Assignee: Water Services of America, Inc.

Location: Milwaukee, WI
No. of patents: 31

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Number	Title	Issue Date
5010950	Ball strainer for circulating ball cleaning system A ball strainer for foam rubber cleaning balls in a cleaning system for process piping includes a ball collecting and discharge chamber at the downstream end of the screen which is disposed wholly outside the wall of the pipe in which the screen is mounte...	04/30/1991
4984629	Ball collector and filling apparatus for circulating ball cleaning system A ball collecting apparatus for a pipe cleaning system utilizing circulating foam rubber balls includes a cylindrical housing having a rotary ball retaining screen disposed therein which is movable between a ball circulating position, a ball collecting an...	01/15/1991
4904126	Truck mounted vacuum loading apparatus A vacuum loading apparatus is adapted to be mounted on the bed of a conventional pick-up truck and includes a primary particulate settling chamber and an integrally attached filter chamber having open communication with the settling chamber through a comm...	02/27/1990
4739796	Fluid flow diverter Fluid flow diverter apparatus is described for reversing the direction of fluid flow through a process loop, such as a bundle of heat exchange tubes in an air conditioning system. The apparatus utilizes a housing enclosing a rotary valve in which the dive...	04/26/1988
4653537	Fluid flow diverter valve with improved chamber arrangement A diverter valve (1) includes a rotatable axially shiftable element (21) disposed within a housing (10) having a cylindrical wall (11), end walls (12, 14) and four cage bars (42-45). The element has channel plates. One channel plate (29) is disposed adjac...	03/31/1987
4643248	Protection of heat exchanger tube ends A heat exchanger (1) has a plurality of metallic fluid flow tubes (5) secured adjacent their ends by tube sheets (6, 7). A non-corrodible, erosion resistance, non-metallic elongated sleeve-like insert (30) is telescopingly mounted within a tube. The inser...	02/17/1987
4627486	Correction for tube sheet misalignment in heat exchangers having tube cleaning arrangements therein A heat exchanger having end head elements has a plurality of fluid flow tubes secured adjacent their ends by tube sheet elements. Cleaning devices are adapted to shuttle back and forth in the tubes and are adapted to be captured by basket elements. A bask...	12/09/1986
4607686	Basket retainer for heat exchanger tube cleaning element A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Cleaning elements are adapted to shuttle back and forth in the tubes and are adapted to be captured by baskets. A basket retaining plate is fixedly mounted, a...	08/26/1986
4595050	Heat exchanger tube cleaning element capturing device with retainer rotation prevention A heat exchanger (1) has a plurality of fluid flow tubes (5) secured adjacent their ends by tube sheets (6, 7). Cleaning elements (18) are adapted to shuttle back and forth in the tubes and are adapted to be captured by elongated slotted baskets (17). A r...	06/17/1986
4595049	Basket retainer for heat exchanger tube cleaning element A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Cleaning elements are adapted to shuttle back and forth in the tubes and are adapted to be captured by baskets. A basket retaining plate is fixedly mounted, a...	06/17/1986
4592417	Heat exchanger tube cleaning element capturing device with offset stop A heat exchanger (1) has a plurality of fluid flow tubes (5) secured adjacent their ends by tube sheets (6, 7). Cleaning elements (18) are adapted to shuttle back and forth in the tubes and are adapted to be captured by elongated slotted baskets (17). A c...	06/03/1986
4561495	Alignment of basket retainer clips for heat exchanger tube cleaning elements A heat exchanger (1) has a housing (2) containing a plurality of fluid flow tubes (5) through which tube cleaning elements (18) are propelled between elongated baskets (17) mounted in communication with the tube ends. The baskets include longitudinally ex...	12/31/1985
4553396	Brine concentrator A system for concentration of waste cooling tower blowdown in a steam turbine power plant. The cooling tower blowdown feed is withdrawn from a main power plant condenser and is recirculated through an auxiliary cooling tower and an auxiliary condenser. Th...	11/19/1985
4552207	Basket retainer for heat exchanger tube cleaning element A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Cleaning elements are adapted to shuttle back and forth in the tubes and are adapted to be captured by baskets. A basket retaining plate is fixedly mounted, a...	11/12/1985
4544026	Heat exchanger tube cleaning element capturing device with hinged retainer A heat exchanger (1) has a plurality of fluid flow tubes (5) secured adjacent their ends by tube sheets (6, 7). Cleaning elements (18) are adapted to shuttle back and forth in the tubes and are adapted to be captured by elongated molded plastic slotted ba...	10/01/1985
4543996	Fluid flow diverter valve with improved flow-through construction A four-way diverter valve (1) is constructed with a rotatable butterfly valve element (20) within the cylindrical valve housing (10) and with said element having a pair of end heads (21, 22) joined by a generally planular central tapered plug (23) of long...	10/01/1985
4520847	Fluid flow diverter disc valve A longitudinally extending housing (21) is provided with a generally cylindrical side wall (22) closed by opposed end walls (23,24). The housing side wall is ported, to connect with supply and return lines (17,18) from a source of pressurized fluid (15), ...	06/04/1985
4508164	Dash pot basket for heat exchanger tube cleaning element A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Brushes are adapted to shuttle back and forth in the tubes and are adapted to be captured by baskets. The brushes comprise an elongated wire twist stem having...	04/02/1985
4506703	Four-way fluid flow diverter valve A four-way diverter valve has a cylindrical housing wall (10) and two pair of in-line ports (16-19) for connection to a heat exchanger condenser (3). A diverter element (20) is mounted for rotation on a transverse axis (25). The diverter element has a baf...	03/26/1985
4489776	Heat exchanger with tube cleaning element capturing cage interconnection A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Cleaning elements, such as brushes, are adapted to shuttle back and forth in the tubes. Cleaning element capturing cages or baskets are mounted to the tube en...	12/25/1984
4445540	Sleeve-type fluid flow diverter A fluid flow diverter includes a housing and a rotatable sleeve mounted for rotation on an axle and spaced inwardly from the housing walls. The sleeve and housing include ports which are selectively positioned in registered or unregistered relationship, d...	05/01/1984
4418747	Shuttle cleaning of heat exchanger tubes A shuttle assembly is provided which includes a spring cleaning element secured at each end to mounting members which are freely slideable on a longitudinal axial rod. The rod is longer than the cleaning element in its normal extended position so that the...	12/06/1983
4415022	Mounting for heat exchanger tube cleaner capturing devices A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Cleaning elements are adapted to shuttle back and forth in the tubes and are adapted to be received by capturing cages. The inner ends of the cleaning element...	11/15/1983
4402360	Retainer for heat exchanger cleaning elements A heat exchanger has a plurality of fluid flow tubes through which shuttle type cleaning elements are carried by the fluid, the direction of which is reversable. The cleaning elements are captured adjacent the tube ends by a transverse plate having cleani...	09/06/1983
4398592	Basket retainer for heat exchanger tube cleaning element A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Cleaning elements are adapted to shuttle back and forth in the tubes and are adapted to be captured by baskets. A basket retaining plate is fixedly mounted, a...	08/16/1983
4397349	Heat exchanger with improved tube cleaning element basket retaining A heat exchanger has a plurality of fluid flow tubes secured adjacent their ends by tube sheets. Cleaning elements are adapted to shuttle back and forth in the tubes and are adapted to be captured by baskets. The baskets are positioned so that their baske...	08/09/1983
4382465	Cleaning arrangement for heat exchange tubes A plurality of elongated tube cleaning element capturing cages of different lengths are mounted within the heat exchanger chamber. The cages are so constructed and positioned so that fluid discharging outwardly from the cages flows laterally in a pluralit...	05/10/1983
4353414	Heat exchanger tube cleaning The ends of the tubes of a heat exchanger condenser are provided with cage-like basket assemblies including tube cleaning brushes or the like. A distributor arm is disposed to move across the tube ends and cause a counter-flow of fluid to move the brushes...	10/12/1982
4269264	Cleaning of heat exchanger tubing A heat exchanger of the steam condenser type or the like includes a plurality of bundles of tubes through which cooling water is pumped. The downstream ends of the tubes open into a chamber and these ends have basket-brush assemblies thereon. A water back...	05/26/1981
4124065	Apparatus for cleaning heat exchanger tubes In a cleaning system for heat exchanger tubes each tube has a chamber at its end for capturing a tube cleaning element such as a brush that is subject to being propelled in opposite directions through the tube by reversing the direction of fluid flow ther...	11/07/1978
3973592	Fluid flow diverter A fluid flow diverter or reverser comprises a housing having a transverse separator wall dividing it into first and second axially adjacent chambers. The first chamber has a diametrally extending separator wall dividing it into subchambers. Each subchambe...	08/10/1976

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Assignee: Water Services of America, Inc.