US4572508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite laminated baseball bat
Assignee: Individual
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Filing: 1984-11-14
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Granted: 1986-02-25
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Expires: 2004-11-14
Abstract
Abstract A baseball bat formed from a plurality of laminations. The laminations are held together through the engagement of dovetail shaped grooves and ridges located on the mating surfaces of the laminations. Layers of resin impregnated carbon fiber webs are sandwiched between the wooden laminations so as to provide strength and shock absorbing characteristics.
Inventors
- 👤 Chin-San You
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:29
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/52; A63B2102/00; A63B2102/18; A63B60/00; A63B60/54; Y; Y10; Y10S; Y10S273/00; Y10S273/23
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
75 words
A baseball bat comprising: a hitting portion and a tapered grip end, said bat being made of a plurality of wooden laminations, said laminations having surfaces on which are disposed interlocking means for joining the plurality of laminations together to form said bat, said interlocking means extending from said grip to said end hitting portion and being non-uniform in cross-section; said bat further comprising at least one reinforced plastic layer interposed between said wooden laminations.
Claim 2
Dependent Claim
75 words
A baseball bat comprising: a hitting portion and a tapered grip end, said bat being made of a plurality of wooden laminations, said laminations having surfaces on which are disposed interlocking means for joining the plurality of laminations together to form said bat, said interlocking means extending from said grip to said end hitting portion and being non-uniform in cross-section; said bat further comprising at least one reinforced plastic layer interposed between said wooden laminations.
Claim 3
Dependent Claim
25 words
A baseball bat as set forth in claim 1, wherein said interlocking means comprises a plurality of interengaging protruberances and grooves of dovetail cross-sectional shape.
Claim 4
Dependent Claim
24 words
A baseball bat as set forth in claim 1 wherein said reinforced plastic material comprises a carbon fiber web impregnated with a thermosetting resin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-24 | 1989-08-26 | 1990-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-24 | 1993-08-26 | 1994-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-24 | 1997-08-26 | 1998-02-25 | $7700.00 | Window Closed / Lapsed |