| Integral sole face club head -> Monitor Keywords |
|
|
 
Integral sole face club headRelated Patent Categories: Games Using Tangible Projectile, Golf, Club Or Club Support, Head, Hollow BodyIntegral sole face club head description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070066421, Integral sole face club head. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] This invention relates to a method of manufacturing sports equipment, specifically a golf club made of two head halves and a hosel. DISCUSSION OF RELATED ART [0002] The traditional forged component structure of a golf-club head has four pieces, a crown, a hosel, a faceplate, and a sole in clockwise direction of FIG. 5. The crown of the traditional four-piece golf club is welded to the sole at its upwardly extending skirt so that leakage of solder wire is about 8-10 g, which concentrates on the upper part of the head, raising the head's center of gravity. This makes the total solder welding weight of about 22 g which can affect the golf club head weight distribution and center of gravity or CG in short. Therefore, loss of precision and other center of weight problems have long been unsolved in four-piece type of golf-club head. Since the weight distribution of a club head is generally uniform, in order to correct the center of gravity one must add inserts commonly made of heavier material to the sole and skirt of the head. [0003] Traditionally, the sole and skirt are integrally formed from one sheet of metal as seen in FIG. 5 although it is preferred to have a thicker sole than the skirt. Unfortunately, the traditional method makes this difficult because the sole and skirt are formed from a uniform thickness planar metal sheet. Additionally, the welding junction of the four pieces that defines the hosel connection requires excessive solder accumulation causing a variety of weight distribution and tolerance problems. [0004] Further, there are issues with regard to welding the sole, crown and face to one another (each other). Each positioning of the pieces in production cannot guarantee the same profile of the resulting face angle, i.e. the angle of loft for every product. SUMMARY OF THE INVENTION [0005] The club head of this invention has the faceplate with sole made in a single piece like the crown with the integral skirt. The club head also includes a stretched hosel connection. A workpiece pattern is prepared and a mold draws the faceplate and sole, which is erected from the faceplate along a transverse line at a built-in angle of loft. Thus, the faceplate is formed from a flat sheet of metal into a face-sole unit. Similarly, another mold draws the crown of the golf-club head to integrally include a skirt and stretched hosel connection. Thus, the crown is formed from a second flat sheet of metal into a crown-skirt unit. In certain crown shapes, the male mold member may have to be made collapsible. [0006] Optionally, the hosel may be integral to the faceplate formed of a single piece of metal and welded to the crown at the hosel connection when the club parts are welded along an interface formed between the face-sole unit and crown-skirt unit. Also, the hosel and face of the face-sole unit can be made of two separate pieces of metal and joined together. The hosel and face can be joined together before or after the welding of other parts. [0007] The hosel connection has a hosel attachment opening receiving a standard cylindrical hosel with precise tolerance. The crown-skirt unit is then welded to the face-sole unit along a seam line and to the hosel in order to form the golf-club head. In traditional structures, the sole is integrated with skirt and is then welded with the crown, striking face and hosel. The striking face commonly has grooves, which indicate the sweet spot. [0008] Welding the crown-skirt unit to the face-sole unit advantageously lowers the center of gravity of the head compared to the traditional component welded structure. In the present invention, the welding position is lowered to the lower side of the head and the bottom at the face-sole unit with an in-leakage of solder of about 3 g, which concentrates on the lower part of the head. Thus, a portion of weight is shifted from the upper part of the head, where the crown and the skirt would otherwise have been welded, to the lower part of the head. In comparison, conventional golf club head includes three components of a crown, a sole with a skirt, a faceplate welded via the respective seam lines. The club head also has a hosel, which protrudes into the cavity of the club head through an opening defined by converging edges of the three components and welded thereto. [0009] According to the present invention, the junction between the faceplate and the sole is completely spared any welding seam that may cause the unevenness of the sole bottom and the irregular loft angle plague associated with conventional golf club heads. Overall, the net effect is to guarantee the production of club head with same external shape or the angle of loft that was difficult to achieve in the past because the separate face had to be positioned and welded to the sole as well as the crown. It means the head's center of gravity CG can be lowered by about 1-1.5 mm or more compared to that of a head made in a traditional fashion. A 1 mm CG shift should substantially affect the sweet spot. In addition, the integral structure of the face-sole unit ensures the durable junction of the face and sole with eliminated possibility of cracking even after repeated high impacts during the life of the club head. BRIEF DESCRIPTION OF THE DRAWINGS [0010] FIG. 1 is an exploded perspective view of the club head according to the present invention depicting the steps to make the same. [0011] FIG. 2 is a perspective view of the club head according to the present invention. [0012] FIG. 3 is a side sectional view of the club head of FIG. 1. [0013] FIG. 4 is a side sectional view of the prior art club head. [0014] FIG. 5 is an exploded view of the prior art club head. [0015] FIG. 6 is a perspective view of the prior art club head of FIG. 5. [0016] FIG. 7 is an exploded view of the club head according to the present invention. [0017] FIG. 8 is a perspective view similar to FIG. 2 for comparison with the prior art club head. [0018] FIG. 9 is a perspective view of the crown according to the present invention. [0019] FIG. 10 is a perspective view of the prior art crown. OBJECTS OF THE INVENTION Continue reading about Integral sole face club head... Full patent description for Integral sole face club head Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Integral sole face club head 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. Start now! - Receive info on patent apps like Integral sole face club head or other areas of interest. ### Previous Patent Application: Golf club head Next Patent Application: Force relieving golf tee Industry Class: Games using tangible projectile ### FreshPatents.com Support Thank you for viewing the Integral sole face club head patent info. IP-related news and info Results in 0.22572 seconds Other interesting Feshpatents.com categories: Electronics: Semiconductor , Audio , Illumination , Connectors , Crypto , 174 |
 * Protect your Inventions * US Patent Office filing 
PATENT INFO |
|
