside circumference thereof, and wherein each obturator element is hingedly coupled to a hinge pin aperture of an obturator pin boss. A hook element is located at an apex of said petal shape structure of each obturator element. The shutter value further includes a housing defining a cavity or holding the actuator ring and the three or more obturator elements.

Abstract: An impact borer having a shell and an air drive within the shell. The air drive includes a ram for reciprocation within the shell and a manifold joined to the shell. The manifold defining an inlet passage delivering air to the air drive and an outlet passage exhausting air from the air drive, and a duplicate passage interconnecting the inlet and outlet passages within the manifold.

Abstract: An impact borer, a connector, a method for embedding lines and an improved method for sinking geothermal wells. The impact borer has a shell, which has a longitudinal bore. An anvil closes one end of the bore. A ram is reciprocally slideable within the bore, against and away from the anvil. The ram divides the bore into front, rear, and ram chambers. A director is joined to the shell. The director is monolithic. The director isolates the front and rear chambers in alternation upon reciprocation of the ram. The director defines an inlet passage communicating with the ram chamber and an outlet passage communicating with the rear chamber.

Abstract: An impact borer is disclosed for embedding lines and for sinking geothermal wells. The impact borer has a shell, which has a longitudinal bore. An anvil closes one end of the bore. A ram is reciprocally slideable within the bore, against and away from the anvil. The ram divides the bore into front, rear, and ram chambers. A director is joined to the shell. The director is monolithic. The director isolates the front and rear chambers in alternation upon reciprocation of the ram. The director defines an inlet passage communicating with the ram chamber and an outlet passage communicating with the rear chamber.

Abstract: A precipitation cover which can be easily and inexpensively manufactured comprising a thin, flexible, and elongated sheet of material having a plurality of longitudinal folds and devoid of conventional tailoring. The folds are joined at one end by a seam and are open at the opposite end. The combination of the seam and the folds provides an enclosure with a side opening centered between a plurality of pleats. The side opening of the enclosure may be partially closed by a fastening device. At the opposite side of the enclosure, the pleats have a common border. The pleats are movable from a folded position adjacent the enclosure to an unfolded position closing the side opening and surrounding a person within the enclosure, whereby a person within the enclosure and with the pleats unfolded can be, for all practical purposes, nearly completely sheltered from various forms of precipitation, particularly rain.