Sport good of composite material with lighter weight and greater rigidity

• US 7,150,692 B2
• Filed: 11/01/2004
• Issued: 12/19/2006
• Est. Priority Date: 11/01/2004
• Status: Expired due to Fees

• Current Assignee: Arthur Hong
• Original Assignee: Arthur Hong
• Inventors: Hong, Arthur
• Primary Examiner(s): Graham, Mark S.
• Application Number:
  US10/976,796
• Publication Number:
  US 20060094546A1
• Time in Patent Office: 778 Days
• Field of Search: 473560-568
• US Class Current: 473/561
• CPC Class Codes: A63B 2102/16 Table tennis
• CPC Class Codes: A63B 2102/18 Baseball, rounders or similar games
• CPC Class Codes: A63B 2102/24 Ice hockey
• CPC Class Codes: A63B 2209/02 with reinforcing fibres, e.g. carbon, polyamide fibres
• CPC Class Codes: A63B 2225/62 Inflatable
• CPC Class Codes: A63B 49/02 Frames
• CPC Class Codes: A63B 59/40 Rackets or the like with flat striking surfaces for hitting a ball in the air, e.g. for table tennis
• CPC Class Codes: A63B 59/50 Substantially rod-shaped bats for hitting a ball in the air, e.g. for baseball
• CPC Class Codes: A63B 59/70 with bent or angled lower parts for hitting a ball on the ground, on an ice-covered surface, or in the air, e.g. for hockey or hurling
• CPC Class Codes: A63B 60/002 Resonance frequency related characteristics
• CPC Class Codes: A63B 60/06 Handles
• CPC Class Codes: A63B 60/08 characterised by the material
• CPC Class Codes: A63B 60/10 with means for indicating correct holding positions A63B60/12 takes precedence
• CPC Class Codes: A63B 60/16 Caps; Ferrules
• CPC Class Codes: A63B 60/42 Devices for measuring, verifying, correcting or customising the inherent characteristics of golf clubs, bats, rackets or the like, e.g. measuring the maximum torque a batting shaft can withstand

Abstract

A sport good, such as hockey stick, Ping-Pong bat, baseball bat, ski stick and so on, has a rigid member made of a composite material. The rigid member has a chamber therein, in which a high-pressure gas is filled to make the sport good having both properties of lighter weight and greater rigidity.

Claims

1. A hockey stick, comprising:

a rigid hollow shaft made from a carbon-fiber composite material having only a single chamber therein, and

a blade which is not hollow fixed to seal the opening at a first end of the hollow shaft;

wherein a plunger having an airway therethrough with a check valve therein closes a second end of the hollow shaft; and

wherein said single chamber is filled with a high-pressure gas at 8 Kg/cm².