Abstract: This invention relates to a new and improved design associated with the fabrication and construction of a firearm sighting assembly. In accordance with the invention, the firearm sighting assembly defines a detachable structure capable of being affixed to the stock of a rifle wherein interchangeable elevational elements provide a stationery pedestal for enabling a marksman to aim the firearm while there is mounted upon the firearm a telescopic sight.

Abstract: A combat vehicle, in particular a combat tank, with a weapon mounted outside its longitudinal middle axis, that is mounted on a vertical axis rotatable ring mount linked by rotational rings to the hull of the vehicle. Within the rotational rings is a controllable coupling with plural coupling elements distributed on the circumference of the rotational ring. The coupling elements are, in a disengaged position, freely rotable in the ring mount and in an engaged position are unrotatable in the ring mount linked to the hull. During firing of the weapon, the coupling elements are controlled such that after the exit of the projectile from the weapon barrel but before the ending of the free weapon barrel recoil, the couplings are moved to an engaged position.

Abstract: An improved trigger mechanism for weapons having full automatic fire capability. Exertion of a first predetermined trigger pressure enables the disconnector to engage the hammer in a semi-automatic fire mode. Exertion of a second, greater trigger pressure disables the disconnector, enabling a full automatic mode of fire.

Abstract: A pistol is disclosed which is selectable between automatic and semi-automatic operation. A device is provided which permits existing semiautomatic firearms to be converted so that they may be fired in either fully automatic or semiautomatic mode. A novel trigger bar and selector are disclosed.

Abstract: The disclosed invention relates to a sealing device for the rotor blades of a gas turbine engine which permits real time adjustment to be made of the clearances between the rotor blade tips and the sealing structure. The sealing shroud around the turbine wheel is formed of sectors, each sector being attached to a monolithic short response time ring and a monolithic long response time ring. Ventilating air from upstream of the turbine wheel is directed onto the rings such that the sectors are caused to radially expand or contract in compliance with the expansion or contraction of the tips of the rotor blades during stabilized and transient engine operational modes. A small positive clearance between the sealing sectors and the blade tips is maintained throughout the range of the engine's operation.

Abstract: A rigid improved penetration resistant composite of the type comprising a plurality of fibrous layers comprising network of fibers in a polymeric matrix selected from the group consisting of thermoplastic polymers, thermosetting resins or a combination thereof, at least two of said layers secured together by a securing means, said improvement comprising a securing means which comprises fiber stitches wherein the average stitch length is greater than the average stitch path, a process for forming the composite and articles fabricated from said composite.

Abstract: An automatic pistol adapted to repetitively fire blank ammunition includes a frame, a barrel unit supported by the frame and a slide unit reciprocally mounted on the frame between the forward and rear position. The barrel unit and/or frame incorporate structure which enables the pistol to operate in a highly reliable, repetitive manner without visible alteration to the pistol. A method for forming a blank firing pistol is also disclosed.

Abstract: A firearm includes a locking device for receiving a removable key, and a latch element movable by an inserted key either to a locking position or to a releasing position. The locking device is located such that the latch element, when in the locking position, interferes with the operation of an essential operative component of the firearm to disable the firearm from firing a cartridge, and when in the releasing position permits the essential operative component to operate properly and thereby to enable the firearm to be used for firing a cartridge.

Abstract: An improved turbine vane structure is disclosed which enables more effective cooling and the reduction of temperature gradients along its length. The hollow interior of the vane is divided into three separate cavities, two upstream cavities and a downstream cavity. The downstream cavity is partially filled with a body of porous, heat transfer material. Cooling air flows through the downstream cavity in a direction counter to the hot gases passing over the exterior surface of the vane so as to increase the heat exchange properties. The two upstream cavities lie adjacent to each other and are supplied with cooling air from opposite directions to achieve a counterflow, heat exchange effect. Several sets of cooling holes are provided through the vane wall to communicate with the interior cavities and supply cooling air to the exterior surface of the vane.

Abstract: This invention relates to a magazine for a repeater firearm, preferably for an automatic pistol which, while approximately preserving its external dimensions, is modified so that the usable capacity inside the magazine is reduced. In one refinement, the invention relates to a magazine with a magazine tube (1), a magazine spring (4), a feeder (7) and a magazine base (2). To reduce the usable capacity of the magazine, a spacer (6) is attached to the magazine base (2) facing the magazine spring (4). The magazine spring (4) is also shortened so that, in the absence of the spacer (6), it does not exert sufficient force on the feeder (7) to reliably advance the last cartridges (9) to the magazine lips on the end of the magazine tube (1). In addition to or instead of the features described above, the spacer (6) can be designed so that in its absence, and if the magazine is filled with bullets, the magazine base is partly or completely detached from its mounting on the other end of the magazine tube (1).

Abstract: Convergent flaps of a jet engine nozzle are controlled by actuating cylinders through actuating levers hinged to the fixed structure of the engine and by connecting rods. Divergent flaps are slaved to the convergent flaps by connecting rods themselves driven by the actuating levers. Cold flaps not hinged to the divergent flaps are slaved to the convergent flaps by further connecting rods connected to the first-named connecting rods.

Abstract: A compensator attachment for a pistol which is formed of an elongated housing within which is included a box-like internal chamber that is open to the bottom surface of the housing. The barrel and slide of the pistol is to be locatable within the internal chamber with the barrel connecting with a compensating chamber mounted in the front end of the housing. A gas discharge port arrangement connects with the compensating chamber with this port arrangement to eject gas expelled from the barrel to reduce the recoil of the pistol. The back end of the housing includes a threaded fastener which is to be used to tightly secure the housing to the aft end of the slide. The housing is to be quickly removable from the slide.

Abstract: A firearm (W) is for discharging a projectile such as bullet (B) through a barrel (L). The firearm includes a firing mechanism (F) for firing the bullet through the barrel. The firing mechanism includes a trigger (T) which is operable by the person using the firearm to fire the weapon. A firing pin (P) is operatively connected to the trigger for contacting a cartridge (C) and effecting discharge of the bullet. A gun lock (200) is provided to inhibit operation of the firing mechanism by enclosing trigger (T). A cover piece (202) fits about the trigger. A blocking pin (228) fits behind the trigger and is movable by an electro-magnet (240) which is activated by a processor (218) which evaluates a word or phrase spoken into an audio recognition unit (214) mounted on the cover piece. Received audio signals are directed to the audio recognition unit. If a received audio input corresponds to a predetermined audio frequency signal, the blocking element is moved from its inhibiting position to its enabling position.

Abstract: An improved firearm with a grip which positions the index finger to be parallel to the barrel of the firearm. The grip contains a recess or other alignment mechanism along the side of the barrel so that the user is able to position their index finger along the edge of the barrel and parallel to the barrel. This permits the user to obtain a bio-feedback through the index finger as the actual direction where the gun is pointing. Further, in the preferred embodiment, a thumb activated trigger is positioned at the top of the gun so that during firing of the gun, a twisting torque is not exerted on the firearm.

Abstract: A grip assembly for a gun having a downwardly projecting handle, which assembly includes two body panels to be received at opposite sides of the handle, and a grip unit having two side panels at outer sides of the body panels and a forward portion connecting the grip panels in front of the handle. The grip panels are preferably connected to the body panels by two screws and nuts. A third screw extends through an opening in one of the body panels, to hold it in place, and is desirably at a location to be covered by the corresponding grip panel. The third screw may be engageable with a third nut which is carried by the other body panel and is at a location to be covered by the other grip panel.

Abstract: A coupling for removably mounting accessories on the end of a gun barrel wherein the gun barrel includes at least one lug spaced from the barrel end. A coupling adapter receives the gun barrel end and lugs and includes lug retaining recesses which receive the lugs upon relative rotation between the gun barrel and adapter occurring. A compressible spring located within the adapter biases an annular lug engaging sleeve wherein lug retention within the adapter recesses is maintained by the spring and only an axial movement of the adapter on the gun barrel is required to disengage the lug and its retaining recess to permit rotation of the adapter for quick adapter mounting and removal.

Abstract: An impingement cooling arrangement which avoids thermal cycling fatigue failures in the cooled member and cooling baffle member while retaining permanent rigid attachment of the cooling baffle member and cooled members at their periphery. The baffle includes an array of stress relieving smoothly curved in cross section furrows or grooves dispersed over the baffle surface and provides for intentional heat conduction to the furrow valley portions as a stress relieving mechanism. Heat conduction to the furrow valley portions is aided by the force of pressurized impingement cooling air at the baffle surface.

Abstract: A releasable bolt lock for two position safety firearms which can be actuated separate from the safety lever and which allows the unloading of the rifle with the safety in the "safe" or "on" position.

Abstract: A universal firearm disabling and alarm signalling system is attained by providing a construction which is easily mounted to any firearm to prevent its unwanted use while also incorporating an automatic alarm signal which is immediately activated whenever the protected firearm is accessed by unauthorized persons. By employing the present invention, any movement of the firearm, or attempt to remove the disabling and alarm signalling system of the present invention from the firearm, causes an alarm signal to be continuously generated, preventing any unauthorized or unwanted use of the firearm. In the preferred embodiment, the universal, combined firearm disabling and alarm system of the present invention incorporates lock means cooperatively associated with the alarm signal generator which is quickly and easily mounted to any desired firearm for preventing unwanted use of the firearm and remains in secure locked interengagement therewith until disengaged by the user.

Abstract: A trailer for transporting an environmentally safe modular storage unit caining hazardous materials over the highways at speeds approaching about fifty five miles per hour. The trailer has a rectangular shaped frame and a hitch assembly extending longitudinally forward from front end of the rectangular shaped frame. The hitch assembly is coupled to a tow truck or other suitable vehicle to allow the trailer and the modular storage unit to be towed from a hazardous material site to a collection or storage site. The trailer is a tandem axle trailer equipped with electrical brakes and a lighting system. The underframe of the trailer includes a tandem axle wheel system which has four wheels and an oil lubricated hub and drums.