US4065126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Practice tennis ball and apparatus
Assignee: Individual
•
Filing: 1975-06-30
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Granted: 1977-12-27
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Expires: 1995-06-30
Abstract
Abstract A practice tennis ball and apparatus including a soft spherical member comprising a sewn cotton jacket enclosing a soft, cotton thread waste interior. A knit cover overfits the sewn jacket and may receive a marking powder suitable to removably indicate a contact upon a surface when the ball is in play. The knit cover removably overfits the sewn jacket to facilitate insertion of additional applications of marking powder. The apparatus includes targets in form suitable for application upon a vertical surface to receive the soft, pliable ball as it is propelled by a tennis racket.
Inventors
- 👤 David Mantz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:38
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/38; A63B37/00; A63B37/12; A63B2037/125; A63B43/00; A63B2043/001
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A practice playing ball comprising: a soft inner core of pliable material; an inner fabric cover surrounding and enclosing said inner core, said inner fabric cover being cut and sewn to enclose said inner core in a substantially spherical form; a soft knitted fabric outer cover for enclosing said inner cover; said soft knitted fabric outer cover having an opening through which said inner core and inner cover can be readily inserted and removed; elastic means for securing said outer cover around said inner cover; and powdered chalk impregnated in said knitted fabric outer cover. for indicating a contact point of said ball on a surface rebounded thereagainst.
Claim 2
Dependent Claim
108 words
A practice playing ball comprising: a soft inner core of pliable material; an inner fabric cover surrounding and enclosing said inner core, said inner fabric cover being cut and sewn to enclose said inner core in a substantially spherical form; a soft knitted fabric outer cover for enclosing said inner cover; said soft knitted fabric outer cover having an opening through which said inner core and inner cover can be readily inserted and removed; elastic means for securing said outer cover around said inner cover; and powdered chalk impregnated in said knitted fabric outer cover. for indicating a contact point of said ball on a surface rebounded thereagainst.
Claim 3
Dependent Claim
30 words
A practice playing ball in accordance with claim 1 wherein said pliable material is fabricated of materials selected from the group consisting of cellular material, cotton waste and plastic foam.
Claim 4
Dependent Claim
115 words
In a game apparatus, the combination comprising A. a practice ball, 1. said ball comprising: a soft inner core of pliable material; an inner fabric cover surrounding and enclosing said inner core, said inner fabric cover being cut and sewn to enclose said inner core in a substantially spherical form; a soft knitted fabric outer cover for enclosing said inner cover; said soft knitted fabric outer cover having an opening through which said inner core and inner cover can be readily inserted and removed; elastic means for securing said outer cover around said inner cover; powdered chalk impregnated in said knitted fabric outer cover; and B. a target positioned to be contacted by the ball,
Claim 5
Dependent Claim
115 words
In a game apparatus, the combination comprising A. a practice ball, 1. said ball comprising: a soft inner core of pliable material; an inner fabric cover surrounding and enclosing said inner core, said inner fabric cover being cut and sewn to enclose said inner core in a substantially spherical form; a soft knitted fabric outer cover for enclosing said inner cover; said soft knitted fabric outer cover having an opening through which said inner core and inner cover can be readily inserted and removed; elastic means for securing said outer cover around said inner cover; powdered chalk impregnated in said knitted fabric outer cover; and B. a target positioned to be contacted by the ball,
Claim 6
Dependent Claim
30 words
said target including a horizontal line, whereby said powdered chalk is adapted to leave a mark on said target at the point of impact of said ball with said target.
Claim 7
Dependent Claim
30 words
said target including a horizontal line, whereby said powdered chalk is adapted to leave a mark on said target at the point of impact of said ball with said target.
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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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |