BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIGS. 1 and 2 are perspective views showing conventional compound archery bows;
FIGS. 3 and 4 are enlarged cross-sectional partial perspective views respectively showing plate-type and bar-type limbs of conventional compound archery bows;
FIGS. 5, 7, 9 and 11 are enlarged cross-sectional partial perspective views showing plate-type limbs of compound archery bows in accordance with first to fourth embodiments of the present invention, respectively; and
FIGS. 6, 8, 10 and 12 are enlarged cross-sectional partial perspective views showing bar-type limbs of compound archery bows in accordance with first to fourth embodiments of the present invention, respectively.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Below, a detailed description will be given of the present invention in conjunction with embodiments illustrated in the accompanying drawings.
In accordance with an embodiment of the present invention, provided is a limb for a compound archery bow, which comprises a core made of wood or foam completely surrounded by a thin composite material selected from among carbon fiber, glass fiber and a combination thereof.
With reference to FIGS. 5 and 6, cross sectional partial perspective views show respective plate-type and bar-type limbs 100, 200 according to a first embodiment of the present invention. In this embodiment, the limb 100, 200 is comprised of a core 110, 210 completely surrounded by a carbon fiber layer 120, 220.
With reference to FIGS. 7 and 8, plate-type and bar-type limbs 100, 200 in accordance with a second embodiment of the present invention are respectively shown in cross sectional partial perspective views. In this embodiment, the limb 100, 200 is composed of a core 110, 210 completely surrounded by a glass fiber layer 130, 230.
FIGS. 9 and 10 show plate-type and bar-type limbs 100, 200, respectively, according to a third embodiment of the present invention in cross sectional partial perspective views. As shown in these views, the limb 100, 200 according to the third embodiment of the present invention is composed of a core 110, 210 completely surrounded by a carbon fiber layer 120, 220 and a glass fiber layer 130, 230 in that order.
FIGS. 11 and 12 are cross sectional partial perspective views respectively showing plate-type and bar-type limbs 100, 200 in accordance with a fourth embodiment of the present invention. In this embodiment, the limb 100, 200 is composed of a core 110, 210 completely surrounded by a glass fiber layer 130, 230 and a carbon fiber layer 120, 220 in that order.
In accordance with the present invention, the core 110, 210 is preferably made from synthetic foam or wood. It is preferable that the carbon fiber layer 120, 220 and the glass fiber layer 130, 230 each have a thickness of 0.5 mm or greater.
As described hereinbefore, provided is a limb of a compound archery bow, which comprises a core 110, 210 made from foam or wood with a carbon fiber layer 120, 220 and/or a glass fiber layer 130, 230 completely surrounding the core 110, 220.A compound archery bow having such a structure has excellent impact absorption ability and high torsional strength, thereby achieving increased shooting speed.
Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible. Accordingly, the modifications, additions and substitutions should be understood as falling within the scope and spirit of the invention.
Patent Application
20080072887
