Patent US2363632A successfully refreshed from Google Patents.
Patent US3703290A successfully refreshed from Google Patents.
US3703290A
Expired / Lapsed
US
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Ball bat construction
Assignee: Alcoa Corp
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Filing: 1971-03-08
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Granted: 1972-11-21
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Expires: 1991-03-08
Abstract
Abstract An end plug for a hollow ball bat. The end plug has a substantially rigid inner plug member and a resiliently compressible outer plug member secured to the inner member. The outer plug member has a periphery provided with a generally cylindrical lower portion and an upper portion separated from the lower portion by an outwardly open annular recess. The inner plug member has a generally radially outwardly directed stabilizer portion which extends radially outwardly at least to a position adjacent to the periphery of the outer plug member. The outwardly directed stabilizer portion of the inner plug member may be divided into a plurality of individual stabilizer segments and may be provided with underlying reinforcing members. A hollow ball bat having a generally cylindrical barrel portion and a generally cylindrical handle portion. At least one of the barrel and handle portions terminating in an open end provided with a transversely inwardly directed flange which is engaged within the annular recess of the end plug to provide an effective mechanical joint between the bat and the end plug. The composite end plug serves to provide both sound and vibration deadening means and integral structural reinforcing means resisting relative axial movement between the end plug and the ball bat.
Inventors
- 👤 Richard C Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:25
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/54; A63B59/00; A63B59/50; A63B59/51; A63B60/06; A63B60/16; A63B2102/00; A63B2102/18; Y; Y10; Y10S; Y10S273/00; Y10S273/02; Y10S273/05
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
174 words
A hollow metal bat body comprising a hollow metal bat body having a generally cylindrical barrel portion and a generally cylindrical handle portion, at least one of said barrel and handle portions terminating in an open end, at least one said open end having a generally radially inwardly directed flange, a plug element extending into said open end, said plug element having an outer periphery provided with a lower portion and an upper portion separated from said lower portion by an annular recess, said transversely inwardly directed flange of said open end extending into said annular recess to establish a joint between said plug element and said bat body, said plug element having an inner plug member and an outer plug member secured thereto, said outer plug member being composed of a material which is resiliently compressible, said inner plug member composed of a substantially rigid material, and said inner plug member having a radially outwardly directed stabilizer portion extending at least to a position adjacent the outer periphery of said outer plug member.
Claim 2
Dependent Claim
174 words
A hollow metal bat body comprising a hollow metal bat body having a generally cylindrical barrel portion and a generally cylindrical handle portion, at least one of said barrel and handle portions terminating in an open end, at least one said open end having a generally radially inwardly directed flange, a plug element extending into said open end, said plug element having an outer periphery provided with a lower portion and an upper portion separated from said lower portion by an annular recess, said transversely inwardly directed flange of said open end extending into said annular recess to establish a joint between said plug element and said bat body, said plug element having an inner plug member and an outer plug member secured thereto, said outer plug member being composed of a material which is resiliently compressible, said inner plug member composed of a substantially rigid material, and said inner plug member having a radially outwardly directed stabilizer portion extending at least to a position adjacent the outer periphery of said outer plug member.
Claim 3
Dependent Claim
174 words
A hollow metal bat body comprising a hollow metal bat body having a generally cylindrical barrel portion and a generally cylindrical handle portion, at least one of said barrel and handle portions terminating in an open end, at least one said open end having a generally radially inwardly directed flange, a plug element extending into said open end, said plug element having an outer periphery provided with a lower portion and an upper portion separated from said lower portion by an annular recess, said transversely inwardly directed flange of said open end extending into said annular recess to establish a joint between said plug element and said bat body, said plug element having an inner plug member and an outer plug member secured thereto, said outer plug member being composed of a material which is resiliently compressible, said inner plug member composed of a substantially rigid material, and said inner plug member having a radially outwardly directed stabilizer portion extending at least to a position adjacent the outer periphery of said outer plug member.
Claim 4
Dependent Claim
174 words
A hollow metal bat body comprising a hollow metal bat body having a generally cylindrical barrel portion and a generally cylindrical handle portion, at least one of said barrel and handle portions terminating in an open end, at least one said open end having a generally radially inwardly directed flange, a plug element extending into said open end, said plug element having an outer periphery provided with a lower portion and an upper portion separated from said lower portion by an annular recess, said transversely inwardly directed flange of said open end extending into said annular recess to establish a joint between said plug element and said bat body, said plug element having an inner plug member and an outer plug member secured thereto, said outer plug member being composed of a material which is resiliently compressible, said inner plug member composed of a substantially rigid material, and said inner plug member having a radially outwardly directed stabilizer portion extending at least to a position adjacent the outer periphery of said outer plug member.
Claim 5
Dependent Claim
32 words
The hollow ball bat of claim 1, including the maximum diameter of said inner plug member is greater than the diameter of said end opening defined by said radially Inwardly directed flange.
Claim 6
Dependent Claim
37 words
The hollow ball bat of claim 2, including said outwardly directed stabilizer portion of said inner plug member having an outer extremity terminating in contact with the inner surface of said barrel portion of said ball bat.
Claim 7
Dependent Claim
77 words
The hollow ball bat of claim 2, including said plug element secured within said barrel portion of said bat, said lower portion of said outer plug member having a generally cylindrical peripheral configuration, said upper portion of said outer plug member being upwardly domed, said annular recess defined by an upper annular surface and a lower annular surface, and said upper annular surface in overlying surface to surface contact with said inwardly directed flange of said barrel.
Claim 8
Dependent Claim
46 words
The hollow ball bat of claim 2, including said inner plug member composed of a material selected from the group consisting of impact styrene, brass, steel and aluminum, and said outer plug member composed of a material selected from the group consisting of plastic and rubber.
Claim 9
Dependent Claim
45 words
The hollow ball bat of claim 2, including said annular recess defined by an upper annular surface and a lower annular surface, and said lower annular surface in underlying surface to surface contact with a portion of said inwardly directed flange of said cylindrical barrel.
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |