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Patent US3619951A successfully refreshed from Google Patents.
US3619951A
Expired / Lapsed
US
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Automatic loading and unloading device for machine tool of the type having an extensible arm
Assignee: Toyoda Koki KK
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Filing: 1970-04-24
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Granted: 1971-11-16
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Expires: 1990-04-24
Abstract
Abstract IN A SINGLE-ARM TYPE AUTOMATIC LOADING AND UNLOADING DEVICE, WHEREIN AN UNOPERATED WORKPIECE IS CARRIED INTO AN OPERATING POSITION FROM A LOADING CHUTE BY A LOADING ARM AND AN OPERATED WORKPIECE IS MOVED OUT OF THE OPERATING POSITION TO A DISHCARGE CHUTE, THE IMPROVEMENT WHEREIN THE DEVICE ADOPTS AN EXTENSIBLE ARM TO SWING, AS BEING SHORTENDED OR EXTENDED, FROM A PICKUP POSITION TO THE OPERATING POSITION AND FROM THE OPERATING POSITION TO AN UNLOADING POSITION SO THAT UNPRODUCTIVE TIME IS REDUCED TO A MINIMUM.
Inventors
- 👤 Makoto Kikuchi
- 👤 Toyoaki Saeki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:00
CPC Classifications
B; B24; B24B; B24B5/00; B24B5/35; B24B5/355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |