US3110552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an inflatable structure
Assignee: Individual
•
Filing: 1959-09-23
•
Granted: 1963-11-12
•
Expires: 1979-09-23
Abstract
No abstract record available.
Inventors
- 👤 Walter D Voelker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:17
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/02; B29C44/12; B29C44/1228; B29C44/1242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
THE METHOD OF PREPARING A STRUCTURE HAVING SANDWICH WALLS WHICH INCLUDES THE STEPS OF: PREPARING AN INFLATABLE INNER ENVELOPE, SAID INNER ENVELOPE BEING SPACED FROM AN OUTER WALL BY A PLURALITY OF WEBS, SAID INNER ENVELOPE, WEBS AND OUTER WALL FORMING A PLURALITY OF SEPARATE COMPARTMENTS; PLACING IN EACH OF SAID PLURALITY OF COMPARTMENTS THE EXACT AMOUNT OF CHILLED, FOAMFORMING CHEMICALS ADAPTED TO REACT TO FORM RIGID POLYURETHANE FOAM EXACTLY FILLING SAID COMPARTMENTS WHEN EXPANDED; INFLATING THE INNER ENVELOPE; HEATING THE CHILLED CHEMICALS SUBSEQUENT TO SUCH INFLATION OF THE INNER ENVELOPE TO DEVELOP THE EXACT AMOUNT OF RIGID POLYURETHANE FOAM IN EACH OF SAID COMPARTMENTS TO PROVIDE A SAND-
Claim 2
Independent Claim
109 words
THE METHOD OF PREPARING A STRUCTURE HAVING SANDWICH WALLS WHICH INCLUDES THE STEPS OF: PREPARING AN INFLATABLE INNER ENVELOPE, SAID INNER ENVELOPE BEING SPACED FROM AN OUTER WALL BY A PLURALITY OF WEBS, SAID INNER ENVELOPE, WEBS AND OUTER WALL FORMING A PLURALITY OF SEPARATE COMPARTMENTS; PLACING IN EACH OF SAID PLURALITY OF COMPARTMENTS THE EXACT AMOUNT OF CHILLED, FOAMFORMING CHEMICALS ADAPTED TO REACT TO FORM RIGID POLYURETHANE FOAM EXACTLY FILLING SAID COMPARTMENTS WHEN EXPANDED; INFLATING THE INNER ENVELOPE; HEATING THE CHILLED CHEMICALS SUBSEQUENT TO SUCH INFLATION OF THE INNER ENVELOPE TO DEVELOP THE EXACT AMOUNT OF RIGID POLYURETHANE FOAM IN EACH OF SAID COMPARTMENTS TO PROVIDE A SAND-
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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) | 1966-11-11 | 1967-05-13 | 1967-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-11 | 1971-05-13 | 1971-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-11 | 1975-05-13 | 1975-11-12 | $7700.00 | Window Closed / Lapsed |