Abstract: Intake and gas separators for a downhole rotary pump define a fluid flowpath and comprise two or more intake stages arranged in parallel, and two or more of the intake stages each have one or more impellers and one or more inlet holes.

Abstract: A multi-stage intake for a downhole rotary pump. A radial passageway in an inlet coupler to mitigate erosion within a cavity that is formed between the inlet coupler and an adjacent face of an impeller intermediate or outer shroud. Related apparatuses and methods are discussed.

Abstract: A downhole regulating device used in a downhole drill string between a drilling rig and a drill bit. The downhole regulating device has a helical coupling between the upper and lower portion to allow a relative axial and rotational movement defined by the lead of the helical coupling, between the upper and lower portions; a bi-directional biasing device that resists movement in both extension and contraction from the neutral position depending on the combination of pumping pressure, torque, axial hanging loads from drill string components below the tool and applied weight on bit. The biasing device is designed such that there is no pre-load required. A secondary one-directional element may be part of the biasing device to modify the spring rate or stroke length in contraction direction. A metal and composite laminated torsion spring is also described.

Abstract: Intake and gas separators for a downhole rotary pump define a fluid flowpath and comprise two or more intake stages arranged in parallel, with two or more of the intake stages each having one or more impeller. Multiple intakes may be configured in parallel and series, in some cases being provided as compact axial length gas separators.

Abstract: A stage tool assembly has a tubular body defining an interior bore with a port; an opening sleeve axially movable from a first position that restricts the port to a second position that exposes the port; a closing sleeve axially movable from a first position that exposes the port to a second position that restricts the port; and an isolation assembly downhole of the port that, at least when in an activated mode: permits tool passage in a downhole direction through the interior bore; and restricts flow through the interior bore.

Abstract: Various downhole tools are discussed, including intake and gas separators for a downhole rotary pump. Multiple intakes configured in parallel and series are discussed. along with compact axial length gas separators, and gas separators that remove gas in novel ways. Related apparatuses and methods are discussed.

Abstract: Disclosed are disposable, compostable surgical/medical masks comprising (i) a 3-ply face-mask component wherein the two outer layers are a spunbond PLA textile and the third center layer is a meltblown PLA textile, (ii) a deformable nose bar formed from a PLA extrudate, and (iii) a pair of elongate narrow-width 3-ply stretchable soft ear loop strips wherein the two outer strips are spunbond PLA textile and the third middle layer is a compostable elastic film. Some embodiments relate to 4-ply disposable, compostable surgical/medical masks comprising two outer layers each comprising a spunbond PLA textile and two middle layers comprising meltblown PLA textile. Some embodiments relate to 4-ply disposable, compostable surgical/medical masks comprising two outer layers each comprising a spunbond PLA textile, a middle layer comprising a spunbond PLA textile, and a middle layer comprising a meltblown PLA textile.

Abstract: Various downhole tools are discussed, including intake and gas separators for a downhole rotary pump. Multiple intakes configured in parallel and series are discussed, along with compact axial length gas separators, and gas separators that remove gas in novel ways. Related apparatuses and methods are discussed.

Abstract: Various downhole tools are discussed, including intake and gas separators for a downhole rotary pump. Multiple intakes configured in parallel and series are discussed, along with compact axial length gas separators, and gas separators that remove gas in novel ways. Related apparatuses and methods are discussed.

Abstract: A downhole regulating device used in a downhole drill string between a drilling rig and a drill bit. The downhole regulating device has a helical coupling between the upper and lower portion to allow a relative axial and rotational movement defined by the lead of the helical coupling, between the upper and lower portions; a bi-directional biasing device that resists movement in both extension and contraction from the neutral position depending on the combination of pumping pressure, torque, axial hanging loads from drill string components below the tool and applied weight on bit. The biasing device is designed such that there is no pre-load required. A secondary one-directional element may be part of the biasing device to modify the spring rate or stroke length in contraction direction. A metal and composite laminated torsion spring is also described.

Abstract: A stage tool assembly has a tubular body defining an interior bore with a port; an opening sleeve axially movable from a first position that restricts the port to a second position that exposes the port; a closing sleeve axially movable from a first position that exposes the port to a second position that restricts the port; and an isolation assembly downhole of the port that, at least when in an activated mode: permits tool passage in a downhole direction through the interior bore; and restricts flow through the interior bore.

Abstract: A modular fender assembly for a vehicle includes a fender body having first and second body portions defining respective portions of the exterior of the fender body. First and second joiner brackets are bonded onto inner ends of the first and second body portions respectively. The joiner brackets have joiner flanges which can be joined with one another in parallel abutment to join the first and second body portions. Either body portion of the fender can thus be trimmed to length to suit the application prior to bonding the joiner bracket in position according to the new trimmed length. The joiner brackets typically have multiple overlapping and interlocking joiner flanges which span across the abutted seam between the two adjacent fender body portions, including upright stiffener flanges, for improving strength to reduce bending and sagging of the fender assembly at the seam.

Abstract: A modular fender assembly for a vehicle includes a fender body having first and second body portions defining respective portions of the exterior of the fender body. First and second joiner brackets are bonded onto inner ends of the first and second body portions respectively. The joiner brackets have joiner flanges which can be joined with one another in parallel abutment to join the first and second body portions. Either body portion of the fender can thus be trimmed to length to suit the application prior to bonding the joiner bracket in position according to the new trimmed length. The joiner brackets typically have multiple overlapping and interlocking joiner flanges which span across the abutted seam between the two adjacent fender body portions, including upright stiffener flanges, for improving strength to reduce bending and sagging of the fender assembly at the seam.

Abstract: An adjustable terminal basket with lightweight horizontal diffuser grille is mounted in the floor of an occupied space for delivering conditioned air from an under floor air plenum to the occupied space above the floor. The modular floor terminal basket regulates the air passing through the terminal, and the lightweight horizontal diffuser grille diffuses the conditioned air along the floor of the occupied space. The lightweight horizontal diffuser grille is constructed with a top and bottom plate with hollow support pillars between the plates and with reinforcing ribs adjacent the center of the diffuser grille.

Abstract: An adjustable terminal basket with lightweight horizontal diffuser grille is mounted in the floor of an occupied space for delivering conditioned air from an under floor air plenum to the occupied space above the floor. The modular floor terminal basket regulates the air passing through the terminal, and the lightweight horizontal diffuser grille diffuses the conditioned air along the floor of the occupied space. The lightweight horizontal diffuser grille is constructed with a top and bottom plate with hollow support pillars between the plates and with reinforcing ribs adjacent the center of the diffuser grille.

Abstract: A variable air volume ceiling diffuser includes a damper that is raised and lowered by a linkage that is controlled by a duct temperature sensor/actuator and one or more room temperature sensors/actuators. The linkage includes a heating slide movable for the heating mode and a cooling slide movable for the cooling mode. The duct temperature sensor/actuator selects the heating slide for movement by the room temperature sensors/actuators in the heating mode and selects the cooling slide for movement by the room temperature sensors/actuators in the cooling mode. The differential movement between the heating and cooling slides moves a roller that engages a profiled cam surface attached to two lever arms. As the roller moves along the cam surface, the lever arms pivot about their axis of rotation so that the damper moves upward to close the air inlet and downward to open the air inlet.