US3203845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a reinforced hollow element
Assignee: Justin Enterprises Inc
•
Filing: 1963-04-03
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Granted: 1965-08-31
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Expires: 1983-04-03
Abstract
No abstract record available.
Inventors
- 👤 Robert J Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:32
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/16; B; B21; B21F; B21F17/00; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/583; B29C53/585; B29C53/60; B29C53/602; B29C53/78; B65; B65H; B65H54/00; B65H54/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF FORMING A HOLLOW ELEMENT COMPRISING THE STEPS OF: (A) WINDING A FILAMENT IN A HELICAL PATTERN ABOUT A FORM TO PRODUCE A HOLLOW UNIT HAVING AT LEAST ONE ENLARGED END PORTION, AND (B) THEREAFTER WINDING SAID FILAMENT IN A HELICAL PATTERN TO PRODUCE A SECOND HOLLOW UNIT AXIALLY ALIGNED WITH SAID FIRST UNIT, SAID LAST NAMED HELICAL PATTERN OVERLAPPING SAID ENLARGED PORTION OF SAID FIRST HOLLOW UNIT, THEREBY PRODUCING AN INTERLOCK BETWEEN SAID FIRST AND SECOND UNIT.
Claim 2
Independent Claim
80 words
A METHOD OF FORMING A HOLLOW ELEMENT COMPRISING THE STEPS OF: (A) WINDING A FILAMENT IN A HELICAL PATTERN ABOUT A FORM TO PRODUCE A HOLLOW UNIT HAVING AT LEAST ONE ENLARGED END PORTION, AND (B) THEREAFTER WINDING SAID FILAMENT IN A HELICAL PATTERN TO PRODUCE A SECOND HOLLOW UNIT AXIALLY ALIGNED WITH SAID FIRST UNIT, SAID LAST NAMED HELICAL PATTERN OVERLAPPING SAID ENLARGED PORTION OF SAID FIRST HOLLOW UNIT, THEREBY PRODUCING AN INTERLOCK BETWEEN SAID FIRST AND SECOND UNIT.
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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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |