US3128753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the automatic throwing of balls for training for certain sports
Assignee: Individual
•
Filing: 1961-12-27
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Granted: 1964-04-14
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Expires: 1981-12-27
Abstract
No abstract record available.
Inventors
- 👤 Politzer Eugene Jim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:55
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/40; A63B69/407
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A DEVICE FOR AUTOMATICALLY THROWING BALLS COMPRISING A THROWING TUBE, A CYLINDER SUPPORTING SAID THROWING TUBE IN COAXIAL RELATIONSHIP, A SLIDABLE PISTON WITHIN SAID CYLINDER, A COIL COMPRESSION SPRING WITHIN SAID CYLINDER ACTING TO FORCE SAID PISTON TOWARD SAID THROWING TUBE, A MAGAZINE EXTENDING OUTWARDLY AWAY FROM THE AXIS OF SAID CYLINDER AND CONNECTED TO SAID CYLINDER ADJACENT THE REAR PORTION OF SAID THROWING TUBE, AN AXIALLY DIRECTED SLOT IN SAID CYLINDER ADJACENT SAID PISTON, A FINGER PORTION INTEGRAL WITH SAID PISTON PROJECTING THROUGH SAID SLOT, A CAM FOLLOWER INTEGRAL WITH SAID FINGER PORTION EXTERIOR TO SAID
Claim 2
Independent Claim
97 words
A DEVICE FOR AUTOMATICALLY THROWING BALLS COMPRISING A THROWING TUBE, A CYLINDER SUPPORTING SAID THROWING TUBE IN COAXIAL RELATIONSHIP, A SLIDABLE PISTON WITHIN SAID CYLINDER, A COIL COMPRESSION SPRING WITHIN SAID CYLINDER ACTING TO FORCE SAID PISTON TOWARD SAID THROWING TUBE, A MAGAZINE EXTENDING OUTWARDLY AWAY FROM THE AXIS OF SAID CYLINDER AND CONNECTED TO SAID CYLINDER ADJACENT THE REAR PORTION OF SAID THROWING TUBE, AN AXIALLY DIRECTED SLOT IN SAID CYLINDER ADJACENT SAID PISTON, A FINGER PORTION INTEGRAL WITH SAID PISTON PROJECTING THROUGH SAID SLOT, A CAM FOLLOWER INTEGRAL WITH SAID FINGER PORTION EXTERIOR TO SAID
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |