Abstract: A transmitter transmitting a sensed process variable over a conductor includes a cylindrical housing having a terminal compartment and an electronics compartment separated by a bulkhead. The terminal compartment used for conductor connection is subject to moisture accumulation. An access channel fully intersects an internal surface of terminal compartment such that the access channel drains moisture from the terminal compartment across a range of mounting orientations. The transmitter includes a circuit in the electronics compartment for compensating a process variable and providing the compensated process variable via a feedthrough circuit assembly in the bulkhead, which in one embodiment, includes an encapsulated radio frequency interference filter, to terminals in the terminal compartment for coupling to a conductor that is connected to an external controller.

Abstract: This invention is a method for inhibiting corrosion in metallic flow lines containing hydrocarbon and/or aqueous fluids comprising adding to the fluid contained in the flow line a corrosion inhibiting amount of a water-soluble ampholytic substituted imidazoline having the formula: ##STR1## wherein R1 comprises a radical selected from the group consisting of hydrogen, alkyl, and aryl groups having 6 to 30 carbons; R2 comprises a radical selected from the group consisting of polyalkylene polyamines having from 2 to 16 carbon atoms, NH.sub.2, N(R.sub.4).sub.2, OH and SH; R.sub.3 is a radical selected from the group consisting of carboxylate, carbonate, sulfite, sulfate, phosphite, and phosphate; n is a number from 1 to 10; and, R4 comprises a branched or linear alkyl chain having a length of 1 to 8.

Abstract: The present invention provides a process for stabilizing iron oxides and iron hydroxides in produced oil field waters. A water soluble polymer containing pendant N-substituted amide functionality units is added at a rate of about 6 parts by weight polymer to 10 parts by weight iron in the produced water.

Abstract: A method of corrosion inhibition using a gelled inhibitor is disclosed. The method comprises consecutively introducing into an annular region of a jacketed pipeline a hydrogel slurried in an environmentally innocuous oil medium and a corrosion inhibitor dissolved in an aqueous medium. The liquid media are contacted to form a gelled corrosion inhibitor in the annulus. The method is particularly useful in buried pipelines where corrosion monitoring is difficult.

Abstract: A waterproof housing in the form of a generally rectangular collapsible bag made from a flexible waterproof material and which is shaped and dimensioned to accommodate a camera. The bag is provided with a pocket having a lens port and shaped to locate the lens port with respect to the camera lens. Another pocket has a viewing port, and is shaped to locate the viewing port with respect to the camera viewfinder. The pockets are provided with respective reinforcements, in the form of annular collars, to locate positively the lens port and viewing port with respect to the camera lens and viewfinder respectively. The pocket having the viewing port may be a gaiter made from a flexible rubber material, which permits viewing substantially through the operative range of the viewfinder in the operative environment of the camera.

Abstract: A small needle tip cover is provided which is capable of rendering a used disposable needle safe from accidental punctures. The needle tip cover can take the form of a small rectangular piece of sheet metal that is bent back upon itself. The bend is shaped to provide a spring means which is operable to force the opposing sides of the cover together. The inner surfce of each side includes a plurality of serrated burrs which contact the shaft of a used needle and prevent the tip thereof from escaping. The needle tip cover is kept open by a collapsible column. Until the introduction of a used needle tip therebetween, the column is subject to failure from any slight transverse force, such as that provided by the shaft of the needle pressing there against.

Abstract: A waterproof housing is in the form of a generally rectangular collapsible bag (43) made from a flexible waterproof material and which is shaped and dimensioned to accomodate a camera. The bag (43) is provided with a pocket (44) having a lens port (47) and shaped to locate the lens port (47) with respect to the camera lens. Another pocket (50) has a viewing port (52), and is shaped to locate the viewing port (52) with respect to the camera viewfinder. The pockets are provided with respective reinforcements, in the form of annular collars (47, 53), to locate positively the lens port and viewing port with respect to the camera lens and viewfinder respectively. The pocket (50) having the viewing port may be a gaiter made from a flexible rubber material, which permits viewing substantially through the operative range of the viewfinder in the operative environment of the camera.

Abstract: The present invention entails a system and method of controlling and preventing the spread of land fires and particularly forest fires. This is accomplished by forming a substantial foam strip along an area spaced from the fire, and back burning from the foam strip towards the fire or fire area. To form the foam strip, the present invention discloses the method of dropping foam containing containers from an aircraft in a selected pattern along the strip area designated. The foam containers are provided with valves that open approximately on impact or at a selected time thereafter to cause the release of the foam.

Abstract: Disclosed herein is a process for treating textile materials with finishing agents wherein a first finishing agent-containing composition is applied to a textile material and a second composition, in the form of a foam, is thereafter applied to the textile prior to fixation of the the first applied composition. The first composition may also be applied in the form of a foam if desired. The compositions may also contain reactive materials therein.

Abstract: Described herein is a process for preparing a foam composition having a coloring agent therein which is suitable for printing on a fabric. According to the invention, a foam growth inhibitor is added to a previously foamed composition having the coloring agent therein so as to restrict further foaming and substantially maintain the foamed composition at a desired blow ratio.

Abstract: Hard, grating cheese is prepared by a process wherein large masses of curd are assembled, pressed and cured, and wherein the step of brining used in prior art processes is eliminated. In the process, salt is added to milled curd particles having a pH below about 5.1 and fermentable sugars substantially metabolized, the salted curd particles are pressed while withdrawing whey until the curd has moisture content desired in the finished cheese and the curd is cured for a period sufficient to provide hard grating cheese. Since brining is eliminated and the desired moisture content is established prior to curing, the hard grating cheese has substantially no moisture gradient. Consequently, the cheese can be shredded in about 2 to 6 months.

Abstract: Hard grated cheese is comminuted to provide a grated cheese product. The grated cheese product is then subjected to pressure to provide a compact of grated cheese which may be readily packaged and stored. The compact is easily crumbled by hand to provide a grated cheese product for use when desired.