Abstract: A hose restraint system includes a base, a key, and a flexible connector. The flexible connector is secured at a proximal end to the key and at a distal end to a flexible hose. The key is configured to releasably engage the base. The base includes a sensor that provides a control signal to a control system indicating whether the key is in the locked position. The control system provides an operational interlock to prevent fluid flow in the flexible hose if the key is not in the locked position.

Abstract: Methods and systems for operating an absorber-replenisher to supply fluid to a low pressure circuit in a hydrostatic circuit or recover surplus energy usually wasted across a pressure relief valve in the low pressure side by intensifying it for use in a high pressure circuit in the hydrostatic circuit. The absorber-replenisher 1) allows fluid flow through a high pressure motor-pump section of the absorber-replenisher from a high pressure circuit source causing a low pressure motor-pump section to turn providing additional fluid flow to the hydrostatic circuit, or 2) allows increased fluid flow from the low pressure portion of the hydrostatic circuit to increase pressure until the higher pressure induces a higher net torque of the low pressure motor-pump section to reverse the direction of the absorber-replenisher and pump fluid flow into a high pressure circuit through the high pressure motor-pump section.

Abstract: Methods and systems for operating a cylinder lock valve to control fluid flow to a hydraulic cylinder operating a drilling rig sub-system. The lock valve 1) allows fluid flow through the valve if pressure on a main and pilot area overcomes a closing spring force on the valve, or 2) blocks flow through the valve if a loss in charge pressure in the main and pilot area falls below the closing spring force on the valve.

Abstract: Methods and systems for storing kinetic energy in a fluid-base power circuit. A regenerative control valve manifold diverts fluid flow from a hydraulic device performing a first operation into an accumulator. The accumulator stores a fluid volume sufficient to perform a second operation. The regenerative control valve manifold connects the accumulator to the power circuit providing a fluid flow and charge pressure sufficient to perform the second operation.

Abstract: Methods and systems for storing kinetic energy in a fluid-base power circuit. A regenerative control valve manifold diverts fluid flow from a hydraulic device performing a first operation into an accumulator. The accumulator stores a fluid volume sufficient to perform a second operation. The regenerative control valve manifold connects the accumulator to the power circuit providing a fluid flow and charge pressure sufficient to perform the second operation.

Abstract: Methods and systems for operating an absorber-replenisher to supply fluid to a low pressure circuit in a hydrostatic circuit or recover surplus energy usually wasted across a pressure relief valve in the low pressure side by intensifying it for use in a high pressure circuit in the hydrostatic circuit. The absorber-replenisher 1) allows fluid flow through a high pressure motor-pump section of the absorber-replenisher from a high pressure circuit source causing a low pressure motor-pump section to turn providing additional fluid flow to the hydrostatic circuit, or 2) allows increased fluid flow from the low pressure portion of the hydrostatic circuit to increase pressure until the higher pressure induces a higher net torque of the low pressure motor-pump section to reverse the direction of the absorber-replenisher and pump fluid flow into a high pressure circuit through the high pressure motor-pump section.

Abstract: Methods and systems for operating a cylinder lock valve to control fluid flow to a hydraulic cylinder operating a drilling rig sub-system. The lock valve 1) allows fluid flow through the valve if pressure on a main and pilot area overcomes a closing spring force on the valve, or 2) blocks flow through the valve if a loss in charge pressure in the main and pilot area falls below the closing spring force on the valve.