Patent US3376684A successfully refreshed from Google Patents.
US3376684A
Expired / Lapsed
US
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Double reverse corrugated material
Assignee: General Dynamics Corp
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Filing: 1963-10-16
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Granted: 1968-04-09
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Expires: 1983-10-16
Abstract
No abstract record available.
Inventors
- 👤 Donald W Cole
- 👤 Richard K May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:17
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/3405; E04C2002/3444; E04C2002/3455; E04C2002/3466; E04C2002/3472; E04C2002/3494; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24174
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN OPEN RETICULATED STRUCTURAL MATERIAL COMPRISING: A. A PLURALITY OF UPPER NODES EACH HAVING AN APEX OF FINITE WIDTH LYING IN AND AND DEFINING A DISCONTINUOUS PLANAR SURFACE; B. A PLURALITY OF LOWER NODES OF TROUGHLIKE CONFIGURATION EACH HAVING A BOTTOM PORTION OF FINITE WIDTH DEFINING A DISCONTINUOUS LOWER PLANAR SURFACE; SAID UPPER AND LOWER PLANAR SURFACES SPACED FROM AND LYING ON EACH SIDE OF A MEDIAN PLANE AND JOINED BY TRUSS-LIKE MEMBERS; C. EACH SAID TRUSS-LIKE MEMBER EXTENDING SUBSTANTIALLY LINEARLY FROM AN UPPER NODE TO THE LOWER NODE NEXT ADJACENT THERETO, (1) SAID TRUSS-LIKE MEMBERS BEING JOINED AT THEIR MIDPORTION TO TORSIONAL MEANS LYING ALONG A MEDIAN PLANE, SAID MEANS ESTABLISHING TORSIONAL AXES ALONG SAID MEDIAN PLANE OPERATIVE TO PERMIT UNIVERSAL DEFLECTION OF SAID STRUCTURAL MATERIAL WITHOUT PERMANENT DEFORMATION, (2) SAID NODES RESPECTIVELY LYING IN THE SAME PLANE AND BEING STAGGERED FROM ONE ANOTHER.
Claim 2
Dependent Claim
145 words
AN OPEN RETICULATED STRUCTURAL MATERIAL COMPRISING: A. A PLURALITY OF UPPER NODES EACH HAVING AN APEX OF FINITE WIDTH LYING IN AND AND DEFINING A DISCONTINUOUS PLANAR SURFACE; B. A PLURALITY OF LOWER NODES OF TROUGHLIKE CONFIGURATION EACH HAVING A BOTTOM PORTION OF FINITE WIDTH DEFINING A DISCONTINUOUS LOWER PLANAR SURFACE; SAID UPPER AND LOWER PLANAR SURFACES SPACED FROM AND LYING ON EACH SIDE OF A MEDIAN PLANE AND JOINED BY TRUSS-LIKE MEMBERS; C. EACH SAID TRUSS-LIKE MEMBER EXTENDING SUBSTANTIALLY LINEARLY FROM AN UPPER NODE TO THE LOWER NODE NEXT ADJACENT THERETO, (1) SAID TRUSS-LIKE MEMBERS BEING JOINED AT THEIR MIDPORTION TO TORSIONAL MEANS LYING ALONG A MEDIAN PLANE, SAID MEANS ESTABLISHING TORSIONAL AXES ALONG SAID MEDIAN PLANE OPERATIVE TO PERMIT UNIVERSAL DEFLECTION OF SAID STRUCTURAL MATERIAL WITHOUT PERMANENT DEFORMATION, (2) SAID NODES RESPECTIVELY LYING IN THE SAME PLANE AND BEING STAGGERED FROM ONE ANOTHER.
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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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |