Patent US3361377A successfully refreshed from Google Patents.
US3361377A
Expired / Lapsed
US
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Extendible-retractable boom
Assignee: Melpar Inc
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Filing: 1965-12-30
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Granted: 1968-01-02
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Expires: 1985-12-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward C Trexler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:04
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/005; F; F16; F16H; F16H19/00; F16H19/02; F16H19/06; F16H19/064; H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1235; Y; Y10; Y10S; Y10S242/00; Y10S242/917; Y10S242/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
AN EXTENDIBLE-COLLAPSIBLE BOOM SYSTEM, COMPRISING A STRIP OF RESILIENT MATERIAL WHICH HAS BEEN PRESTRESSED TO FORM A LONGITUDINAL TUBE OF PREDETERMINED DIAMETER IN THE UNRESTRAINED STATE; SAID STRIP HAVING A SERIES OF SPACED TABS ALONG ONE LONGITUDINAL EDGE THEREOF AND A SERIES OF SPACED SLOTS, IN MATING ALIGNMENT WITH THE TABS, ALONG THE OPPOSED LONGITUDINAL EDGE THEREOF; SAID PREDETERMINED DIAMETER BEING LESS THAN W/*, WHERE W IS THE STRIP WIDTH; MEANS FOR STORING SAID STRIP IN AN OPEN FLATTENED CONDITION IN THE FORM OF A COIL OF SUCCESSIVE LAYERS; MEANS FOR WITHDRAWING SAID STRIP LONGITUDINALLY FROM THE COIL TO PERMIT SAID STRIP TO TENT TO ASSUME A TUBULAR SHAPE; AND MEANS FOR ALIGNING SAID TABS AND SAID SLOTS AS SAID STRIP IS WITHDRAWN SO THAT EACH TAB IS DIRECTED TOWARD ITS RESPECTIVELY ASSOCIATED SLOT, WHEREBY SAID TABS AND SLOTS SUCCESSIVELY ENGAGE SO THAT THE UNCOILED STRIP FORMS A TUBE OF GREATER DIAMETER THAN SAID PREDETERMINED DIAMETER, WITH A TABSLOT INTERLOCKING JOINT.
Claim 2
Dependent Claim
161 words
AN EXTENDIBLE-COLLAPSIBLE BOOM SYSTEM, COMPRISING A STRIP OF RESILIENT MATERIAL WHICH HAS BEEN PRESTRESSED TO FORM A LONGITUDINAL TUBE OF PREDETERMINED DIAMETER IN THE UNRESTRAINED STATE; SAID STRIP HAVING A SERIES OF SPACED TABS ALONG ONE LONGITUDINAL EDGE THEREOF AND A SERIES OF SPACED SLOTS, IN MATING ALIGNMENT WITH THE TABS, ALONG THE OPPOSED LONGITUDINAL EDGE THEREOF; SAID PREDETERMINED DIAMETER BEING LESS THAN W/*, WHERE W IS THE STRIP WIDTH; MEANS FOR STORING SAID STRIP IN AN OPEN FLATTENED CONDITION IN THE FORM OF A COIL OF SUCCESSIVE LAYERS; MEANS FOR WITHDRAWING SAID STRIP LONGITUDINALLY FROM THE COIL TO PERMIT SAID STRIP TO TENT TO ASSUME A TUBULAR SHAPE; AND MEANS FOR ALIGNING SAID TABS AND SAID SLOTS AS SAID STRIP IS WITHDRAWN SO THAT EACH TAB IS DIRECTED TOWARD ITS RESPECTIVELY ASSOCIATED SLOT, WHEREBY SAID TABS AND SLOTS SUCCESSIVELY ENGAGE SO THAT THE UNCOILED STRIP FORMS A TUBE OF GREATER DIAMETER THAN SAID PREDETERMINED DIAMETER, WITH A TABSLOT INTERLOCKING JOINT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |