Shaft coupler
AssigneeBalance-Certified Golf, Inc.
InventorJeffrey L. Lindner
Life of this patent
Estimating the term…
Abstract
A device for coupling two shaft members of differing diameters. The device includes a barrel and a reaction mass. The barrel is hollow and includes an outside coupler formed by the exterior surface of an upper portion of the barrel, an inside coupler formed by the inside surface of the barrel, and a reaction mass interface formed by the exterior surface of a lower portion of the barrel. The outside coupler is sized to fit inside a hollow end of the first shaft member. The inside coupler is sized to receive the second shaft member. The reaction mass slides over the second shaft member and into position on the reaction mass interface of the barrel. The parts are secured together with an adhesive.
Claims16
A device for coupling a first shaft to a second shaft, each said shaft having a coupling end to be coupled to said device, the coupling end of the first shaft being hollow with an inside diameter being greater than the outside diameter of the coupling end of the second shaft, said device comprising:
- a barrel and a reaction mass, each of generally circular cross section,
- said barrel being hollow and comprising an outside coupler formed by the exterior surface of an upper portion of said barrel, a reaction mass interface formed by the exterior surface of a lower portion of said barrel, a collar between said outside coupler and said reaction mass interface, and an inside coupler formed by the inside surface of said barrel, said inside coupler overlapping both said outside coupler and said reaction mass interface;
- said inside coupler being slightly larger in diameter than the outside diameter of the coupling end of said second shaft, such that said end of said second shaft is able to be inserted into said inside coupler and adhered thereto;
- said outside coupler being slightly smaller in diameter than the inside diameter of said coupling end of said first shaft such that said outside coupler is able to be inserted into said coupling end and adhered thereto;
- the diameter of said collar being larger than the diameters of said outside coupler and said reaction mass interface;
- said reaction mass comprising an upper portion and a lower portion,
- said upper portion having an inside diameter slightly larger than the outside diameter of said reaction mass interface, the length of said upper portion approximately corresponding to the length of said reaction mass interface, such that said upper portion of said reaction mass is able to be slid over said reaction mass interface and adhered thereto;
- said lower portion having an inside diameter slightly larger than the outside diameter of said coupling end of said second shaft.
A golf club shaft comprising:
- a first shaft member and a second shaft member, each said shaft member having a coupling end, the coupling end of the first shaft being hollow with an inside diameter being greater than the outside diameter of the coupling end of the second shaft;
- a barrel and a reaction mass, each of generally circular cross section,
- said barrel being hollow and comprising an outside coupler formed by the exterior surface of an upper portion of said barrel, a reaction mass interface formed by the exterior surface of a lower portion of said barrel, and an inside coupler formed by the inside surface of said barrel, said inside coupler overlapping both said outside coupler and said reaction mass interface;
- said inside coupler being slightly larger in diameter than the outside diameter of the coupling end of said second shaft, said end of said second shaft inserted into said inside coupler and adhered thereto in a position overlapping said outside coupler;
- said outside coupler being slightly smaller in diameter than the inside diameter of said coupling end of said first shaft, said outside coupler inserted into said coupling end and adhered thereto;
- said reaction mass comprising an upper portion and a lower portion,
- said upper portion having an inside diameter slightly larger than the outside diameter of said reaction mass interface, the length of said upper portion approximately corresponding to the length of said reaction mass interface, said upper portion of said reaction mass slid over said reaction mass interface and adhered thereto;
- said lower portion having an inside diameter slightly larger than the outside diameter of said coupling end of said second shaft.
Dependencies are inferred from the claim text.