Abstract: A mooring system for controlling an aerostat. The mooring system can be easily aligned with the prevailing wind direction while the aerostat is flying or when moored. The mooring system can either be a fixed, permanent ground installation or a mobile installation. All winches required to control the aerostat during flight and to secure the aerostat to the mooring system are powered from the same source. A nose receptacle is included as part of the mooring system to allow the aerostat to carry a heavier payload. The mooring system includes a main winch system to control flight of the aerostat and close haul and nose line winches to aid in securing the aerostat.

Abstract: A running tool for installing a wireline retrievable safety valve in a landing nipple of a well tubing string including a body connectible with a wireline tool string, a locking assembly for releasably locking the body with a well safety valve, a core connected with the body and connectible by a shear pin with a well safety valve, and a spring isolator tube assembly connected with the core and engageable with a spring operator tube in a safety valve to hold the valve spring compressed during valve installations. The isolator tube assembly prevents down forces on the running tool from direct delivery to the spring operator tube during valve installation.

Abstract: A well system includes a free lift plunger, and a gas supply line and associated motor valve for supplying intermittently injection gas to effect the lifting of the plunger and a slug of production liquid to the outflow line. The motor valve is diaphragm operated; and a control for this motor valve includes a known type of mechanical timer and associated valve which alternately pressurizes and vents its outlet line to alternately effect the closing and opening of the motor valve. An auxiliary control for this system includes a pilot valve and magnetic actuator which responds to the arrival of the lift plunger at the delivery point to effect the closing of the motor valve. A magnet, pivotally mounted on a lever, maintains the pilot valve closure member in a normal first condition, and is shifted by the arrival of the magnetic plunger to shift the valve closure member to a second condition to effect the closing of the motor valve.

Abstract: A pumpdown well completion system for pumpdown well servicing of remotely located wells such as subsea wells including particularly a parking tool and a parking tool landing nipple for a pumpdown flowline to permit pumping a tool train to the landing nipple using a large size piston unit and thereafter pumping a section of the tool train beyond the landing nipple using small size piston units. The parking tool includes a central mandrel having a coupling collet telescopically engaged in a housing having a parking collet. The mandrel is telescopically engaged in the housing for movement between a first traveling position at which the coupling collet connects a large size section of a tool train with a small size section and a second release position at which the small size tool train section is released from the parking tool.

Abstract: A buffer valve or compensator for use in a margarine mold system to permit continuous operation of a positive discharge pump in the system, such valve including a valve housing connected to a conduit section for a flow line on the discharge side of the pump, a central discharge tube in the housing, a blind bore in the discharge tube terminating at the inward end of the tube, lateral discharge ports in the discharge tube into the bore at the inward end thereof, an annular piston in the housing around the discharge tube movable between a first inward end position covering the discharge ports and a second outward end position uncovering the discharge ports, a stop member limiting the outward movement of the annular piston, and ports in the closed outward end of the housing for introducing air under pressure to bias the piston toward the inward end position. The buffer valve is connected between the positive displacement pump, a chiller, and the mold machine.

Abstract: A pumpdown well completion system for pumpdown well servicing of remotely located wells such as subsea wells including particularly a parking tool and a parking tool landing nipple for a pumpdown flowline to permit pumping a tool train to the landing nipple using a large size piston unit and thereafter pumping a section of the tool train beyond the landing nipple using small size piston units. The parking tool includes a central mandrel having a coupling collet telescopically engaged in a housing having a parking collet. The mandrel is telescopically engaged in the housing for movement between a first traveling position at which the coupling collet connects a large size section of a tool train with a small size section and a second release position at which the small size tool train section is released from the parking tool.

Abstract: In a locking mandrel for releasably locking a well tool in a well flow conductor of the type disclosed in U.S. Pat. No. 3,208,531 which includes a tubular body mandrel adapted for securing with a running tool and with a well tool, a locking dog retainer sleeve on the body mandrel, expandible and contractible locking dogs carried by the retainer sleeve, and a locking sleeve movable on the body mandrel within the retainer sleeve between a first position at which the locking dogs are expanded and release positions at which the locking dogs are movable inwardly to release positions, the improvement for releasably latching the locking sleeve at the first locking position on the body mandrel which includes an annular latching boss on the body mandrel and an annular latching flange and recess within the locking sleeve.

Abstract: A tubular member, to be a segment of the casing string, is provided with a polished bore at its upper end and a locking profile at its lower end. The locking profile includes a bearing shoulder and internal left hand threads for coaction with a latching mechanism. Another tubular member, to be a segment of the production tubing, has groups of circumferentially separated flutes to (1) maintain concentricity of the tubing segment, (2) provide axial flow passages between the segments, and (3) provide support for components of the tubing segment. A tubular packing mandrel, mounted on flutes, carries external annular packing for sealing engagement with the polished bore. The lower end of the packing mandrel defines an annular valve seat; and a tubular valve closure member, mounted in sliding, sealing relation on the tubing segment, has a coacting upward facing valve seat. A valve spring urges closure of the valve closure member.

Abstract: A hydraulic power pack for supplying hydraulic fluid under pressure for operating apparatus such as hydraulic workover units used in servicing oil and gas wells. The power pack provides substantially constant hydraulic power input to the driven apparatus over a wide range of pressures and flow rates. The power pack includes a constant speed engine, a gear box driven by the engine, a bank of positive fixed displacement pumps of varying sizes driven by the gear box and having discharge ports connected with a common discharge manifold, a hydraulic fluid reservoir, an intake manifold between the reservoir and the pumps, a return line to the reservoir, a recirculating line connected between the discharge from each of the pumps and the return line, and an unloading valve in each of the recirculating lines operable responsive to the pressure in the discharge manifold for recirculating each of the pumps to the reservoir at a predetermined pressure value.

Abstract: An injection assembly includes a packer set in the casing adjacent to the producing zone, having a bore sized to receive production tubing. A portion of the assembly suspended from the string of production tubing includes a side pocket mandrel, a twin flow head, an extensible telescoping housing, and coacting joint means on the extensible housing and the packer for axial joining of these members. The side pocket mandrel, twin flow head, and twin flow converter provide a first passage joined to the production tubing; and a length of inner tubing joined to the twin flow converter extends this passage down into the bore of the packer.

Abstract: An electric hair dryer shaped to appear as a western style gun or six-shooter, wherein the heated air exits from the barrel of the hair dryer gun. The hair dryer gun has a hammer and trigger operated electric switch and safety mechanism designed such that the trigger must be pulled to unlatch the hammer which is connected to the switch. Movement of the hammer serves to turn the hair dryer on and to different modes of operation.

Abstract: A relief valve for use particularly for isolating and for permitting communication between flow passages in a well bore which may include parallel tubing strings connected by an H-Member and a single tubing string and a tubing-casing annulus which communicate through a side-pocket mandrel.

Abstract: An automatic reset pneumatic timer for control of a motor valve on a lift gas injection system of an oil and gas well or a plunger-pump well installation in an oil or gas well. The pneumatic timer includes means for connecting the timer with a source of air or gas pressure, means for connecting the timer with the operator of a motor valve, a cycle timer including a pneumatic valve, an on timer including a pneumatic valve, a pneumatic relay valve connected between the on timer and the motor valve for directing a pressure signal to the motor valve when the on timer is operating, and a pneumatic automatic reset valve connected with the source and the cycle timer and on timer for resetting both timers to initiate a new sequence of operation when the prior sequence is completed. One form of the pneumatic timer operates solely in response to the cycle timer and on timer of the system.

Abstract: A programmable system for controlling the cyclic intermittent operation of a device, such as a flowing gas well. The system comprises battery powered, solid state circuitry including a programmable memory, an up/down counter and a liquid crystal display for the contents of either the memory or the counter. Programming and control information is introduced into the system through a plurality of touch actuated membrane switches under control of logic circuitry. The memory is first programmed with the desired "on" time and "off" time with which the controlled device is to be cyclicly operated. Once started, the system loads the time for the selected starting condition into the counter, establishes that condition in the device and begins counting down toward zero. When zero is reached, the opposite condition is established in the device, and the time for the duration of that condition is loaded from the memory into the counter which begins the down counting cycle again.

Abstract: A wire line removable well safety valve in an oil and gas well completion design including a tubing string, a well packer around the tubing string sealing with the well casing, and a submergible well pump on the tubing string below the packer. The safety valve controls flow of pumped well fluids through the tubing string, directs separated gas into the casing annulus around the tubing string above the packer, and shuts off the flow of pumped fluids and separated gas to the surface while permitting recirculation of pumped well fluids between the annulus and tubing string below the packer.

Abstract: An integrated plastic shower curtain assembly including a pair of rectangular curtain panels secured together in overlapping relationship along inside vertical edge portions by a securing strip folded over and heat sealed with horizontal top edge portions of the curtain panels. A horizontal plastic net panel is secured along a bottom edge portion with the curtain panels by the securing strip. The vertical outside side edges of the curtain panels are each provided with a securing strip of Velcro and is connected along each outside vertical side edge of the curtain panels and a similar strip is provided for connection with an adjacent vertical wall surface for securing the outside vertical edges of the panels with walls at opposite sides or ends of a shower enclosure. Each of the curtain panels has a tie back along each vertical outside edge for gathering and holding the curtains apart for entry and exit into and out of the shower enclosure.

Abstract: An adjustable pipe union for tubing strings including an outer lower mandrel, an inner upper mandrel threaded along a lower end portion into the outer mandrel, packing between the mandrels, an annular seal chamber between the mandrels, a metal-to-metal seal assembly between the mandrels, and a jam nut threaded into an end portion of the outer mandrel around the inner mandrel against the metal-to-metal seal expanding the seal to lock the members together and seal between the members. A short embodiment of the union permits rotational orientation of tubing string apparatus such as valves. A longer embodiment of the union performs a spacing-out function for fitting a tubing string assembly between longitudinally spaced fixed members such as two packers.

Abstract: A rifle having a stock, a receiver, a barrel, a trigger assembly, a magazine, and stock inserts forming mounting blocks for supporting the receiver in the stock. The magazine is a removable integral sheet metal member with inwardly turned longitudinal retainer flanges along the top rear edges of the side walls, a vertical internal retainer boss along each side wall spaced forwardly from the retainer flanges, cartridge case loading ramp edge surfaces along the top edge of each of the side walls of the magazine spaced from the longitudinal retainer flanges, and internal stops on the side walls for limiting the upward movement of a follower within the magazine. The stock inserts are longitudinally spaced mounting blocks having upper cylindrical surface portions fitting the cylindrical surface of the bottom of the receiver along the forward and back ends of the receiver and rectangular side, bottom, and end surfaces for mounting the stock inserts in rectangular cavities in the rifle stock.

Abstract: A rifle having a stock, a receiver, a barrel, a trigger assembly, a magazine, and stock inserts forming mounting blocks for supporting the receiver in the stock. The magazine is a removable integral sheet metal member with inwardly turned longitudinal retainer flanges along the top rear edges of the side walls, a vertical internal retainer boss along each side wall spaced forwardly from the retainer flanges, cartridge case loading ramp edge surfaces along the top edge of each of the side walls of the magazine spaced from the longitudinal retainer flanges, and internal stops on the side walls for limiting the upward movement of a follower within the magazine. The stock inserts are longitudinally spaced mounting blocks having upper cylindrical surface portions fitting the cylindrical surface of the bottom of the receiver along the forward and back ends of the receiver and rectangular side, bottom, and end surfaces for mounting the stock inserts in rectangular cavities in the rifle stock.