91results about "Arrows" patented technology

A stabilizer for an aerial projectile comprises a conical portion with a first longitudinal axis, a first end of a lesser diameter, and a second end of a greater diameter. A tubular portion having a second longitudinal axis is coaxially conjoined at the first end of the conical portion. An external surface of the conical portion is engrailed or invected by a radial succession of flutes alternating with a radial succession of splines. For invected surfaces, at least a portion of any one flute from among the radial succession of flutes may comprise a planar surface. The surfaces of the flutes and splines may be longitudinally straight or may be helical surfaces. The stabilizer may be made of plastic and a portion of the plastic may be a recycled plastic material.

A method of engaging an arrow with an anti-dry fire system on a crossbow and an arrow assembly for crossbow that engages the anti-dry fire system behind the draw string. Matched weight arrows having lighted and non-lighted nocks are also disclosed.

A pressure-tight container pressure control assembly is configured to adjust internal pressure in a pressure-tight container. The pressure-tight container pressure control assembly has a housing having an attachment end. wherein the attachment end is configured to penetrate a wall of the pressure-tight container. A seal is arranged around the housing and configured to form an airtight seal between the housing and the wall. A pressure controller is arranged in the housing and configured to provide a controlled transfer of a material between the housing and the pressure-tight container through the wall thereby adjusting an internal pressure of the material within the pressure-tight container.

The invention discloses a kinetic energy and potential energy conversion guidance arrow. The arrow comprises an arrow shaft, an arrow head installed on the front portion of the arrow shaft and an arrow tail installed on the tail portion of the arrow shaft. The arrow shaft is a hollow rod, and an energy storage device used for converting kinetic energy into potential energy and then storing and transferring the potential energy is arranged in an inner cavity of the arrow shaft. The energy storage device comprises a sliding block capable of moving in the inner cavity and a spring arranged on one side of the sliding block. The arrow has the advantages that the hollow arrow shaft is adopted, the energy storage device composed of the compression spring and the sliding block is installed in the hollow arrow shaft, kinetic energy can be converted into elastic potential energy to be stored and transferred, meanwhile, the gravity center of the arrow body is adjusted, the stability when the arrow is shot is improved, the instability torsional pendulum phenomenon is eliminated, and the shooting range and precision after the arrow is shot are improved; the arrows are light arrows and are matched with the internal structure of the arrow shaft to facilitate the adjustment of the gravity center of the arrow body; the arrow head and the arrow tail are detachable, so that the integral assembly is more convenient; the same internal structure can be applied to arrows or crossbow arrows, and the application scene is wider.

The utility model discloses a kinetic energy and potential energy conversion guidance arrow. The arrow comprises an arrow shaft, an arrow head installed on the front portion of the arrow shaft and an arrow tail installed on the tail portion of the arrow shaft. The arrow shaft is a hollow rod, and an energy storage device used for converting kinetic energy into potential energy and then storing and transferring the potential energy is arranged in an inner cavity of the arrow shaft. The energy storage device comprises a sliding block capable of moving in the inner cavity and a spring arranged on one side of the sliding block. The arrow has the advantages that the hollow arrow shaft is adopted, the energy storage device composed of the compression spring and the sliding block is installed in the hollow arrow shaft, kinetic energy can be converted into elastic potential energy to be stored and transferred, meanwhile, the gravity center of the arrow body is adjusted, the stability when the arrow is shot is improved, the instability torsional pendulum phenomenon is eliminated, and the shooting range and precision after the arrow is shot are improved; the arrows are light arrows and are matched with the internal structure of the arrow shaft to facilitate the adjustment of the gravity center of the arrow body; the arrow head and the arrow tail are detachable, so that the integral assembly is more convenient; the same internal structure can be applied to arrows or crossbow arrows, and the application scene is wider.

The disclosed technology includes an arrowhead blade retention device. In one example, the arrowhead blade retention device may include a body including a central body and a plurality of ears that extend outward from the central body. A plurality of blade retainers may be defined at least partially within the plurality of ears and may include retainer outer walls. The plurality of blade retainers may be sized to receive arrowhead blades. A plurality of lateral walls may be defined between the retainer outer walls and an outer wall of the body.

A variable cutting diameter arrowhead includes a first blade, a second blade, and a ferrule, where the first blade and the second blade have a stowed position and a deployed position. The first blade and the second blade may be pivotally attached to the ferrule. In addition, a resilient member may be within a ferrule cavity, where the resilient member applies a force to a blade locking member that engages the first blade and the second blade to retain the blades in a stowed position. When the blades are in a deployed position, the distance between a distal end of the first blade and an outer surface of the ferrule is greater than the distance between the distal end of the first blade and the outer surface of the ferrule is in the stowed position.

Device (1) for fletching arrows for archery, comprising: a support frame (2), wherein the support frame (2) is designed such that an arrow shaft (3) can be inserted therein, a gluing station (7) comprising a second counter contour (8), and a positioning aid (9) into which a fletching element (10) can be inserted such that an adhesive surface (11) is exposed, wherein the positioning aid (9) has a shape contour (12) corresponding to the second counter contour (8), wherein in the gluing station (7) the fletching element (10) can be glued onto an arrow shaft (3) inserted in the support frame (2) when the shaped contour (12) of the positioning aid (9) is arranged in the second counter contour (8) of the gluing station (7).

The invention relates to a scientific device for studying animals, in particular marine animals. One aspect of the invention relates to a device (100) for investigating an animal, which device can be launched towards the animal for marking the animal and collecting a sample therefrom, the device comprising an arrow (1) comprising the following coaxial and removable elements: an arrow body (2), a hollow cutting dart (3) and an insert (5), the hollow cutting dart (3) comprises, in a rear portion (22), support means for propelling equipment and carries, in a front portion (21), the hollow cutting dart (3) capable of piercing the skin of an animal and drilling a sample of the animal in a hole (4) upon impact, the hollow cutting dart (3) externally bears an insert (5) against a first front shoulder (6) of the arrow body (2) to be fixed under the skin of the animal, the arrow body (2) comprising, at a rear portion (22), a second shoulder (7) for preventing penetration of the arrow body (2) into the animal body.

Disclosed herein is a multifunctional broadhead and universal ferrule for an archery arrow that has both mechanical and fixed configurations. The disclosure is directed to multifunctional mechanical arrow broadheads that deploy blades upon contact with a target and the ability to transition to a broadhead configured with the blades in a deployed and fixed position prior to target contact.

A fixed blade, two-blade broadhead for use on a hunting arrow that employs multiple, flat surface facets that automatically hold the correct bevel angle for edge sharpening when the broadhead is placed upon a sharpening stone.

An insert for securing a shaft of an arrow to a cutting tip includes a body member extending between a distal end and a proximal end, a stem extending from the distal end of the body member and formed integrally with the body member, the stem including a protrusion extending about a first end of the stem in a circumferential direction, and a sleeve including a countersink. The countersink engages the protrusion of the stem, such that, when the sleeve is disposed about the stem and positioned adjacent the distal end of the body member, the sleeve is coaxial with the stem. The cutting tip is secured to the proximal end of the body member.

The utility model relates to the field of arrow shafts, in particular to a luminous arrow tail which is provided with an arrow tail body, a luminous body, a battery and a string clamp seat, a placement cavity is formed in the middle of the arrow tail body, and the luminous body and the battery are arranged in the placement cavity; the luminous body is provided with a positive pole supporting foot and a negative pole supporting foot, the positive pole supporting foot is connected with the positive pole of the battery, the negative pole supporting foot is connected with the metal connecting wire, and the negative pole of the battery is connected with the negative pole connecting wire; according to the arrow tail, the arrow tail body is provided with the containing cavity, the light-emitting body and the battery are arranged in the containing cavity, and efficient utilization of space is achieved; the string clamp seat is used as a circuit on-off control part, when the string clamp seat is in contact with the metal connecting wire, the circuit is conducted, and the luminous body emits light, so that the circuit control is simple, direct and easy to operate and understand, the triggering function of arrow tail light emitting can be accurately realized, a switch button does not need to be additionally mounted, the structure of the arrow tail is simplified, and the cost is reduced. And the assembly difficulty and cost in the production process are reduced.

To provide an arrow feather that realizes high stability with a smaller blade area and can widen the tuning tolerance range. [Solution] The archery feather of the present invention is characterized by having a plurality of dimple structures on the surface of the feather. The dimple structures cause turbulence in the boundary layer on the surface of the feather, delaying separation and achieving high stability even with a small feather area.

An apparatus for adding weight to a rocket and a system and method for correcting a flight trajectory of a rocket with the added weight are disclosed and described. The arrow may include a compensator designed to fit on the stem of the arrow as a sleeve, and the diameter of the compensator is greater than the diameter of the stem of the arrow. The sleeve of the arrow is configured to enhance the structural strength of the front portion of the arrow shaft portion, and may be configured to enable a user to aim the arrow with a bow that has been tuned to a standard arrow. A sleeve of an arrow may be secured to the arrow by securing an arrow to an arrow insert having a frictional securing mechanism, wherein the arrow is secured to the arrow insert through a bore in the arrow sleeve.

The utility model discloses an arrow which comprises an arrow tube, at least two arrow wings are arranged on the peripheral side of the arrow tube at equal intervals, and the at least two arrow wings are symmetrical. One end of the connecting piece is combined with one end of the arrow tube, and the other end of the connecting piece is provided with a limiting part; one end of the arrow head is provided with at least one blade, the other end of the arrow head is provided with an assembling part, the assembling part movably penetrates through the limiting part to limit the arrow head, and the extending direction of the at least one blade and the extending direction of the at least two arrow wings are in the same horizontal plane.

A matched arrow set including a first arrow and a second arrow. The first arrow including: a first shaft, a first bushing coupled to the first shaft, and a first nock received in the first bushing. The second arrow including: a second shaft, a second bushing coupled to the second shaft, and a second nock received in the second bushing. The first shaft and the first bushing define a first weight, the second shaft and the second bushing define a second weight greater than the first weight, and a first arrow weight is substantially the same as a second arrow weight.

A stabilizer for an aerial projectile comprises a conical portion with a first longitudinal axis, a first end of a lesser diameter, and a second end of a greater diameter. A tubular portion having a second longitudinal axis is coaxially conjoined at the first end of the conical portion. An external surface of the conical portion is engrailed or invected by a radial succession of flutes alternating with a radial succession of splines. For invected surfaces, at least a portion of any one flute from among the radial succession of flutes may comprise a planar surface. The surfaces of the flutes and splines may be longitudinally straight or may be helical surfaces. The stabilizer may be made of plastic and a portion of the plastic may be a recycled plastic material.

The utility model relates to the technical field of arrow shaft manufacturing, in particular to a crossbow arrow which is provided with an arrow shaft, an arrow head is arranged at the front end of the arrow shaft, a string clamp is arranged at the tail end of the arrow shaft, arrow feathers are arranged at the tail end of the arrow shaft and comprise main feathers and auxiliary feathers, a string clamp seat is arranged between the arrow shaft and the string clamp, a string groove is formed in the string clamp seat, and a string clamp positioning groove is formed in the string clamp seat. The string clamp is provided with a string clamp positioning protrusion, when the string clamp positioning protrusion is inserted into the string clamp positioning groove, the main feather is perpendicular to the string groove, by arranging the string clamp positioning protrusion and the string clamp positioning groove, after the string clamp is installed on an arrow shaft, the arrow feather and the string clamp are kept at the set position, and when the string clamp is damaged, the arrow feather and the string clamp are not damaged. By means of accurate matching of the string clamp positioning protrusion on the string clamp and the string clamp positioning groove in the string clamp seat, the string clamp can be accurately installed on the string clamp seat, convenience and rapidness are achieved, it can be guaranteed that a main feather is perpendicular to the string groove during installation each time, stability and accuracy of an arrow during launching are guaranteed, and high shooting precision is kept.

To provide a scientific device for the study of animals, in particular, marine animals.SOLUTION: One aspect of the invention relates to a device (100) for the study of animals, which can be launched at an animal by a propulsion device in order to tag an animal and to collect a sample from the animal. The device includes an arrow (1) including the following elements, which are coaxial and removable: an arrow body (2), a hollow cutting dart (3) and an insert (5). The hollow cutting dart (3) includes, in a rear part (22), support means for a propulsion device and carrying, in a front part (21), the hollow cutting dart (3) capable of penetrating the skin of an animal on impact and of withdrawing a sample of the animal into a bore (4). The hollow cutting dart (3) externally carrying the insert (5) bearing against a first front shoulder (6) of the arrow body (2) and to be fixed under the skin of the animal. The arrow body (2) includes, at the rear part (22), a second shoulder (7) for stopping the arrow body (2) from penetrating into the animal.SELECTED DRAWING: Figure 3

A universal ferrule element for an arrowhead having a front end and an opposed rear end. The rear end is threaded and is configured to be coupled to a shaft of the arrow, and the front end has a first fastener-receiving opening and a first slot that communicates with the first fastener-receiving opening and that is sized and configured for mounting a first fixed blade. The universal ferrule element also includes a second slot formed in and extending longitudinally along the front end that is sized and configured for seating one or more of a fixed body blade, one or more front deployable blades, and one or more rear deployable blades. The universal ferrule element can also include and second and third fastener-receiving openings formed in the front end and positioned to communicate with the longitudinally extending slot.

In some embodiments, an arrow comprises a shaft and a notch in an end of the arrow. The notch is arranged to receive a bowstring. A first finger recess and a second finger recess are located in proximity to the notch. The first finger recess and the second finger recess comprise opposed diverging surfaces.

A muzzle arrangement for a speargun including a stock, the muzzle arrangement comprising: (a) a body including an aperture; and (b) a roller assembly including a rotatable shaft for a roller for an elastic band member, wherein the rotatable shaft is adapted to be removably mounted in the aperture via a bearing member and the roller is fixed relative to the rotatable shaft.

The utility model provides an integrally-formed spiral arrow feather convenient to replace, and a feather piece does not need to be bonded. The feather comprises an installation sleeve and a feather piece, clamping rings are arranged at the two ends of the installation sleeve, and the installation sleeve, the feather piece and the clamping rings are of an integrally-formed structure. The arrow feather does not need to be bonded through glue and is easy and convenient to install, adjust and replace. Compared with a bonding type arrow feather, the precision of the arrow feather is met, meanwhile, operation is convenient, the replacement cost and time are saved, and it is not needed to spend energy to learn the replacement method of the bonding type arrow feather. While the effect of the arrow feather is improved, the arrow feather replacement becomes simpler, more efficient and easier to master.

A miniaturized fiber Bragg grating (FBG) interrogation system may comprise a light source, a FBG sensor, and a photodetector. The FBG sensor may be configured to receive an optical signal from the light source, interact with a transmitted spectrum of the light source over a discriminating spectral domain, and generate a reflected optical signal representative of a change in a physical signal sensed by the FBG sensor. The discriminating spectral domain may be a region defined by at least one of the transmitted spectrum of the light source and a reflected spectrum of the FBG sensor. A width of the discriminating spectral domain may be based at least in part on a range of operation of the FBG sensor. In the discriminating domain region, a power of the reflected optical signal may change monotonically in response to a shift in the reflected spectrum of the FBG sensor. The photodetector may transform the reflected optical signal into an electrical signal. Additionally, the system may include a power management unit configured to reduce power consumption in order to prolong the lifespan of the system.

The utility model discloses a novel arrow pulling device, and relates to a bow and arrow auxiliary tool, in particular to a mechanical arrow pulling device which is suitable for outdoor and competition environments and can realize efficient clamping and easy pulling of arrows. The device comprises an arrow clamping mechanism, a manual driving rod, a fixed seat, a sliding rod and a hinge rod, a fixed sleeve is arranged on one side of the arrow clamping mechanism, the sliding rod penetrates through and is slidably connected into the fixed sleeve, and the bottom of the sliding rod is fixedly connected with the fixed seat; a hinge rod is hinged to the top of the sliding rod, and the other end of the hinge rod is movably connected to the top of the manual driving rod. The fixing base is a cylindrical base, and the sliding rod and the fixing base are of an integrated structure. When in use, the fixing seat is abutted against the cutting target to form a supporting seat for pulling out an arrow. The arrow pulling device is labor-saving in arrow pulling operation and suitable for being repeatedly used for a long time; the whole arrow pulling process does not damage the arrow shaft surface; meanwhile, the device is compact in structure and convenient to carry; the device can adapt to arrows of different sizes and has high universality.

A matched arrow set including a first arrow and a second arrow. The first arrow including: a first shaft, a first bushing coupled to the first shaft, and a first nock received in the first bushing. The second arrow including: a second shaft, a second bushing coupled to the second shaft, and a second nock received in the second bushing. The first shaft and the first bushing define a first weight, the second shaft and the second bushing define a second weight greater than the first weight, and a first arrow weight is substantially the same as a second arrow weight.