Scavenge loss limiter for a rotary compressor

    公开(公告)号:US12215692B1

    公开(公告)日:2025-02-04

    申请号:US18581865

    申请日:2024-02-20

    Inventor: Taylor Stratman

    Abstract: A fluid compressor system has a scavenge loss limiter that increases the efficiency of the fluid compressor system by reducing the compressed working fluid recirculated into the airend through a scavenge flow. The scavenge loss limiter includes a scavenge hole positioned at a discharge end face of a rotor cavity of the compressor housing. As a rotor of the compressor system rotates, the rotor may intermittently restrict the free-flowing scavenge flow returning from a lubricant separation tank. The rotor may be a male rotor having a plurality of male lobes. As the discharge end clearance between the rotor and the discharge end face is tightly controlled and monitored, a better control of the scavenge flow returning to the rotor cavity is achieved.

    Add-on user interface module for precision power tools

    公开(公告)号:US12186879B2

    公开(公告)日:2025-01-07

    申请号:US15874865

    申请日:2018-01-18

    Abstract: A power tool is provided. The power tool includes a rotatable tool holder adapted to receive a work instrument, a motor adapted to drive the rotation of the tool holder, a housing containing at least the motor and a handle extending therefrom that is configured to be gripped to manipulate the tool, a power source detachably coupled to the handle and adapted to deliver power to the motor, and an actuator adapted to select powered operation of the tool. The power tool may further include a user-interface module detachably coupled to the housing and configured to receive operational input, wherein the user-interface module communicates the operational input to the tool to govern the operational characteristics of the tool.

    POSITIVE DISPLACEMENT ROOTS BLOWER NOISE SUPPRESSION

    公开(公告)号:US20240384718A1

    公开(公告)日:2024-11-21

    申请号:US18782891

    申请日:2024-07-24

    Abstract: A positive displacement roots blower can include a housing having an inlet structured to receive an incoming flow of a fluid, an outlet structured to receive an outgoing flow of the fluid, and a passage. The positive displacement roots blower can also include a pair of intermeshed rotating members supported for complementary rotation within the housing, where the rotating members and the housing form respective operating volumes there between which rotate with the rotating members. Each of the respective operating volumes has the following regions: (1) open to inlet/closed to outlet; (2) closed to inlet/closed to outlet; and (3) closed to inlet/open to outlet. The passage includes a restriction and connects to at least one of the operating volumes when the at least one of the respective operating volumes is in region (2). The restriction can be a venturi feedback connecting to the outlet.

    AIR MOTOR WITH INCREASED DWELL AT MAX VANE EXTENSION

    公开(公告)号:US20240368992A1

    公开(公告)日:2024-11-07

    申请号:US18647445

    申请日:2024-04-26

    Abstract: A pneumatic motor includes a stator having a stator inner wall including a dwell region and a rotor eccentrically disposed within the stator. The rotor is configured to rotate about the axis of rotation and includes a plurality of vanes disposed around the rotor. Each vane of the plurality of vanes is configured to slide within a respective slot formed in the outer surface of the rotor between a fully retracted position and a fully extended position as the rotor rotates about the axis of rotation to maintain contact with the stator inner wall. The stator inner wall has a radius relative to the axis of rotation that is substantially constant within the dwell region so that vanes of the plurality of vanes are in the fully extended position within the dwell region.

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