US4682773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baseball training bat
Assignee: Fairchild Holding Corp
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Filing: 1985-05-28
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Granted: 1987-07-28
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Expires: 2005-05-28
Abstract
Abstract A bat has a generally uniform outside diameter from its handle through its extension from the handle through to its opposite end. The outside of the bat beyond the handle is polished and it has an interior cavity. Reinforcing is providing in the cavity to increase resistance of the bat to bending upon impact. The reinforcing and bat body proper combine to attribute swing weight and feel to the bat which approximates that of a conventional flared bat.
Inventors
- 👤 Gino Pomilia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:53
CPC Classifications
A; A63; A63B; A63B60/00; A63B59/00; A63B59/50; A63B2102/00; A63B2102/18; Y; Y10; Y10S; Y10S273/00; Y10S273/08
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
198 words
A bat comprising an elongated hollow tubular member having opposite ends said elongated hollow tubular member being between 32 and 36 inches in length and between 48 and 55 ounces in weight, and, said hollow tubular member having a central cavity and including a handle portion adapted to be gripped by a batter and a shaft portion extending from said handle portion and providing a striking surface for a thrown ball, means within said central cavity for reinforcing said hollow tubular member against bending, the handle portion having a generally uniform diameter along its length, said shaft portion having a diameter along the length thereof which is substantially equal to that of the diameter of said handle portion, the weight to length ratio of said bat being substantially constant along the length of said bat, and the diameter of said shaft portion being substantially uniform along the length thereof so that the striking surface for said bat is of uniform diameter from the handle portion through the end of said shaft portion remote from said handle portion and so that said striking surface is smaller in diameter than that of a conventional bat having a flared striking surface.
Claim 2
Dependent Claim
198 words
A bat comprising an elongated hollow tubular member having opposite ends said elongated hollow tubular member being between 32 and 36 inches in length and between 48 and 55 ounces in weight, and, said hollow tubular member having a central cavity and including a handle portion adapted to be gripped by a batter and a shaft portion extending from said handle portion and providing a striking surface for a thrown ball, means within said central cavity for reinforcing said hollow tubular member against bending, the handle portion having a generally uniform diameter along its length, said shaft portion having a diameter along the length thereof which is substantially equal to that of the diameter of said handle portion, the weight to length ratio of said bat being substantially constant along the length of said bat, and the diameter of said shaft portion being substantially uniform along the length thereof so that the striking surface for said bat is of uniform diameter from the handle portion through the end of said shaft portion remote from said handle portion and so that said striking surface is smaller in diameter than that of a conventional bat having a flared striking surface.
Claim 3
Dependent Claim
25 words
A bat as set forth in claim 1 wherein said handle portion and said shaft portion are comprised of an elongated constant diameter metal tube.
Claim 4
Dependent Claim
19 words
A bat as set forth in claim 1 wherein said shaft portion includes a polished, low friction external surface.
Claim 5
Dependent Claim
39 words
A bat as set forth in claim 1 wherein said elongated hollow tubular member includes an elongated central cylindrical cavity, and further including a foamed polymer material filling said central cavity and reinforcing said hollow tubular member against bending.
Claim 6
Dependent Claim
26 words
A bat as set forth in claim 4 wherein said foamed polymer material comprises urethane foam having a density greater than eight pounds per cubic foot.
Claim 7
Dependent Claim
67 words
A bat as set forth in claim 1 wherein said handle portion and said shaft portion comprise a continuous elongated metal tube having a constant outside diameter along its length from one end of the tube to an opposite end and an elongated central chamber extending from one end of said tube to the opposite end of said tube, and a foam polymer material filling said chamber.
Claim 8
Dependent Claim
30 words
A bat as set forth in claim 6 wherein said elongated metal tube includes an elongated cylindrical outer surface, said outer surface being polished at least along said shaft portion.
Claim 9
Dependent Claim
50 words
A bat as set forth in claim 1 wherein said central cavity extends from one end of said hollow tubular member to an opposite end of said hollow tubular member and wherein said central cavity is filled with urethane foam having a density of approximately 16 pounds per cubic foot.
Claim 10
Dependent Claim
26 words
A bat as set forth in claim 1 wherein said practice bat has a weight to length ratio which is greater than 1.2 ounces per inch.
Claim 11
Dependent Claim
195 words
A bat comprising an elongated hollow tubular member having opposite ends, said bat being between 27 and 31 inches in length and between 39 and 46 ounces in weight, and said hollow tubular member having a central cavity and including a handle portion adapted to be gripped by a batter and a shaft portion extending from said handle portion and providing a striking surface for a thrown ball, means within said central cavity for reinforcing said hollow tubular member against bending, the handle portion having a generally uniform diameter along its length, said shaft portion having a diameter along the length thereof which is substantially equal to that of the diameter of said handle portion, the weight to length ratio of said bat being substantially constant along the length of said bat, and the diameter of said shaft portion being substantially uniform along the length thereof so that the striking surface for said bat is of uniform diameter from the handle portion through the end of said shaft portion remote from said handle portion and so that said striking surface is smaller in diameter than that of a conventional bat having a flared striking surface.
Claim 12
Dependent Claim
195 words
A bat comprising an elongated hollow tubular member having opposite ends, said bat being between 27 and 31 inches in length and between 39 and 46 ounces in weight, and said hollow tubular member having a central cavity and including a handle portion adapted to be gripped by a batter and a shaft portion extending from said handle portion and providing a striking surface for a thrown ball, means within said central cavity for reinforcing said hollow tubular member against bending, the handle portion having a generally uniform diameter along its length, said shaft portion having a diameter along the length thereof which is substantially equal to that of the diameter of said handle portion, the weight to length ratio of said bat being substantially constant along the length of said bat, and the diameter of said shaft portion being substantially uniform along the length thereof so that the striking surface for said bat is of uniform diameter from the handle portion through the end of said shaft portion remote from said handle portion and so that said striking surface is smaller in diameter than that of a conventional bat having a flared striking surface.
Claim 13
Dependent Claim
25 words
A bat as set forth in claim 10 wherein said handle portion and said shaft portion are comprised of an elongated constant diameter metal tube.
Claim 14
Dependent Claim
19 words
A bat as set forth in claim 10 wherein said shaft portion includes a polished, low friction external surface.
Claim 15
Dependent Claim
39 words
A bat as set forth in claim 10 wherein said elongated hollow tubular member includes an elongated central cylindrical cavity, and further including a foamed polymer material filling said central cavity and reinforcing said hollow tubular member against bending.
Claim 16
Dependent Claim
26 words
A bat as set forth in claim 13 wherein said foamed polymer material comprises urethane foam having a density greater than eight pounds per cubic foot.
Claim 17
Dependent Claim
67 words
A bat as set forth in claim 10 wherein said handle portion and said shaft portion comprise a continuous elongated metal tube having a constant outside diameter along its length from one end of the tube to an opposite end and an elongated central chamber extending from one end of said tube to the opposite end of said tube, and a foam polymer material filling said chamber.
Claim 18
Dependent Claim
30 words
A bat as set forth in claim 15 wherein said elongated metal tube includes an elongated cylindrical outer surface, said outer surface being polished at least along said shaft portion.
Claim 19
Dependent Claim
30 words
A bat as set forth in claim 10 wherein said elongated hollow tubular member is between 32 and 36 inches in length and between 48 and 55 ounces in weight.
Claim 20
Dependent Claim
50 words
A bat as set forth in claim 10 wherein said central cavity extends from one end of said hollow tubular member to an opposite end of said hollow tubular member and wherein said central cavity is filled with urethane foam having a density of approximately 16 pounds per cubic foot.
Claim 21
Dependent Claim
31 words
A bat as set forth in claim 10 wherein said bat has a weight to length ratio of approximately 1.4 to 1.6 ounces per inch along the length of said bat.
Claim 22
Dependent Claim
25 words
A bat as set forth in claim 10 wherein said bat has a weight to length ratio which is greater than 1.2 ounces per inch.
Claim 23
Dependent Claim
199 words
A bat comprising an elongated hollow tubular member having opposite ends, said bat having a weight to length ratio of approximately 1.4 to 1.6 ounces per inch along the length of said bat, and said hollow tubular member having a central cavity and including a handle portion adapted to be gripped by a batter and a shaft portion extending from said handle portion and providing a striking surface for a thrown ball, means within said central cavity for reinforcing said hollow tubular member against bending, the handle portion having a generally uniform diameter along its length, said shaft portion having a diameter along the length thereof which is substantially equal to that of the diameter of said handle portion, the weight to length ratio of said bat being substantially constant along the length of said bat, and the diameter of said shaft portion being substantially uniform along the length thereof so that the striking surface for said bat is of uniform diameter from the handle portion through the end of said shaft portion remote from said handle portion and so that said striking surface is smaller in diameter than that of a conventional bat having a flared striking surface.
Claim 24
Dependent Claim
199 words
A bat comprising an elongated hollow tubular member having opposite ends, said bat having a weight to length ratio of approximately 1.4 to 1.6 ounces per inch along the length of said bat, and said hollow tubular member having a central cavity and including a handle portion adapted to be gripped by a batter and a shaft portion extending from said handle portion and providing a striking surface for a thrown ball, means within said central cavity for reinforcing said hollow tubular member against bending, the handle portion having a generally uniform diameter along its length, said shaft portion having a diameter along the length thereof which is substantially equal to that of the diameter of said handle portion, the weight to length ratio of said bat being substantially constant along the length of said bat, and the diameter of said shaft portion being substantially uniform along the length thereof so that the striking surface for said bat is of uniform diameter from the handle portion through the end of said shaft portion remote from said handle portion and so that said striking surface is smaller in diameter than that of a conventional bat having a flared striking surface.
Claim 25
Dependent Claim
25 words
A bat as set forth in claim 21 wherein said handle portion and said shaft portion are comprised of an elongated constant diameter metal tube.
Claim 26
Dependent Claim
19 words
A bat as set forth in claim 21 wherein said shaft portion includes a polished, low friction external surface.
Claim 27
Dependent Claim
39 words
A bat as set forth in claim 21 wherein said elongated hollow tubular member includes an elongated central cylindrical cavity, and further including a foamed polymer material filling said central cavity and reinforcing said hollow tubular member against bending.
Claim 28
Dependent Claim
26 words
A bat as set forth in claim 24 wherein said foamed polymer material comprises urethane foam having a density greater than eight pounds per cubic foot.
Claim 29
Dependent Claim
67 words
A bat as set forth in claim 21 wherein said handle portion and said shaft portion comprise a continuous elongated metal tube having a constant outside diameter along its length from one end of the tube to an opposite end and an elongated central chamber extending from one end of said tube to the opposite end of said tube, and a foam polymer material filling said chamber.
Claim 30
Dependent Claim
30 words
A bat as set forth in claim 26 wherein said elongated metal tube includes an elongated cylindrical outer surface, said outer surface being polished at least along said shaft portion.
Claim 31
Dependent Claim
30 words
A bat as set forth in claim 21 wherein said elongated hollow tubular member is between 32 and 36 inches in length and between 48 and 55 ounces in weight.
Claim 32
Dependent Claim
27 words
A bat as set forth in claim 28 wherein said bat is between 27 and 31 inches in length and between 39 and 46 ounces in weight.
Claim 33
Dependent Claim
50 words
A bat as set forth in claim 21 wherein said central cavity extends from one end of said hollow tubular member to an opposite end of said hollow tubular member and wherein said central cavity is filled with urethane foam having a density of approximately 16 pounds per cubic foot.
Claim 34
Dependent Claim
25 words
A bat as set forth in claim 21 wherein said bat has a weight to length ratio which is greater than 1.2 ounces per inch.
References Cited (Backward Citations)
US1994069A
Cited
US3972528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |