Patent US4674744A successfully refreshed from Google Patents.
US4674744A
Expired / Lapsed
US
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Batting practice assembly
Assignee: Individual
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Filing: 1983-02-28
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Granted: 1987-06-23
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Expires: 2003-02-28
Abstract
Abstract A batting practice assembly is provided to consistently position a baseball at a desired height in a strike zone. The batting practice assembly has a swinging control mechanism with laterally opposed pivot arms which pivotally hang from a collapsible and foldable frame for compact storage and shipment as well as for enhanced structural support and stability.
Inventors
- 👤 William A. Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:37
CPC Classifications
A; A63; A63B; A63B63/00; A63B69/00; A63B69/0073; A63B69/0079; A63B69/0084
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
245 words
A batting practice assembly comprising: collapsible frame means for compact storage and transportation and for structural support, said collapsible frame means having a substantially horizontal adjustable crossbar, said collapsible frame means including a pair of adjustable telescoping lateral beams centrally connected to the ends of said crossbar, adjustable telescoping post, and pivot pins for connecting said posts to the end of said lateral beams, and hinge means for collapsibly bracing said posts to said lateral beams; ball means having a curved hitting surface; swinging control means connected to said ball means for consistently returning said ball means to a preselected height in a strike zone and for swinging said ball means in an arc from a vertical position in said strike zone to a forward position and to a rearward position in response to said ball means being hit; a pair of attachment means for securely attaching said swinging control means to said horizontal crossbar, said pair of attachment means defining a pair of pivot points and being in generally horizontal alignment with said horizontal crossbar; said swinging control means having a pair of laterally opposed pivot arms extending between said attachment means and said ball means, said pivot arms being substantially the same angle of inclination relative to a vertical axis extending through said ball means in said vertical position and said pivot arms cooperating with each other to guide each rearward swing of the ball to said preselected height in said strike zone.
Claim 2
Dependent Claim
245 words
A batting practice assembly comprising: collapsible frame means for compact storage and transportation and for structural support, said collapsible frame means having a substantially horizontal adjustable crossbar, said collapsible frame means including a pair of adjustable telescoping lateral beams centrally connected to the ends of said crossbar, adjustable telescoping post, and pivot pins for connecting said posts to the end of said lateral beams, and hinge means for collapsibly bracing said posts to said lateral beams; ball means having a curved hitting surface; swinging control means connected to said ball means for consistently returning said ball means to a preselected height in a strike zone and for swinging said ball means in an arc from a vertical position in said strike zone to a forward position and to a rearward position in response to said ball means being hit; a pair of attachment means for securely attaching said swinging control means to said horizontal crossbar, said pair of attachment means defining a pair of pivot points and being in generally horizontal alignment with said horizontal crossbar; said swinging control means having a pair of laterally opposed pivot arms extending between said attachment means and said ball means, said pivot arms being substantially the same angle of inclination relative to a vertical axis extending through said ball means in said vertical position and said pivot arms cooperating with each other to guide each rearward swing of the ball to said preselected height in said strike zone.
Claim 3
Dependent Claim
43 words
A batting practice assembly in accordance with claim 1 wherein said collapsible frame means further includes at least three legs, other pivot pins for pivotally connecting said legs to said posts, and other hinge means for collapsibly bracing said legs to said posts.
Claim 4
Dependent Claim
20 words
A batting pratice assembly in accordance with claim 1 wherein said collapsible frame means further includes adjustable netted wall means.
Claim 5
Dependent Claim
22 words
A batting practice assembly in accordance with claim 1 wherein said adjustable netted wall means includes an adjustable slanted netted front wall.
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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) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |