Patent US3182159A successfully refreshed from Google Patents.
US3182159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contact spring group for relays, change-over switches and the like
Assignee: Individual
•
Filing: 1961-04-17
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Granted: 1965-05-04
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Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 Per Harry Elias Claesson
- 👤 Karl Evert Jarnbrink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:54
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/54; H01H50/56; H01H1/00; H01H1/12; H01H1/14; H01H1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
IN A CONTACT SPRING GROUP FOR RELAYS, CHANGEOVER SWITCHES AND THE LIKE, A NUMBER OF MOVABLE CONTACT SPRINGS OF THE LEAF SPRING TYPE AND A NUMBER OF FIXED CONTACT SPRINGS OF THE LEAF SPRING TYPE, EACH OF SAID FIXED CONTACT SPRINGS HAVING A SOLID REAR PORTION AND A SHANKED FRONT PORTION, THE REAR PART OF SAID REAR PORTION BEING FASTENED IN A SUPPORTING BRACKET, THE FRONT PART OF SAID REAR PORTION BEING FREELY MOVABLE IN A PLANE PERPENDICULAR TO THE PLANE OF THE SPRING, EACH SHANK OIF SAID SHANKED PORTION HAVING A MEAN STIFFNESS FOR BENDING IN SAID PLANE WHICH IS CONIDERABLY LOWER THAN HALF THE MEAN STIFFNESS OF SAID FRONT PART OF SAID REAR PORTION, EACH OF THE SHANKS OF SAID SHANKED PORTION HAVING A CONTACT SURFACE AT ITS FREE END, SAID CONTACT SURFACE BEING LOCATED OPPOSITE TO A CORRESPONDING CONTACT SURFACE OF A MOVABLE SPRING, AND MEANS FOR SUPPORTING EACH SHANK OF SAID SHANKED PORTION CLOSE TO THE CONTACT SURFACE OF SUCH SHANK.
Claim 2
Dependent Claim
165 words
IN A CONTACT SPRING GROUP FOR RELAYS, CHANGEOVER SWITCHES AND THE LIKE, A NUMBER OF MOVABLE CONTACT SPRINGS OF THE LEAF SPRING TYPE AND A NUMBER OF FIXED CONTACT SPRINGS OF THE LEAF SPRING TYPE, EACH OF SAID FIXED CONTACT SPRINGS HAVING A SOLID REAR PORTION AND A SHANKED FRONT PORTION, THE REAR PART OF SAID REAR PORTION BEING FASTENED IN A SUPPORTING BRACKET, THE FRONT PART OF SAID REAR PORTION BEING FREELY MOVABLE IN A PLANE PERPENDICULAR TO THE PLANE OF THE SPRING, EACH SHANK OIF SAID SHANKED PORTION HAVING A MEAN STIFFNESS FOR BENDING IN SAID PLANE WHICH IS CONIDERABLY LOWER THAN HALF THE MEAN STIFFNESS OF SAID FRONT PART OF SAID REAR PORTION, EACH OF THE SHANKS OF SAID SHANKED PORTION HAVING A CONTACT SURFACE AT ITS FREE END, SAID CONTACT SURFACE BEING LOCATED OPPOSITE TO A CORRESPONDING CONTACT SURFACE OF A MOVABLE SPRING, AND MEANS FOR SUPPORTING EACH SHANK OF SAID SHANKED PORTION CLOSE TO THE CONTACT SURFACE OF SUCH SHANK.
References Cited (Backward Citations)
US2178151A
Cited
US2282687A
Cited
FR892479A
Cited
US2612367A
Cited
BE520811A
Cited
FR1150259A
Cited
GB846488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |