Abstract: A procedure is described for determining the power output of a downhole drilling motor, when the motor is inside the wellbore. The technique uses stand-pipe pressure and fluid flow rate as the main inputs. The power output of the motor is calculated by carrying out two low flow stall tests at flow rates lower than the drilling flow rate. These tests result in "off-bottom" and stall pressures at the two flow rates. Another off-bottom pressure is taken at the actual flow rate that will be used during drilling operations. From the use of the off-bottom and stall pressure measurements, a determination is made of the differential pressure across the motor and the stall pressure at the actual drilling fluid flow rate. A full power curve and a predicted operating stand-pipe pressure for optimal power generation are provided based on an experimentally verified assumption regarding the change in rotation rate of the motor versus the differential pressure across the motor power section.

Abstract: An air operated liquid pump includes a pump with a reciprocating plunger driven by a piston contained in a cylinder. The plunger is connected to and reciprocates a dispensing piston that moves between two positions relative to the plunger to open and close flow through valve holes that pass through the dispensing piston.

Abstract: An automatic dry wall applicator having an applicator head connected to a translucent body with a quick release mechanism for easy cleaning and a gas spring dispensing system which moves a piston head in the body to dispense dry wall compound. A loading mechanism uses a manual pump which generates sufficient force to overcome the gas spring pressure to force dry wall compound from a reservoir into the head and body to retract the piston head during loading. The piston rod engages a cam brake which frees the rod during loading and locks the piston head from dispensing unless the cam is manually released from the rod. In one form of the invention, an on-off valve closes the applicator head during loading and can be opened to permit dispensing of dry wall compound.

Abstract: An automatic air operated grease gun comprising a reciprocating grease plunger for ejecting grease, and a piston, connected to the plunger, for operating the plunger. The piston is slidably mounted in a cylinder to move between a retracted position and an advanced position. A return spring resiliently biases the piston to its retracted position. A switch selectively connects the cylinder to a source of gas under pressure to advance the piston against the return spring. The piston has a plurality of apertures therein, each aperture having an individual seal, and a release for opening the individual seals to relieve the pressure behind the cylinder and allow it to retract under the force of the return spring.

Abstract: An improved drive system for an extruding apparatus. A piston is mounted for reciprocal movement within a cylinder and moves between a power stroke wherein fluid is extruded from the cylinder and a return stroke wherein fluid is allowed to enter the cylinder. The piston is moved by a throw mounted to a crank. The plane of the axis of the crank is offset from the plane of movement of the piston within the cylinder. The plane of movement of the throw axis is parallel to the plane of movement of the piston during at least a portion of the power stroke of the piston. The throw is circular and the force exerted on the pistons by the throw during the portion of the power stroke is parallel to both planes of movement of the pistons thereby to avoid any sidewise and unequal loading on either one of the pistons.

Abstract: A grease dispensing device includes a gun body, a push rod member, a driving unit, a linkage unit, and a connecting unit. The gun body has a barrel for receiving grease, and a dispensing tube member with an end portion connected to the barrel. The push rod member is inserted radially and slidably into the end portion of the dispensing tube member in order to push the grease out of the dispensing tube member when the push rod member is moved reciprocally. The driving unit has a rotatable output shaft. The linkage unit interconnects the rotatable output shaft of the driving unit and the push rod member for converting rotary motion of the output shaft into reciprocating motion of the push rod member. The connecting unit connects the driving unit and the gun body.

Abstract: A grease pumping assembly includes a drum for receiving grease therein, the drum has a central hole defined in a bottom thereof and is disposed to a base, the base having a first recess, a second recess and a second hole defined therein, the first recess communicating with the central hole of the drum and a motor disposed with the second recess, a first hole defined in the base and communicating with the first recess, a bottom plate disposed to a bottom of the base and the bottom plate having a reduction device disposed therein which is engaged to the motor and the reduction device having an eccentric rod inserted into the second hole of the base for being engaged to a pushing rod, the pushing rod movably disposed between the second hole and the first recess such that the grease drops into the first recess via the central hole of the drum and is pumped by the pushing rod through a first hole defined in the base to a grease gun.

Abstract: A postmix juice dispensing system for dispensing a finished beverage directly from a pliable beverage concentrate having an ice point at or near freezer temperatures, with little or no conditioning. The system preferably uses a one-piece, unitary, disposable package that includes both the concentrate container and a positive displacement metering pump. The disposable package is placed in the dispenser which automatically connects the pump to a pump motor. A mixing nozzle is connected to the metering pump and a water line is connected to the mixing nozzle. Upon pushing a load button, the dispenser automatically feeds compressed air on top of a piston in the concentrate container to force concentrate into the pump. The dispenser automatically reads an indicator on the package to set the pump speed in response to the type of concentrate in the package. The dispenser requires no cleanup or sanitization and allows rapid flavor change.

Abstract: An air grease gun includes a grip, a barrel, a spout pipe unit and a grease storage tube. A generally Y-shaped air passage is formed in the grip and is bifurcated into a first branch and a second branch at the lower end portion of the grip. A compressed air source is communicated with the first branch. The second branch is communicated with the lower air chamber of the grease storage tube via an air tube. A valve normally closes the upper section of the air passage, which is above the first and second branches. The compressed air flowing from the compressed air source enters the grease storage tube via the first and second branches and via the air tube so as to push a tube piston upward, thereby impelling the grease in the grease storage tube into the barrel. Upon actuation of a trigger, the valve opens the air passage so that the compressed air flows into the barrel through the upper section of the air passage, thereby pneumatically moving the grease in the barrel to the spout outlet of the gun.

Abstract: A mechanism for supplying a dilute fertilizer solution to a multiple number of growing plants includes an apparatus for adding fertilizer concentrate to a stream of flowing water, such that a relatively constant ratio of fertilizer to water is achieved. Pressurized water is diverted from a water passage into a container to achieve a fertilizer pumping action. A bag-like membrane in the container forms a pressurized water space that is in pressure contact with a separate fertilizer-containment space. Fertilizer concentrate in contact with the membrane is thus pumpd out of the container and into a stream of water flowing through the water passage. A constriction is provided in the water passage to achieve a pressure drop that produces the desired pumping action.

Abstract: A molding compound metering system meters a molding compound in supplying the molding compound from a molding compound stocker into the injection chamber of an injection barrel by detecting the backward stroke of the injection plunger of an injection cylinder, axially slidably fitted in the injection chamber and detecting the pressure of the molding compound in the injection chamber of the injection barrel. When the injection plunger is moved backward by the pressure of the molding compound supplied into the injection chamber, the discharge of the working fluid from the back working chamber of the injection cylinder is regulated to apply back pressure to the injection plunger by an adjustable-pressure relief valve, and a regulated pressure is applied to the front working chamber of the injection cylinder.

Abstract: A dispensing apparatus for multiple fluids, and especially epoxy, polyester or other resins and hardeners, includes a base, supports for mounting separate containers of two fluids, and a manually operated metering handle for dispensing predetermined proportioned quantities of the two fluids through first and second outlets upon movement of the handle. First and second measuring assemblies, preferably pistons pivotally connected at spaced locations to the handle, receive fluids from the containers and urge precise quantities of the fluids through the outlets. The position of connection of at least one of the pistons to the handle may be changed to vary the proportion of one fluid dispensed with respect to the other fluid. The position of the support for one of the fluid containers may also be changed to assist in changing the piston engagement with the handle. Preferably, air pressure is applied to each fluid container to aid in dispensing the fluids.

Abstract: A hand-held grease gun that is battery-powered and fully portable. The grease gun uses a disposable cartridge filled with grease that is under pressure exerted by a spring loaded plunger. Grease from the cartridge is discharged into a chamber containing a piston to draw the grease from the cartridge into the chamber and discharge it through a nozzle whenever the trigger is actuated by the user.

Abstract: An apparatus and process for dispensing predetermined, incremental units of fusible metal alloy paste material for joining together metal components by means of a pneumatic applicator system.

Abstract: Automatic apparatus for dispensing a food material such as pizza meat. The apparatus utilizes a rotatable valve for conveying a food material from a source thereof to an intermediate, or portioning, cylinder, to a main cylinder where it is introduced into a dispensing station which includes a reciprocatable knife plate. An air actuator is used to rotate the rotatable valve. Non-contact solid state sensors, and pneumatic control valves are employed to control the continuous movement of a food material through the apparatus.

Abstract: The device according to the invention comprises a cylindrical metering chamber (10) of circular section and with an approximately horizontal axis, which, in its upper part, has an aperture (14) opening out into a reservoir (16) filled with product to be metered (12), and which communicates with an outlet channel (18) in which a slide valve (20) moves periodically between a high closing position and a low end-of-metering position; a vane (26) extending radially along a shaft (28) and capable of being driven with a rotary movement of controlled amplitude, during which the free end (30) of the vane (26) sweeps the cylindrical internal surface (32) of the metering chamber (10); and a flap (34) capable of translational movement and of entering the metering chamber (10) periodically to delimit a wall by tangential contact with the said shaft (28), and then withdrawing to allow a complete revolution of the vane (26).

Abstract: A bin for storing and discharging free-flowing granular material such as sugar has a flexible, inflatable double-walled cup-shaped bag resting on the bin floor with the discharge opening in the bottom and a conveyor for discharging to the bin side above the bin floor. In one embodiment, the bin has at least a partial false floor built up to the level of the conveyor. In another embodiment the conveyor is in an upwardly inclined tunnel shaped enclosure.

Abstract: A hand-held, battery-powered dispenser for pumpable materials such as lubricants and, in particular, lubricating grease, comprising a handle, a head, a barrel secured to the head holding a supply of lubricant and a plunger slideable within a bore in the head. The bore intersects an inlet port in communication with the barrel and is in communication with an outlet port for the delivery of the lubricant under pressure. The plunger is reciprocated in the bore through a pressure stroke and a return stroke by a motor in the handle operating a drive mechanism in the head connected to the plunger. The user operates the motor by actuating a switch in the handle which completes a circuit connecting rechargeable batteries in the handle with the motor. A flywheel in the drive mechanism permits significant reductions in the size and weight of the motor and batteries so that the dispenser can be light enough and small enough to be hand-held during operation, yet capable of delivering the lubricant under high pressure.

Abstract: A method and apparatus for dispensing small quantities of viscous materials in a reliable and accurately repeatable manner are described. A deformable tube which couples material in a reservoir to a discharge port is pinched by a valve at the same time the reservoir is pressurized. The material is dispensed in correspondence with the amount of reduction of the tube volume by the pinch valve. A simultaneous depressurizing of the material in the reservoir and the opening of the pinch valve enables a suck-back for a crisp cut-off of the material.

Abstract: Spreader for farmyard manure has a moving wall to push manure to a discharge rotor. The wall is moved by a hydraulic ram located at the side of the spreader. The ram is coupled to the wall by chains trained round pocket wheels or sprockets.

Abstract: The apparatus of this invention is designed to dispense material from a container. The container is placed on a base of the apparatus between a pair of hydraulically or pneumatically operated telescoping rods that are secured to the base. A cross bar which bridges the rods is secured to the top end of each rod. This cross bar carries two pump motors and a pair of spaced apart rods. The pair of spaced apart rods are each secured to the cross bar at one end and to a follower plate at the other end. The follower plate is surrounded by wipers and if the material that is to be dispensed must be heated before it can be dispensed, either one of two embodiments of an integrally fabricated combination heater-follower plate with wipers is utilized in place of the follower plate. In addition, optional heat radiating fins may be secured to the bottom of either of the two integrally fabricated combination heater-follower plates, if desired.