US3099728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical multipole control relays
Assignee: Ward Leonard Electric Co
•
Filing: 1958-06-11
•
Granted: 1963-07-30
•
Expires: 1978-06-11
Abstract
No abstract record available.
Inventors
- 👤 Jr John Scheib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:54
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/546
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
AN ELECTRICAL MULTIPOLE CONTACT RELAY COMPRISING AN ELECTROMAGNET HAVING AN E-SHAPED CORE WITH TWO END LEGS AND A CENTER LEG, A COIL ON THE CENTER LEG, AN ARMATURE SPANNING THE OPEN END OF SAID LEGS FOR ACTUATING A PLURALITY OF CONTACTS, A FLAT STEEL PLATE HAVING A GENERALLY RECTANGULAR SHAPE, TWO BRACKETS EACH HAVING A PANEL EXTENDING NORMAL TO SAID PLATE, PEDESTALS ON EACH BRACKET FORMED AS A SINGLE PIECE THEREWITH AND HAVING SUPPORTING SURFACE NORMAL TO SAID PANELS FOR RECEIVING THE E-SHAPED CORE FOR SPACING SAID ELECTROMAGNET FROM SAID PLATE, SAID BRACKETS HAVING SECOND SURFACES FACING ONE ANOTHER IN SPACED RELATION WITH SAID SUPPORTING SURFACES THEREBETWEEN, FASTENING MEANS EXTENDING THROUGH A RESPECTIVE END LEG AND A RESPECTIVE PEDESTAL TO THREAD INTO SAID PLATE FOR SECURING SAID CORE AND BRACKETS TO SAID PLATE.
Claim 2
Dependent Claim
133 words
AN ELECTRICAL MULTIPOLE CONTACT RELAY COMPRISING AN ELECTROMAGNET HAVING AN E-SHAPED CORE WITH TWO END LEGS AND A CENTER LEG, A COIL ON THE CENTER LEG, AN ARMATURE SPANNING THE OPEN END OF SAID LEGS FOR ACTUATING A PLURALITY OF CONTACTS, A FLAT STEEL PLATE HAVING A GENERALLY RECTANGULAR SHAPE, TWO BRACKETS EACH HAVING A PANEL EXTENDING NORMAL TO SAID PLATE, PEDESTALS ON EACH BRACKET FORMED AS A SINGLE PIECE THEREWITH AND HAVING SUPPORTING SURFACE NORMAL TO SAID PANELS FOR RECEIVING THE E-SHAPED CORE FOR SPACING SAID ELECTROMAGNET FROM SAID PLATE, SAID BRACKETS HAVING SECOND SURFACES FACING ONE ANOTHER IN SPACED RELATION WITH SAID SUPPORTING SURFACES THEREBETWEEN, FASTENING MEANS EXTENDING THROUGH A RESPECTIVE END LEG AND A RESPECTIVE PEDESTAL TO THREAD INTO SAID PLATE FOR SECURING SAID CORE AND BRACKETS TO SAID PLATE.
References Cited (Backward Citations)
US1853964A
Cited
US2059702A
Cited
US2064632A
Cited
US2276698A
Cited
US2616010A
Cited
US2874245A
Cited
US2758169A
Cited
US2811617A
Cited
US2921166A
Cited
US2879359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |