Abstract: An extension is secured to a valve box in a roadway to be repaved by coating the valve box shoulder and the bottom of the extension with a thin layer of epoxy adhesive, placing a heated neoprene gasket on the shoulder, and setting the extension in place on the gasket. Heating makes the gasket pliable, and heat from the gasket assists in curing the adhesive. A curing-type liquid sealant is introduced into the space around the periphery of the extension to prevent the entry of water, salt and other corrodents.

Abstract: A multiple vessel cascade gas enrichment diaphragm valve/hollow gas-conducting tube combination is provided to control the flow of gas, which combination is particularly useful in an adsorber. The combination includes a capped hollow core connected at only one area to the hollow, gas-conducting tube, the capped, hollow core being provided with one or more perforations through the wall thereof and with a pair of longitudinally spaced-apart annular protrusions, one on each longitudinal side of the perforations. A molded cylindrical tubular elastomeric diaphragm is secured concentrically to the hollow core at the annular protrusions. The diaphragm has walls adjacent the secured ends thereof which are thicker internally than the walls at the region of the perforations, so as to maintain the outer cylindrical tubular shape of the diaphragm. The thicker internal walls each are provided with a pair of longitudinally spaced-apart abutments.

Abstract: A valve apparatus of the ram type having a pair of ram assembly bodies in opposed relation transverse to the valve bore. The ram bodies carry, in recess, respective inner seals which, upon inward movement of the ram bodies, effect sealing engagement so as to restrict flow through the valve bore. A plurality of locking pins are included disposed vertically through each seal, each such locking pin having projections extending outward of its respective seal beyond the top and bottom thereof. Each projection is matingly received by a corresponding slotted portion of the recess within and defined by said ram assembly body for restricting relative movement of said inner seal with respect to movement of its respective ram assembly body.

Abstract: A portable device, capable of being hand carried to a selective location along the length of a fire hose at the scene of a fire, is adapted to be swiftly and easily opened by reason of a hinged relationship of its basic parts, to receive the hose. When swung to a closed position about the hose, the clamping device automatically latches and locks in the closed position, to locate stationary and movable jaws at diametrically opposite points on the hose. Then, by operation of a hydraulic means incorporated directly in the device, the movable jaw is forced toward the stationary jaw, to clamp off the hose. The jaws have a particular configuration adapting the same to tightly clamp the hose against any leakage of water therethrough.

Abstract: A check valve for controlling the flow of fluid through a pipe or other means defining a passageway. The valve comprises an elastomeric valve element that permits flow of fluid through the passageway in a downstream direction while preventing the flow of fluid in the upstream direction. The valve element has a base that is secured to the means defining the passageway, there being an opening in the base through which fluid can flow. Flow of fluid is controlled by vanes projecting downstream from the base, each vane being flexibly connected to the base and being movable about its line of connection with the base between an open position in which the vanes permit ready flow of fluid in a forward direction, and a closed position in which the vanes make sealing engagement with each other, thus preventing upstream flow of fluid.

Abstract: The wall of an elastomer sleeve valve is provided with a lip-shaped internal sealing member at a median region of the wall; when the valve is closed, the sealing member forms two lips contacting each other along a substantially diametral plane to produce sealing, and contacted lips have arcuate ends joining them so that they produce the seal without causing undue stresses in the sleeve wall. In a preferred embodiment the lips contact each other when no hydraulic pressures are imposed on the sleeve in the rest state.

Abstract: The present invention relates to a clamp regulator for transfusing liquid and blood, and in particular to one which utilizes an adjustable wheel made integrally with an auxiliary wheel to compress a tubing on a conical surface so as to regulate the liquid flow passing through the tubing.

Abstract: A valve housing is cooled to minimize any temperature gain by the fluid being controlled. The valve member is moved by an actuator toward and away from a seat to control flow through the housing. The valve member and its stem are made from a heat conductive material. The valve member and its stem are cooled by conduction when the valve member is in an open or closed position.

Abstract: An annular blowout preventer having a housing with a vertical bore therethrough, a packer within the housing including a resilient annulus and upper and lower series of irising metal inserts adapted to increase the support for the annulus when it is deformed axially and extended radially to constrict the vertical bore, a support ring in the annulus under the outer ends of the irising metal inserts to support against upward movement of the inner ends of the inserts on closing of the annulus and an annular piston movable in the housing to apply an axial deformation load to the packer to move it to closed position sealing the bore.

Abstract: An improved annular blowout preventer having a housing, an annular packer mounted in the housing, and a piston mounted in the housing for the application of an axial force to the annular packer; the annular packer includes a resilient annulus with a circular series of rigid interengaging inserts embedded in its upper face with the inner ends of the inserts being thicker than the outer ends so that the inner ends of the inserts move inward as the resilient annulus is moved and interengaging side projections and recesses with shoulders to ensure substantially uniform inward movement of the inner ends of the inserts to a preselected inner support position for the resilient annulus.

Abstract: An annular blowout preventer for use on an oil or gas well rig having a lower housing, an upper housing, a resilient sealing means, a vertical bore coaxially positioned through the housing and a vertically acting piston for actuating the sealing means in which the inner surface of the upper housing and the inner surface of the lower housing are concentric spherical surfaces extending to the bore. The resilient sealing means includes steel segments extending between the top and bottom of the sealing means and the top and bottom of the sealing means and the steel segments have spherical surfaces coacting with the spherical surfaces on the upper and lower housings. The upper and lower housings each include a vertical wall extending downwardly from the spherical surfaces on the upper and lower housing and the vertical moving piston sealingly engages the vertical walls.

Abstract: An annular blowout preventer having a body with a central bore, a piston chamber, and a packer chamber surrounding the central bore, a piston in the piston chamber, an annular packer in the packer chamber, the annular packer including a resilient annulus and a plurality of metal irising inserts embedded in the annulus and having upper triangular plates, lower triangular plates, a stem connecting the plates and means interconnecting adjoining plates to avoid inadvertent separation of one or more of said inserts, the annular packer moving between open and closed positions responsive to movement of the piston.

Abstract: A new and improved inner seal and support rod assembly for a blowout preventer including an inner seal assembly for improved sealing and configured to promote ease of maintenance and removal thereof in cooperation with substantially horizontally disposed, vertically aligned support rods of the blowout preventer.

Abstract: An open-sided housing constructed of heat insulative material is provided and includes a resilient and compressible seal strip extending about the wall portions of the housing defining the open side thereof. The central portion of the closed side of the housing opposite the open side thereof includes anchor structure and a pair of elastic tension member structures are provided and have one set of corresponding ends anchored relative to the anchor structure and include means at the other pair of corresponding ends thereof for releasable engagement with selected portions of an associated hose bib.

Abstract: A device for attachment of a resilient and/or flexible tube to a nipple, nozzle or like connection to enable the resilient and/or flexible tube to be retained on the nipple, nozzle or like connection in normal use.In order to provide security for the resilient and/or flexible tube, a retaining element is provided which has an aperture therein of longer diameter than the tube with which it is intended to be used, the diameter of the aperture being large enough to pass over the tube when the tube is in position on the nipple, nozzle or like connection but small enough to cause the resilient and/or flexible tube to grip the nipple, nozzle or like connection.

Abstract: An extended vertical and parallel squeezing device for plastic pipe in a plastic pipe distribution system for fluent materials such as gas and water. According to the invention, height adjustable valve boxes are provided at predetermined squeeze-off points. The plastic pipe squeeze device comprises a pair of squeeze bars which are rotated about a common axis from above the ground via the valve box. A hollow circular shaft and a second shaft internally therein have pipe engaging members at the lower ends thereof, respectively, and a drive means is provided at the opposite ends of the vertical shaft for relatively rotating same so that the pipe engaging members rotate towards each other to squeeze the plastic pipe therebetween. Stop means are provided to limit the amount of squeeze and avoid damage to the plastic pipe and a spacer, offset from the point of engagement of the pipe engaging members provide space for distortion of the pipe from round to oval as it is squeezed.

Abstract: A well blowout preventer packer unit is characterized by long life, and induced back to front (radial) rubber feeding between metallic inserts to close on well pipe or on a well tool for producing a pressure gradient against the pipe or tool which is greatest at the bottom of the packer extent engaging the pipe, and lowest at the top of the packer extent engaging the pipe. The preventer piston has multiple interior frusto-conical surfaces to progressively and sequentially penetrate the packer rubber to effect controlled and enhanced rubber displacement for sealing against the pipe or tool; one of such surfaces is located relatively further from the piston axis than another such surface and has greater angularity relative to that axis than the other surface, and said one surface also has axial projection of greater radial dimension than that other surface.

Abstract: A tube valve having a tube that closes the valve by being moved to a position juxtaposed to an impervious support structure having a traversing impervious barrier and that opens the valve by being moved away from the support structure wherein the "water hammer" effect is minimized by tube movement resistance generated by the barrier configuration.

Abstract: This invention relates to the device for imposing a linear movement to the valve stem of the free-disc butterfly valves or the free-ball-plug valves in one direction before imposing a rotating movement to open the valve and another linear movement to the valve stem in the other direction after imposing another rotating movement to close the valve.

Abstract: The rate of flow of a fluid through plastic tubing is varied by clamping a portion of a circumferential section of the tube wall with sufficient force to fully close that part of the passage between the clamped wall portions, permitting fluid flow only through the resulting, remaining open cross-sectional area. Cold flow of the plastic material of the clamped portion of the tubing wall, such as might otherwise effect a change in the remaining cross-sectional flow area, is prevented or minimized by rigidly confining the clamped section. To adjustably vary the flow rate, the operative, passage-defining wall section of the tubing is varied by uniformly varying the ratio of the section of clamped tubing, and the remaining, operative wall portion of the tubing, or by deforming the operative wall portion.