Abstract: A method for applying a first elongated strip of material over a second elongated strip of material wherein the second strip of material includes a pair of marginal edges on opposite sides of a secondary flow path for an irrigation drip tape, includes (a) applying heat to the second strip along the marginal edges while simultaneously shielding at least a center portion of the secondary flow path from the heat; and (b) pressing the first elongated strip over the second elongated strip to thereby heat seal the second elongated strip to the first elongated strip along the marginal edges. A related drip tape product includes a flexible tubular member having an interior defining a primary flow path, and a flow path strip bonded to an interior surface of the tubular member formed with a plurality of secondary flow paths.

Abstract: A process for installing a plastic connector bushing in a plastic water supply tube includes a) cutting a hole of predetermined diameter in the water supply tube; b) locating the connector bushing in the hole, the connector bushing having an upper radial flange, and wherein a metal washer is interposed between an underside of the radial flange and an area of the water supply tube surrounding the hole; and c) applying energy to the metal washer sufficient to cause melting of respective facing surface portions of the radial flange and water supply tube to thereby form a bonded joint between the connector bushing and the water supply tube. A corresponding water supply tube or riser assembly includes an irrigation tube for supplying water to at least one supply line or riser assembly, the irrigation tube having at least one hole formed therein with a connector bushing inserted within the hole.

Abstract: An actuator for adjustable stator vanes in a gas turbine engine. A torque tube is rotatable about its axis, and supports devises which connect to links. The links are connected to rings, and rotate the rings when the torque tube rotates, thereby adjusting stator vanes connected to the rings. A linear actuator, having a motion axis parallel to the torque tube, drives the torque tube, through a linear-rotary convertor. The invention occupies less space on the engine, and requires no adjustment of the linear-rotary convertor after installation.

Abstract: An actuator for adjustable stator vanes in a gas turbine engine. A torque tube is rotatable about its axis, and supports devises which connect to links. The links are connected to rings, and rotate the rings when the torque tube rotates, thereby adjusting stator vanes connected to the rings. A linear actuator, having a motion axis parallel to the torque tube, drives the torque tube, through a linear-rotary convertor. The invention occupies less space on the engine, and requires no adjustment of the linear-rotary convertor after installation.

Abstract: An infrared suppressor system for a gas turbine engine is provided for suppressing infrared radiation associated with the hot metal parts of the engine and with the hot exhaust gases exhausted from the engine. The system features a unique arrangement of multiple baffles that are connected together as a single baffle module. The baffle arrangement permits mixing of hot and cool gas flows while eliminating line-of-sight infrared radiation in an axially compact suppressor. The baffles are additionally linked together into a single insertable baffle module that permits removal of the baffle module when infrared suppression is unnecessary.