Patent US3729196A successfully refreshed from Google Patents.
US3729196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal bat
Assignee: WORTH BAT CO Inc
•
Filing: 1970-10-01
•
Granted: 1973-04-24
•
Expires: 1990-10-01
Abstract
Abstract A baseball bat having a hollow metal casing formed from a tube by swaging to form a conventional bat-shaped casing with the barrel end rolled over to form an inturned lip to interlock with a grooved end plug. A handle grip covers the handle end of the casing, and the interior of the casing is filled with a soundabsorbing wadding. The interior of the handle end of the casing is reamed out to obtain a center of gravity at a desired point forward of the midpoint of the bat.
Inventors
- 👤 J Heald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:08
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/51; A63B60/00; A63B60/06; A63B60/10; A63B60/14; A63B2102/00; A63B2102/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
172 words
A metal ball bat comprising a hollow, tubular metal casing formed from a seamless tube, said bat having a barrel portion of a constant predetermined outer diameter, an intermediate section of progressively decreasing outer diameter tapering into a handle portion of reduced uniform outer diameter, said barrel portion having a uniform wall thickness throughout its length, said intermediate section having a progressively increasing wall thickness from its juNcture at the barrel portion to its juncture at the handle portion, said handle portion having a part thereof of a wall thickness less than that of the wall thickness of said intermediate section at the juncture of said intermediate section and said handle portion, said part being of sufficiently reduced wall thickness and/or of sufficient length within said handle portion as to locate the center of gravity of said casing beyond the longitudinal center of said casing toward said barrel portion, means to close the end of the barrel portion of the casing, and means to close the handle portion end of said casing.
Claim 2
Dependent Claim
172 words
A metal ball bat comprising a hollow, tubular metal casing formed from a seamless tube, said bat having a barrel portion of a constant predetermined outer diameter, an intermediate section of progressively decreasing outer diameter tapering into a handle portion of reduced uniform outer diameter, said barrel portion having a uniform wall thickness throughout its length, said intermediate section having a progressively increasing wall thickness from its juNcture at the barrel portion to its juncture at the handle portion, said handle portion having a part thereof of a wall thickness less than that of the wall thickness of said intermediate section at the juncture of said intermediate section and said handle portion, said part being of sufficiently reduced wall thickness and/or of sufficient length within said handle portion as to locate the center of gravity of said casing beyond the longitudinal center of said casing toward said barrel portion, means to close the end of the barrel portion of the casing, and means to close the handle portion end of said casing.
Claim 3
Dependent Claim
28 words
The bat of claim 1 wherein said means to close the end of the barrel portion of the casing comprises a plug in the end of the barrel.
Claim 4
Dependent Claim
35 words
A metal bat as claimed in claim 1 wherein, the means closing the handle portion end of the casing is a handle grip having a sleeve to fit over the handle portion of the casing.
Claim 5
Dependent Claim
19 words
A metal bat as claimed in claim 3 wherein, there is wadding filling the hollow interior of the casing.
Claim 6
Dependent Claim
15 words
A metal bat as claimed in claim 4 wherein, the wadding is of cellulosic fibers.
References Cited (Backward Citations)
US1499128A
Cited
US1611858A
Cited
GB420314A
Cited
US2066962A
Cited
US2061145A
Cited
US2100307A
Cited
US2379006A
Cited
GB679292A
Cited
US2818057A
Cited
US2884969A
Cited
US3138380A
Cited
US3083969A
Cited
US3232616A
Cited
US3479030A
Cited
US3595577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |