US 8,944,934 B2 · Golf club head

Abstract

A head 4 includes a head body h1, a socket 10, and a weight body 12. The weight body 12 has an engaging part 32. The socket 10 has a first hole part 18 and a second hole part 20. The engaging part 32 can take an engaging position EP and a non-engaging position NP in the second hole part 20 by relative rotation of an angle θ. Hardness Hs of the second hole part 20 is D40 or greater and D58 or less. The second hole part 20 has a resistance surface 84 elastically deformed in the middle of the relative rotation. A longest sectional size of the engaging part 32 is defined as d1, and a distance between the resistance surfaces 84 opposed to each other is defined as F1, a ratio (F1/d1) is 0.935 or greater and 0.965 or less.

Drawings

Drawings are temporarily unavailable. Open the PDF at USPTO

Drawings

Claims18

Dependent claims

A golf club head comprising:

a head body;
a socket attached to the head body;
and
a weight body capable of being attached to or detached from the socket,
wherein the weight body can be attached or detached by relative rotation of an angle θ to the socket;
the weight body has an engaging part;
the socket has a first hole part and a second hole part;
hardness Hs of the second hole part is D40 or greater and D58 or less;
the engaging part can take an engaging position EP and a non-engaging position NP in the second hole part by the relative rotation of the angle θ;
the second hole part has a resistance surface elastically deformed in the middle of the relative rotation;
and
when a longest sectional size of the engaging part is defined as d1, and a distance between the resistance surfaces opposed to each other is defined as F1, F1/d1 is 0.935 or greater and 0.965 or less;
and
when a distance between opposed surfaces of the engaging part is defined as c1, and an opening width of the first hole part is defined as K1, a difference (K1−c1) is 0.3 mm or greater and 0.6 mm or less.

11 more elements

Dependencies are inferred from the claim text.

Description6,838 words

Summary565 words

#The present application claims priority on Patent Application No. 2011-271831 filed in JAPAN on Dec. 13, 2011, the entire contents of which are hereby incorporated by reference.

#1. Field of the Invention

#The present invention relates to a golf club head having a weight body.

Brief description of the drawings10 figures

#FIG. 1 shows a golf club having a head according to an embodiment of the present invention;

#FIG. 2 is a perspective view of the vicinity of a sole of the head of FIG. 1;

#FIG. 3 is an exploded perspective view of a weight body attaching/detaching mechanism;

Detailed description6,102 words

#Hereinafter, the present invention will be described below in detail based on the preferable embodiments with appropriate references to the accompanying drawings.

#A golf club head of the embodiment has a weight body attaching/detaching mechanism. The mechanism satisfies the Golf Rules defined by R&A (Royal and Ancient Golf Club of St Andrews). That is, the weight body attaching/detaching mechanism satisfies requirements specified in “1b Adjustability” in “1 Clubs” of “Appendix II Design of Clubs” defined by R&A. The requirements defined by the “1b Adjustability” are the following items (i), (ii), and (iii):

#(i) the adjustment cannot be readily made;

Facts

Application

13/711,853Filed 12 Dec 2012

Priority

JP 2011-27183113 Dec 2011

Published

US 2013/0150180 A113 Jun 2013

Granted

3 Feb 2015

Term ends

30 Mar 2033

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 108 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification7 codes

A63B 53/0466
Heads: wood-type
A63B 60/42
Details or accessories of golf clubs, bats, rackets or the like: devices for measuring, verifying, correcting or customising the inherent…
A63B 53/0433
Heads: with special sole configurations
A63B 60/02
Details or accessories of golf clubs, bats, rackets or the like: ballast means for adjusting the centre of mass

Timeline

13 Dec 2011Priority claimedJP 2011-271831
12 Dec 2012Application filedUS 13/711,853
13 Dec 2012Assigned to Dunlop Sports Co. Ltd.assignment of assignor's interest
13 Jun 2013PublishedUS 2013/0150180 A1
3 Feb 2015GrantedUS 8,944,934 B2
17 Apr 2018Assigned to Sumitomo Rubber Industries, Ltd.merger
12 Oct 2026TodayWithin its term
30 Mar 2033Term endsEstimated, includes 108 days of adjustment

Golf club head

Life of this patent

Golf club head

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims18

Description6,838 words

Drawings

Classification7 codes

Life of this patent

Description6,838 words