摘要:
A system is configured to employ a handheld device to provide feedback for use improving performance of an athlete performing an athletic act. The system includes a sensing system configured for inclusion in an item of athletic equipment, a database and a feedback module included the handheld device. The sensing system is configured to measure performance data when the item of athletic equipment is employed by the athlete in performing the athletic act. The database is configured to store performance data for items of athletic equipment previously employed by athletes. The feedback module is configured to wirelessly receive the performance data measured by the sensing system. The feedback module accesses the database including the stored performance data and generates a recommended adjustment for the athlete based on the identification of the item of athletic equipment, the measured performance data and the stored performance data.
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.
摘要:
A vibration damping nock for crossbow arrows includes an insert to absorb bow string slap, thereby to prevent damage to the nock during crossbow firing.
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:
An apparatus is configured for inclusion in an arrow. In one embodiment, the apparatus includes a sensor configured to provide data concerning one or more flight characteristics of the arrow in flight and a communication link coupled to the sensor, the communication link configured to communicate the data to a device external to the arrow.
摘要:
The crossbow arrow includes an arrow shaft having a head portion at one end and a tail portion at the other end and at least two wing members protruding beyond the transverse dimensions of the arrow shaft and extending substantially between the head portion and the tail portion. The wing members are made of a rigid and hard material and simultaneously perform the function of feathering for stabilizing the arrow in flight and the function of cutting blades for increasing destructive ability of the arrow. The technical effect is reduction in the number of parts used, reduction in a total weight of the arrow, increase of the construction rigidity, improvement of aerodynamic properties and destructive ability of the arrow.
摘要:
A lighted nock may include an arrow nock, LED/battery assembly, and an end cap. The end cap may be engaged with the inner diameter of a portion of an arrow shaft, and a portion of the LED/battery assembly may be engaged with the end cap. An arrow nock may be selectively positioned over a portion of the LED/battery assembly and/or engaged with the inner diameter of a portion of the arrow shaft such that the user may determine when the LED in the lighted nock is illuminated and when the LED is not illuminated.