US3585698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a telescopic tube
Assignee: US Philips Corp
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Filing: 1969-06-04
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Granted: 1971-06-22
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Expires: 1989-06-04
Abstract
Abstract A METHOD OF MANUFACTURING A TELESCOPIC TUBE FOR PARTICULAR USE AS A TELESCOPIC AERIAL, HAVING INTERMEDIATE SPRINGS AT ITS LOWER END WHICH ESTABLISH A RESILIENT ENGAGEMENT AND ELECTRICAL CONTACT BETWEEN THE SEGMENTS OF THE TUBE COMPRISING THE STEPS OF WIDENING ONE END OF THE TUBE, FORMING AN ANNULAR GROOVE AT THE TRANSITION BETWEEN THE WIDENED AND UNWIDENED PORTIONS OF THE TUBE IN THE DIRECTION TOWARD THE WIDENED END AND FINALLY FORCING THE WIDENED PORTION INSIDE OUT OVER THE UNWIDENED TUBE FROM THE ANNULAR GROOVE ONWARDS. SLOTS MAY FINALLY BE FORMED IN THE TURNED UP PORTION.
Inventors
- 👤 Wilhelm Kamper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:46
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; B; B21; B21D; B21D39/00; B21D39/04; B21D41/00; H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016; Y10T29/49616
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |