US6497631B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball bat
Assignee: Wilson Sporting Goods Co
•
Filing: 1999-09-15
•
Granted: 2002-12-24
•
Expires: 2019-09-15
Abstract
Abstract A bat includes a handle portion, tubular impact portion and tubular insert mounted co-axially within the impact portion. A thin tubular composite member is bonded either to the inner or outer surface of the insert. Alternatively the composite member-reinforced insert may be mounted co-axially around the outer surface of the impact portion. In other embodiments, the composite member may be bonded directly to either the inner or outer surface of the impact portion.
Inventors
- 👤 Mark A. Fritzke
- 👤 Michael D. Eggiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:59
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/51; A63B2102/00; A63B2102/18
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
137 words
A multi-wall bat comprising: a metal substantially tubular body having a handle portion and an impact portion, the impact portion having an internal surface facing inwardly toward a center axis of the body; a generally tubular metal insert located coaxially within the tubular body, the insert having a first length measured in a direction substantially parallel to the axis, and an outer surface, the insert being retained adjacent to the impact portion, and at least a portion of the insert capable of moving substantially independently relative to the impact portion during bat-ball contact; and a composite member disposed between the internal surface of the body and the outer surface of the insert, the composite member having a second length measured in a direction substantially parallel to the axis, the first length being greater than the second length.
Claim 2
Dependent Claim
137 words
A multi-wall bat comprising: a metal substantially tubular body having a handle portion and an impact portion, the impact portion having an internal surface facing inwardly toward a center axis of the body; a generally tubular metal insert located coaxially within the tubular body, the insert having a first length measured in a direction substantially parallel to the axis, and an outer surface, the insert being retained adjacent to the impact portion, and at least a portion of the insert capable of moving substantially independently relative to the impact portion during bat-ball contact; and a composite member disposed between the internal surface of the body and the outer surface of the insert, the composite member having a second length measured in a direction substantially parallel to the axis, the first length being greater than the second length.
Claim 3
Dependent Claim
45 words
A bat according to claim 1 wherein the outer surface of the insert and internal surface of the impact portion are disposed relative to one another such that minimal shear loads can be transferred from one of the insert and impact portion to the other.
Claim 4
Dependent Claim
49 words
A bat according to claim 1 wherein a space is defined between the outer surface of the insert and internal surface of the impact portion, the space effectively defining at least a zero clearance, whereby the insert can be inserted into the tubular body without use of significant force.
Claim 5
Dependent Claim
20 words
A bat according to claim 1 wherein the composite member has greater strength in the circumferential direction than axial direction.
Claim 6
Dependent Claim
24 words
A bat according to claim 4 wherein the composite member contains fibers oriented substantially at ninety degrees relative a longitudinal axis of the insert.
Claim 7
Dependent Claim
25 words
A bat according to claim 1 wherein the composite member includes at least one layer bonded to at least a portion of the outer surface.
Claim 8
Dependent Claim
29 words
A bat according to claim 1 wherein the composite member includes at least one layer bonded to at least a portion of the internal surface of the impact portion.
Claim 9
Dependent Claim
19 words
A bat according to claim 1 wherein the composite member has a thickness of about 0.003 to 0.015 inch.
Claim 10
Dependent Claim
32 words
A bat according to claim 1 wherein the composite member includes at least one first layer bonded to the internal surface and at least one second layer bonded to the external surface.
Claim 11
Dependent Claim
20 words
A bat according to claim 7 wherein each layer has greater strength in the circumferential direction than the axial direction.
Claim 12
Dependent Claim
23 words
A bat according to claim 10 wherein each layer contains fibers oriented substantially at a ninety degree angle relative to the center axis.
Claim 13
Dependent Claim
18 words
A bat according to claim 11 wherein each layer has a thickness of about 0.003 to 0.015 inch.
Claim 14
Dependent Claim
32 words
The bat of claim 1 wherein the composite member is a substantially tubular and is bonded to one of the outer surface of the insert and the internal surface of the body.
Claim 15
Dependent Claim
34 words
The bat of claim 1 wherein the body includes an intermediate tapering portion and an end portion, and wherein the insert engages at least one of the intermediate tapering portion and the end portion.
Claim 16
Dependent Claim
16 words
The bat of claim 1 wherein the second length is approximately 60% of the first length.
Claim 17
Dependent Claim
30 words
The bat of claim 1 wherein the first length is within the range of 8-20 inches and wherein the second length is within the range of 3 to 16 inches.
Claim 18
Dependent Claim
45 words
The bat of claim 1 wherein the insert includes a distal end and a proximal end, wherein the composite member includes a distal and proximal end, and wherein the distal end of the insert is spaced apart from the distal end of the composite member.
Claim 19
Dependent Claim
45 words
The bat of claim 1 wherein the insert includes a distal end and a proximal end, wherein the composite member includes a distal and proximal end, and wherein the proximal end of the insert is spaced apart from the proximal end of the composite member.
Claim 20
Dependent Claim
23 words
The bat of claim 17 wherein the proximal end of the insert is spaced apart from the proximal end of the composite member.
Claim 21
Dependent Claim
151 words
A bat comprising: a handle portion; a substantially tubular impact portion; a tapered transition portion interconnecting the handle portion and impact portion; and a composite member supported by a substantially tubular metal carrier, the composite member having fibers oriented to give the metal carrier greater strength in a circumferential direction, the composite member being formed of at least one layer of composite material and having a total thickness less than about 0.015 inch, the composite member being supported in proximate coaxial relationship to the impact portion, the metal carrier having a first longitudinal dimension and the composite member having a second longitudinal dimension, the first longitudinal dimension being greater than the second longitudinal dimension; wherein the metal carrier is a substantially tubular support member separate from the impact portion, the support member being in coaxial proximate relationship to the impact portion so as to reinforce the impact portion during ball impact.
Claim 22
Dependent Claim
151 words
A bat comprising: a handle portion; a substantially tubular impact portion; a tapered transition portion interconnecting the handle portion and impact portion; and a composite member supported by a substantially tubular metal carrier, the composite member having fibers oriented to give the metal carrier greater strength in a circumferential direction, the composite member being formed of at least one layer of composite material and having a total thickness less than about 0.015 inch, the composite member being supported in proximate coaxial relationship to the impact portion, the metal carrier having a first longitudinal dimension and the composite member having a second longitudinal dimension, the first longitudinal dimension being greater than the second longitudinal dimension; wherein the metal carrier is a substantially tubular support member separate from the impact portion, the support member being in coaxial proximate relationship to the impact portion so as to reinforce the impact portion during ball impact.
Claim 23
Dependent Claim
25 words
The bat of claim 20 wherein metal carrier engages at least portion of at least one of the tapered transition portion and the impact portion.
Claim 24
Dependent Claim
16 words
The bat of claim 20 wherein the second dimension is approximately 60% of the first dimension.
Claim 25
Dependent Claim
30 words
The bat of claim 20 wherein the first dimension is within the range of 8-20 inches and wherein the second dimension is within the range of 3 to 16 inches.
Claim 26
Dependent Claim
133 words
A multi-wall bat for impacting a ball, the bat comprising: a first generally tubular member extending along a longitudinal axis, the first member having a handle portion, an intermediate tapered portion and a barrel portion; a second generally tubular member positioned coaxially with the first member, the second member being retained adjacent to the barrel portion and at least a portion of the second member being capable of moving substantially independently relative to the barrel portion during contact with the ball, the second member having a first length measured in a direction substantially parallel to the axis; and a composite member disposed between the first and second members, the composite member having a second length measured in a direction substantially parallel to the axis, the first length being greater than the second length.
Claim 27
Dependent Claim
133 words
A multi-wall bat for impacting a ball, the bat comprising: a first generally tubular member extending along a longitudinal axis, the first member having a handle portion, an intermediate tapered portion and a barrel portion; a second generally tubular member positioned coaxially with the first member, the second member being retained adjacent to the barrel portion and at least a portion of the second member being capable of moving substantially independently relative to the barrel portion during contact with the ball, the second member having a first length measured in a direction substantially parallel to the axis; and a composite member disposed between the first and second members, the composite member having a second length measured in a direction substantially parallel to the axis, the first length being greater than the second length.
Claim 28
Dependent Claim
13 words
The bat of claim 24 , wherein the first member comprises a metal.
Claim 29
Dependent Claim
13 words
The bat of claim 24 , wherein the second member comprises a metal.
Claim 30
Dependent Claim
24 words
The bat of claim 24 wherein the composite member is connected to at least a portion of one of the first and second members.
Claim 31
Dependent Claim
12 words
The bat of claim 24 wherein the second member is an insert.
Claim 32
Dependent Claim
13 words
The bat of claim 24 wherein the second member is an outer sleeve.
Claim 33
Dependent Claim
22 words
The bat of claim 24 wherein the second member engages at least one of the intermediate tapered portion and the barrel portion.
Claim 34
Dependent Claim
16 words
The bat of claim 24 wherein the second length is approximately 60% of the first length.
Claim 35
Dependent Claim
30 words
The bat of claim 24 wherein the first length is within the range of 8-20 inches and wherein the second length is within the range of 3 to 16 inches.
Claim 36
Dependent Claim
47 words
The bat of claim 24 wherein the second member includes a distal end and a proximal end, wherein the composite member includes a distal and proximal end, and wherein the distal end of the second member is spaced apart from the distal end of the composite member.
Claim 37
Dependent Claim
47 words
The bat of claim 24 wherein the second member includes a distal end and a proximal end, wherein the composite member includes a distal and proximal end, and wherein the proximal end of the second member is spaced apart from the proximal end of the composite member.
Claim 38
Dependent Claim
24 words
The bat of claim 33 wherein the proximal end of the second member is spaced apart from the proximal end of the composite member.
References Cited (Backward Citations)
US3963239A
Cited
US3876204A
Cited
US4014542A
Cited
JPS5113165A
Cited
US4116252A
Cited
US4082277A
Cited
US4047731A
Cited
US4348247A
Cited
GB2053696A
Cited
US4569521A
Cited
US4505479A
Cited
US4848745A
Cited
US4933040A
Cited
US5364095A
Cited
US5533723A
Cited
US5624115A
Cited
US5114144A
Cited
US5458330A
Cited
US5460369A
Cited
US5104123A
Cited
JPH04303477A
Cited
US5131651A
Cited
JPH0523407A
Cited
US5415398A
Cited
US5409214A
Cited
US5511777A
Cited
US5800293A
Cited
US5722908A
Cited
AU2358097A
Cited
US5676610A
Cited
US5899823A
Cited
US6042493A
Cited
US5954602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-12-23 | 2006-06-24 | 2006-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-12-23 | 2010-06-24 | 2010-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-12-23 | 2014-06-24 | 2014-12-24 | $7700.00 | Window Closed / Lapsed |