Patent US5533723A successfully refreshed from Google Patents.
US5533723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite baseball bat with cavitied core
Assignee: Baum Research and Development Co Inc
•
Filing: 1995-07-20
•
Granted: 1996-07-09
•
Expires: 2015-07-20
Abstract
Abstract A baseball bat or the like comprises a tube formed with an outer layer of wood-like veneer covering a layer of fiber reinforced resin, with the tube layers being impregnated with and bonded to one another with a cured resin. The ends of the tube are closed off with caps adhered to the tube and preferably molded in place. The tube preferably has a foam or aluminum core including a central cavity, said core having sufficient resiliency to allow the tube to resiliently deform during impact with a baseball. The product is formed by molding over a form which may constitute the cavitied foam core or, alternatively, a forming mandrel which is removed after the resin is cured. The cavity may be filled with a material which is less dense than the core.
Inventors
- 👤 Charles S. Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:48
CPC Classifications
B; B27; B27D; B27D1/00; B27D1/04; B27D1/08; A; A63; A63B; A63B59/00; A63B59/50; A63B59/52; A63B59/70; B27M; B27M3/00; B27M3/22; B29; B29C; B29C63/00; B29C63/0017; B29C63/0021; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B29C70/088; B29C70/28; B29C70/30; B29C70/34; B29C70/345; G; G10; G10D; G10D13/00; G10D13/10; G10D13/12; A63B2102/00; A63B2102/18; A63B2102/24; A63B2209/00; A63B2209/02; A63B59/54; B29K; B29K2711/00; B29K2711/14; B29L; B29L2031/00; B29L2031/52; B29L2031/5227
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
57 words
A method of forming a baseball bat comprising: forming a tube comprising an outer layer of wood veneer overlying an inner layer of fiber reinforced resin, the two layers being impregnated and adhered to one another by said resin; curing said resin; and forming a self-forming plastic core within said tube by a foam in place method.
Claim 2
Independent Claim
57 words
A method of forming a baseball bat comprising: forming a tube comprising an outer layer of wood veneer overlying an inner layer of fiber reinforced resin, the two layers being impregnated and adhered to one another by said resin; curing said resin; and forming a self-forming plastic core within said tube by a foam in place method.
Claim 3
Dependent Claim
39 words
The method of claim 1 further comprising partially hollowing out the plastic core so as to form a central cavity therein extending from a barrel end of said tube and along the length of said tube for a distance.
Claim 4
Dependent Claim
29 words
The method of claim 1 in which said tube is formed over a mandrel and the resin is cured by heating to a temperature in excess of 150° F.
Claim 5
Independent Claim
76 words
The method of forming a baseball bat having a relatively small diameter handle tapering to a relatively large diameter barrel, comprising: overlaying a form with a contoured sock comprising a plurality of layers of fabric formed of the high tensile fibers, with various of the layers having their fibers at orientations angled relative to one another; impregnating the fabric socks with liquid resin; overlaying the socks with a sheet of wood veneer; and curing the resin.
Claim 6
Independent Claim
76 words
The method of forming a baseball bat having a relatively small diameter handle tapering to a relatively large diameter barrel, comprising: overlaying a form with a contoured sock comprising a plurality of layers of fabric formed of the high tensile fibers, with various of the layers having their fibers at orientations angled relative to one another; impregnating the fabric socks with liquid resin; overlaying the socks with a sheet of wood veneer; and curing the resin.
Claim 7
Dependent Claim
14 words
The method of claim 4 in which resin is cured at an elevated temperature.
Claim 8
Dependent Claim
11 words
The method of claim 4 wherein said form constitutes a core.
Claim 9
Dependent Claim
38 words
The method of claim 6 further including partially hollowing out the core so as to form a central cavity therein extending from a barrel end of said tube and along the length of said tube for a distance.
Claim 10
Dependent Claim
21 words
The method of claim 7 further including filling said central cavity with a material which is less dense than the core.
Claim 11
Dependent Claim
26 words
The method of claim 7 further including forming a tubular knob end and attaching said knob end to the handle end of the bat by epoxy,
Claim 12
Dependent Claim
27 words
The method of claim 7 in which said veneer sheet is imprinted with a logo prior to attachment of the veneer sheet to the resin coated fiber,
Claim 13
Dependent Claim
23 words
The method of claim 7 in which said resin is cured while said bat or the like is pressured in a vacuum bag.
Claim 14
Dependent Claim
18 words
The method of claim 7 wherein said resin is cured while said bat is pressured in matched dies.
Claim 15
Dependent Claim
33 words
The method of claim 12 wherein a knob end is molded to the handle of said bat and a cap is molded to the barrel end of said bat in said matched dies.
Claim 16
Dependent Claim
25 words
The method of claim 4 in which said sock is formed form two elongated planks of stacks of sheets with their longitudinal edges sewn together.
Claim 17
Dependent Claim
24 words
The method of claim 14 including placing a second sock over said sock with the seams of said socks displaced relative to one another.
References Cited (Backward Citations)
US5458330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-07-09 | 2000-01-08 | 2000-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-07-09 | 2004-01-08 | 2004-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-07-09 | 2008-01-08 | 2008-07-09 | $7700.00 | Window Closed / Lapsed |