Other

Crane Company

Protech Gmbh

Charles A McClure

Malcolm F Irwin

Kathleen Ellison

Yvonne Gholston

Jim Brewer

Dyle Harville

Mary J Smithy

Eddie Phillips

Eugene McNutt

Danny Kirby

Mildred Lee

A safety nut assembly is provided for mounting to the carriage of a backstand apparatus to which a large roll of paper is rotatably mounted. The backstand apparatus includes an inclined screw spindle to which the carriage is threadedly engaged, such that rotation of the screw spindle moves the carriage therealong. The safety nut assembly comprises a mounting portion for secure but removable mounting to the carriage of the backstand. The safety nut assembly further includes a threaded aperture for threadedly engaging the inclined screw spindle. The threaded grooves of the threaded aperture in the safety nut assembly are larger than the threads of the primary weight-bearing bushing in the carriage. Thus, the safety nut assembly will assume a weight-bearing function only upon failure of the primary bushing in the carriage. The safety nut assembly may be formed from two opposed halves which can be assembled around opposed sides of the inclined screw spindle to facilitate the retrofitted mounting of the safety nut assembly to the backstand apparatus.

Safety nut assembly for backstand apparatus

Bio-oxidative treatment of aqueous waste by means of a partially submerged rotating biological contactor (or RBC) is improved by suffusing the rising submerged quadrant of an RBC with air furnished within the RBC perimeter. Air is distributed along and outward from the rotational axis and is released between discs of the RBC. Some of the air so released is trapped by protrusions on the discs. Rotation of such RBC is accomplished or at least aided by differential buoyancy imparted by such air suffusion and trapping.

Aqueous waste treatment

Gravity flow of liquid in sewer pipes or similar conduits is determined in the absence of a weir, flume, or similar flow-rating device by sensing the depth of the liquid in the pipe, converting such depth to the corresponding rate of flow through the pipe in accordance with a known relationship of depth to flow and without performing any mental computation, and providing a readable indication of instantaneous flow rate, and/or optionally integrating the flow rate over time, recording such flow rate and/or the integrated flow, printing out one or the other, or both, etc. Apparatus for doing so includes a pressure sensor, a depth-to-flow converter, and usually a separate indicator/recorder. Unlike systems utilizing flumes or weirs, this apparatus and this method can accommodate sludge deposited in a pipe or other conduit to be monitored.

Flow monitoring

Flow velocity of a liquid stream in a sewer or water pipe or conduit is determined by injecting electrically conductive fluid transversely of the flow and measuring the time for the increased conductivity to be sensed at a given location downstream from the injection location. In conjunction with measurement of flow depth as by bubbling a gaseous fluid into the liquid stream and determining the back pressure applied thereto by the overlying liquid, highly accurate monitoring of flow rate and volume becomes feasible.

A probe adapted to fit an open end of a sewer or water pipe or conduit is provided with jets at an upstream portion and sensors at a downstream portion for detecting jetted fluid. In conjunction with timing means and with means for determining flow depth, such as a bubbler device, such probe provides highly accurate calculation of flow velocity by a rate computer. The velocity multiplied by the output of means for converting the flow depth to cross-sectional area of flowing liquid, provides the instantaneous flow, which integrated over time gives total flow.

Liquid flow in an open channel is monitored by sensing pressure of overlying liquid as depth thereof, transmitting changes in the sensed depth to means for characterizing depth as flow, and indicating the liquid flow so characterized. The pressure sensing and the transmittal of changes in sensed depth are accomplished pneumatically, via a bubbler tube and bellows plus self-balancing cam-and-valve means for controlling rotation of an air motor.

A probe adapted to fit an open end of a sewer or water conduit is provided with jets at an upstream portion and sensors at a downstream portion for detecting jetted fluid. In conjunction with timing means and with means for determining flow depth, such as a bubbler device, highly accurate monitoring of flow rate and volume becomes feasible.

Liquid samples of like composition and like or unlike volume are collected simultaneously. Liquid is withdrawn continuously from a body of liquid to be sampled. The withdrawn liquid is passed continuously into and fills a confining region having multiple outlets. Streams of liquid from the respective outlets are diverted intermittently for sample collection and otherwise are returned to the source body of liquid or to waste. The multiple-outlet confining region is embodied in a plenum chamber, and individual diverter chambers are provided for the streams of liquid from the plenum chamber, together with means for effecting the diversion.

Growing community of inventors

Malvern, PA, United States of America

Charles A McClure