US3921976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Batting practice device
Assignee: INSTITUTE FOR SOCIAL AND SCIENTIFIC DEVELOPMENT 376 EAST 400 SOUTH NO 315 SALT LAKE CITY UTAH 84111 A CORP OF UTAH
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Filing: 1974-08-07
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Granted: 1975-11-25
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Expires: 1994-08-07
Abstract
Abstract A batting aid device comprises an elongated handle and a resilient head member integrally secured to one end of the handle and which head is preferably composed of natural rubber or a synthetic elastomer having a Durometer Shore Hardness between about 55 and about 65. The device is utilized in batting practice or training by holding the handle and directing the head toward the batter while the batter swings the bat to make contact with the resilient head.
Inventors
- 👤 Charlie W Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:27
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/0002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A batting aid device for being hit by a baseball bat for batting practice comprising an elongated handle for being manually held and a resilient head member for being hit by a batting implement, both said handle and head member being solid and formed of an elastomeric material, said head member having a Durometer Shore Hardness of between 50 and 70 and said handle member having a Durometer Shore Hardness of between 70 and 90 and wherein the hardness of said handle is greater than the hardness of said head member.
Claim 2
Dependent Claim
91 words
A batting aid device for being hit by a baseball bat for batting practice comprising an elongated handle for being manually held and a resilient head member for being hit by a batting implement, both said handle and head member being solid and formed of an elastomeric material, said head member having a Durometer Shore Hardness of between 50 and 70 and said handle member having a Durometer Shore Hardness of between 70 and 90 and wherein the hardness of said handle is greater than the hardness of said head member.
Claim 3
Dependent Claim
25 words
The device of claim 1 wherein said handle is cylindrical and said head is elongated and extends outwardly from said handle along the axis thereof.
Claim 4
Dependent Claim
31 words
The device of claim 2 wherein said head member has a cavity formed in one end thereof and wherein one end of said handle is received and secured in said cavity.
Claim 5
Dependent Claim
31 words
The device of claim 1 wherein said head and handle are a synthetic rubber polymer selected from the group consisting of styrene-butadiene, polybutadiene, neoprene, butyl, polyisoprene, nitrile, ethylene-propylene and silicone rubber.
Claim 6
Dependent Claim
21 words
The device of claim 4 wherein said head has a density of between about 1.25 and about 1.35 grams/per cubic centimeter.
Claim 7
Dependent Claim
18 words
The device of claim 4 wherein said head has a Durometer Shore Hardness of between 55 and 65.
Claim 8
Dependent Claim
18 words
The device of claim 6 wherein said handle has a Durometer Shore Hardness of between 80 and 90.
References Cited (Backward Citations)
US3643961A
Cited
US3652088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |