초록 ▼

A rangefinding device wherein a series of movable lines are created electronically via the use of a liquid crystal display and associated circuitry. When a target of a known size, such as a deer, is “bracketed”exactly between two of these lines, the correct yardage is indicated on another portion of

A rangefinding device wherein a series of movable lines are created electronically via the use of a liquid crystal display and associated circuitry. When a target of a known size, such as a deer, is “bracketed”exactly between two of these lines, the correct yardage is indicated on another portion of the liquid crystal display. The device has utility for both hunting and target purposes. The device is battery operated and is small enough and light enough to be mounted on any standard recurve bow, compound bow, or crossbow.

대표청구항 ▼

A rangefinding apparatus for attachment to a bow, comprising in combination: (a) a transparent viewing window through which a target having a first preselected size can be viewed by an archer aiming the bow in a drawn configuration at the target; (b) first display means for selectively displaying an

A rangefinding apparatus for attachment to a bow, comprising in combination: (a) a transparent viewing window through which a target having a first preselected size can be viewed by an archer aiming the bow in a drawn configuration at the target; (b) first display means for selectively displaying an upper target bracketing line and a lower target bracketing line in the transparent viewing window, the lower bracketing line being below and spaced from the upper target bracketing line, the location of the lower target bracketing line being selected for the first preselected size target; (c) second display means for displaying a digital number corresponding to a distance between the upper target bracketing line and the first lower target bracketing line, and hence to the distance from the rangefinding apparatus to the target; (d) upper bracketing line control means for effectively moving the upper target bracketing line in response to a control switch actuated by a finger of the archer\s hand gripping a handle of the bow to cause the upper target bracketing line to visually bracket an upper portion of the target as seen through the transparent viewing window by the eye of the archer when the bow is aimed so that the lower target bracketing line appears to bracket a lower portion of the target; and (e) digital display control means responsive to the control switch for causing the second display means to automatically display a digital number corresponding to the position of the displayed upper target bracketing line and hence to the distance from the rangefinding apparatus to the target.