Abstract: A tail fin assembly for a guided projectile which is capable of withstanding the high pressures experienced during launch, which is also capable of stabilizing the projectile during initial flight shortly after emergence from the cannon or large gun barrel and which is also capable of freely spinning relative to the projectile front section for the remainder of the flight to minimize projectile roll to accomplish all of these capabilities sequentially during a single launch. The assembly includes the projectile and a rotatable member, preferably a tail fin assembly with tail fins which is rotatable about the projectile major axis and which is normally locked against rotation about the projectile. A locking structure is provided for locking the rotatable member against the rotation which is responsive to a predetermined condition to permit rotation of the rotatable member about the projectile.

Abstract: A reticle for a guidance seeker for spinning projectiles comprises a substrate; a pattern of a plurality of alternating light modulating structures, such as opaque and light transmitting, or light absorbing and light reflecting areas on the substrate such that an image of a target moving on the substrate will generate a plurality of pulses corresponding to the number of lines crossed by the image, the number of pulses increasing as the image moves outwardly from the center of the reticle; and a distinguishable, unambiguous, and singly periodic feature of the pattern, which is readily detectable every time the target image moves circumferentially, completing a full circle around the center of the reticle.

Abstract: An arm stabilizer apparatus is attachable to a belt and includes a base assembly which includes belt connectors for connecting the base assembly to the belt. A hinge is connected to the base assembly, and an adjustable-length arm stabilizer assembly is connected to the hinge. The apparatus can be used in three modes: an in-use orientation; one non-use orientation in which the apparatus is oriented above the belt; and another non-use orientation in which the apparatus is oriented below the belt. The in-use orientation is adjustable, and the apparatus returns to an adjusted in-use orientation from a previous non-use orientation. In the in-use orientation, the apparatus is oriented in an arm-reception orientation, whereby a portion of a person's upper arm can be supported by the adjustable-length arm stabilizer assembly for aiming a weapon, such as a rifle or bow. An adjustable-length arm stabilizer assembly is pivotally connected to the hinge pin.

Abstract: Bolt mechanism for an electronic firearm adapted to eliminate rearward axial motion of the bolt plug with respect to the bolt body on closing the bolt assembly.

Abstract: This disclosure relates to a weapon rest which is characterized by its simplicity and stability. It comprises a base, a shaft, a cradle movably attached to the shaft and a tensioning means situated between the cradle and the shaft. This tensioning means imparts unparalleled stability to the cradled weapon permitting the use of scopes of extraordinary powers of magnification.