Adjustable golf club shaft and hosel assembly

1. A golf club head comprising:

a hosel comprising a hosel bore and a heel-side opening, the hosel bore comprising an internal flange;

a shaft sleeve comprising a shaft bore;

a locking piece comprising a ledge; and

a lever comprising a lever head,

wherein the lever head comprises an upper surface having a first length and a lower surface having a second length that is greater than the first length,

wherein the shaft sleeve and the locking piece fit within the hosel bore, and

wherein the lever head fits within the side opening between the ledge and the flange and fixes the shaft sleeve to the hosel.

2. The golf club head of claim 1 , wherein the locking piece comprises a stem.

3. The golf club head of claim 2 , wherein the lever head comprises a stem-receiving recess.

4. The golf club head of claim 2 , further comprising a washer, wherein the washer encircles the stem and abuts an upper surface of the ledge.

5. The golf club head of claim 1 , wherein the lever comprises a lever handle, and wherein the hosel comprises a recessed area proximate the heel-side opening sized to receive the lever handle.

6. The golf club head of claim 1 , further comprising a face component, wherein the hosel is integrally formed with the face component.

7. The golf club head of claim 1 , further comprising a connection piece, wherein the connection piece connects the locking piece to the shaft sleeve.

8. The golf club head of claim 1 , wherein the lever head further comprises at least one guidance pin, and wherein the hosel opening comprises at least one ledge shaped to engage the at least one guidance pin.

9. The golf club head of claim 1 , further comprising a first tubular adjustment piece having non-parallel upper and lower surfaces, the first tubular adjustment piece encircling at least a portion of the shaft sleeve and abutting an upper surface of the hosel.

10. The golf club head of claim 9 , further comprising a second tubular adjustment piece having non-parallel upper and lower surfaces, the second tubular adjustment piece encircling at least a portion of the shaft sleeve and disposed proximate the first tubular adjustment piece.

11. A driver-type golf club head comprising:

a metal face component comprising a striking face, a return portion, a hosel, a heel side, and a toe side;

a metal sole;

a crown;

a shaft sleeve comprising a shaft bore, a stem, and a ledge;

a washer; and

a lever comprising a lever handle and a lever head;

wherein the lever head comprises an upper surface, a stem-receiving recess, and a lower surface,

wherein the hosel comprises a heel-side opening and a hosel bore comprising an internal flange,

wherein the shaft sleeve fits within the hosel bore such that the stem extends through the internal flange and the ledge is disposed below the internal flange,

wherein the washer encircles the stem and abuts an upper surface of the ledge, and

wherein the lever head fits within the heel-side opening such that the upper surface abuts the internal flange and the lower surface abuts the washer.

12. The driver-type golf club head of claim 11 , wherein the face component is integrally formed with the sole, wherein the shaft sleeve is composed of a lightweight metal alloy, and wherein the lever is composed of a polymeric material.

13. The driver-type golf club head of claim 11 , wherein the lever head further comprises at least one guidance pin, and wherein the hosel opening comprises at least one ledge shaped to engage the at least one guidance pin.

14. A golf club head comprising:

a hosel comprising a keyed hosel mouth, a hosel bore having an internal flange, and a heel-side opening;

a keyed fitting member sized to fit within the keyed hosel mouth;

a shaft sleeve comprising a shaft bore, a keyed portion sized to fit within the fitting member, a stem, and a ledge;

a first tubular adjustment piece having non-parallel upper and lower surfaces, the first tubular adjustment piece encircling at least a portion of the shaft sleeve and abutting the hosel mouth; and

a lever comprising a lever handle and a lever head,

wherein the lever head comprises an upper surface and a lower surface,

wherein the keyed fitting member can move along a first axis within the hosel mouth,

wherein the keyed portion of the shaft sleeve can move along a second axis within the fitting member,

wherein rotating the first tubular adjustment piece around the shaft sleeve causes the shaft sleeve to move along at least one of the first and second axes within the hosel bore,

wherein the shaft sleeve fits within the hosel bore such that the ledge is disposed below the internal flange, and

wherein the lever head fits within the heel-side opening such that the upper surface is disposed proximate the internal flange and the lower surface is disposed proximate the ledge.

15. The golf club head of claim 14 , further comprising a washer comprising a flat upper surface and a convex lower surface, wherein the washer encircles the stem, wherein the lower surface abuts an upper surface of the ledge, and wherein the upper surface abuts the lever head.

16. The golf club head of claim 14 , wherein the hosel is composed of a first metal alloy having a first density, the shaft sleeve and the first tubular adjustment piece are composed of a second metal alloy having a second density that is less than the first density, and the fitting member and lever are composed of a non-metal material.

17. The golf club head of claim 14 , wherein the first axis is approximately perpendicular to the second axis.

18. The golf club head of claim 14 , wherein the lever head comprises a stem-receiving recess.

19. The golf club head of claim 14 , wherein the lever head comprises at least one guidance pin, and wherein the hosel opening comprises at least one ledge shaped to engage the at least one guidance pin.