Temporary golf club shaft-component connection
View Patent ↗A temporary shaft-component connection for assembling a selected golf club shaft with a club head and/or hand grip segment, to facilitate custom club design and fitting to suit the needs and preferences of an individual golfer. The temporary shaft-component connection is particularly designed for use with nonmetallic club shafts formed from a graphite-based composite material or the like having a range of different lengths and stiffness (whip) characteristics. In a shaft-head connection, a metal adapter insert is mounted onto a lower end of the club shaft and includes one or more flat surfaces for reception into a matingly shaped socket in the hosel of a selected club head to prevent relative rotation between the club shaft and head. A compression nut carried on the shaft is threaded onto the hosel to axially engage and retain a thrust flange on the shaft or adapter or adapter insert, to prevent axial separation of the club head and shaft.
1. A golf club, comprising:
a club head;
a shaft; and
an adapter for releasably connecting the club head with the shaft, wherein the adapter includes:
an adapter insert tube having a first end and a second end opposite the first end, wherein the first end defines an opening into which the shaft is fixedly engaged, and wherein the second end defines an exterior surface having plural rotation-inhibiting structures;
a thrust flange provided along the adapter insert tube between the first end and the second end;
a compression nut for releasably connecting the adapter insert tube with the club head, wherein the compression nut includes a thrust shoulder for engaging the thrust flange; and
an insert sleeve fixedly engaged with the club head, wherein the insert sleeve includes a first end and a second end opposite the first end, wherein the first end of the insert sleeve defines an opening for releasably receiving and engaging the exterior surface of the second end of the adapter insert tube in a non-rotatable manner and the second end of the insert sleeve includes exterior surfaces that fixedly engage a hosel portion of the club head, wherein said shaft is able to extend within said hosel portion.
2. A golf club according to claim 1 , wherein the thrust flange is integrally formed as part of the adapter insert tube.
3. A golf club according to claim 1 , wherein the first end of the insert sleeve includes structures that engage the compression nut.
4. A golf club according to claim 3 , wherein the compression nut threadably engages with the first end of the insert sleeve to firmly retain the thrust flange and thereby prevent axial separation of the club head from the shaft.
5. A golf club according to claim 1 , wherein the rotation-inhibiting structures of the adapter insert tube include a splined configuration.
6. An adapter for connecting a golf club shaft with a golf club head, the adapter comprising:
an adapter insert tube having a first end and a second end opposite the first end, wherein the first end defines an opening into which the shaft is fixedly engaged, and wherein the second end defines an exterior surface having plural rotation-inhibiting structures;
a thrust flange provided along the adapter insert tube between the first end and the second end;
a compression nut for releasably connecting the adapter insert tube with the club head, wherein the compression nut includes a thrust shoulder for engaging the thrust flange; and
an insert sleeve fixedly engaged with the club head, wherein the insert sleeve includes a first end and a second end opposite the first end, wherein the first end of the insert sleeve defines an opening for releasably receiving and engaging the exterior surface of the second end of the adapter insert tube in a non-rotatable manner and the second end of the insert sleeve includes exterior surfaces that fixedly engage a hosel portion of the club head, wherein said shaft is able to extend within said hosel portion.
7. An adapter according to claim 6 , wherein the thrust flange is integrally formed as part of the adapter insert tube.
8. An adapter according to claim 6 , wherein the first end of the insert sleeve includes structures that engage the compression nut.
9. An adapter according to claim 8 , wherein the compression nut threadably engages with the first end of the insert sleeve to firmly retain the thrust flange and thereby prevent axial separation of the club head from the shaft.
10. An adapter according to claim 6 , wherein the rotation-inhibiting structures of the adapter insert tube include a splined configuration.