Patent US3191287A successfully refreshed from Google Patents.
US3191287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making darge diameter accordion type expansion joints
Assignee: Pittsburgh Des Moines Steel Co
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Filing: 1962-06-01
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Granted: 1965-06-29
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Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 George W Hall
- 👤 Jr George C Harper
- 👤 Frederick W Songer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:15
CPC Classifications
F; F16; F16L; F16L51/00; F16L51/02; F16L51/025; F16L51/029; B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/20; B21C37/205; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF MAKING A LARGE DIAMETER ACCORDION TYPE EXPANSION JOINT FROM FLAT RECTANGULAR STEEL PLATES THAT INCLUDES THE FOLLOWING STEPS; BENDING THE PLATES ABOUT THEIR LONGITUDINAL AXES TO FORM LOBE MEMBERS HAVING A GENERALLY U-SHAPED CROSS SECTION WITH OUTWARDLY CURVED EDGE PORTIONS EXTENDING IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE SIDES OF THE LOBE MEMBERS, FORMING LOBE MEMBERS INTO COMPLETE CIRCULAR ARC AND WELDING THE ABUTTING ENDS OF THOSE ARCS TO FORM CIRCULAR RINGS WITH THE SIDES OF EACH U-SHAPED LOBE MEMBER EXTENDING PARALLEL TO THE GENERAL PLANE OF THE RING AND WITH ITS OUTWARDLY CURVED EDGE PORTIONS FORMING THE OUTER PERIPHERY OF THE RING AND EXTENDING IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE GENERALLY PLANE OF THE RING, TIMMING THE EDGE PORTIONS OF EACH RING COAXIALLY WITHIN THE OUTWARDLY ASSEMBLING TWO OR MORE RINGS COAXIALLY WITH THE OUTWARDLY CURVED EDGES OF ADJACENT RINGS IN AXIALLY ABUTTING RELATIONSHIP, AND WELDING TOGETHER THESE ABUTTING EDGE TO FORM A CYLINDER WITH ACCORDION FOLDS IN ITS SIDE.
Claim 2
Independent Claim
165 words
THE METHOD OF MAKING A LARGE DIAMETER ACCORDION TYPE EXPANSION JOINT FROM FLAT RECTANGULAR STEEL PLATES THAT INCLUDES THE FOLLOWING STEPS; BENDING THE PLATES ABOUT THEIR LONGITUDINAL AXES TO FORM LOBE MEMBERS HAVING A GENERALLY U-SHAPED CROSS SECTION WITH OUTWARDLY CURVED EDGE PORTIONS EXTENDING IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE SIDES OF THE LOBE MEMBERS, FORMING LOBE MEMBERS INTO COMPLETE CIRCULAR ARC AND WELDING THE ABUTTING ENDS OF THOSE ARCS TO FORM CIRCULAR RINGS WITH THE SIDES OF EACH U-SHAPED LOBE MEMBER EXTENDING PARALLEL TO THE GENERAL PLANE OF THE RING AND WITH ITS OUTWARDLY CURVED EDGE PORTIONS FORMING THE OUTER PERIPHERY OF THE RING AND EXTENDING IN A DIRECTION SUBSTANTIALLY PERPENDICULAR TO THE GENERALLY PLANE OF THE RING, TIMMING THE EDGE PORTIONS OF EACH RING COAXIALLY WITHIN THE OUTWARDLY ASSEMBLING TWO OR MORE RINGS COAXIALLY WITH THE OUTWARDLY CURVED EDGES OF ADJACENT RINGS IN AXIALLY ABUTTING RELATIONSHIP, AND WELDING TOGETHER THESE ABUTTING EDGE TO FORM A CYLINDER WITH ACCORDION FOLDS IN ITS SIDE.
References Cited (Backward Citations)
US2685305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |