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A constant flow concrete pump having a number of hydraulically actuated concrete pump assemblies connected to inlet openings in one wall of a semi-fluid concrete hopper which has a single discharge opening in the opposite wall, and a valve mounted in the hopper and having an inlet of sufficient length to encompass at least two of the inlet openings in the hopper wall, relative movement is
This application describes devices (100, 200, 300, 400, 500, 600) to reduce a vehicle's speed and/or reduce a machine's RPMs and/or stop any piece of equipment as well as guide it if mobile through automated controls (700). The devices (100, 200, 300, 400, 500, 600) function to slow down, and guide and/or control if necessary, stop completely, and secure in a safe stationary position.
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To compensate for the differential flow, Jalayeri et al. [14,16] utilized an On/Off solenoid valve and a check valve, while Altare and Vacca used a shuttle valve. Using a similar concept, Pugi et al. [ 25 ] designed a new pump-controlled circuit and implemented their design into a hybrid road service vehicle.
VR12, Transmitter - Shuttle Valve Series. Series VR1210/1200 shuttle valve is a 3 ported valve with one output and 2 pneumatic signal and input ports. Output is always supplied by high pressure inlet. The VR12**F series are interrupters for control of air pressure signal system lines. Piping is possible in any position and the one-touch
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Shuttle valve for concrete pump . United States Patent 6443718 . Abstract: A shuttle valve for use in a pumping apparatus for pumping concrete or the like. View Patent Images: Download PDF 6443718 . US Patent References: 5746247 There is constant wear and degradation that is only corrected by new parts or by continuous mechanical
To permit smooth performance of both of an operation requiring a high pressure and an operation desired to produce a pressure at a suppressed level, a shuttle block positioned between pilot operating units and flow control valves and pump regulators is arranged in association with shuttle valves, which select maximum pressures of groups of operation signal pressures produced by the pilot
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A second input 50 is connected to a shuttle valve 64, with shuttle valve 64 also fluidly connected to the lift and lower valve 15, the two-position four-way valve 26, and a drain line 58. When no pilot pressure or force is applied to either the first input 46 or the second input 50, the two-position four-way valve …
Active DDS minimizes percussion energy loss and, by optimizing the overall feed force, reduce hole deviation. An additional benefit is greatly improved life of drilling accessories. (U.S. PATENT No.5,896,937) Compact Valve Design A compact shuttle valve minimizes loss of oil pressure and maintains total power output of the drifter.
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Fig: No: 6.4 Shuttle Valve Since the ball is shuttled to one side (or) the other side of the valve depending on which side of the ball has the greater pressure, it is known as shuttle valve. This shuttle valve is used for safety purpose in the event that the main pump can no longer provide hydraulic power to operate emergency devices; the
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stationary concrete object at speed. The H-Track's unique valve and reservoir design gives it the ability to cushion these blows and continue operating without issue. And the optional ability to operate in temperatures of -40°F makes it a perfect fit for even the coldest climates. Mower deck lifts are typically where electric actuators shine.
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