Abstract: A variable displacement vaned fuel pump (10) is suitable for inclusion in a fixed displacement fuel control system for a gas turbine engine. The pump includes two track elements (34,36) having cam surfaces (42) which engage cam followers (44) on a cam actuation ring (40). A link (66) having a predetermined spring load maintains the track elements in their radially inner maximum displacement positions until the vane force and pressure forces drive the track elements radially outwardly, moving the actuation ring against its spring load. Displacement of the pump is reduced in the radially outward positions of the track elements which reduces the required bypass flow to hold a head constant across a fuel metering valve and attendant fuel heating.

Abstract: A fuel injection fuel supply system for a combustion engine has a single fuel injector valve effective for injecting all of the required fuel in equal amounts to each of the combustion cylinders of the engine through chamber means exposed to superatmospheric air; the injected fuel and the superatmospheric air combine to form a fuel-air emulsion which flows to the intake of each of the combustion cylinders.

Abstract: A lightening arrestor system (30) for a pad mounted distribution transformer (18') incorporated in an underground loop distribution circuit has a lighting arrester (32) secured to the transformer parking stand (P) and attached to the pad ground connection. The arrester has a well (38) into which a cable elbow (A) formerly mounted upon a primary terminal bushing (H1B) is inserted. The arrester includes a varistor assembly including metal oxide disks (58). An elbow arrester (24') is mounted upon the terminal bushing which formerly mounted the cable elbow. The arrester obviates the employment of a feed-through device (28).

Abstract: An electrical discharge machining electrode for small hole machining. The electrode is of a rod shape and includes a spiral shaped groove extending along the electrode body with a length greater than the thickness of the workpiece. The groove terminates proximate the electrode machining face for receiving a stream of liquid coolant and promoting its flow through the gap during machining. The electrode machining face is blunt and relatively planar in shape.

Abstract: An air scoop is shown for use in combination with a vehicle having an engine air intake port located in a side panel of a body panel of the vehicle; the scoop has a forward inlet and a rearward discharge end; the scoop extends outwardly beyond the normal contour of the vehicular body so that the inlet functions as a scoop-like inlet while the discharge end serves to direct such air as flows into the air scoop into the engine air intake port.

Abstract: An automotive compartment cover assembly, for use in covering a compartment such as, for example, the windowed rear compartment of a hatchback or a station wagon type automotive vehicle, has in effect, a variable length elongated hollow cylindrical roller about which is rolled a flexible cover sheet member; at least one compression spring serves to provide a longitudinal resilient force in order to axially accommodate and provide for the variable length of the roller; at least one pre-stressed coiled retractor spring is provided for producing a rotational tension or force on the cover sheet member in a manner whereby such tension or force does not increase linearly as the cover sheet member is being extended from the roller.

Abstract: A shaft seal assembly 10 for a high speed centrifugal pump has a primary seal (30) and a secondary seal (32). During normal operation the primary seal has its nose (38) in firm engagement with a seal face (28) and the secondary seal has its nose (42) in light engagement with the seal face. Upon failure of the primary seal, the nose of the secondary seal is urged into firm engagement with the seal face. An orifice (58) in the nose of the secondary seal allows for controlled leakage which indicates primary seal failure.

Abstract: A generally round handguard assembly (10) for a rifle barrel (18) has substantially identical bottom and top mating sections (26, 28). The handguard assembly has a shell with an upper and lower row of vent holes (36) formed by two shell sections (31), an outer liner, formed by two outer liner sections (35), with upper and lower rows of vent holes (58) and an inner liner, formed by two inner liner sections (33), with upper and lower pairs of laterally opposed rows of vent holes. An outer annular volume (94), an intermediate annular volume (92) and an inner annular volume (90), which are in fluid communication, are defined within the shell by its inner periphery and the liners. Air flow in the inner volume cools the barrel and gas tube (22) and air flow in the outer and intermediate volume maintains the shell at a reasonable temperature during repeated firings.

Abstract: A firearm (10) adapted for blowback operation has a receiver incorporating a longitudinally reciprocatable bolt assembly (24) having an inertia firing pin (40) which is movable between retracted or recoil and battery positions in the receiver (14). A trigger (68), including a sear (72), is pivotally mounted in the receiver. A hammer (74) is pivotally mounted in the receiver in such a manner that movement of the bolt assembly from the battery position to the recoil position urges the hammer into a cocked position. The hammer includes a first sear abutment (82) to engage the sear on the trigger, a second sear abutment (84) and a stop abutment (86). A disconnector (76) is pivotally mounted on the trigger pin (70). The disconnector includes a hook sear abutment (88) on an intermediate portion which is adapted to engage the second sear abutment on the hammer when the trigger is in a depressed position.