US3606021A
Expired / Lapsed
US
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Materials handling apparatus
Assignee: AMF Inc
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Filing: 1969-06-10
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Granted: 1971-09-20
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Expires: 1989-06-10
Abstract
Abstract THIS INVENTION IS FOR MATERIALS HANDLING APPARTUS WHEREIN AN ARTICLE SUPPORTING TRAY IS ADAPTED TO MOVE UPWARDLY AND UPWARDLY WITH RESPECT TO THE BASE IN RESPONSE TO WEIGHT OF THE ARTICLE ON THE TRAY ON A CALIBRATED COMPRESSION SPRING. THE TRAY IS PREVENTED FROM TILTING OR ROTTING IN ONE OR MORE DIRECTIONS BY THE PROVISION OF A GUIDING MEMBER, GUIDING CHANNEL AND GUIDING MEANS.
Inventors
- 👤 Hans Roels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:15
CPC Classifications
B; B65; B65G; B65G1/00; B65G1/02; B65G1/04; B65G1/06; B65G1/07
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) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |