Club length adjustment device

Patent metadata

Field	Value
Publication number	US-10220276-B2
Application number	US-201715783238-A
Country	US
Kind code	B2
Filing date	Oct 13, 2017
Priority date	Nov 1, 2013
Publication date	Mar 5, 2019
Grant date	Mar 5, 2019

Abstract

A golf club length adjustment device, comprising a first member affixed to a main shaft, the main shaft configured to couple to a golf club head, a second member slideably coupled to the first member, the second member adapted to couple to a golf club grip, wherein the first member is configured to slide along a club axis relative to the second member to change the length of the golf club, a backout prevention unit configured to limit the second member from uncoupling from the first member after the golf club length adjustment device has been assembled, a decoupling tool configured to be inserted through an access hole formed in a proximal end of the grip, the decoupling tool configured to engage and deflect the backout prevention unit, disengaging the backout prevention unit from the second member, allowing for disassembly of the second member from the first member.

First claim

We claim:

1. A golf club length adjustment device for use in a golf club, comprising:
a first member affixed to a main shaft, said main shaft configured to couple to a golf club head;
a second member slideably coupled to said first member, said second member adapted to couple to a golf club grip, said golf club grip including an internal cavity configured to receive a golf club shaft;
wherein said first member is configured to slide along a club axis relative to said second member to change the length of said golf club;
wherein said first member and said second member are configured to limit rotation of said first member relative to said second member;
a backout prevention unit configured to limit said second member from uncoupling from said first member after said golf club length adjustment device has been assembled;
wherein said first member comprises a backout prevention window configured to receive and retain said backout prevention unit;
wherein said second member comprises a slot running along a portion of the length of said second member;
wherein said backout prevention unit comprises a first backout protrusion configured to reside within said slot and engage an end of said slot preventing disassembly of said second member from said first member.

2. The golf club length adjustment device of claim 1 , wherein said backout prevention unit comprises a first backout prevention member and a second backout prevention member connected by a backout prevention bridge member, said first backout protrusion extending outward from said first backout prevention member and a second backout protrusion extending outwards from said second backout prevention member.

3. The golf club length adjustment device of claim 2 , wherein said backout prevention unit comprises a release ramp extending proximally into a backout prevention member interior located between said first backout prevention member and said second backout prevention member from said first backout prevention member and a second release ramp extending proximally into said backout prevention member interior from said second backout prevention member.

4. The golf club length adjustment device of claim 1 , wherein said first member is formed from a first material, said backout prevention unit is formed from a second material, wherein said second material has a density higher than said first material.

5. The golf club length adjustment device of claim 1 , further comprising a locking system configured to selectively limit said first member from sliding relative to said second member, wherein said locking system comprises a locked position and an unlocked position, wherein said locking system is configured to selectively lock said first member relative to said second member at each of a plurality of discrete golf club lengths.

6. The golf club length adjustment device of claim 5 , wherein said locking system comprises at least one locking member formed separately from said first member, and wherein said first member comprises a locking window formed through said first member, said at least one locking member partially residing within said locking window, said locking window configured to limit movement of said at least one locking member axially along said first member.

Assignees

• Acushnet Co

Inventors

• Knutson Scott A
• Bone Donald S

Classifications

• A63B2071/0694

  Visual indication, e.g. Indicia · CPC title

• A63B60/28

  with adjustable length · CPC title

• A63B53/02

  Joint structures between the head and the shaft · CPC title

• A63B53/14

  Handles · CPC title

• A63B2102/32

  Golf · CPC title