| 摘要 |
A spear assembly for fishing underwater and inside undersea structures includes an elongated hollow shaft filled with rigid plastic foam material to inhibit entry of water and to rigidify the shaft and has a rear portion and a forward portion, which may include a metallic rod to add weight and strength to the punch delivered by the spear, and a rear portion rigidly connected to the forward portion, a repleacable sharp spear tip for piercing the fish is located at a proximal end of the forward portion, an elastic band for propelling the shaft when the band is released is carried on a movable mechanical means to enable a diver to quickly adjust the tension power of the band by moving it close to the spear tip while keeping the shooting hand indexed in the same release position near the forward portion of the spear. The proximity of the elastic band and the spear tip enables the diver to maneuver the forward portion inside and around undersea structures to spear the nearby fish. An alternative embodiment of the present invention includes a pair of tension bands carried on respective slidable lock means. The bands are located diametrically opposite from each other on both sides of the shaft to provide equalized forces on the shaft, which assist in forcing the spear to be propelled in the appropriate longitudinal axis of the shaft.
|
