摘要:
An arrow with a non-circular central bore may allow for differential flexural rigidity in the shaft. A non-circular central bore, such as in the form of a bore with a rounded polygon, or more specifically a reuleaux triangle, may also provide self-alighting features when paired with a nock or arrowhead with similar shaped elements. This may allow a user to properly nock an arrow without resorting to manual alignment of the nock and fletchings. The central bore may extend along an entirety of the shaft, or only along a portion of the shaft. The non-circular central bore may be incorporated in an arrow shaft with a round exterior cross section, or with an arrow with a non-circular exterior cross section, such as in the form of a rounded polygon, or more specifically a reuleaux triangle.
摘要:
An arrow with self-aligning features allows a user to properly nock the arrow without resorting to manual alignment of the nock and fletchings. Engagement of a removable nock and shaft, each with a rounded polygonal cross-section, such as a reuleaux triangle, allow for a fixed relative angular position between the nock and the shaft without the use of an adhesive. This allows for proper position between the nock and index vane to ensure a more accurate path of the arrow during flight. Similarly, the reuleaux triangle cross-section of the shaft may engage an arrow head with a similar reuleaux triangle for accurate alignment between the shaft and the arrow head.
摘要:
A lighted nock assembly is disclosed for use with an archery projectile. A portion of an insert fits within, and is shouldered against, the tail end of the projectile shaft. The insert includes a recess terminating in a floor portion, and a face to bear against the nock shoulder. An LED/battery assembly fits within the recess of the insert abutting the floor portion. A nock fits over the LED/battery assembly and into the recess of the insert. Ready-to-fire, the LED/battery assembly comprises an activation gap between the LED lamp and the body of the battery assembly. A gap, greater than or equal to the activation gap, is left between the shoulder of the nock and the face of the insert. When fired, the bow string drives an internal surface of the nock into the front end of the LED/battery assembly and illuminates the LED lamp.
摘要:
A self-centering nock is provided for use in a well-balanced nock-arrow or nock-bolt assembly. The self-centering nock includes compliant projecting protrusions or compliant arms that are substantially rotationally symmetric about a cross section normal to a main axis of the self-centering nock. The compliant projecting protrusions or compliant arms may be received in bolts that have bores of differing internal dimensions.
摘要:
Example nocks, arrowheads and/or arrowhead inserts include a tapered annular flange axially engaging a correspondingly tapered edge on a tubular arrow shaft. The tapered flange and edge help prevent the end of tubular arrow shaft from deforming radially outward when substantial axial force is applied to the nock, arrowhead and/or arrowhead insert.
摘要:
A self-centering nock is provided for use in a well-balanced nock-arrow or nock-bolt assembly. The self-centering nock includes compliant projecting protrusions or compliant arms that are substantially rotationally symmetric about a cross section normal to a main axis of the self-centering nock. The compliant projecting protrusions or compliant arms may be received in bolts that have bores of differing internal dimensions.
摘要:
A projectile, either a crossbow bolt or an arrow, having a compressible nock. The projectile has a shaft having a front end portion and a rear end portion, an arrow point positioned on the front end portion of the shaft, multiple vanes extending from the shaft between the front end portion and the rear end portion, and a nock at least partially extending from the rear end portion. The nock has a compressible end portion that is compressible toward the shaft to maintain the nock on a bowstring when the bolt is launched. In an example case, the rear end portion is flat at its rear surface and, when the bolt is launched from a crossbow, the bowstring deforms the compressible end portion of the nock to form a groove or notch in which the bowstring is seated while the bolt is launched.
摘要:
A lighted nock system includes a lighted nock assembly and a plurality of adaptors. The lighted nock assembly includes a shaft insertion portion having a shaft outer shape and shaft outer dimension. The first adaptor includes an internal opening having an internal size and internal shape configured to mate with the shaft insertion portion of the lighted nock assembly. The second adaptor includes the same internal opening size and shape as the first adaptor. The outer diameter of the second adaptor is different than the outer diameter of the first adaptor. A plurality of adaptors having different sized outer diameters, but the same internal configurations, can be provided in a single package with the lighted nock assembly. The lighted nock assembly can include a rotatable lockout collar to prevent unintended activation of the lighted nock assembly.
摘要:
Mechanically attachable fletching is disclosed herein for a projectile having a shaft having an exterior surface. The mechanically attachable fletching includes at least one fin, a connection section bordering the at least one fin, and at least one mechanical fastener for attaching the fletching to the exterior surface of the shaft via the connection section. Also disclosed herein are methods for mechanically attaching fletching to the shaft of the projectile. Also disclosed herein are illuminated projectiles. Also described herein is a projectile having a shaft, a projectile head, and at least one fin. The projectile head preferably has a plurality of layers, the head end preferably being associated with the projectile head. Also described herein is a projectile that includes a shaft, a suction head, an outer head casing, and at least one fin. The suction head is preferably associated with the head end. The at least one launcher engager is preferably associated with the suction head. Two halves of the outer head casing preferably sandwich the suction head and the head end.
摘要:
The visibility of an arrow after it has been fired is increased by illuminating arrow fletchings in which light injected into the nock is further injected into the fletchings.