Invention Grant
US07867114B2 Multi-walled tubular baseball bats with barrel inserts of variable geometry
有权
具有可变几何形状的桶形插入物的多壁管状棒球棒
- Patent Title: Multi-walled tubular baseball bats with barrel inserts of variable geometry
- Patent Title (中): 具有可变几何形状的桶形插入物的多壁管状棒球棒
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Application No.: US11740519Application Date: 2007-04-26
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Publication No.: US07867114B2Publication Date: 2011-01-11
- Inventor: Terrance William Sutherland , Stephen Fitzgerald , Frederic St. Laurent
- Applicant: Terrance William Sutherland , Stephen Fitzgerald , Frederic St. Laurent
- Assignee: CE Composites Baseball Inc.
- Current Assignee: CE Composites Baseball Inc.
- Agency: Miltons IP
- Agent Sheema Khan
- Main IPC: A63B59/06
- IPC: A63B59/06

Abstract:
A multi-walled, tubular baseball bat has a barrel portion with a mid-section wherein the radial stiffness of the overall barrel wall varies along the barrel length to provide an enlarged sweetspot, improved soft feel and performance, plus unique sounds upon impact. The bat has a frame with a barrel portion of consistent diameter. A secondary member, or members, of tubular form extend internally along the barrel. The secondary member provides the required radial stiffness variation by: 1) variations in the thickness of the wall of the secondary member or by, 2) secondary members with unique geometric external surface profiles or by, 3) the presence of functional air cavities, with or without closed ends, between the main bat frame and the secondary member or members or by, 4) the presence of numerous annular secondary members located side by side less than one-half the length of the barrel portion.
Public/Granted literature
- US20070254752A1 MULTI-WALLED TUBULAR BASEBALL BATS WITH BARREL INSERTS OF VARIABLE GEOMETRY Public/Granted day:2007-11-01
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