US4113248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baseball bat made of light alloy
Assignee: Aikoh Co Ltd
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Filing: 1976-05-07
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Granted: 1978-09-12
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Expires: 1996-05-07
Abstract
Abstract A baseball bat made of a light alloy having on its surface a plating of heat hardened nickel-phosphorus or nickel-boron alloy.
Inventors
- 👤 Seiichi Yanagioka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:52
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/51; A63B2102/00; A63B2102/18; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/1275
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
A baseball bat having a barrel portion and a handle portion comprised of an aluminum alloy having on its surface a heat treated metallic alloy plating selected from the group consisting of nickel-phosphorus and nickel-boron, said metallic plating having been heat treated at a temperature sufficient to cause said plating to have a Vickers hardness in excess of about 550.
Claim 2
Dependent Claim
60 words
A baseball bat having a barrel portion and a handle portion comprised of an aluminum alloy having on its surface a heat treated metallic alloy plating selected from the group consisting of nickel-phosphorus and nickel-boron, said metallic plating having been heat treated at a temperature sufficient to cause said plating to have a Vickers hardness in excess of about 550.
Claim 3
Dependent Claim
16 words
The baseball bat of claim 1 wherein said Vickers hardness ranges from about 700 to 1200.
Claim 4
Dependent Claim
24 words
The baseball bat of claim 1 wherein said bat has been heat treated at a temperature ranging from about 220° to about 400° C.
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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |