US3210837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of effecting pre-stress
Assignee: ABB Norden Holding AB
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Filing: 1963-12-02
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Granted: 1965-10-12
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Expires: 1983-12-02
Abstract
No abstract record available.
Inventors
- 👤 Hassellof Ake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:25
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/04; B30B15/042; B21; B21B; B21B31/00; B21B31/02; B21B31/028; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49758; Y10T29/49826; Y10T29/49863; Y10T29/49908; Y10T29/49925; Y10T29/49927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
METHOD OF EFFECTING A DESIRED DEGREE OF PRE-STRESS IN A CONSTRUCTION COMPRISING A PLURALITY OF PILLARS SEPARATING A PAIR OF YOKES AT OPPOSITE ENDS OF A SURROUNDING STRIP CASING, SAID METHOD INCLUDING THE STEPS OF APPLYING EQUAL FORCES IN OPPOSITE DIRECTIONS TO SAID YOKES TO STRETCH SAID CASING AND GIVE IT A STRESS AT LEAST EQUAL TO THE DESIDERED PRE-STRESS, THEREBY PROVIDING CLEARANCES BETWEEN SAID YOKES AND THE END OF SAID PILLARS, THEN INSERTING FILLERS TO SUBSTANTIALLY FILL EACH OF SAID CLEARANCES AND REMOVING SAID FORCES, SAID FILLERS THEREBY RETAINING THE CONSTRUCTION IS EXTENDED PRE-STRESSED CONDITION.
Claim 2
Dependent Claim
96 words
METHOD OF EFFECTING A DESIRED DEGREE OF PRE-STRESS IN A CONSTRUCTION COMPRISING A PLURALITY OF PILLARS SEPARATING A PAIR OF YOKES AT OPPOSITE ENDS OF A SURROUNDING STRIP CASING, SAID METHOD INCLUDING THE STEPS OF APPLYING EQUAL FORCES IN OPPOSITE DIRECTIONS TO SAID YOKES TO STRETCH SAID CASING AND GIVE IT A STRESS AT LEAST EQUAL TO THE DESIDERED PRE-STRESS, THEREBY PROVIDING CLEARANCES BETWEEN SAID YOKES AND THE END OF SAID PILLARS, THEN INSERTING FILLERS TO SUBSTANTIALLY FILL EACH OF SAID CLEARANCES AND REMOVING SAID FORCES, SAID FILLERS THEREBY RETAINING THE CONSTRUCTION IS EXTENDED PRE-STRESSED CONDITION.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |