US3352397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for controlling the speed of movement of an object
Assignee: Demag Zug GmbH
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Filing: 1965-07-07
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Granted: 1967-11-14
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Expires: 1985-07-07
Abstract
No abstract record available.
Inventors
- 👤 Becker Klaus
- 👤 Mertens Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:52
CPC Classifications
B; B65; B65G; B65G9/00; B65G9/006; B65G13/00; B65G13/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A DEVICE FOR CONTROLLING THE SPEED OF MOVEMENT OF AN OBJECT, COMPRISING A TRACKWAY, AN OBJECT MOVABLE ALONG SAID TRACKWAY, ROLLER MEANS BETWEEN SAID OBJECT AND SAID TRACKWAY PROVIDING ROLLER MOVEMENT OF SAID OBJECT ALONG SAID TRACKWAY, SAID TRACKWAY, SAID OBJECT AND SAID ROLLER MEANS INCLUDING MAGNET MEANS ON AT LEAST ONE THEREOF AND MAGNETICALLY CONDUCTIVE PLATE MEANS ON ONE OF THE OTHERS THEREOF WHICH ARE MAINTAINED IN SPACED OUT-OF-CONTACT RELATIONSHIP DURING MOVEMENT OF SAID OBJECT ALONG SAID TRACKWAY AND WHICH DEFINE A MAGNETIC FIELD WHICH IS CUT BY THE RELATIVE MOVEMENT BETWEEN SAID MAGNET MEANS AND SAID PLATE MEANS UPON MOVEMENT OF THE OBJECT ALONG THE TRACKWAY AND A RATE WHICH IS VARIED BY THE RATE OF RELATIVE MOVEMENT BETWEEN SAID OBJECT AND SAID TRACKWAY FOR RETARDING THE ADVANCE OF SAID OBJECT ALONG SAID TRACKWAY.
Claim 2
Independent Claim
136 words
A DEVICE FOR CONTROLLING THE SPEED OF MOVEMENT OF AN OBJECT, COMPRISING A TRACKWAY, AN OBJECT MOVABLE ALONG SAID TRACKWAY, ROLLER MEANS BETWEEN SAID OBJECT AND SAID TRACKWAY PROVIDING ROLLER MOVEMENT OF SAID OBJECT ALONG SAID TRACKWAY, SAID TRACKWAY, SAID OBJECT AND SAID ROLLER MEANS INCLUDING MAGNET MEANS ON AT LEAST ONE THEREOF AND MAGNETICALLY CONDUCTIVE PLATE MEANS ON ONE OF THE OTHERS THEREOF WHICH ARE MAINTAINED IN SPACED OUT-OF-CONTACT RELATIONSHIP DURING MOVEMENT OF SAID OBJECT ALONG SAID TRACKWAY AND WHICH DEFINE A MAGNETIC FIELD WHICH IS CUT BY THE RELATIVE MOVEMENT BETWEEN SAID MAGNET MEANS AND SAID PLATE MEANS UPON MOVEMENT OF THE OBJECT ALONG THE TRACKWAY AND A RATE WHICH IS VARIED BY THE RATE OF RELATIVE MOVEMENT BETWEEN SAID OBJECT AND SAID TRACKWAY FOR RETARDING THE ADVANCE OF SAID OBJECT ALONG SAID TRACKWAY.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |