Abstract: A polymer electrolyte is disclosed that includes a polymer backbone containing a high dipole moiety and a low Tg moiety and a salt combined with the polymer. In addition to other possible benefits, the high dipole moiety in the polymer backbone may improve the conductivity of the polymer electrolyte. Additionally, the combination of a moiety with a high dipole moment with a moiety to impart low Tg may result in a high dielectric constant (for example, greater than 10).

Abstract: Electrodes are disclosed that include a polymer electron donor, an electron acceptor, a lithium salt, and a solvent. In select embodiments, the components of the electrode may form a charge-transfer complex polymer (CTCP) to achieve high local lithium concentration and endow fast lithium mobility. In another aspect, an improved polymer electrolyte that uses block copolymers composed of monomers is described in which one of the monomers contains electron-rich pi systems and the other of the monomers contains electron-poor pi systems. The block copolymers may be combined with a salt to form the polymer electrolyte.

Abstract: Usually when a gas port of a gas operated firearm is oversized or eroded, or a firearm is being modified, for example, to use a suppressor, the barrel often has to be replaced with a barrel having a smaller sized gas port; this is particularly wasteful when the original barrel is otherwise serviceable for many more thousands of rounds. The present invention reduces the need to replace the barrel.

Abstract: A quick release gas block securing system is provided. The quick release gas block securing system quickly secures the gas block and a gas nozzle attached thereto to a rifle barrel, and conversely, quickly releases the gas block and gas nozzle attached thereto from the rifle barrel.

Abstract: The invention is a bolt carrier with a modified cam path that prevents undesired contact between a cam pin and the sidewall of an upper receiver.

Abstract: In one embodiment the invention is a hand guard, comprising: a generally hollow cylindrical body having a rail securing top surface; a top Picatinny rail securable to the rail securing top surface. The top rail is in slidable engagement with the rail securing top surface such that the top Picatinny rail is removable from the top surface. The generally hollow cylindrical body is populated with vent holes. In another embodiment an upper receiver is provided, the upper receiver includes a front face located at a front end of the upper receiver, the upper receiver having a Picatinny rail atop thereof, the Picatinny rail having a last rail located at a front end of the Picatinny rail, the last rail is aligned with the front face. In another embodiment the hand guard has a fixed Picatinny rail atop thereof. At least one plug is optionally provided for fitting into vent holes.

Abstract: The invention is a bolt carrier with a modified cam path that prevents undesired contact between a cam pin and the sidewall of an upper receiver.

Abstract: A quick release gas block securing system is provided. The quick release gas block securing system quickly secures the gas block and a gas nozzle attached thereto to a rifle barrel, and conversely, quickly releases the gas block and gas nozzle attached thereto from the rifle barrel.

Abstract: In one embodiment the invention is a hand guard, comprising: a generally hollow cylindrical body having a rail securing top surface; a top Picatinny rail securable to the rail securing top surface. The top rail is in slidable engagement with the rail securing top surface such that the top Picatinny rail is removable from the top surface. The generally hollow cylindrical body is populated with vent holes. In another embodiment an upper receiver is provided, the upper receiver includes a front face located at a front end of the upper receiver, the upper receiver having a Picatinny rail atop thereof, the Picatinny rail having a last rail located at a front end of the Picatinny rail, the last rail is aligned with the front face. In another embodiment the hand guard has a fixed Picatinny rail atop thereof. At least one plug is optionally provided for fitting into vent holes.

Abstract: In one aspect of the invention a buffer retaining pin is provided that comprises an elongate body. The elongate body comprises a cylindrical body portion. The elongate body has a longitudinal axis, a proximal end, and an opposite open distal end. The cylindrical body has an inner chamber in communication with the open distal end. A tooth is located at the proximal end of the elongate body. The tooth is integral with and extends from the cylindrical body such that the cylindrical body portion extends between the tooth and the open distal end. The tooth defines a top side, a left side, a right side, a front face, and a rear face. The front face of the tooth extends in a plane such that the plane of the front face intersects the longitudinal axis.

Abstract: In one aspect of the invention a buffer retaining pin is provided that comprises an elongate body. The elongate body comprises a cylindrical body portion. The elongate body has a longitudinal axis, a proximal end, and an opposite open distal end. The cylindrical body has an inner chamber in communication with the open distal end. A tooth is located at the proximal end of the elongate body. The tooth is integral with and extends from the cylindrical body such that the cylindrical body portion extends between the tooth and the open distal end. The tooth defines a top side, a left side, a right side, a front face, and a rear face. The front face of the tooth extends in a plane such that the plane of the front face intersects the longitudinal axis.

Abstract: In one embodiment the invention is a hand guard, comprising: a generally hollow cylindrical body having a rail securing top surface; a top Picatinny rail securable to the rail securing top surface. The top rail is in slidable engagement with the rail securing top surface such that the top Picatinny rail is removable from the top surface. The generally hollow cylindrical body is populated with vent holes. In another embodiment an upper receiver is provided, the upper receiver includes a front face located at a front end of the upper receiver, the upper receiver having a Picatinny rail atop thereof, the Picatinny rail having a last rail located at a front end of the Picatinny rail, the last rail is aligned with the front face. In another embodiment the hand guard has a fixed Picatinny rail atop thereof. At least one plug is optionally provided for fitting into vent holes.

Abstract: An apparatus for impregnating web material with thermally curable impregnating resin, The apparatus includes an impregnating trough in which the web material is brought into contact with the impregnating resin and an inlet line which leads to the impregnating trough and through which the impregnating resin is introduced into the impregnating trough. The apparatus also includes a heating device structured and arranged for heating the impregnating resin, wherein the heating device is associated with the inlet line and heats the impregnating resin in the inlet line.

Abstract: The invention relates to a hybrid resin, which is suitable in particular for impregnating paper webs. The hybrid resin according to the invention can be advantageously used for improving the mechanical properties of counteracting layers in multilayer boards.

Abstract: An apparatus for impregnating web material with thermally curable impregnating resin, The apparatus includes an impregnating trough in which the web material is brought into contact with the impregnating resin and an inlet line which leads to the impregnating trough and through which the impregnating resin is introduced into the impregnating trough. The apparatus also includes a heating device structured and arranged for heating the impregnating resin, wherein the heating device is associated with the inlet line and heats the impregnating resin in the inlet line.

Abstract: In a process and a mechanism (10) for drying and pre-condensing impregnates (14), which are made of foil-type web material impregnated with synthetic resin, impregnate (14) is irradiated with microwaves. In that way, impregnates (14) can be obtained, which, although the impregnating resin is free of melamine, is appropriate for pressing with a base body made of wood material.

Abstract: The invention relates to a hybrid resin, which is suitable in particular for impregnating paper webs. The hybrid resin according to the invention can be advantageously used for improving the mechanical properties of counteracting layers in multilayer boards.

Abstract: A self-cleaning gas operating system for a firearm having a conventional bolt carrier assembly is disclosed comprising: a nozzle assembly having a nozzle in direct communication with a port on the muzzle; said nozzle assembly nested within a piston cup having a vent, a connecting rod operationally linking the piston cup to a spring loaded operating rod which is substantially co-axial to a bolt carrier key having a striking portion, said striking portion having a concave strike face in contact with said operating rod, wherein gas discharged from a fired cartridge displaces the piston cup and causes the operating rod to strike the strike face displacing the bolt assembly.