Patent US3019196A successfully refreshed from Google Patents.
Patent US3623724A successfully refreshed from Google Patents.
US3623724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bat balancer
Assignee: Individual
•
Filing: 1970-02-09
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Granted: 1971-11-30
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Expires: 1990-02-09
Abstract
Abstract A bat balancer comprising a frustoconically shaped weight sleeve member which is adapted to be slid onto a baseball bat from the knob end thereof. The bat balancer adds weight to a bat but maintains the balance of the bat by adding an equal amount of weight above and below the balance point of the bat.
Inventors
- 👤 Leon A Lande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:19
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/06; A63B60/14; A63B59/00; A63B59/50; A63B60/02; A63B60/04; A63B60/52; A63B59/58; A63B2059/581; A63B2102/00; A63B2102/18; A63B69/00; A63B69/0002; A63B69/36; A63B69/3623; A63B69/3632; A63B69/3638
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
In a training device used in combination with a ball bat, the improvement comprising: a. a sleeve member having an inner bore through which a ball bat may be frictionally engaged and having a center of gravity located along the center axis thereof, b. said inner bore having a nonadjustable diameter along its length, c. said diameter being related to the increasing diameter of the bat so as to seat the sleeve member at a location along said bat whereby the center of gravity of the sleeve member is disposed at substantially the same location as the center of gravity of the bat so that the bat remains balanced around its center of gravity and the natural swing of the bat wilL be substantially unchanged.
Claim 2
Dependent Claim
125 words
In a training device used in combination with a ball bat, the improvement comprising: a. a sleeve member having an inner bore through which a ball bat may be frictionally engaged and having a center of gravity located along the center axis thereof, b. said inner bore having a nonadjustable diameter along its length, c. said diameter being related to the increasing diameter of the bat so as to seat the sleeve member at a location along said bat whereby the center of gravity of the sleeve member is disposed at substantially the same location as the center of gravity of the bat so that the bat remains balanced around its center of gravity and the natural swing of the bat wilL be substantially unchanged.
Claim 3
Dependent Claim
16 words
In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped.
Claim 4
Dependent Claim
24 words
In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and has a frustoconically shaped bore formed therethrough.
Claim 5
Dependent Claim
25 words
In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and has a constant wall thickness throughout its length.
Claim 6
Dependent Claim
31 words
In a training device as defined in claim 1 wherein said sleeve member is made from a flexible material and is held in place by a friction grip on the bat.
Claim 7
Dependent Claim
46 words
In a training device as defined in claim 1 wherein said sleeve member is made from a flexible material and is provided with at least one longitudinally extended slit which extends through the wall thereof, from the smaller end thereof and toward the larger end thereof.
Claim 8
Dependent Claim
32 words
In a training device as defined in claim 1 wherein said sleeve member is frustoconically shaped and is composed of a flexible material selected from the group consisting of rubber and plastic.
Claim 9
Dependent Claim
17 words
In a training device as defined in claim 7 wherein said flexible material is composed of rubber.
Claim 10
Dependent Claim
34 words
In a training device as defined in claim 1 wherein said sleeve member is elongated and has a distributed weight equally divided on each side of the natural balance point of the unweighted bat.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |