Abstract: A stump grinding system that includes a vehicle and a stump grinder. The vehicle has a first end, a second end opposite to the first end, and a longitudinal axis defined therebetween. The stump grinder is adapted to engage with the vehicle and has a chassis that operably engages with the vehicle at one of a first end and a second end of the vehicle and has an operative end, and a grinder wheel that operably engages with the chassis at the operative end. The grinder wheel includes a visible portion that is disposed outside of the chassis at the operative end and extends along a transverse axis of the stump grinder. The stump grinding system may also include an operator station of the vehicle that is adaptable to view the visible portion of the grinder wheel along a line-of-sight axis extending from the operator station of the vehicle.

Abstract: A stump grinder for attachment with a vehicle. The stump grinder includes a chassis operably engaged with the vehicle at one of the first end and the second end. The stump grinder also includes a body operably engaged with the chassis. The stump grinder includes a front end positioned proximate to the body, and a rear end positioned proximate to the chassis and opposite to the front end. The stump grinder also includes a grinder wheel operably engaged with the body. The stump grinder also includes a drive assembly operably engaged with the grinder wheel and the body. The stump grinder also includes a push blade assembly operatively engaged with the body, wherein the push blade assembly is independently rotatable on the body between the front end of the body and the rear end of the body.

Abstract: A stump grinding system that includes a vehicle and a stump grinder adapted to engage with the vehicle. The vehicle has a first end, a second end opposite to the first end, and a longitudinal axis defined therebetween. The stump grinder includes a chassis operably engaged with the vehicle at one of the first end and the second end. The stump grinder also includes a body operably engaged with the chassis and a grinder wheel operably engaged with the body and partially disposed outside of the body from the vehicle. The stump grinder also includes a drive assembly operably engaged with the grinder wheel and the body. The grinder wheel of the stump grinder is configured to rotate in a plane that is orthogonal to the longitudinal axis of the vehicle.

Abstract: A culture module is contemplated that allows the perfusion and optionally mechanical actuation of one or more microfluidic devices, such as organ-on-a-chip microfluidic devices comprising cells that mimic at least one function of an organ in the body. A method for pressure control is contemplated to allow the control of flow rate (while perfusing cells) despite limitations of common pressure regulators. The method for pressure control allows for perfusion of a microfluidic device, such as an organ on a chip microfluidic device comprising cells that mimic cells in an organ in the body, that is detachably linked with said assembly, so that fluid enters ports of the microfluidic device from a fluid reservoir, optionally without tubing, at a controllable flow rate.

Abstract: A culture module is contemplated that allows the perfusion and optionally mechanical actuation of one or more microfluidic devices, such as organ-on-a-chip microfluidic devices comprising cells that mimic at least one function of an organ in the body. A method for pressure control is contemplated to allow the control of flow rate (while perfusing cells) despite limitations of common pressure regulators. The method for pressure control allows for perfusion of a microfluidic device, such as an organ on a chip microfluidic device comprising cells that mimic cells in an organ in the body, that is detachably linked with said assembly, so that fluid enters ports of the microfluidic device from a fluid reservoir, optionally without tubing, at a controllable flow rate.

Abstract: A stump grinding system that includes a vehicle and a stump grinder adapted to engage with the vehicle. The vehicle has a first end, a second end opposite to the first end, and a longitudinal axis defined therebetween. The stump grinder includes a chassis operably engaged with the vehicle at one of the first end and the second end. The stump grinder also includes a body operably engaged with the chassis and a grinder wheel operably engaged with the body and partially disposed outside of the body from the vehicle. The stump grinder also includes a drive assembly operably engaged with the grinder wheel and the body. The grinder wheel of the stump grinder is configured to rotate in a plane that is orthogonal to the longitudinal axis of the vehicle.

Abstract: A stump grinder for attachment with a vehicle. The stump grinder includes a chassis operably engaged with the vehicle at one of the first end and the second end. The stump grinder also includes a body operably engaged with the chassis. The stump grinder includes a front end positioned proximate to the body, and a rear end positioned proximate to the chassis and opposite to the front end. The stump grinder also includes a grinder wheel operably engaged with the body. The stump grinder also includes a drive assembly operably engaged with the grinder wheel and the body. The stump grinder also includes a push blade assembly operatively engaged with the body, wherein the push blade assembly is independently rotatable on the body between the front end of the body and the rear end of the body.

Abstract: A culture module is contemplated that allows the perfusion and optionally mechanical actuation of one or more microfluidic devices, such as organ-on-a-chip microfluidic devices comprising cells that mimic at least one function of an organ in the body. A method for pressure control is contemplated to allow the control of flow rate (while perfusing cells) despite limitations of common pressure regulators. The method for pressure control allows for perfusion of a microfluidic device, such as an organ on a chip microfluidic device comprising cells that mimic cells in an organ in the body, that is detachably linked with said assembly, so that fluid enters ports of the microfluidic device from a fluid reservoir, optionally without tubing, at a controllable flow rate.

Abstract: A power rake for attachment with a vehicle. The power rake includes a main frame. The power rake also includes an adjustment assembly operably engaged with the main frame, and the adjustment assembly is independently moveable relative to the main frame. The power rake also includes a rotor assembly operably engaged with the adjustment assembly, and the rotor assembly is independently moveable relative to the main frame by the adjustment assembly. The rotor assembly is adapted to be pivoted via the adjustment assembly relative to a vertical axis of the main frame. The adjustment assembly and the rotor assembly are selectively vertically adjustable relative to a vertical axis of the main frame. The rotor assembly is selectively rotatably adjustable relative to a vertical axis of the main frame.

Abstract: A culture module is contemplated that allows the perfusion and optionally mechanical actuation of one or more microfluidic devices, such as organ-on-a-chip microfluidic devices comprising cells that mimic at least one function of an organ in the body. A method for pressure control is contemplated to allow the control of flow rate (while perfusing cells) despite limitations of common pressure regulators. The method for pressure control allows for perfusion of a microfluidic device, such as an organ on a chip microfluidic device comprising cells that mimic cells in an organ in the body, that is detachably linked with said assembly, so that fluid enters ports of the microfluidic device from a fluid reservoir, optionally without tubing, at a controllable flow rate.

Abstract: A power distribution unit includes a circuit protection device having output terminals and a current transformer board connected to the output terminals of the circuit protection device. The power distribution unit further includes a signal board connected to the current transformer board and a measurement board connected to the signal board.

Abstract: Methods of removing bubbles from a microfluidic device are described where the flow is not stopped. Methods are described that combine pressure and flow to remove bubbles from a microfluidic device. Bubbles can be removed even where the device is made of a polymer that is largely gas impermeable.

Abstract: Methods of removing bubbles from a microfluidic device are described where the flow is not stopped. Methods are described that combine pressure and flow to remove bubbles from a microfluidic device. Bubbles can be removed even where the device is made of a polymer that is largely gas impermeable.

Abstract: A power distribution unit (“PDU”) comprises a housing, a power module mechanically connected to the housing, at least one outlet module separately and mechanically connected to the housing, and a communications module mechanically connected to the housing. The PDU includes busbars that are electrically connected to the modules.

Abstract: Methods of removing bubbles from a microfluidic device are described where the flow is not stopped. Methods are described that combine pressure and flow to remove bubbles from a microfluidic device. Bubbles can be removed even where the device is made of a polymer that is largely gas impermeable.

Abstract: A culture module is contemplated that allows the perfusion and optionally mechanical actuation of one or more microfluidic devices, such as organ-on-a-chip microfluidic devices comprising cells that mimic at least one function of an organ in the body. A method for pressure control is contemplated to allow the control of flow rate (while perfusing cells) despite limitations of common pressure regulators. The method for pressure control allows for perfusion of a microfluidic device, such as an organ on a chip microfluidic device comprising cells that mimic cells in an organ in the body, that is detachably linked with said assembly, so that fluid enters ports of the microfluidic device from a fluid reservoir, optionally without tubing, at a controllable flow rate.

Abstract: The invention relates to a perfusion manifold assembly that allows for perfusion of a microfluidic device, such as an organ on a chip microfluidic device comprising cells that mimic cells in an organ in the body, that is detachably linked with an assembly so that fluid enters ports of the microfluidic device from a fluid reservoir, optionally without tubing, at a controllable flow rate.