US3955816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warm-up bat
Assignee: Individual
•
Filing: 1974-03-11
•
Granted: 1976-05-11
•
Expires: 1994-03-11
Abstract
Abstract A warm-up bat with a closeable hollow chamber with granular weight material therein is provided to result in a practice ball bat with a distributed weight or bat-like feel. The bat is made in two sections. A handle section and a rigid tubular section. The tubular section is larger in diameter than the handle section and has a chamber therein. The handle section has one of its ends telescoped into one end of the tubular section and fastened therein; the other end of the handle section being engagable by a batters hands. The chamber of the tubular section is filled with a flowable weighting material such as sand and the other end of the tubular section is closed to retain the weighting material in the chamber.
Inventors
- 👤 Leonard R. Bratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:27
CPC Classifications
A; A63; A63B; A63B59/00; A63B59/50; A63B59/52; A63B2102/00; A63B2102/18; A63B60/00; A63B60/06; A63B60/22; A63B60/28
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 words
A practice bat comprising at least two main structural components, said components being an elongated handle section and a rigid tubular section having an elongated chamber therein; said tubular section being of larger external cross-sectional dimension than said handle section, said handle section having a hand engaging portion adjacent one end and a portion thereof at the other end telescoped into said tubular section in axial alignment therewith; means fastening said portion at the other end of said handle section in said tubular section; flowable particle weight means positioned in said chamber and spaced from each end of said tubular section to approximate the bat-like feel of an actual playing bat, said portion at the other end of said handle section closing one end of said chamber and means for closing the other end of said chamber.
Claim 2
Dependent Claim
137 words
A practice bat comprising at least two main structural components, said components being an elongated handle section and a rigid tubular section having an elongated chamber therein; said tubular section being of larger external cross-sectional dimension than said handle section, said handle section having a hand engaging portion adjacent one end and a portion thereof at the other end telescoped into said tubular section in axial alignment therewith; means fastening said portion at the other end of said handle section in said tubular section; flowable particle weight means positioned in said chamber and spaced from each end of said tubular section to approximate the bat-like feel of an actual playing bat, said portion at the other end of said handle section closing one end of said chamber and means for closing the other end of said chamber.
Claim 3
Dependent Claim
13 words
The bat of claim 1 wherein said tubular section is a plastic cylinder.
Claim 4
Dependent Claim
11 words
The bat of claim 2 wherein said weight means is sand.
Claim 5
Dependent Claim
37 words
The bat of claim 1 having a series of different sized interchangeable handles which fasten and unfasten from said tubular section to permit access to said chamber and to allow change of effective size of said bat.
Claim 6
Dependent Claim
21 words
The bat of claim 4 having a series of different sized interchangeable tubular sections which fasten and unfasten to said handles.
Claim 7
Dependent Claim
13 words
The practice bat of claim 2 wherein the bat is a baseball bat.
Claim 8
Dependent Claim
13 words
The practice bat of claim 2 wherein the bat is a softball bat.
References Cited (Backward Citations)
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US3801098A
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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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |