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  Fe-mn-al alloy club body combining with a ti alloy striking plateUSPTO Application #: 20060014594Title: Fe-mn-al alloy club body combining with a ti alloy striking plate Abstract: A golf club head structure includes a Fe—Mn—Al alloy club body and a Ti alloy striking plate. The Fe—Mn—Al alloy club body connects to the Ti alloy striking plate by press-fitting or brazing so that the combined club head structure obtains lower Young's modulus to transmit a complete striking stress from the Fe—Mn—Al alloy club body to the Ti alloy striking plate while striking a golf ball. The Fe—Mn—Al alloy club body can eliminate vibration to maintain high elastic deformation of the Ti alloy striking plate while striking a golf ball. Furthermore, a W—Fe—Ni alloy weight member connects to the Fe—Mn—Al alloy club body by welding since Fe—Mn—Al alloy performs excellent heterogeneous welding ability. (end of abstract)
Agent: Birch Stewart Kolasch & Birch - Falls Church, VA, US Inventor: Wen-Ching Hou USPTO Applicaton #: 20060014594 - Class: 473349000 (USPTO) Related Patent Categories: Games Using Tangible Projectile, Golf, Club Or Club Support, Head, Particular Material Composition Or Mass Distribution The Patent Description & Claims data below is from USPTO Patent Application 20060014594. Brief Patent Description - Full Patent Description - Patent Application Claims
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a Fe--Mn--Al alloy club body combining with a Ti alloy striking plate. More particularly, the present invention relates to a golf club head structure consisting of Fe--Mn--Al alloy and Ti alloy for improving vibration-absorbable ability and elastic deformation. [0003] 2. Description of the Related Art [0004] Generally, a conventional golf club head includes a club body and a striking plate connected thereto. In manufacture, the club body is made of material selected from a group consisting of stainless steel, carbon steel and alloyed steel in consideration of manufacture cost, striking ability and entire structural strength. Correspondingly, the striking plate is made of Ti alloy. In comparison with the material of the club body, the material of the striking plate has lower Young's modulus. The Young's modulus is given by E=stress/strain=load/displacement kgf/mm.sup.2 [0005] where E is the Young's modulus of material. The Young's modulus of material is inverse proportion to coefficient of restitution (COR). Namely, an increase of Young's modulus results in a decrease of coefficient of restitution. Hence, the striking plate employs lower Young's modulus of material to obtain higher coefficient of restitution for high deformation within elastic limit of the material while striking a golf ball. Accordingly, the striking plate can reduce a damping effect upon absorbing a striking stress that attenuates impact deformation of the golf ball. Consequently, it can avoid attenuating (losing) energy of a striking stress and increase a striking distance. [0006] Referring initially to FIG. 1, the club body is usually made of high Young's modulus material, 17-4 steel having Young's modulus of 20,765 kgf/mm.sup.2 for example, in consideration of structural strength and manufacture cost in the industry. The higher Young's modulus material of the club body performs low elastic deformation ability and high coefficient of damping that results in excessive absorption of an impact force while striking a golf ball. Consequently, the excessive absorption of the club body affects normal elastic deformation and striking ability of the striking plate. Meanwhile, the excessive absorption of the club body is converted into a vibration and then transmitted to a club shaft and a club grip that affects striking stability, gripping feel for hands and structural strength of a connecting portion of the club body. In addition, the conventional club body is made of low-carbon steel, carbon steel or alloy steel which has poor heterogeneous welding quality for different metals. To avoid this task, the golf club body combines with a weight member by a method selected from consisting of snap-fitting, press-fitting and brazing instead of welding. Consequently, it may prolong the manufacture time of the golf club head. [0007] The present invention intends to provide a Fe--Mn--Al alloy club body combining with a Ti alloy striking plate. In comparison with the club body made of stainless steel, carbon steel or other alloy steel, the Fe--Mn--Al alloy club body has lower Young's modulus that performs excellent vibration-absorbable ability and heterogeneous welding quality for different metals. Thereby, the Fe--Mn--Al alloy club body is able to transmit a complete striking stress to the Ti alloy striking plate that can attenuate vibration and maintain high elastic deformation to improve striking ability, striking stability, gripping feel for hands and combined strength of a weight member. SUMMARY OF THE INVENTION [0008] The primary objective of this invention is to provide a Fe--Mn--Al alloy club body which is able to transmit a complete striking stress to a striking plate. Thereby, the Fe--Mn--Al alloy club body reduces the possibility of attenuating the striking stress, and thus improves striking ability and striking distance. [0009] The secondary objective of this invention is to provide a Fe--Mn--Al alloy club body which is combined with a Ti alloy striking plate. Thereby, the Fe--Mn--Al alloy club body can avoid vibration to enhance striking stability and gripping feel for hands. [0010] Another objective of this invention is to provide a Fe--Mn--Al alloy club body which has excellent heterogeneous welding quality for different metals. Thereby, the Fe--Mn--Al alloy club body is suitable for welding a weight member and speeds the processing time. [0011] The golf club head structure in accordance with the present invention includes a Fe--Mn--Al alloy club body and a Ti alloy striking plate. The Fe--Mn--Al alloy club body connects to the Ti alloy striking plate by press-fitting or brazing so that the combined club head structure obtains lower Young's modulus to transmit a complete striking stress from the Fe--Mn--Al alloy club body to the Ti alloy striking plate while striking a golf ball. The Fe--Mn--Al alloy club body can eliminate vibration to maintain high elastic deformation of the Ti alloy striking plate while striking a golf ball. Furthermore, a W--Fe--Ni alloy weight member connects to the Fe--Mn--Al alloy club body by welding since Fe--Mn--Al alloy performs excellent heterogeneous welding ability. [0012] Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS [0013] The present invention will now be described in detail with reference to the accompanying drawings wherein: [0014] FIG. 1 is a table and a graph showing Young's modulus of a conventional golf club head made of 17-4 stainless steel; [0015] FIG. 2 is an exploded cross-sectional view of a golf club head in accordance with a first embodiment of the present invention; [0016] FIG. 3 is a cross-sectional view of the assembled golf club head in accordance with the first embodiment of the present invention; [0017] FIG. 4 is a table and a graph showing Young's modulus of the golf club head in accordance with the first embodiment of the present invention; [0018] FIG. 5 is an exploded cross-sectional view of a golf club head in accordance with a second embodiment of the present invention; [0019] FIG. 6 is a cross-sectional view of the assembled golf club head in accordance with the second embodiment of the present invention; and [0020] FIG. 7 is an exploded cross-sectional view of a golf club head in accordance with a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION [0021] Referring initially to FIGS. 2 through 4, a golf club head in accordance with a first embodiment of the present invention includes a Fe--Mn--Al alloy club body 10 and a Ti alloy striking plate 20. The Fe--Mn--Al alloy club body 10 is made of Fe--Mn--Al alloy which has Young's modulus of 144425 kgf/mm.sup.2. The Ti alloy striking plate 20 is made of Ti alloy which has lower Young's modulus. Continue reading... Full patent description for Fe-mn-al alloy club body combining with a ti alloy striking plate Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Fe-mn-al alloy club body combining with a ti alloy striking plate patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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