Pf Waterworks LP

Dresser Equipment Group, Inc.

Stephen Samuel Hodgson

Harold Kent Beck

Sanjay Ahuja

Rainer Kuenzel

Chris M Leinen

A drain cleaning apparatus includes a handle and a clog-catching member detachably connected to the handle. Wings, barbs or hooks project radially from the clog-catching member. The wings, barbs or hooks provide an angled projection that catches and holds a clump of debris in a drain pipe for pulling the clump out and unclogging the drain. Different end tools can be removably connected to a clog-catching member or to a smooth extension member to provide multifunctionality. The handle, clog-catching members, smooth extension members and tools can be connected together using a quick-connect connector, such as a snap fastener, a keyhole fastener or a side-release buckle, or a threaded connector. In addition to drain cleaning, the apparatus can be fitted with tools such as a magnet, grabber, light, camera and/or video for retrieval of objects and inspection of a space that is difficult to view directly.

Drain cleaning apparatus

A drain cleaning apparatus, includes a handle and a clog-catching member detachably connected the handle. Airplane-like wings project radially from the clog-catching member. The wings provide an angled projection that catches and holds a clump of debris in a drain pipe for unclogging the drain. Clog-catching members or smooth extension members can be connected end to end for different lengths. Different end tools can be removably connected to a clog-catching member or to a smooth extension member to provide multifunctionality. A drain cleaning harpoon that is an integral unit or one that can be assembled and disassembled is also provided. The harpoon can be fitted on one end with a plurality of J hooks, fish hooks, arrowheads or retractable barbs for catching and holding a mass of debris in a drain pipe.

An internal diffuser on a diffuser stem is disposed in a bore of a rotary control valve for attenuating vibration in gas service or cavitation in liquid service. The valve has a valve body and a valve element, and the valve element is rotatable with respect to the internal diffuser. The internal diffuser can be rotatable or non-rotatable with respect to the valve body. The valve element has a valve stem, and the internal diffuser can be arranged coaxially with the valve stem, but this is not a necessary requirement. In one embodiment the internal diffuser is positioned in the bore of the valve element, and the diffuser stem is parallel with the valve stem and spaced laterally apart from it. In another embodiment the internal diffuser is located in the bore of the valve outside of the valve element in either an inlet or an outlet passage of the valve body. The diffuser stem has an axis which can be nonparallel with respect to the axis of the valve stem. A valve actuator is provided for rotating the valve element, and where the internal diffuser is rotatable, a diffuser actuator is provided for rotating the internal diffuser. The diffuser actuator can be fixed to a plate securing the valve actuator so that the valve element and the internal diffuser first rotate together before an independent adjustment is made for rotating the internal diffuser. Where the internal diffuser is rotatable with respect to the valve body, the valve actuator and the diffuser actuator can be manipulated by a control system, the control system having inputs, outputs and logic for rotating the valve element and the internal diffuser into desired positions.

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Houston, TX, United States of America

Stephen Samuel Hodgson