Abstract: A down hole well tool for use in operating another well tool against the resistance of incompressible well bore fluid. The down hole tool includes a pressure chamber that communicates through an adjustable pressure relief valve with the well bore fluids beneath the tool, so that when the pressure of said fluids exceeds the relief valve setting the valve opens and allows said fluids to pass into the chamber, thereby lowering the fluid pressure beneath the tool and facilitating its downward movement to actuate the other well tool.

Abstract: A device for blending and conveying materials which comprises an elongated trough having an inlet end, a discharge end, and two spaced apart side walls; an apparatus for vibrating the trough; a first blending apparatus connected to the trough between the inlet end and the discharge end including a first lift located adjacent one of the side walls for elevating a first proportion of materials and a second lift located adjacent the other side wall for elevating a second proportion of materials, wherein each lift comprises a ramp connected to a generally horizontal platform; and first and second diverters connected to the first and second lifts, respectively, for folding the first and second proportions of materials over onto a third proportion of materials being conveyed along the trough between the first and second lifts.

Abstract: Apparatus for protecting from water damage the electric motor which drives the cog rake bar screen of a waste water treatment plant. A shell of air impermeable material surrounds the motor and has an opening at the shell bottom to drain water. Various arrangements and devices prevent water or debris from entering the opening.

Abstract: The invention has to do with the modification of well known heat sealing bag machines to increase the production capability of the machines. The use of servo drives for selected components of the bag machine permits the reduction of film acceleration and consequential peak film velocity, thus allowing faster machine cycles at the same film acceleration and consequential film velocity.

Abstract: A band-like safety bumper for an automatic guided vehicle has a hinge pin rigidly attached at either end with a lever rigidly attached to the pin. A proximity switch is located near the lever and sends control signals to stop the vehicle as a result of obstacle induced movement of the lever.

Abstract: The invention is directed to a valve stem double backseat seal wherein the rising stem first engages a non-metallic radial seal and then axially engages the metal backseat shoulder of the valve bonnet.

Abstract: Apparatus and method for easily installing and effectively launching pipeline pigs into a subsea or other underwater pipeline accessible to a diver.

Abstract: An apparatus for filling two cylindrical canning containers with cylindrically compacted and shaped tuna chunks. The apparatus has a flared compression channel for relieving excessive compression in the compacted tuna chunks, a movable shaping wall for controlling the density of the tuna chunks by changing the volume of the channel, and a movable blade between two semi-cylindrical cavities in the shaping wall for splitting the relieved compacted tuna chunks into two streams which then flow easily into the cavities for forming semi-cylindrical ends prior to cutting the formed ends into cylindrical cakes for injection into the canning containers.

Abstract: A support frame for use in supporting a plurality of idler rolls has separate compression and tension support members each extending across the length of the support frame and attached to center brackets for supporting the idler rolls. The support members are rod-shaped having similar width and thickness dimensions.

Abstract: Rolls of individual plastic bags are formed on apparatus that overlaps the bags before the bags are fed into the roll to provide a compact roll of individual bags. The apparatus overlaps portions of the bags so that a plurality of bags can be continuously fed into the roll even though the bags are not mechanically connected end-to-end to adjacent bags on the roll.

Abstract: A pig-compatible three-way valve designed to be mounted on a fluid transfer conduit for use in oil or petroleum distribution or similar operations. The valve includes a tee-shaped tubular passageway and a valve closure element mounted on a control shaft for controlling fluid flow.

Abstract: The spray ring is cycled back and forth along the longitudinal axis of the finisher to allow the high pressure cleaning stream of water or solvent to be directed against the surface of the finisher. A linear rodless cylinder is attached to the spray ring and is sequenced to move the spray ring from one end of the finisher to the other.

Abstract: An annular metallic seal element for wellhead housings to provide a fluid-tight seal with a well casing that will withstand extreme temperatures and high pressures.

Abstract: A wellhead seal for establishing and maintaining a seal between a wellhead and inner pipe element. The seal is an annular elastomeric body having an inner axial surface with a generally convex central portion for pressing against the inner pipe element surrounded by the wellhead and an outer axial surface with a generally concave central portion which, in one embodiment, receives an annular energizing element to increase the sealing force between the body and casing. An annular anti-extrusion ring is provided at the inner edge of each radial end surface.

Abstract: A three-component adjustable mandrel well casing hanger that can be attached to the upper end of a tie-back sub or string to effect a tensioned connection between a subsea location and a surface wellhead of an offshore well.

Abstract: In juice extractor apparatus there is usually provided an orifice tube inside a strainer tube. The orifice tube would have a central aperture through its length for the transport of fruit pulp. The orifice tube of conventional structure is replaced by a fluted column that allows transport of the fruit pulp on the outside of the fluted column and inside the strainer tube.

Abstract: Rolls of individual plastic bags are formed on apparatus that overlaps the bags before the bags are fed into the roll to provide a compact roll of individual bags. The apparatus overlaps portions of the bags so that a plurality of bags can be continuously fed into the roll even though the bags are not mechanically connected end-to-end to adjacent bags on the roll.

Abstract: A high resolution object handling system serves as an object discrimination--identification by creating an object silhouette. The objects are singulated on a conveyor and scanned by a linear array of CCD units (2048 pixels per inch) at a scan rate of 10 MHz. Pixel transitions corresponding to object edge points are converted to a single count value from a counter which is synchronized with the scanner. A microprocessor with a first in, first out buffer memory needs only a capacity to handle the count value rather than all data from the pixels.

Abstract: A pipe swivel joint with male and female hubs and an improved bore seal assembly having an anti-extrusion ring that axially energizes the swivel joint hubs toward their operational position as the joint is assembled.