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US 11,504,591 B2Granted
Self-centering mandrel for golf club hosels
AssigneeTopgolf Callaway Brands Corp.
InventorAlex Power
Life of this patent
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Abstract
A laser mandrel system that self-centers within a hosel bore of a golf club head to allow for precision adjustment of lie and loft is disclosed herein. The mandrel includes a one-piece housing with upper and lower portions, a laser centered within the upper portion of the housing, and a plurality of o-rings extending around an exterior or interior surface of a lower portion of the housing.
Claims16
A method comprising the steps of:
- providing a self-centering mandrel comprising
- a one-piece housing with upper and lower portions, the upper portion comprising a tapered section with a window, the lower portion comprising a plurality of grooves, and a housing bore extending into both of the upper and lower portions,
- a laser disposed within the housing bore within the upper portion, the laser comprising a beam emitter and a laser housing that is at least partially visible through the window, the laser aligned with an outer surface of the one-piece housing to within less than 0.35 milliradian,
- at least one o-ring extending around an external surface of the lower portion of the housing and disposed within one of the plurality of grooves, and
- a plurality of set screws extending through the one-piece housing, contacting the laser, and aligning the laser within the one-piece housing, each set screw of the plurality of set screws comprising a thread locker;
- providing a golf club head comprising a hosel with a hosel bore;
- inserting at least the lower portion of the mandrel into the hosel so that the at least one o-ring is disposed within the hosel bore;
- and
- measuring at least one of a loft and lie of the hosel,
- wherein the at least one o-ring creates pressure within the hosel bore to center the mandrel within the hosel bore.
7 more elements
A method comprising the steps of:
- providing a self-centering mandrel comprising
- a one-piece housing with hollow upper and lower portions, the upper portion comprising a tapered section with a window, the lower portion comprising a plurality of grooves, and a housing bore extending into both of the upper and lower portions,
- a laser disposed within the housing bore within the upper portion, the laser comprising a beam emitter and a laser housing that is at least partially visible through the window, the laser aligned with an outer surface of the one-piece housing to within less than 0.35 milliradian,
- at least one o-ring disposed within the hollow lower portion and extending around an inner surface of the lower portion of the housing and disposed within one of the plurality of grooves, and
- a plurality of set screws extending through the one-piece housing, contacting the laser, and aligning the laser within the one-piece housing, each set screw of the plurality of set screws comprising a thread locker;
- providing a golf club head comprising an extruded hosel;
- inserting at least a portion of the extruded hosel into the lower portion of the housing so that the at least one o-ring encircles the extruded hosel;
- and
- measuring at least one of a loft and lie of the hosel,
- wherein the at least one o-ring creates pressure around the extruded hosel to center the mandrel around the extruded hosel.
7 more elements
Dependencies are inferred from the claim text.