Patent US3109904A successfully refreshed from Google Patents.
US3109904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic relay
Assignee: Cutler Hammer Inc
•
Filing: 1960-08-31
•
Granted: 1963-11-05
•
Expires: 1980-08-31
Abstract
No abstract record available.
Inventors
- 👤 Nobel H Koertge
- 👤 Theodore F Rosing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:23
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/64; H01H50/641; H01H50/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN AN ELECTROMAGNETIC DEVICE, A HOUSING, MOVABLE AND STATIONARY CONTACTS IN SAID HOUSING, A MAGNET FRAME MOUNTED ON SAID HOUSING, AND ARMATURE LEVER MOVABLY MOUNTED ON SAID MAGNET FRAME, MEANS CONNECTING SAID LEVER TO SAID MOVABLE CONTACT, AND MEANS FOR ELIMINATING SAID FRAME AS A FACTOR IN COMPUTING THE WEAR ALLOWANCE FOR SAID MOVABLE CONTACT INCLUDING AN APERTURE IN SAID FRAME, AND A COIL CORE PASSING THROUGH SAID APERTURE WITH CLEARANCE WITH RESPECT TO SAID FRAME AND HAVING ITS BOTTOM END MOUNTED DIRECTLY ON AND SECURED TO SAID HOUSING.
Claim 2
Dependent Claim
89 words
IN AN ELECTROMAGNETIC DEVICE, A HOUSING, MOVABLE AND STATIONARY CONTACTS IN SAID HOUSING, A MAGNET FRAME MOUNTED ON SAID HOUSING, AND ARMATURE LEVER MOVABLY MOUNTED ON SAID MAGNET FRAME, MEANS CONNECTING SAID LEVER TO SAID MOVABLE CONTACT, AND MEANS FOR ELIMINATING SAID FRAME AS A FACTOR IN COMPUTING THE WEAR ALLOWANCE FOR SAID MOVABLE CONTACT INCLUDING AN APERTURE IN SAID FRAME, AND A COIL CORE PASSING THROUGH SAID APERTURE WITH CLEARANCE WITH RESPECT TO SAID FRAME AND HAVING ITS BOTTOM END MOUNTED DIRECTLY ON AND SECURED TO SAID HOUSING.
References Cited (Backward Citations)
US1591133A
Cited
US2735967A
Cited
US2246183A
Cited
US2321834A
Cited
US2467333A
Cited
US2547131A
Cited
US2839631A
Cited
US2892053A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |