US3240217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structural assembly
Assignee: Birdair Structures Inc
•
Filing: 1963-11-08
•
Granted: 1966-03-15
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Walter W Bird
- 👤 George F Reitmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:36
CPC Classifications
E; E04; E04H; E04H15/00; E04H15/20; E04H15/22; Y; Y10; Y10S; Y10S135/00; Y10S135/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A BEAM STRUCTURE FOR USE IN COMBINATION WITH A TENSIONED, FLEXIBLE SKIN TO IMPART STRUCTURAL RIGIDITY TO THE SKIN IN THE DIRECTION OF THE PLANE CONTAINING SAID BEAM AND TO DERIVE LATERAL STABILITY FROM SAID SKIN, SAID BEAM COMPRISING A RELATIVELY STIFF COMPRESSION MEMBER, A FLEXIBLE TENSION MEMBER AND FLEXIBLE WEB MEANS JOINING THE COMPRESSION AND TENSION MEMBERS, SAID COMPRESSION MEMBER BEING HELD IN DEFORMED CONDITION BY SAID TENSION MEMBER TO IMPART TENSION TO SAID WEB MEANS AND SAID TENSION MEMBER, SAID COMPRESSION MEMBER INCLUDING A PAIR OF SIMILAR ELEMENTS JOINED IN BACK-TO-BACK RELATION TO PRESENT OPPOSITELY DIRECTED, LATERALLY PROJECTING FLANGES, PORTIONS OF SAID WEB MEANS BEING IN THE FORM OF A SIMILAR ELEMENTS, SAID WEB MEANS BEING IN THE FORM OF A STRIP OF FABRIC-LIKE MATERIAL BEADED ALONG ONE EDGE FOR CAPTIVITY BETWEEN SAID SIMILAR ELEMENTS OF THE COMPRESSION MEMBER, SAID MATERIAL BEING ARRANGED ON A BIAS BETWEEN THE COMPRESSION AND TENSION MEMBERS.
Claim 2
Dependent Claim
154 words
A BEAM STRUCTURE FOR USE IN COMBINATION WITH A TENSIONED, FLEXIBLE SKIN TO IMPART STRUCTURAL RIGIDITY TO THE SKIN IN THE DIRECTION OF THE PLANE CONTAINING SAID BEAM AND TO DERIVE LATERAL STABILITY FROM SAID SKIN, SAID BEAM COMPRISING A RELATIVELY STIFF COMPRESSION MEMBER, A FLEXIBLE TENSION MEMBER AND FLEXIBLE WEB MEANS JOINING THE COMPRESSION AND TENSION MEMBERS, SAID COMPRESSION MEMBER BEING HELD IN DEFORMED CONDITION BY SAID TENSION MEMBER TO IMPART TENSION TO SAID WEB MEANS AND SAID TENSION MEMBER, SAID COMPRESSION MEMBER INCLUDING A PAIR OF SIMILAR ELEMENTS JOINED IN BACK-TO-BACK RELATION TO PRESENT OPPOSITELY DIRECTED, LATERALLY PROJECTING FLANGES, PORTIONS OF SAID WEB MEANS BEING IN THE FORM OF A SIMILAR ELEMENTS, SAID WEB MEANS BEING IN THE FORM OF A STRIP OF FABRIC-LIKE MATERIAL BEADED ALONG ONE EDGE FOR CAPTIVITY BETWEEN SAID SIMILAR ELEMENTS OF THE COMPRESSION MEMBER, SAID MATERIAL BEING ARRANGED ON A BIAS BETWEEN THE COMPRESSION AND TENSION MEMBERS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |