Abstract: An arrowhead of the expandable or mechanical broadhead type, i.e., having blades which unfold to increase the effective cutting area of the arrowhead, includes a tip with a rearwardly-extending actuating member which triggers one or more blades into an open state when the tip strikes a target game animal. The blades are pivotable with respect to a body into which the actuating member extends, and they include ears against which the actuating member presses upon tip impact to trigger the blades open. A latching spring maintains the blades in a closed state until the tip and actuating member are driven rearwardly by tip impact, and the tip and actuating member are preferably maintained in a forward and ready-to-trigger state by an opening spring. The actuating member may extend between the blade ears after the blades are triggered open to fix the blades in the open state until the tip is pulled forwardly to withdraw the actuating member from the ears.

Abstract: The subject invention provides a bow string release mechanism over and under bow string retaining jaws and an axial adjustment mechanism for altering the distance of the jaws from a wrist strap. The release mechanism generally comprises a release mechanism, a wrist strap, and a rotatable shaft assembly joining the release mechanism and the wrist strap, wherein the axial distance between release mechanism and the wrist strap can be adjusted by axial rotation of the shaft assembly. The release mechanism comprises a trigger mechanism, a body in which the trigger mechanism is mounted and actuated and a sear head attached to the body and actuable by the trigger mechanism. The sear head has a first fixed over and under sear element and a second pivotally attached over and under sear element, movable relative to the first fixed sear element, into and out of engagement therewith upon actuation of the trigger mechanism.

Abstract: The invention provides an arrow nock receiver that forms a barrier around an arrow nock seated therein and physically separates the area in which the arrow nock seats from the area in which a bow string release may be attached. The receiver is defined by an arrow nock protection portion and a bow string release attachment portion. These portions are isolated from one another to prevent a bow string release from inadvertently dislodging an arrow nock seated within the receiver. The arrow nock portion is comprised of an open-mouthed first frame with opposing ends and an arcuate section. Disposed within the arcuate section is a flange. The flange is narrow enough to permit an arrow nock to seat over it, yet wide enough to prevent attachment of a release device. The bow string release attachment portion of the invention is comprised of a second frame integrally formed with, although offset from, the first frame of the arrow nock protection portion.

Abstract: The subject invention provides a bow string release mechanism that can be outfitted with various types of interchangeable sear heads. The release mechanism generally comprises a sear head and a universal base, within which is mounted a trigger, a trigger arm linked to the trigger, and a spring-loaded locking yoke. The standard elements of all sear heads include a spring-loaded activation shaft and tabs which are receivable within notches provided in the base. An interchangeable sear head is attached to the base by fitting the tabs of the head into the notches of the base and rotating the head relative to the base until the yoke locks the head into place. Although selectively removable, the sear head, once locked into position on the release mechanism, is fully rotatable relative to the base. A sear head is removed from the base by releasing the yoke from engagement with the sear head and rotating the sear head relative to the base until the tabs and the notches align.

Abstract: A caliper bow string release with pivotal jaws includes holders at the outer ends of the jaws for mounting discreet and independent sear elements. The sear elements may be mounted in a fixed position relative to the holders or in a floating position relative to the holders. The sear elements may have a complex string-bearing surface conforming to the periphery and the shape of the string as it is engaged by the release mechanism. The sear elements may also be adapted to engage the string both above and below the nock of a typical arrow.

Abstract: A bow string release includes elongate, cylindrical sears adapted for linear, axial movement into and out of a string retaining notch, the sears having ends which for a string centering retainer when in the closed, string retaining position. The latch system is designed to engage the sears below their center lines to minimize trigger travel. A trigger with a cam actuator is provided to further minimize trigger travel.

Abstract: A bow string release with a head carrying a pivotable sear movable between a closed string retaining position and an open string releasing position, and a latch for selectively engaging and locking the sear in the string retaining position. The sear includes a roller mounted on one end and the latch includes a tapered pin for engaging the roller when the pin is extended to lock the sear in the closed position. The sear includes a pair of spaced string retaining notches, adapted for engaging the bow string above and below the nock of an arrow, the bow string substantially perpendicular to the axis of the arrow when the string is placed in the release mechanism.

Abstract: A bow string release with a head carrying at least one sear movable between a closed string retaining position and an open string releasing position, and a latch pin axially movable for selectively directly engaging and locking the sear in the string retaining position.

Abstract: The bow string release includes a pair of sear elements which move in a substantially linear motion relative to one another between open and closed position in response to movement of a latch which pivots into and out of latching engagement with each of the sear elements.

Abstract: A bow string release includes a head and body which may be rotated relative to one another, wherein the sear is contained in the head and the trigger is contained in the body. A stiff trigger element is used for translating trigger motion to the sear, the stiff trigger element having a feel similar to that of flexible trigger elements but functional in both the forward and reverse directions as with rigid trigger elements, facilitating reloading of the release.

Abstract: A bow string release includes a head with a string retaining sear and a grip with a trigger, each mounted on a cylindrical shaft such that head and grip are rotatable 360.degree. relative to one another. One embodiment includes a flexible, collapsible latch release.

Abstract: The bow string release includes a pair of sear elements which move in a substantially linear motion relative to one another between open and closed position in response to movement of a latch which pivots into and out of latching engagement with each of the sear elements.

Abstract: The bow string release includes a pair of sear elements which move in a linear motion relative to one another betweeen open and closed position in response to movement of a latch which pivots into and out of latching engagement with each of the sear elements.

Abstract: A bow string release includes elongate, cylindrical sears adapted for linear, axial movement into and out of a string retaining notch, the sears having ends which for a string centering retainer when in the closed, string retaining position. The latch system is designed to engage the sears below their center lines to minimize trigger travel. A trigger with a cam actuator is provided to further minimize trigger travel.

Abstract: A bow string release includes a sear mounted in a body for pivotal movement between a string retaining position and a string release position. A notch is provided in the body for receiving the bow string. A release member is pivotally mounted within the body and engageable with the sear to either prevent or allow pivotal movement of the sear. A trigger extends from the pivoting release member and extends outwardly through an opening in the body. The body surfaces defining the bow string receiving notch are curved convexly to allow limited rotational movement of the bow release while it is maintaining a bow string in the drawn position.

Abstract: A bow string release has a head rotatably mounted on a guide sleeve fixed in the release handle. A bow string is held in a notch in the head by opposed balls mounted in a bore transverse to the notch and held in contact by control pins carried by a collar axially slideable on the head. The pin is connected to the collar and is actuated by a trigger pivoted in the handle to move the collar and the control pins to let the balls move apart to release the string. The trigger stroke is adjustable. The pin can rotate relative to the trigger and to the head.

Abstract: The bow string release has a body with a string receiving notch in one end of the body and an axial hole through the other end of the body. A sear is pivoted adjacent the notch and is operative to retain a bow string in the notch. The handle has an axial hole therethrough. A guide sleeve is connected to the body and extends through the axial holes in the body and handle. An enlargement on the other end of the guide sleeve captures the handle relative to the guide sleeve. A spring acting between the guide sleeve and the handle takes up dimensional variations. A pull pin is slidably mounted in the guide sleeve for movement between a first position in which it engages the sear and a retracted position releasing the sear. A spring biases the pin to its first position. A trigger carried by the handle is operative to move the pin to its retracted position. Both the handle and the body are rotatable relative to each other and relative to the pin.

Abstract: The bow string release has a sear pivotally mounted in a cylindrical body and includes a string retaining finger which projects across the string receiving notch when the sear is engaged by a pull pin biased to the sear engaging position, the pull pin is slideable in a guide sleeve rotatably mounted in the end wall of the body to which it is coupled. A handle is rotatably mounted on said sleeve and carries a trigger through which the pull pin passes. When the trigger is actuated it rocks about its point of engagement with a washer to push another washer against an enlarged head on the end of the pin to pull the pin to release the sear. In one embodiment a screw in the handle and bearing on the trigger can be adjusted to "partly actuate" the trigger to adjust the stroke necessary to release the bow string. In a second embodiment a screw moves the enlarged head relative to the thrust washer to partly pull the pin for the same purpose.

Abstract: The bow string release has a body having a notch receiving a string which is retained by a pivoted sear capturing the string. The body is connected to a handle. A thrust bearing is located between the body and the handle, allowing the body and the handle to rotate relative to one another. A spring loaded plunger latches the sear to retain the string until the plunger is moved back by a trigger pivotally connected to the handle. A spring is compressed between the plunger head and a seat which can be adjusted to alter the trigger pull force. The trigger stroke is adjusted by the screw in the trigger adjustably engaging the hole in the wall of the release handle. Another embodiment has provision for triggering the release of a spring loaded piston which strikes the plunger to release the sear. A further embodiment uses a small solenoid in the handle to move the plunger to release the sear.