Patent US4836541A successfully refreshed from Google Patents.
US4836541A
Expired / Lapsed
US
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Lead arm development bat
Assignee: Individual
•
Filing: 1987-07-14
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Granted: 1989-06-06
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Expires: 2007-07-14
Abstract
Abstract A wood or aluminum practice bat designed to be swung by one arm is provided for developing hitting skills. The bat comprises a continuously tapered barrel portion, and a substantially cylindrical handle portion connected by a sharply tapered portion. The handle portion of the bat has a length which effectively permits grasping by only one hand at a time, thus confining the bat for its intended use. The bat, which has an overall length of about twenty-two inches, and weighs about twenty ounces, is intended to be used in various drills designed to facilitate development and coordination of the movements, and muscle groups which control the movements, of each arm individually.
Inventors
- 👤 Douglas R. Henley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:01
CPC Classifications
A; A63; A63B; A63B60/00; A63B59/00; A63B59/50; A63B59/52; A63B59/51; A63B69/00; A63B69/0002; A63B59/58; A63B2059/581; A63B2102/00; A63B2102/18; A63B2102/182
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
90 words
A one-piece batting practice bat for developing the lead arm of a ballplayer comprising: a barrel portion about fourteen inches in length which tapers continuously inwardly from an outermost edge having a first diameter, to an inner edge having a second diameter; and a handle portion about six inches in length adjacent the second diameter portion of the barrel, wherein the handle portion has a third diameter which is substantially one-half of said second diameter, said barrel and handle portions connected by a relatively short and sharply tapered connector portion.
Claim 2
Dependent Claim
90 words
A one-piece batting practice bat for developing the lead arm of a ballplayer comprising: a barrel portion about fourteen inches in length which tapers continuously inwardly from an outermost edge having a first diameter, to an inner edge having a second diameter; and a handle portion about six inches in length adjacent the second diameter portion of the barrel, wherein the handle portion has a third diameter which is substantially one-half of said second diameter, said barrel and handle portions connected by a relatively short and sharply tapered connector portion.
Claim 3
Dependent Claim
21 words
A one-piece batting practice bat as defined in claim 1 wherein said connector portion has a length of about two inches.
Claim 4
Dependent Claim
15 words
A one-piece batting practice bat as defined in claim 1 wherein said bat is wood.
Claim 5
Dependent Claim
20 words
A one-piece batting practice bat as defined in claim 1 wherein said bat has a weight of about twenty ounces.
Claim 6
Dependent Claim
24 words
A one-piece batting practice bat as defined in claim 1 wherein the cross-sectional shape of the bat anywhere along its length is substantially circular.
Claim 7
Dependent Claim
71 words
An aluminum batting practice bat for developing the lead arm of a ballplayer comprising a barrel portion approximately fourteen inches long, said barrel portion tapering from a first diameter at an outermost edge to a second diameter at an innermost edge; a handle portion approximately six inches long and having a substantially uniform third diameter approximately one-half the second diameter, and, a sharply tapered portion connecting said barrel and handle portions.
Claim 8
Dependent Claim
71 words
An aluminum batting practice bat for developing the lead arm of a ballplayer comprising a barrel portion approximately fourteen inches long, said barrel portion tapering from a first diameter at an outermost edge to a second diameter at an innermost edge; a handle portion approximately six inches long and having a substantially uniform third diameter approximately one-half the second diameter, and, a sharply tapered portion connecting said barrel and handle portions.
Claim 9
Dependent Claim
24 words
A bat as defined in claim 6 wherein the handle portion remote from said sharply tapered portion is formed with an enlarged butt end.
Claim 10
Dependent Claim
18 words
A bat as defined in claim 6 wherein said bat has an overall length of about twenty-two inches.
Claim 11
Dependent Claim
21 words
A bat as defined in claim 8 wherein the cross-sectional shape of the bat anywhere along its length is substantially circular.
Claim 12
Dependent Claim
86 words
A batting practice bat comprising means for developing the lead arm of a ballplayer, said means including a barrel portion tapered from a forward free end to a rearward end; a connector portion sharply tapering rearwardly and inwardly from the rearward end of the barrel portion; and a handle portion of substantially constant diameter extending rearwardly from the connector portion and terminating at an enlarged end; wherein said bat is about twenty-two inches in overall length, and said handle portion is about six inches in length.
Claim 13
Dependent Claim
86 words
A batting practice bat comprising means for developing the lead arm of a ballplayer, said means including a barrel portion tapered from a forward free end to a rearward end; a connector portion sharply tapering rearwardly and inwardly from the rearward end of the barrel portion; and a handle portion of substantially constant diameter extending rearwardly from the connector portion and terminating at an enlarged end; wherein said bat is about twenty-two inches in overall length, and said handle portion is about six inches in length.
Claim 14
Dependent Claim
22 words
A batting practice bat as defined in claim 10 wherein said connector portion is approximately one-third the length of said handle portion.
Claim 15
Dependent Claim
16 words
A batting practice bat as defined in claim 10 wherein said bat is constructed of wood.
Claim 16
Dependent Claim
16 words
A batting practice bat as defined in claim 10 wherein said bat is constructed of aluminum.
Claim 17
Dependent Claim
19 words
A batting practice bat as defined in claim 10 wherein said connector portion is about two inches in length.
Claim 18
Dependent Claim
16 words
A batting practice bat as defined in claim 10 wherein said bat weighs about twenty ounces.
Claim 19
Dependent Claim
23 words
A batting practice bat as defined in claim 10 wherein the cross-sectional shape of the bat anywhere along its length is substantially circular.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-05 | 1992-12-05 | 1993-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-05 | 1996-12-05 | 1997-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-05 | 2000-12-05 | 2001-06-06 | $7700.00 | Window Closed / Lapsed |