Abstract: A flow control valve assembly is connected to the cylinder head of a gas engine for providing an intermittent flow of gaseous fuel in timed relationship to the combustion chamber thereof. A valve cage is removably affixed to the cylinder head, and removably receives a valve cartridge in a telescoping manner therewithin. The valve cartridge cooperates with the valve cage in a manner whereby gaseous fuel flows into the cage, through ports formed in the cartridge, and from the interior of the cartridge into the combustion chamber of the gas engine. The valve cartridge includes a main outer housing which is easily separable into two members. A special seal assembly is received in captured relationship between a valve stem and the two separable members. The unique arrangement of the various components of the cartridge enables the device to be overhauled in a simple and straight forward manner.

Abstract: A twin camera shoulder carry stabilizer device comprising a shoulder stock having mount means on opposed surfaces thereof for supporting opposed cameras. The forward part of the device can be rotated axially to bring either of the two cameras into immediate upright operative position respective to the photographer. Brackets are provided for holding the cameras and may be adjusted forward or backward according to the requirements of the photographer. Each camera is triggered by its own individual flexible release cable in the manner similar to a rifle trigger.

Abstract: The system of this disclosure provides apparatus by which fossil fuel is utilized in the generation of power. The generated power is more efficiently utilized by the apparatus. The system includes an internal combustion process which moves a piston. The piston is directly connected to actuate a special hydraulic pump which provides power fluid to an improved hydraulic motor. Each component of the system is specifically designed respective to the other components of the system to complement one another in a manner to effect an increase in efficiency, and therefore the efficiency gained from each component is added to the efficiency gained by the other components, all of which results in an accumulative gain in power from the total system.

Abstract: A pump off control apparatus for a pump assembly located downhole in a wellbore. The control apparatus prevents the pump motor from running for a finite time interval whenever a pump off condition is encountered. When the apparatus is energized, the downhole pump motor is started, and production normally occurs within a short interval of time, otherwise the pump is automatically shut down for a long time interval, and then another attempt is made to produce the well. When proper flow conditions are achieved within the predetermined short time interval, the control continues to monitor the flow and maintain the downhole pump energized until the well is pumped down and a pump off condition is encountered. The pump off condition is sensed by a flow switch interposed in the production line which senses a condition of inadequate flow and causes the circuitry to shut down the production pump for the long time interval.

Abstract: A rotating blowout preventor having only one moving part which cooperates with an upper bushing to provide resistance to upthrust and downthrust. The apparatus includes provisions for interaction to occur between the rubber of the stripper and the inside peripheral wall surface of the main body in a manner to provide a radial bearing member which resists lateral movement of a driving member received axially through the rotating stripper rubber. The stripper rubber rotates in low friction relationship respective to the remainder of the rotating blowout preventor. The apparatus includes a minimum of moving parts, and therefore is much easier to manufacture, maintain, and operate.

Abstract: Method and apparatus by which a malfunctioning downhole pump of the reciprocatory type can be rendered operative by bumping the pump piston against structure associated with the pump barrel. The invention is carried out on a reciprocatory downhole pump of the type which is actuated by a rod string. The rod string is reciprocated by a pumpjack unit. A hydraulic jack apparatus is interposed between the hanger bar and polish rod clamp of the pumpjack bridle assembly so that the hydraulic jack can be extended to enable spacers to be removed or inserted at a location which changes the relative position of the polish rod clamp and hanger bar, and which also changes the relative position of the downhole pump piston and pump barrel.

Abstract: A helicopter transportable mud pump made into three stages, each of which is separable from one another. Each pump stage is made into a lightweight sub-assembly which can be lifted by a helicopter into inaccessible locations. The adjacent crankshaft ends of the assembled pump stages are series connected in axially aligned relationship respective to one another by a special coupling and drive means. The coupling means is comprised of two coacting coupling members, each of which have confronting faces connected together in a manner to dispose the adjacent shaft ends of the multi-stage pump 120.degree. out of phase respective to one another. The coupling halves are identical in design so that only one member must be duplicated during fabrication of the device.

Abstract: A unitary metal rack having a latch means formed thereon. The rack provides a hanger for articles, and is supported from a frame and gasket assembly, as for example, a truck rear window having a frame, gasket, and glass, wherein the glass is held within the frame by the gasket, and the gasket contacts the marginal edges of the glass and the marginal edges of the frame. The rack includes a bent-up main body having a flat side which bears against a vertical wall of the frame. A hook forms the lower end of the main body. A lip forms the upper edge portion of the main body and extends in opposition to the hook. The upper marginal end of the main body is forced between the gasket and the frame wall, with the lip thereof being positioned in abutting relationship respective to an edge formed at the upper end of the frame wall. A marginal flat side of the main body is placed in contact with the frame wall. Various different objects, including clothes and the like, can be supported by the hook.

Abstract: A filter system has a filter media comprised of particles of filter material contained within the lower end of a vessel. Liquid flows into the upper end of the vessel and down through the filter media, thereby removing unwanted contaminants from the liquid. When the accumulated contaminant load in the filter media reaches a selected value, the filter media is cleaned of contaminants by vigorously circulating the media within the vessel. This scrubbing action transfers the contaminants from the filter media into the scrub water, and thereby enables the contaminants to be removed from the vessel by discharging the scrub water therefrom. All activity is stopped to enable the media to gravitate back to the bottom of the vessel. The cleaned filter is returned to operation.

Abstract: Method of cleaning tubular goods, especially sucker rods, and inhibiting the sucker rods against corrosion as the rod string is being withdrawn from a borehole. The method is carried out by the provision of an enclosure which is attached to the upper end of a cased borehole. The upper end of the sucker rod string is extended axially through the enclosure as the rod string is withdrawn from the casing. A medial length of the rod string is engaged by a resilient packer device which wipes the rod clean of well fluids and loose debris. The rod string is next cleaned within a second chamber by impacting the outer surface thereof with an abrasive substance. The rod surface is again cleaned of any residual material. The rod is then moved through another chamber where corrosion inhibitor is applied to the external surface of the rod.

Abstract: An improved drill collar for forming relatively straight holes in crooked hole type formations. One or more hydraulic drill collars are connected in series relationship within a drill string above a rotary bit at the point of tangency. Each drill collar includes at least one outwardly opening, longitudinally extending slot formed on the exterior thereof. The slot includes a back wall connected to confronting sidewalls and opposed end walls. One lower end of a slot commences in spaced relationship to the lower pin end of the collar. As the drill string is rotated, drilling fluid forms a cushion between the slot and the nearest sidewall of the borehole, thereby kicking or forcing the drill collar away from the borehole sidewall, which in turn forces the drill bit to penetrate in a downwardly direction back towards a vertical position. The borehole meanders a very small amount, as for example 3-4 degrees, rather than uncontrollably leaving the vertical and forming an excessively crooked hole.

Abstract: A sound level alarm device sequentially listens to the sound level of an enclosure or area for a first predetermined interval of time, and thereafter does not listen to the sound level of the area for another predetermined interval of time. The circuit sounds an alarm upon detection of a sound level of a predetermined magnitude measured during the first time interval. The circuitry is designed for omitting quick, sharp noises such as a cough, hand clap, book dropping, or the like. The apparatus is advantageously used in class rooms, laboratories, libraries, and play rooms as a teaching aid wherein people with loud noisy habits are electronically assisted in overcoming these undesirable aspects of their life style.

Abstract: A double acting hydraulically actuated pump and engine valve assembly for use downhole in a borehole for producing fossil fuel therefrom. High pressure hydraulic power fluid is forced downhole to a special control valve means located between opposed engine pistons. The valve means causes the power fluid to apply an alternating force to confronting faces of the pistons, while the opposed faces of the spaced apart pistons serve to pump and force production fluid to flow from a production zone, upward to the surface. The pump assembly can be used in combination with existing bottom hole assemblies, fixed or free type, already installed downhole in the wellbore.

Abstract: A digging tooth is removably received within a tooth receiving holder. The holder is attached to a digging apparatus, such as a trencher machine, for example. The holder includes a socket within which a shank of the tooth is removably received. The socket of the holder is in the form of an outwardly opening, elongated cavity which rearwardly tapers so that the cavity is progressively reduced in size. The tooth shank is rearwardly tapered and made complementary respective to the socket cavity, so that when the shank is telescopingly forced into the cavity, it is wedgedly held in assembled relationship and is easily removed therefrom, and the teeth therefore can subsequently be rapidly and easily replaced.

Abstract: A motor driven wire roller for attachment to a three point hitch of a farm tractor. The apparatus includes an elongated shaft, having a motor means attached to rotate one end of the shaft, and a wire drum having the central axis thereof attached to a medial part of the shaft so that rotation of the shaft by the motor imparts rotational motion into the wire drum. A wire guide having drag plates associated therewith is included in the apparatus. The entire apparatus is easily assembled to the tractor hitch arm of a three point hitch.

Abstract: A toroidal time piece for indicating the time of day. The toroidal time piece comprises a body having opposed faces with there being a relatively large window formed through the body. Each of the opposed faces has a boundary which extends about and defines the configuration of the window and the configuration of a peripheral edge of the body. The body and the window take on various different configurations to impart different artistic appearances into the time piece.

Abstract: Tubular goods, such as drill pipe and production tubing, are measured while going into and coming out of a borehole. An electronic beam is directed from a transmitter and is detected by a distance measuring receiver. The beam commences at a known station relative to one end of a pipe suspended in the derrick; and is received at a second station which is indexed respective to the traveling block of the drilling rig. Another beam measures the position of the other end of the pipe respective to the traveling block. These measurements enable the length of each stand of pipe to be accurately ascertained while the pipe is held suspended within the derrick at a location above the derrick floor. Electronic circuitry, including a digital instrument, automatically computes the length, displays the length in feet and tenths on a digital readout, records the length on a print-out tape, and incorporates an accumulative memory register.

Abstract: A helicopter transportable mud pump made into three stages, each of which are separable from one another. Each pump stage is a light weight sub-assembly which can be lifted by a helicopter into inaccessible locations. The adjacent crankshaft ends of the assembled pump stages are series connected in axially aligned relationship respective to one another by a special coupling means. The coupling means is comprised of two coacting coupling members, each of which have confronting faces connected together in a manner that also causes the adjacent shaft ends of the multi-stage pump to be connected 120.degree. out of phase respective to one another. The coupling halves are identical in design so that only one member must be duplicated during fabrication of the device.

Abstract: A low profile pumpjack unit for producing fluid from a borehole. The pumpjack unit has a main frame supported below ground level. An upright Sampson post is supported by the main frame. A walking beam is journaled to the upper end of the Sampson post. A pitman arm is connected to and drives one end of the walking beam, while a horsehead is attached to the other end. The horsehead has a pair of curved tracks formed on the outermost surface thereof, each of which describes a segment of a circle, with the circle having a radius drawn from the Sampson post journal. The segment has a diagonal which is slightly shorter than the length of the stroke imparted into the sucker rod. The tracks abruptly curve at each end thereof to form the upper and lower ends of the horsehead. A cable bridle is received by an inside part of the horsehead, with the marginal ends of the bridle being maintained in aligned relationship respective to the two tracks which form the aforesaid circumference.

Abstract: An orthopedic appliance of resilient material conforming to the lower back of a person and held in proper position by a waist band. The antilordosis belt device improves ones posture and prevents back injury to the lower back while lifting by reinforcing the muscles associated with the lower spine without unduly interferring with one's normal articulated freedom of motion. The body supporting device prevents increased lordosis by the provision of a relatively wide front belt which girdles the front of the abdomen, and three back belts which extend from attachment at the terminal ends of the abdomen belt and girdles the rear or back of the body. The three rear belts are made up of straps, and comprise a rear belt of medium width which fits above the small of the back and two small belts which fit over the hips.