Abstract: A transport object is sealed in a sterilized sealed bag including a volume adjuster, the volume of which is changed according to a temperature change. The sealed bag is placed into a metal sealed container. The sealed container is placed into a temperature-controlled metal soaking container. In a state where the soaking container is fixed to the inside of an insulated container with an insulation material disposed around the soaking container, the internal pressure of the sealed container is maintained at a constant atmospheric pressure by changing the state of a pressure adjustment valve from a closed state to an open state, the pressure adjustment valve being provided in an air ventilation tube which is disposed to extend to the outside of the soaking container and the insulated container from the sealed container.

Abstract: An evaporator includes a conduit and a spine fin assembly positioned on an outer surface of the conduit. The spine fin assembly is wound about the conduit such that a pitch between windings of the spine fin assembly varies along a length of the conduit. A related refrigerator appliance and method for forming an evaporator are also provided.

Abstract: A heating, ventilation and air conditioning (HVAC) system includes a condenser (18) flowing a flow of refrigerant therethrough, and a falling film evaporator (12) in flow communication with the condenser. The falling film evaporator includes a plurality of evaporator tubes (38) through which a volume of thermal energy transfer medium is flowed and a distributor (42) to distribute a flow of liquid refrigerant over the plurality of evaporator tubes. The distributor includes a distributor box (46) and a distribution sheet (48) positioned at a bottom surface of the distributor box having a plurality of ports (56) therein to distribute the flow of liquid refrigerant downwardly over the plurality of evaporator tubes. A plurality of baffles (56) is positioned at the distribution sheet to divide the distributor box into a plurality of compartments to ensure a homogeneous flow of the liquid refrigerant is delivered through the plurality of ports.

Abstract: A thermal transpiration flow heat pump includes an evaporator that vaporizes a medium, a condenser that condenses the medium, and a medium transport unit that is provided between the evaporator and the condenser. The medium transport unit includes a medium-temperature heat source portion that is placed on a side of the evaporator, a high-temperature heat source portion that is placed on a side of the condenser, and a thermal transpiration flow pump that is placed between the medium-temperature heat source portion and the high-temperature heat source portion.

Abstract: A two chamber heat transfer unit configured such that hazardous air can circulate through one of the chambers of the heat transfer unit and any potential ignition source components are contained in another pressurized chamber of the heat transfer unit.

Abstract: A working-fluid circuit may include an indoor heat exchanger, a variable-capacity compressor and a control module. The variable-capacity compressor pumps working fluid through the indoor heat exchanger. The control module may control the compressor and operate the compressor in one of a first capacity mode and a second capacity mode based on a demand signal, outdoor-air-temperature data and a compressor runtime.

Abstract: An ice cube tray device for creating ice plugs for a beverage container is provided. The beverage container has an opening. The ice cube tray device comprises an ice tray having a top surface, a bottom surface opposite the top surface, a first end, and a second end opposite the first end. A plurality of recessed receptacles are formed in the top surface of the ice tray between the first end and the second end. Each of the recessed receptacles have a substantially rounded cylindrical configuration thereby creating ice plugs having the same configuration as the recessed receptacles that are capable of being received within the opening of the beverage container.

Abstract: A refrigerator includes a cabinet that includes a refrigerator compartment and a freezer compartment. The refrigerator includes a refrigerator compartment door that is located at a left or a right side of the refrigerator compartment, wherein an ice maker and a dispenser are located at the refrigerator compartment door. The refrigerator includes a main water tank that is located in the refrigerator compartment, and that is configured to cool water. The refrigerator includes a water purifying device that is located at the cabinet, and that is configured to purify water. The refrigerator includes a sub-water tank that is located on the refrigerator compartment door, and that is configured to additionally cool water cooled by the main water tank. The refrigerator includes a water supply path that is defined by connections between the water purifying device, the main water tank, the sub-water tank, the dispenser, and the ice maker.

Abstract: This disclosure is directed to an ice storage device and a refrigerator. The ice storage device comprises an ice storage box, an ice discharging door is provided at an outlet of the ice storage box, an ice crushing device is provided inside the ice storage box, the ice crushing device comprises at least one fixed ice crushing blade and at least one moving ice crushing blade which is provided on a rotating shaft and rotates synchronously to the rotating shaft, and the rotating shaft is connected to a driving device; and at least one stirrer is provided on the rotating shaft and rotates synchronously to the rotating shaft.

Abstract: Systems and devices cool content of individual beverage containers without sacrificing portability and cooling performance, and/or maintaining beverage containers cold. Exemplary implementations provide container having enclosed vertical double-wall structure with integral horizontal base defining interior space within enclosed vertical double-wall structure, or having wall structure formed from sheet of flexible material folded to form base and sealed along opposite sides of sheet to define interior space within wall structure and also having interior pocket formed by interior wall attached to interior surface wall structure. Interior space within wall structure is capable of accommodating at least one beverage container. Cooling material is sealed inside the double-wall structure, or removably placed inside interior pocket, to cool and/or maintain cold content of beverage container placed in interior space of container.

Abstract: A thermally insulated receptacle includes a body, a cover, and a loudspeaker. The body defines a cavity. The cover is operatively coupled to the body and movable relative to the body to selectively cover the cavity. The loudspeaker is pivotably coupled to the body. The receptacle may include a spigot that is configured to be fluidly coupled to a bottle.

Abstract: An installation and method for freezing and cold storage of palletized product. A chiller is provided in the interior of a cold storage warehouse space that maintains the temperature of ambient air within the space below freezing. A plurality of racking structures each define an air flow chamber having air intake openings on opposite sides thereof and an air outlet to enable freezing air to be drawn into the chamber through the intake openings and exhausting into the warehouse space. Pallets on pallet guides are pressed against the intake openings such that freezing air is drawn through the palletized product to thereby quickly freeze the product. The pallet structure and air flow chambers are arranged in spaced-apart rows to enable a forklift to pass down the aisles so as to place and remove the palletized product.

Abstract: Refrigerator appliances and active air filter assemblies therefor are provided. A refrigerator appliance includes a main controller configured to control refrigerator appliance operations, and a connector port in communication with the main controller and accessible within a fresh food chamber, the connector port configured to provide at least one of data communication with the main controller or electrical power. The refrigerator appliance further includes an active air filter assembly which includes a housing, an inlet aperture defined in the housing, an outlet aperture defined in the housing, and a fan disposed within the housing and operable to actively flow air through the inlet aperture and outlet aperture. The air filter assembly further includes a connector plug connectable to the connector port to receive the at least one of data communication with the main controller or electrical power.

Abstract: A door assembly configured to open and close a storage compartment of a refrigerator. A refrigerator including a body; a storage compartment placed inside of the body and provided with an open front side, and a door assembly configured to open and close the open front side of the storage compartment. The door assembly includes a front panel forming a front side and opposite sides of the door assembly, a rear panel coupled to the opposite sides of the front panel in a rear side of the front panel, a door cap configured to cover an upper side or a lower side of the door assembly, and a connection member provided with a first connection unit coupled to the front panel and a second connection unit coupled to the door cap.

Abstract: A drawer system includes a drawer and a drawer cover. The drawer can include an open top and be configured to be supported at a supporting structure, such as a refrigerator fresh food compartment for example, for selective sliding movement outwardly from the supporting structure and sliding movement inwardly toward the supporting structure. The drawer cover can be configured to be mounted at the supporting structure in engagement with the drawer at the open top of the drawer for movement directly vertically upwardly at the supporting structure away from the open top of the drawer when the drawer is moved outwardly from the supporting structure and for movement directly vertically downwardly at the supporting structure toward the open top of the drawer when the drawer is moved inwardly toward the supporting structure.

Abstract: A refrigerator appliance including a refrigerated chamber defined by a liner positioned within a cabinet is provided. At least one track extends generally along a vertical direction of the refrigerator appliance attached to or positioned adjacent to the liner. Additionally, a shelf assembly is configured to attach to the track. An electrical bar extends at least partially within the track and a probe of the shelf assembly is configured to extend into the track and press against the electrical bar along a transverse direction. The probe may accordingly make an electrical connection with electrical bar when the shelf assembly is attached the track.

Abstract: A system and method for cooling and liquefying a gas in a heat exchanger that includes compressing and cooling a mixed refrigerant using first and last compression and cooling cycles so that high pressure liquid and vapor streams are formed. The high pressure liquid and vapor streams are cooled in the heat exchanger and then expanded so that a primary refrigeration stream is provided in the heat exchanger. The mixed refrigerant is cooled and equilibrated between the first and last compression and cooling cycles so that a pre-cool liquid stream is formed and subcooled in the heat exchanger. The stream is then expanded and passed through the heat exchanger as a pre-cool refrigeration stream. A stream of gas is passed through the heat exchanger in countercurrent heat exchange with the primary refrigeration stream and the pre-cool refrigeration stream so that the gas is cooled.

Abstract: A process for producing and purifying a synthesis gas stream that contains CO- and H2-produced from a hydrocarbon-containing feed in a gas production unit, CO2 is separated from the synthesis gas stream and CO is cryogenically separated from the synthesis gas stream. CO2 that makes up 5% to 30% by volume in the synthesis is reduced to less than 10 ppm by volume by temperature swing adsorption. The temperature swing adsorption takes place upstream of the cryogenic separation of CO. The CO2 is adsorbed using a disordered adsorbent bed wherein the adsorbent is cooled by means of indirect heat transfer from the adsorbent to the heat transfer medium during adsorption and the adsorbent loaded with CO2 is heated by indirect heat transfer from the heat transfer medium to the adsorbent to effect desorption of CO2.

Abstract: An assembly including at least one furnace including at least one infrared radiation emitter, the furnace including an air inlet and an air outlet, wherein the assembly also includes a ventilation casing including a main air inlet and a main air outlet, the air inlet of the furnace and the air outlet of the furnace cooperating with the main air outlet of the ventilation casing and the main air inlet of the ventilation casing respectively, the ventilation casing being designed to supply air to the furnace.

Abstract: A rotary furnace using microwave as the energy is provided, and it includes kiln head which runs through and is connected to rotary kettle, multiple parts of the kiln head are equipped with microwave feeding inlet which is used to introduce the external microwave sources into rotary kettle to heat material; kiln head is connected to feeding mechanism, and rotary kettle is set up with collecting opening and discharging mechanism. The Rotary furnace makes use of the microwave energy to rapidly heat material inside rotary kettle, and rotates rotary kettle at the same time, to make material more uniformly heated and improve material pyrolyzing efficiency, and it can greatly improve pyrolyzing and separating efficiency of material, and effectively reduce energy consumption; it also avoids secondary pollution to environment caused by burning of heating energy, thus effectively improves economic and social benefits.

Abstract: An apparatus for heating plastic preforms includes a first transport device that transports the plastic preforms in a separated manner, wherein said first transport device has a plurality of recesses for receiving the plastic preforms, and a second transport device that takes over the plastic preforms transported by the first transport device and transports the plastic preforms along a predetermined transport path. The apparatus has at least one sensor device that detects at least one measured value that is characteristic of at least one of the two drive devices, and a control device that is designed to control the drive device for moving the holding elements as a function of this characteristic measured value.

Abstract: A stave cooler for a metallurgical furnace includes a panel-like body having a front face for facing the interior of the metallurgical furnace, an opposite rear face, an upper face, an opposite lower face, and two side faces. At least one internal coolant passage is arranged within the panel-like body. The panel-like body is provided with a ledge on its front face extending between the side faces for being arranged in a horizontal plane. At least one protection element is provided for covering at least part of an upper face of the ledge. The protection element includes a first lateral portion, a second lateral portion, and a central portion. The said first and second lateral portions each include a widened front section and a narrow connection section. The panel-like body is provided with at least one through hole arranged for passing each of the lateral portions and the central portion of therethrough in turn.

Abstract: A method for fabrication of ordinary porous media and fractured porous media with controllable characteristics is disclosed. The method comprises the steps of: providing a cylindrical container and sealing one end of the cylindrical container. The method further comprises fastening the sealed end of the cylindrical container with a lacy sheet for connecting to a vacuum pump and packing the cylindrical container with glass beads to achieve predetermined porosity and permeability using vacuum. Finally placing the packed container in a furnace until reaching a retention time at a predefined rate of temperature enhancement, and separating a fabricated core from the packed container.

Abstract: The invention relates to a thermal lance (1) having adequate flexibility and concentrated effective heating capacity for the fusion cutting and/or piercing of any type of material, for example, for piercing and opening tapping passages in melting furnaces that use plugs made of clay or mixtures of, inter alia, alumina, silica and carbon. The thermal lance comprises at least four tubular profiles, one disposed externally and three disposed internally, and more than seventeen cavities housed inside said lance, wherein at least two of said four tubular profiles have different cross-sections, wherein each tubular profile is disposed in a contiguous manner in relation to the other tubular profiles, and wherein each tubular profile is selected from tubular profiles having a circular, square, triangular, hexagonal, oval, or multi-point star-shaped cross-section. The invention also relates to the use of the thermal lance for the fusion cutting and/or piercing of any type of material.

Abstract: One embodiment is directed to an apparatus comprising a firing furnace comprising a heating chamber configured to fire a metallization layer of photovoltaic devices and a cooling chamber configured to cool the photovoltaic devices that have been heated by the heating chamber. The cooling chamber comprises lights to light anneal the photovoltaic devices to reduce light induced degradation as the photovoltaic devices are cooled in the cooling chamber. The cooling chamber of the firing furnace is configured to use residual heat from heating performed in the heating chamber of the firing furnace as heat for the light annealing of the photovoltaic devices. Light annealing is not performed in the heating chamber of the firing furnace.

Abstract: A condenser of the present invention includes a container into which steam flows, cooling pipes which are provided inside the container and cool the steam to form condensed water, at least one extraction pipe for extracting air included inside the container, at least one extraction hole which is formed in the extraction pipe and through which an interior of the extraction pipe and an interior of the container communicate with each other, and a cylindrical cover which is provided with a predetermined gap spaced from the extraction pipe and covers the at least one extraction hole to regulate an inflow of the condensed water into the at least one extraction hole. A plurality of the extraction holes are formed around the extraction pipe, and the cylindrical cover is provided radially outside the extraction pipe with the predetermined gap spaced therebetween.

Abstract: A submersible heat exchanger for transferring heat between fluid and water in an underwater environment includes a pipe having a length. The pipe includes a wall defining an interior passageway configured for fluid to flow through. A first fin is disposed on the pipe and extends from the wall in a first direction. The first fin extends in the longitudinal direction along the pipe. A second fin is disposed on the pipe and extends from the wall in a second direction different from the first direction. The second fin extends in the longitudinal direction along the pipe.

Abstract: A heat exchanging device (2), in particular a fluid/air heat exchanger, having individual fluid-conducting collecting chambers (6, 10) which in each case have an inlet (8) or outlet (12) for fluid supply and discharge and which are connected to one another via duct-like fluid guides (14) which control the temperature of, in particular cool, a fluid flow during operation of the device by means of an air flow which flows in duct-like air guides which are separated from the fluid guides (14) in a medium-tight manner, is characterized in that, in order to construct the overall heat exchanging device (2), at least one further collecting chamber (18; 20, 22) is inserted between collecting chambers (6, 10) which are arranged on outer sides which lie opposite one another, which further collecting chamber (18; 20, 22) is arranged parallel to the collecting chambers (6, 10) which lie on the outside, and into which further collecting chamber (18; 20, 22) all the fluid guides (14) which are connected to a collecting cham

Abstract: A heat exchange device utilizing variable tube materials is provided. In one particular embodiment, the heat exchange device is an evaporative condenser with a multi-pass tube bundle. The first few tube passes (typically 1-3 tube passes) of the tube bundle, which in operation are typically exposed to superheated refrigerant gas, are comprised of a material that is highly resistant to corrosion (e.g., 316/316L stainless steel). The remaining tube passes, which in operation are typically exposed to a lower-temperature refrigerant (i.e., saturated two-phase or subcooled liquid), are comprised of one or more lower-cost, less corrosion-resistant material (e.g., 304/304L stainless steel).

Abstract: A heat exchanging board (1) and a board-type heat exchanger provided with the heat exchanging board (1). The heat exchanging board (1) comprises a board main body (11). Multiple recessed portions (12) and multiple raised portions (13) are disposed on the surface of the board main body (11). The multiple recessed portions (12) and the multiple raised portions (13) are disposed in a staggered manner along a first direction (51) and are disposed in a staggered manner along a second direction (S2) perpendicular to the first direction (S1). Top portions of the multiple raised portions (13) are provided slender forms along the first direction (S1). The heat exchanging board (1) and the board-type heat exchanger provided with the heat exchanging board (1) can ensure good strength of the heat exchanger in the case of ensuring the heat exchanging efficiency, and can reduce manufacturing cost of the heat exchanging board (1).

Abstract: The present invention relates to a plate heat exchanger system with a plate heat exchanger (10) comprising an inlet (11) and an outlet (12) of a primary circuit (13), an inlet (14) and an outlet (15) of a secondary circuit (16), at least one plate (17) separating the two circuits in a housing of the plate heat exchanger from each other, and preferably a pipe which connects the primary circuit to a heating device. For improving heat transfer between the primary circuit (13) and the secondary circuit (16), the plate heat exchanger (10) is according to the invention in the direction of gravity (G) arranged such that the plane (E), in which the plate (17) is located, is inclined relative to the gravity vector (G) and the horizontal (H).

Abstract: A mobile terminal includes: an upper plate; and a lower plate having a size corresponding to that of the upper plate and having at least a portion spaced apart from the upper plate to form a passage to allow fluid to flow therein, wherein the upper plate and the lower plate form a vapor chamber, at least one of the upper plate and the lower plate is formed by bonding dissimilar-metals, and the passage includes an absorption layer in which a working fluid moves and a vapor channel formed on the absorption layer and allowing vapor evaporated from the absorption layer to move therein, and a fluidic channel in which the working fluid moves is formed within the absorption layer.

Abstract: The disclosed invention provides power conversion equipment in which the thermal resistance of thermal connections is reduced. A structure for cooling a heat generator includes a heat generator having at least one cooled surface having protruding convex portions formed thereon, a heat receiving spacer in which hollow portions into which the convex portions are inserted are formed, clamping members which press and clamp the heat receiving space and the heat generator sandwiched therebetween, and a cooler which cools the heat receiving spacer. In an engagement state in which the heat generator and the heat receiving spacer are engaged by the clamping members, a distance between the cooled surface and the end faces of the convex portions is smaller than a distance between the cooled surface and a face, facing either of the clamping members, of the heat receiving spacer.

Abstract: A refrigerant heat dissipation apparatus has an evaporator, a condenser having a first condensing tube and a second condensing tube, a first refrigerant tube, two second refrigerant tubes, and a refrigerant. The first refrigerant tube is connected between the top of the evaporator and an upper part of a first condensing tube. The second refrigerant tubes are respectively connected with a lower part of the first condensing tube and a lower part of the second condensing tube, so as to form a multi-flow closed-loop cycle. The refrigerant is filled into the multi-flow closed-loop cycle. The controlling of cycling direction of the refrigerant achieves the efficiency in heat dissipating of the refrigerant heat dissipation apparatus.

Abstract: An exhaust heat recovery device includes: an exhaust pipe through which exhaust flows; a heat recovery material arranged in the exhaust pipe and recovering heat of the exhaust; a heat medium flow passage through which heat medium recovering the heat recovered by the heat recovery material flows; and an exhaust restriction portion arranged in the exhaust pipe and allowing the exhaust to pass through only part of the heat recovery material.

Abstract: A heat exchanger for heating fresh water using heat from wastewater in a shower or bathtub. The heat exchanger has a drain pan, a heat exchanger unit that is arranged in the drain pan, and a distributing element for distributing draining wastewater over the heat exchanger unit. The heat exchanger unit has multiple tube portions that follow one another sequentially and are connected to one another by diverting portions. Each two horizontally running tube portions that follow one another and that are thus connected by a deflecting portion are arranged one over the other, and wastewater, which is dripping or flowing down, is sprinkled on or flows over the tube portions one after the other.

Abstract: A heat exchanger element includes a tubular body with a wall at least partly delimited by an inner surface and an outer surface. The wall has a twisted shape on a segment of the body. The inner surface has a groove with a shape corresponding to the wall. The groove extends helically over the segment. On the segment, the outer surface has a diameter between 18 and 30 millimeters, the groove has a pitch of less than 3.5 millimeters and a depth such that the ratio of the pitch at a real power between 1.5 and 2.5 to the depth is less than a threshold value close to 24. A heat exchanger, for example of condenser type, can include such an element.

Abstract: To provide a heat sink capable of enhancing heat dissipation performance. Cylindrical bodies 3 have openings 3a of which inner and outer sides are opened on front ends and are provided with through-holes 3b communicating the inner side and the outer side on side walls at the base end side. The cylindrical bodies 3 are provided in a standing manner in a state where portions at the base end side penetrate through a supporting main body 2 and project into a gap s1, the through-holes 3b are opened to the gap s1, and portions at the front end side also project from the surface of the supporting main body 2 at the opposite side to the gap s1. An atmosphere in the gap s1, which contains heat from a cooling target object 9, is capable of being made to flow into the cylindrical bodies 3 through the through-holes 3, circulate in inner spaces of the cylindrical bodies 3, and be released to the outside through the openings 3a on the front ends.

Abstract: A wire spacer (20) for spacing two adjacent heat transfer plates (2, 4) of a plate type heat exchanger (1). The wire spacer (20) is formed by a bent wire (22) that is alternatingly abutting the two adjacent heat transfer plates (2, 4), while extending along the fluid channel (6, 8) of the heat exchanger (1). The wire spacer (20) has first and second support segments (24, 26) providing a plate supporting function, and spacing segments (28) for maintaining a minimal vertical spacing (?y) between the heat transfer plates (2, 4) during heat exchanger operation. The first lower support segments (24) are formed by wire paths (32) that span a plane (S1) coinciding with a top surface of the lower heat transfer plate (2), and allow the wire spacer (20) to keep its orientation fixed with respect to the heat transfer plates.

Abstract: A heat exchanger may include a heat exchanger block including a plurality of flat tubes held at a longitudinal end side in a respective rim hole of an associated tube plate. The respective rim hole may have at least two mutually opposite and substantially straight long sides and at least two mutually opposite narrow sides. A brazed connection may be disposed between at least one of the at least two long sides of at least one of the respective rim holes and a corresponding one of the flat tubes arranged therein, and the brazed connection may have an undulating brazing boundary. At least one of the plurality of flat tubes may include at least one partition. The undulating brazing boundary may have a high point that defines an increased thickness in relation to a plane running through two opposite groove bases disposed in the tube plate.

Abstract: The present invention is directed to a manifold for directing cooling fluid and/or gas to a heat exchanger in a flow configuration designed to optimize heat transfer from the heat exchanger. The manifold can take many different forms such as a layered construction with distributed inlet paths, local outlet paths, a central collection changer and a path for fluid removal. The manifold can be formed from a metal, plastic, rubber, ceramic, or other heat resistant material known to or conceivable by one of skill in the art. The manifold can also be combined with any type of heat exchanger known to or conceivable by one of skill in the art to form a thermal management unit. To optimize overall properties such as low pressure drop, high heat transfer, and excellent temperature uniformity of the thermal management unit, the manifold can be graded, expanded and scaled as needed.

Abstract: A cooling module in a motor vehicle may include at least one heat exchanger block and at least one holding device. The at least one holding device may secure the cooling module on the vehicle body. The at least one holding device may be designed as a cast component.

Abstract: A heat exchanger is provided with: an air coolant line through which air coolant (AC) flows; a compressed air branching line through which compressed air flows; a plurality of heat exchange units for performing heat exchange between the air coolant and the compressed air, the heat exchange units being disposed side by side in a flow direction of the air coolant; a flow rate-adjusting valve for adjusting the flow rate of the compressed air flowing through the second heat exchange unit of the plurality of heat exchange units, the second heat exchange unit being positioned at a downstream side in the flow direction of the air coolant; temperature sensors for detecting the temperature of the compressed air; and a control unit configured to adjust the degree of opening of the flow rate-adjusting valve in accordance with the compressed air temperatures detected by the temperature sensors.

Abstract: A membrane heat exchanger comprising a first planar sheet a second planar sheet coupled to the first planar sheet at least by a seam and at least one fluid chamber defined by the first and second planer sheet and the seam and comprising a first and second end, the fluidic chamber extending a length of the membrane heat exchanger.

Abstract: A process is presented for the online cleaning of the tubes in a heat exchanger. The process includes adding an abrasive material to the gas stream to be cooled, and abrading any particles or catalyst fines that have adhered to the tube walls. The abrasive material is to be a water soluble solid to allow for the removal of the abrasive material in a quench tower.

Abstract: A slide for a rifle with a slide operating mechanism, which is movable in the longitudinal direction of the rifle, and a slide element, which can be moved by the slide operating mechanism between a locked position and an unlocked position. The slide operating mechanism is connected to the slide element via a control element, which is movable transversely to the slide element and is designed as a connector that cooperates with the slide element for its displacement between the upper, locked position and the lower, unlocked position.

Abstract: A short-length, belt fed machine gun for convenient use includes: (A) a receiver having a length in the range of about 17.75 inches to about 20.3 inches, (B) a barrel assembly, and (C) a gas cycling assembly. A gas port of the barrel assembly has a width of between about 0.063 inches and 0.200 inches. The distance between a center of the gas port and the breach of the barrel is between about 7.605 inches and about 9.395 inches. The gas cycling assembly features a unique polymer kinetic energy dampener assembly located longitudinally rearward of the operating rod, which is useful in achieving a desired cycle rate of the gun (e.g., about 600 rounds per minute (RPM)) and in minimizing muzzle climb. A unique mounting bushing selectively, removably mounts to the gas cylinder in order to achieve a shortened gun with many of the advantages of conventional longer weapons.

Abstract: A gas regulator for a rifle, having: an elongated member having a first end and a second end; a head portion located at the first end; a pair of openings passing through the elongated member, wherein one of the pair of openings is larger than the other one of the pair of openings; a recessed area located at the second end; and wherein the gas regulator is located in a front sight of the rifle, the sight, comprising: a mounting block; a tower pivotally mounted to the mounting block for movement between a first position and a second position; a first locking mechanism comprising a plurality of spring biased members for retaining the tower in the first position and the second position, the plurality of spring biased members being configured to allow movement of the tower between the first position and the second position in response to a force applied to the tower; and a second locking mechanism configured to lock the tower in the second position, wherein the second locking mechanism must be manually released be

Abstract: A gas regulator for a rifle, having: an elongated member having a first end and a second end; a head portion located at the first end; a pair of openings passing through the elongated member, wherein one of the pair of openings is larger than the other one of the pair of openings; a recessed area located at the second end; and a pair of detent openings located on a portion of the elongated member, the pair of detent openings being spaced from each other and located within another recessed area located on a surface of the elongated member between the first end and the second end, wherein one of the pair of detent openings is closer to the first end than the other one of the pair of detent openings.

Abstract: A light-weight firearm and related fabrication method are described for a wear resistant feed ramp for chambering cartridges from an ammunition magazine. In one embodiment, the firearm includes a barrel and a frame defining a magazine well and cartridge feed ramp. A wear insert formed of a different material than the frame is implanted in the feed ramp adjacent to the barrel chamber. The wear insert is then machined in situ to shape forming an obliquely angled wear surface. After machining, both the frame and implanted wear insert undergo a surface hardening process together. The surface hardened wear insert has a greater surface hardness than the surface hardened frame and is better adapted to resist wear after repeated chambering of rounds. In one non-limiting example, the frame may be hard anodized aluminum and the wear insert hard anodized titanium.