Abstract: A refrigerator appliance includes a fresh food working fluid circuit and a freezer working fluid circuit. The fresh food working fluid circuit couples a fresh food cold side heat exchanger and a first chamber of a regenerator housing such that a first working fluid is flowable between the fresh food cold side heat exchanger and the first chamber. The freezer working fluid circuit couples the freezer cold side heat exchanger and a second chamber of the regenerator housing such that a second working fluid is flowable between the freezer cold side heat exchanger and the second chamber. A liquid-to-liquid heat exchanger connects the fresh food working fluid circuit and the freezer working fluid circuit for heat transfer between the first and second working fluid. A freezing temperature of the first working fluid is greater than a freezing temperature of the second working fluid.

Abstract: A thermoelectric temperature-control unit may include a first contact plate, a second contact plate, and at least one plate-shaped thermoelectric transducer. The thermoelectric transducer may have a first transducer side and a second transducer side facing away from the first transducer side. The thermoelectric transducer may be coupled to the first contact plate on the first transducer side and coupled to the second contact plate on the second transducer side. At least one of the first contact plate and the second contact plate may include a coupling zone on a respective inner side. A circumference of the coupling zone may be surrounded by a groove. A heat-conducting material may be arranged in the groove and along the coupling zone, and may directly contact the i) respective inner side and ii) one of the first transducer side and the second transducer side facing the respective inner side.

Abstract: A heat pump, the heat pump having a first end and a second end and further comprising: a working fluid and a chamber to contain said working fluid, the chamber having a first end and a second end corresponding to the first and second ends of the pump, one wall of the chamber acting as a heat exchanger between the chamber and a first heat transfer medium and one wall of the chamber, which may or may not be the same wall as the first mentioned one wall, acting as a heat exchanger between the chamber and a second heat transfer medium. The first heat transfer medium is located at a position between the first end of the pump and an intermediate portion defined at a position between the first and second ends of the heat pump, the first heat transfer medium operationally has a temperature T at the end nearest the intermediate portion, and operationally has a temperature higher than temperature T at the end located nearest the first end of the pump.

Abstract: A refrigeration cycle apparatus in which working refrigerant is a zeotropic refrigerant mixture containing at least a first refrigerant and a second refrigerant having a higher boiling point than the first refrigerant at the same pressure, the refrigeration cycle apparatus including at least a main passage in which a compressor, a first heat exchanger, a first expansion valve, and a second heat exchanger are sequentially connected, the first refrigerant having a property of disproportionation, the first refrigerant having a smaller composition ratio in the compressor than a composition ratio of the first refrigerant passing through the main passage.

Abstract: Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.

Abstract: An ejector and a refrigeration cycle apparatus having an ejector are provided. The ejector may include an ejector body having a suction portion into which a high pressure refrigerant and a low pressure refrigerant may be suctioned, and having a mixing portion provided at one side of the suction portion and configured to mix the high pressure refrigerant with the low pressure refrigerant; a nozzle movably provided in the suction portion, and configured to inject the high pressure refrigerant; a needle inserted into an end of the nozzle and configured to control a flow sectional area of the nozzle; and a nozzle drive configured to drive the nozzle so as to be relatively movable with respect to the mixing portion and the needle. As a flow sectional area of a high pressure refrigerant passage and a flow sectional area of a low pressure refrigerant passage are controlled, a driving efficiency of the ejector may be enhanced.

Abstract: The present invention relates to a recuperative trapping stage (3) for a refrigerator or refrigerator system. The recuperative trapping stage (3) comprises at least one first portion and at least one second portion configured for conveying fluids, wherein the first portion is in fluid communication with the second portion and wherein at least one part of the second portion is arranged within the first portion. Further the present invention relates to a refrigerator with at least one recuperative trapping stage (3) according to the present invention and with at least one cooler (1), the cooler (1) having at least one cold stage, wherein at least a part or section of the first portion of the at least one recuperative trapping stage (3) is thermally coupled, or at least configured to be thermally coupleable, to the at least one cold stage. Finally the present invention relates to a method of cleaning at least one recuperative trapping stage (3) in a refrigerator according to the present invention.

Abstract: An apparatus includes a first compressor, a first load, a second compressor, a second load, and a heat exchanger. The first compressor compresses a first refrigerant. The first load uses the first refrigerant to remove heat from a space proximate the first load. The first load sends the first refrigerant to the first compressor. The second compressor compresses a second refrigerant. The second load uses the second refrigerant to remove heat from a space proximate the second load. The second load sends the second refrigerant to the second compressor. The heat exchanger receives the first refrigerant from the first compressor and receives the second refrigerant from the second compressor. The heat exchanger transfers heat from the first refrigerant to the second refrigerant. The heat exchanger discharges the first refrigerant to the first load and discharges the second refrigerant to the second compressor.

Abstract: A control method includes initially operating a compressor at the same RPM as an operating RPM of the compressor during a previous cycle, adjusting the RPM in consideration of an operation rate of the previous cycle such that the RPM is increased when the operation rate is greater than a first set value, reduced when the operation rate is less than a second set value, and maintained when the operation rate is within a range between the first set value and the second set value, and operating the compressor at the adjusted RPM, the first set value being greater than the second set value.

Abstract: Apparatus and methods for constructing ice structures are provided. An apparatus for construction of a structure from ice may include multiple tubes. Each of the tubes may be disposed in an upright position. Each of the tubes may have a constant inner diameter and/or a closed bottom. The tubes may be disposed within a frame for transport of the tubes.

Abstract: A method of packing a temperature sensitive product utilizes a temperature controlled product shipper that includes a phase change material bladder which can be filled at the point of packaging. The temperature sensitive product is contained within an product box or master case, which is in turn packed inside an insulated liner and an outer box. The PCM bladder fits between the master case and the insulated liner and is filled with a preconditioned flowable PCM at the point of packing just before closing the box for shipment.

Abstract: An air-conditioning apparatus, including: a heat source-side heat exchanger including a plurality of heat transfer tubes each having a flattened shape and being arranged in parallel, the heat source-side heat exchanger being used at least as a condenser of a refrigeration cycle; and an outdoor fan for generating flows of air passing through the heat source-side heat exchanger in a predetermined air velocity distribution. The heat source-side heat exchanger is configured to exchange heat between the air and refrigerant flowing through the heat transfer tubes and includes a plurality of refrigerant paths, each including at least one of the plurality of heat transfer tubes and a plurality of two-phase paths for allowing gas refrigerant to flow into and out as two-phase refrigerant; and a plurality of liquid-phase paths for allowing the two-phase refrigerant flowing out of the plurality of two-phase paths to flow out as subcooled liquid refrigerant.

Abstract: A condensate collection system for use in HVAC equipment configured to remove condensate from a coil assembly before unintentional release into the surrounding environment and increase energy efficiency by preventing substantial air mixing within the air conditioner itself. The condensate collection system comprising, a tray configured to collect condensate and a lid configured to both prevent the mixing of air and collect condensate, operatively connected by a plurality of standoffs attached to the base of the tray and the bottom of the lid wherein the lid is supported by the tray and the plurality of standoffs. The system further may include one or more condensate drain channels configured to collect and drain condensate from the top of the lid into the tray and subsequently drain from the tray through an exit port.

Abstract: A refrigerator includes a partition wall provided between first and second storage chambers and having a partition wall insulator, an evaporator case arranged in the partition wall and communicating with the first and second storage chambers, an evaporator installed inside the evaporator case, a grill cover provided on a rear side of the evaporator case and configured to accommodate a blower fan, and support guides provided in the grill cover and supporting a rear portion of the evaporator, such that an internal storage space of the refrigerator is increased, and a withdrawal distance of a drawer provided in the refrigerator is increased.

Abstract: A method of fabricating a refrigerator cabinet or door includes forming a wrapper and an inner liner. The method further includes forming a vacuum insulated core comprising a permeable core material that is disposed inside an impermeable envelope. A sheet of prefabricated compressible foam material is positioned between the vacuum insulated core between the inner door liner and/or the door wrapper. The prefabricated compressible foam material may be cut from a sheet of foam having substantially uniform thickness prior to fabrication of the refrigerator door. The foam compresses to accommodate differences in spacing between the vacuum insulated core and the door wrapper and/or the door liner.

Abstract: A guide assembly for use in a door of a refrigerator comprises: a sliding rail; a movable member located above the sliding rail; and a connection member connected and fixed to the door. The sliding rail comprises a slide and a track both extending in the left and right direction. The movable member can move along the slide in a reciprocating motion in the left and right direction. The movable member also has a sliding groove extending in the frontward and rearward direction. The connection member comprises a first roller disposed at the sliding groove and capable of moving along the sliding groove in the frontward and rearward direction. The guide assembly further comprises a guide structure disposed under the connection member. The guide structure is movably disposed in the track to guide the movement of the door.

Abstract: An appliance having at least a freezer compartment. The appliance may include a pair of freezer doors accessing the freezer compartment. The freezer compartment may include one or more freezer shelves. A mullion may include a movable portion and a fixed portion for sealing the pair of freezer doors.

Abstract: An insulation structure for an appliance includes a cabinet having an outer wrapper and an inner liner, with an insulating cavity defined therebetween. Insulating powder material is disposed substantially throughout the insulating cavity. An insulating gas is disposed within the insulating cavity, wherein the insulating powder material is combined with the insulating gas and cooperatively defines a suspended state and a precipitated state. The suspended state is defined by the insulating gas in motion and the insulating powder being in an aeolian suspension within the insulating gas while in motion. The precipitated state is defined by the insulating gas being in a deposition state and the insulating powder being precipitated from the insulating gas and deposited within the insulating cavity.

Abstract: The invention described herein relates to reservoirs within appliances. The present invention includes a reservoir having one or more tanks having adaptors and tubing which may be thermally welded, crosslinked, and/or overmolded. Particular embodiments of the present invention include reservoirs, reservoir systems including a reservoir, processes for forming a reservoir, and processes for forming the aforementioned reservoir systems.

Abstract: There is disclosed a refrigerator; a lighting device provided in the storage chamber, a first door rotatably coupled to the case to open and close the storage chamber, an auxiliary storage chamber provided in the first door, a second door, a front panel formed of a transparent material, an evaporation treatment unit evaporated on an overall back surface of the front panel to transmit lights partially, a variable transparency film attached to a back surface of the evaporation treatment unit provided in the front panel to get transparent when the power is supplied, a frame unit with an opening having a corresponding size to an opening provided in the first door, an insulation panel distant from the front panel, a power supply unit for supplying an electric power to the variable transparency film and the lighting device, a proximity sensor provided in the second door to sense a user's approaching.

Abstract: A gas sensor includes a plurality of detectors discolored by reacting with different predetermined target gases, such that the gas sensor independently measures the amount of each target gas. A refrigerator for deciding a type and state of target food contained in a container by sensing a color change of a gas sensor mounted to the container including the target food, and a method for controlling the gas sensor are disclosed. The gas sensor for detecting a plurality of target gases includes a base and a plurality of detectors provided at the base. The detectors respectively detect different target gases, and each detector is discolored by reacting with each predetermined target gas.

Abstract: An oven for baking a thermally curable binder in a mat of mineral fibers, including plural compartments through which the mat of fibers passes successively, the mat being compressed and transported through the compartments by gas-permeable upper conveyors and lower conveyors, each compartment having a length along a direction of movement of the mat and including a mechanism introducing a hot air flow, located either below or above the fiber mat, and a mechanism extracting the air after having passed through the mat, respectively arranged either above or below the opposite face of the mat, so that the binder is progressively brought to a temperature higher than its curing temperature. In one compartment the mechanism introducing hot air includes air inlets that open partly on openings formed on a first lateral side of the compartment and partly on openings formed on the opposite lateral side of the compartment.

Abstract: An apparatus for curing thin films is disclosed. The apparatus includes a computer control system, a conveyance system, a flashlamp controller, and a flashlamp. The curing apparatus also includes a high average power, low-inductance cable connected between the flashlamp controller and the flashlamp. The low-inductance cable is smaller in diameter and is more flexible than the prior art and includes at least one liquid cooling line and multiple forward and return path wires interleaved in a regular hexagonal closed packed configuration such that every wire is adjacent to at least one cooling line and at least one wire of opposite polarity.

Abstract: Machines, systems and methods for curing materials, including organic and nonorganic materials, are described. In particular, machines, systems and methods for machines, systems and methods for materials, such as organic plant materials or inorganic materials, including cannabis materials. In particular, the present invention relates to machines, systems and methods for an automated drying and curing chamber machine for both personal and commercial applications, wherein the machine uses customized variable settings and laminar air flow dynamics via negative pressure to ensure the optimal curing and drying environment for plant materials are described.

Abstract: The present invention relates to a system for one pot solids recovery from solutions, slurries, emulsions, dispersions, gels, semisolids, and their like. Further the system can be used for controlled concentration of solutions, slurries, emulsions, dispersions, gels, semisolids, and their like to enable easy to operate cost effective energy efficient processes. The system is so constructed to enhance the contact between the liquid medium and the gaseous medium used in the process for effective heat transfer. The system can be used for controlled concentration and/or recovery of substantially dry solids in applications related to foods, nutraceuticals, natural products, pharmaceuticals, chemicals, etc.

Abstract: Setter plates are fabricated from Li-stuffed garnet materials having the same, or substantially similar, compositions as a garnet Li-stuffed solid electrolyte. The Li-stuffed garnet setter plates, set forth herein, reduce the evaporation of Li during a sintering treatment step and/or reduce the loss of Li caused by diffusion out of the sintering electrolyte. Li-stuffed garnet setter plates, set forth herein, maintain compositional control over the solid electrolyte during sintering when, upon heating, lithium is prone to diffuse out of the solid electrolyte.

Abstract: An apparatus for manufacturing molten iron includes: an iron ore-mixing/pre-reducing furnace receiving and mixing natural iron ore and oxidized iron ore to form a mixture, and heating or pre-reducing the mixture using a reaction gas to form a pre-heated or pre-reduced iron ore; an iron ore reduction furnace receiving the pre-heated or pre-reduced iron ore iron ore and reducing the pre-heated or pre-reduced iron ore using a reduction gas to form a reduced iron ore and produce the reaction gas; a molten gasification furnace receiving coal and the reduced iron ore and producing molten iron and the reduction gas; and an iron ore oxidizing-burning furnace receiving part of the reduced iron ore discharged from the iron ore reduction furnace and oxidizing the received reduced iron ore to produce the oxidized iron ore. The oxidized iron ore is supplied to the iron ore-mixing/pre-reducing furnace.

Abstract: This invention provides a method for recycling residual heat and dust in flue gas during reclaimed copper refining that can be used for recycling of high-temperature residual heat and moderate and low-temperature residual heat with high recycling rate, complete dust recycling and low costs.

Abstract: A Vacuum Arc Remelting controller apparatus wherein process control is accomplished primarily through control of pool power. Pool power being defined as the total energy flux into a top ingot surface of the VAR ingot. The controller apparatus of the present invention comprises a controller computer that transmits commands to the host furnace through an ethernet connection.

Abstract: A heat exchanger includes a separator member that divides a first flow passage from a second flow passage. The heat exchanger also includes a plurality of first hollow members that extend across the first flow passage at respective non-orthogonal angles. The plurality of first hollow members are fluidly connected to the second flow passage. Moreover, the heat exchanger includes a plurality of second hollow members that extend across the second flow passage at respective non-orthogonal angles. The plurality of second hollow members are fluidly connected to the first flow passage.

Abstract: A heat exchanger is disclosed including an array of interlaced conduits. The conduit array includes a first plurality of conduits connected to a first inlet header at one end of the first plurality of conduits and to a first outlet header at an opposite end of the first plurality of conduits. This first plurality of conduits provides a first fluid flow path from the first inlet header through the first plurality of conduits to the first outlet header. The conduit array also includes a second plurality of conduits crossing and interlaced with the first plurality of conduits. First and second fluid flow paths are provided through the first and second pluralities of conduits, and a third fluid flow path is through open spaces between the crossed interlaced first and second pluralities of conduits.

Abstract: The present invention relates to a vertical relay fluid storage barrel installed with fluid inlet and fluid outlet for whole or in part placement into natural thermal energy body in vertical or downward oblique manner, wherein a thermal energy exchanger is installed inside the relay fluid storage barrel temporarily storing thermal conductive fluid for external flow, the thermal energy exchanger is installed with fluid piping for the thermal conductive fluid passing through, to perform heat exchange with the fluid in the relay fluid storage barrel, and the fluid in the relay fluid storage barrel performs heat exchange with the natural thermal energy body.

Abstract: Apparatuses, systems and methods are directed to heat exchangers that are made of microchannel tubes and that have offset fins of various geometries and density. The heat exchanger coils can be implemented in various refrigeration and/or heating, ventilation, and air conditioning (HVAC) units or systems thereof.

Abstract: A heat exchanger tube is constituted by a flat tube body 14 shaped like a plurality of cylindrical tubes arranged mutually proximally in a plane and connected together at mutually proximate portions of the tubes as communicating portions 13. Cylindrical portions 15 corresponding to the cylindrical tubes of the flat tube body 14 have inner peripheries formed with swirling-flow-forming protrusions 16 directed along spiral trajectories coaxial with central axes O of the cylindrical portions 15 so that the respective cylindrical portions 15 may have individual swirling flows of the exhaust gas 10.

Abstract: The various technologies presented herein relate to fabrication and operation of a heat exchanger that is configured to extract heat from an underlying substrate. Heat can be extracted by way of an air gap formed between an impeller and a baseplate. By utilizing a pump to create an initial air gap that is further maintained by rotation of the impeller relative to the baseplate, a spring can be utilized that can apply a force of greater magnitude to the impeller than is used in a conventional approach, thus enabling the weight of the impeller to be negligible with respect to a width of the air gap, thereby conferring the desirable feature of orientation independence with respect to gravity with no performance degradation.

Abstract: A cooler includes a coolant flow path between a first cooling plate and a second cooling plate segmented into a plurality of flow path segments along a flow-path traverse direction. The plurality of flow path segments includes at least one first flow path segment and at least one second flow path segment. Each first flow path segment includes: a first inner plate partitioning an internal space thereof into a first space and a second space and having a first nozzle that jets the coolant from the first space toward the second cooling plate. Each second flow path segment includes: a second inner plate partitioning an internal space thereof into a first space and a second space and having a second nozzle that jets the coolant from the second space toward the first cooling plate. The first inner and second inner plates are aligned in the flow-path traverse direction.

Abstract: A method of localized cathodic protection of a heat exchanger, includes providing at least one fin formed from a first metal alloy; applying a sacrificial layer of a second metal to at least one region in the at least one fin; and connecting a refrigerant tube to the at least one fin; wherein the sacrificial layer of the second metal includes a metal from one of a zinc alloy or a magnesium alloy.

Abstract: A CNC milling machine and broaching tool for forming a magazine well in a firearm lower receiver, the magazine well having a forward end and a rearward end with a plurality of corners in the forward end and a plurality of corners in the rearward end. The CNC milling machine and broaching tool including a CNC milling machine for shaping a blank into a lower receiver having a guide hole with a length and a width and a broaching tool having a length less than the length of the guide hole and a width less than the width of the guide hole. The broaching tool having a single cutting edge for each of the plurality of corners in the forward end and the plurality of corners in the rearward end.

Abstract: The present device is a shortened recoil system designed to replace the AR-15 type recoil system, comprising the standard recoil systems of many commonly used rifles including the AR-10, AR-15, M-16 and M-4. This shortened recoil system removes or replaces the parts of the traditional recoil system located in the stocks of these rifles and place the entire recoil system within the receiver, while maintaining the alignment of the recoil system with the barrel of the rifle. A major advantage of the present system is that it allows the rifle to be fired with a folded stock or even with no stock at all, as no part of the present recoil system is located within the stock.

Abstract: Bolt carrier groups (BCGs) for weapon systems are provided herein. The BCG includes a carrier assembly, a bolt assembly, and a gas chamber disposed therebetween. The carrier assembly contains a carrier body that includes a shoulder, a piston surface, and an inlet port. The shoulder is disposed within the carrier body and contains a channel and the piston surface is located on the shoulder at least partially encompassing the channel. The inlet port extends through the carrier body and is configured for receiving propellant gas into the carrier body. The bolt assembly is at least partially contained within the carrier assembly and includes a bolt head opposite of a bolt tail where the bolt tail is at least partially protruding into the channel in the shoulder. The gas chamber is disposed between the carrier body, the piston surface, the bolt tail, and two gas seals disposed on the bolt assembly.

Abstract: Embodiments of the invention pertain to a magazine release interlock mechanism that enables a magazine of a rifle to only be released when the receiver is in an open position. The mechanism includes a translatable pin, a compression spring and a retainer. A fixture and a method for retrofitting a rifle are disclosed.

Abstract: A magazine for use in a firearm includes first and second feed lips having folded portions to reinforce the strength of the respective feed lips. In some embodiments, the strength of the feed lips may be further reinforced by applying one or more welds. The feed lips are capable of withstanding greater amounts of force to avoid failure. Accordingly, the disclosed magazine and method for providing the magazine reduce the “spring back” effect present in conventional magazine feed lips. This removes the additional step of having to over-form the feed lips that is performed when forming a magazine having conventional feed lips. The result is a method for providing a magazine with folded feed lips that are capable of withstanding greater amounts of force to avoid warping, deforming, or other failure, wherein the method for forming the magazine is more accurate, more consistent, and involves fewer steps.

Abstract: A magazine loader for loading a batch of rimmed cartridges into a tubular rifle magazine is disclosed. In embodiments, the magazine loader comprises an elongate body comprising a hopper portion and a tubular magazine receiving portion with a circular aperture for receiving the tubular rifle magazine. In embodiments, the body defines a feed passageway extending between the hopper portion and the circular aperture of the tubular magazine receiving portion. The body may define, extending along the feed passageway, a first cartridge orienting passageway defined by a first cartridge orienting portion, a second cartridge orienting passageway defined by a second cartridge orienting portion, a third cartridge orienting passageway defined by a third cartridge orienting portion, and a fourth cartridge orienting passageway defined by a fourth cartridge orienting portion.

Abstract: A collapsible pistol features enhanced safety, ease of use, and improved performance as compared to prior designs. The pistol is easily reconfigured from an open, ready-to-fire position to a closed or collapsed position that makes the pistol quite compact, safe, and readily concealable. The overall design of the pistol is such that the manipulation of the pistol into and out of the open, ready-to-fire position can be accomplished with a user having relatively small hands and/or relatively low grip strength.

Abstract: A locking box magazine safety device, comprising a magazine body comprising a rigid material shaped to conform to the internal dimensions and features of a box magazine well in a magazine-operated device; a lock cylinder comprising a key-operated lock and an operating rod, the operating rod configured to move when the appropriate key is used in the key-operated lock; and a pivoting arm configured to pivot about an axis, configured to be fixed in place by the movement of the operating rod, and configured to obscure the action of a magazine-operated device when fixed in place.

Abstract: A firing mechanism for a firearm is provided for reducing maximum trigger pull weight attributable to a sear and for reducing trigger pre-travel and over-travel distances. The firing mechanism includes a sear actuator with a trigger engagement leg that engages with a trigger bar at a reduced trigger travel distance. The firing mechanism also includes an increased trigger bar contact distance, thus reducing trigger pull weight.

Abstract: A muzzle brake for high power rifles, hand guns, machine guns, and artillery, exhibiting barrel stabilization and recoil reduction, by capturing gasses against an orifice end plate and redirecting these gases both out of the muzzle brake, and into the muzzle brake to fill the partial vacuum left by the exiting high pressure gases, by way of Major truncated socket forms, and to a lesser extent, with the use of Minor truncated socket forms, and their associated vent ports in an asymmetrical pattern that balances barrel lift, and recoil against the expected and recovered gases.

Abstract: A firearm assembly is disclosed. The firearm assembly may include a slide comprising a guide slot and a barrel attachment comprising a main body and an elongated guide beam. The elongated guide beam may be configured to slide within the guide slot.

Abstract: Devices for launching objects have a bow structure including a first structural element having a handle and a pair of risers extending outwardly from the handle. A second structural element extends outwardly and away from the handle and has a support member positioned to rest against a forearm of a user. A pouch is movably attached to the bow and is configured to accommodate placement of a desired object to be launched therein. One or more elastomeric bands extend between the pouch and peripheral ends of the first and second risers and thereby attach the pouch to the bow and operate to provide an energizing force when stretched to launch an object within the pouch. In an example, the object to be launched is a water balloon that is at least about 50 percent disposed within the pouch when in a pre-launch state.

Abstract: The present invention relates to a new type of speargun which uses a continuously-variable-transmission drive system for energy storage and transmission of motion of the ejection device (which may be a piston, a rubber element or a spring) to the spear. The continuously-variable-transmission drive system consists of a shaft (10), the winding drums (8-8.1-9) and the ropes (4), (11). In order to double, triple and quadruple the energy storage to the ejection device, the drive system consists of the respective number of shafts, winding drums and ropes.