Patent US3157270A successfully refreshed from Google Patents.
US3157270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escort memory device
Assignee: General Precision Inc
•
Filing: 1962-11-26
•
Granted: 1964-11-17
•
Expires: 1982-11-26
Abstract
No abstract record available.
Inventors
- 👤 Prucha Martin John
- 👤 Robert A Boudrias
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:16
CPC Classifications
B; B07; B07C; B07C3/00; B07C3/003; B07C3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A MEMORY SYSTEM FOR A CONVEYOR COMPRISING A MAGNETIC BODY MOUNTED ON THE CONVEYOR ROTATABLE BETWEEN A FIRST STABLE POSITION AND A SECOND STABLE POSITION, MEANS ASSOCIATED WITH EACH PAIR OF SAID STABLE POSITIONS FOR APPLYING A FORCE TO THEIR ASSOCIATED MAGNETIC BODY TO TEND TO MAINTAIN SAID MAGNETIC BODY IN ONE OR THE OTHER OF SAID STABLE STABLE POSITIONS, MEANS POSITIONED IN SPACED RELATION TO THE CONVEYOR FOR MAGNETICALLY CO-ACTING WITH AND FOR SELECTIVELY CAUSING THE MAGNETIC BODY TO SHIFT FROM THE FIRST STABLE POSITION TO THE SECOND STABLE POSITION, AND SENSING MEANS POSITIONED IN SPACED RELATION WITH THE CONVEYOR FOR SENSING THE MAGNETIC BODY IN THE SECOND STABLE POSITION.
Claim 2
Dependent Claim
111 words
A MEMORY SYSTEM FOR A CONVEYOR COMPRISING A MAGNETIC BODY MOUNTED ON THE CONVEYOR ROTATABLE BETWEEN A FIRST STABLE POSITION AND A SECOND STABLE POSITION, MEANS ASSOCIATED WITH EACH PAIR OF SAID STABLE POSITIONS FOR APPLYING A FORCE TO THEIR ASSOCIATED MAGNETIC BODY TO TEND TO MAINTAIN SAID MAGNETIC BODY IN ONE OR THE OTHER OF SAID STABLE STABLE POSITIONS, MEANS POSITIONED IN SPACED RELATION TO THE CONVEYOR FOR MAGNETICALLY CO-ACTING WITH AND FOR SELECTIVELY CAUSING THE MAGNETIC BODY TO SHIFT FROM THE FIRST STABLE POSITION TO THE SECOND STABLE POSITION, AND SENSING MEANS POSITIONED IN SPACED RELATION WITH THE CONVEYOR FOR SENSING THE MAGNETIC BODY IN THE SECOND STABLE POSITION.
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |