Abstract:
According to one embodiment, a liquid dispensing system includes a pressure chamber comprising a liquid space and a vapor space, and a liquid dispenser. A first and second orifice located in a bottom portion wall of the pressure chamber and each coupled to a vapor conduit extending into the vapor space of the pressure chamber form passageways between the first and second orifice and the vapor space. A third orifice of equal to or greater than approximately two inches diameter is located in the bottom portion wall of the pressure chamber. The third orifice is coupled to a liquid supply inlet port of the liquid dispenser; the second orifice is coupled to a liquid bypass port of the liquid supply pipe; and the first orifice is coupled to a vapor release port of the liquid dispenser.
Abstract:
A brake pulsing apparatus for use in vehicles having vacuum hydraulic, pneumatic or electric brake systems. The brake pulsing apparatus includes a solenoid valve, for vacuum hydraulic and pneumatic brake systems, or a relay, for electric brake systems, mounted in a vacuum, pressurized air or electrical line that transmits a brake signal to a brake assembly of the vehicle when the brake system is engaged, a pendulum and proximity switch that sense deceleration of the vehicle, and a timer relay connected between the proximity switch and the solenoid valve or relay to repetitively close the valve or open contacts of the relay when the brake system is engaged. The pendulum and timer relay are adjustable to adapt the brake pulsing apparatus to the type of vehicle in which the apparatus is used. In vacuum hydraulic or pneumatic systems, the solenoid valve repetitively admits air into the vacuum line or exhausts air from the pressurized air line during vehicle braking and a cup, having an orifice through its closed end, can be mounted in a port of the valve to admit or exhaust air at a controlled rate. A second solenoid valve or relay can be mounted in the brake system of a trailer towed by a tractor and operated by the timer relay to synchronously pulse brakes of the trailer with pulsation of brakes of the tractor.
Abstract:
A drip irrigation tape consists of a strip of flexible material having an elongated, indented channel formed along a first side edge, the channel being of serpentine configuration, the strip being folded lengthwise so that the side edges overlap to form a first conduit, and the opposite side edges being joined together at least along spaced seal lines along opposite edges of the channel to define a secondary conduit. Inlets and outlets are provided along the length of the channel. A method for manufacturing the tape includes the steps of forming the indented channel on a mandrel before sealing the overlapping edges of the strip together by heat sealing or ultrasonic welding.
Abstract:
A check valve assembly has a valve seat for positioning in a passageway between a water supply and an outlet device such as a sprinkler head or a pipe section. A disc valve is located on the water supply side of the valve seat, and a separate actuator is movably mounted on the opposite side of the seat for movement between an operative position extending through the valve seat to hold the valve in the open position, and an inoperative, retracted position. The disc valve is moved by the actuator into the open position when the sprinkler head is located at the outlet. Release or removal of the actuator as a result of removal of the sprinkler head or other outlet device will allow fluid pressure at the fluid supply end of the passageway to urge the valve into the closed position.
Abstract:
A channeled shaft check valve assembly includes a conduit with an internal valve seat with a central opening. An actuating member is contained inside the conduit between an outlet fixture and the valve seat. A valve member mounted within the sleeve includes a disc on the opposite side of the valve seat from the outlet end of the conduit and a channeled shaft extending outward from the center of the disc and through the central opening in the internal valve seat. The opposite end of the channeled shaft may also have a disc mounted thereto, allowing for a three position valve. The valve is urged closed under pressure unless an outlet fixture urges the valve open allowing fluid flow along the channeled shaft and through the central opening in the valve seat. In a two disc valve member, the valve may have two closed positions and one open position.
Abstract:
A drip irrigation tape is formed from a strip of flexible material having a series of spaced indented grooves of serpentine shape extending along one side edge, the strip being folded with its opposite side edges overlapping and sealed together on opposite sides of the grooves to form a main conduit within the folded strip and a series of secondary conduits along the grooves. Breaks in the seal form inlets between the main conduit and each secondary conduit, and raised outlet ports connect the secondary conduit to the exterior of the tape. The grooves each have a series of elongated chambers offset alternately on opposite sides of the grooved region and interconnected by orifices of smaller dimensions than the chambers. An apparatus for forming the tape includes a shaping drum with channels connected via suction ports to a vacuum source for pulling the strip material into the channels to form the grooves, the vacuum connection being arranged to direct the vacuum only to the region of the drum over which the strip is passing.
Abstract:
A plastic drip irragation tape of unitary construction is disclosed that employs a water impervious polyethylene film folded lengthwise with the edges overlapped and joined together in a heat sealed seam to form a flat flexible conduit. A narrow preformed groove along one edge defines a small secondary conduit within the seam that resists deformation to maintain a consistent controlled drip rate along the tape. Breaks in the seam at regular intervals form inlets through which irrigation water flows from the main conduit into the secondary conduit and outlets through which the water is emitted from the secondary conduit to the soil.
Abstract:
According to one embodiment, a liquid dispensing system includes a liquid storage tank comprising a pressure chamber with a liquid space and a vapor space. The liquid storage tank further comprises a liquid bypass riser comprising a first end in communication with the vapor space, and a second end exterior to the pressure chamber. The liquid bypass riser forms a first passageway to the vapor space for returning liquid to the pressure chamber. The liquid storage tank further comprises a vapor return riser located within an interior portion of the liquid bypass riser. The vapor return riser comprises a first end located in the vapor space and a second end exterior to the pressure chamber. It forms a second passageway to the vapor space of the pressure chamber. The second passageway prevents liquid in the first passageway from entering the second passageway.
Abstract:
A single piece pulsed flow wing assembly method providing for horizontal wing manufacture is accomplished using synchronized automated vehicles guided in a predetermined manner to move and, locate wing structure in a plurality of assembly positions. Multi-axis assembly positioning systems (MAPS) are used at each assembly position to support and index components in the wing structure and determinant assembly techniques are used for indexing of the components. Modular automated manufacturing processes employing magnetic assembly clamping, drilling, fastener insertion, and sealant application are employed.
Abstract:
A channeled shaft check valve assembly includes a conduit with an internal valve seat with a central opening. An actuating member is contained inside the conduit between an outlet fixture and the valve seat. A valve member mounted within the sleeve includes a disc on the opposite side of the valve seat from the outlet end of the conduit and a channeled shaft extending outward from the center of the disc and through the central opening in the internal valve seat. The opposite end of the channeled shaft may also have a disc mounted thereto, allowing for a three position valve. The valve is urged closed under pressure unless an outlet fixture urges the valve open allowing fluid flow along the channeled shaft and through the central opening in the valve seat. In a two disc valve member, the valve may have two closed positions and one open position.