US3169657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for forming lamp tubes and article formed thereby
Assignee: Duro Test Corp
•
Filing: 1961-07-06
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Granted: 1965-02-16
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Expires: 1981-07-06
Abstract
No abstract record available.
Inventors
- 👤 Andrew H Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:58
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/04; C03B23/051
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
109 words
IN COMBINATION WITH, MEANS FOR SUPPORTING A GLASS TUBE FOR ROTATION ON ITS LONGITUDINAL AXIS IN A HORIZONTAL PLANE, AT LEAST TWO TORCHES SPACED AXIALLY OF SAID TUBE AND CARRIAGE MEANS FOR SUPPORTING SAID TORCHES AND ADVANCING THEM ALONG A PATH PARALLEL TO THE AXIS OF SAID TUBE IN TIMED RELATION TO THE SPEED OF ROTATION OF SAID TUBE, OF COMBUSTIBLE FUEL MIXTURE SUPPLY MEANS FOR SAID TORCHES, AND MEANS ACTUATED BY SAID CARRIAGE TO SUCCESSIVELY ACTIVATE AND DEACTIVATE SAID SUPPLY MEANS TO RENDER SAID TORCHES SUCCESSIVELY OPERATIVE AND INOPERATIVE WHEREBY TOW CIRCUMFERENTIALLY DISPLACED GROOVES AR FORMED BY THE SAGGING OF THE WALL OF SAID TUBE ALONG HELICAL PATHS.
Claim 2
Dependent Claim
109 words
IN COMBINATION WITH, MEANS FOR SUPPORTING A GLASS TUBE FOR ROTATION ON ITS LONGITUDINAL AXIS IN A HORIZONTAL PLANE, AT LEAST TWO TORCHES SPACED AXIALLY OF SAID TUBE AND CARRIAGE MEANS FOR SUPPORTING SAID TORCHES AND ADVANCING THEM ALONG A PATH PARALLEL TO THE AXIS OF SAID TUBE IN TIMED RELATION TO THE SPEED OF ROTATION OF SAID TUBE, OF COMBUSTIBLE FUEL MIXTURE SUPPLY MEANS FOR SAID TORCHES, AND MEANS ACTUATED BY SAID CARRIAGE TO SUCCESSIVELY ACTIVATE AND DEACTIVATE SAID SUPPLY MEANS TO RENDER SAID TORCHES SUCCESSIVELY OPERATIVE AND INOPERATIVE WHEREBY TOW CIRCUMFERENTIALLY DISPLACED GROOVES AR FORMED BY THE SAGGING OF THE WALL OF SAID TUBE ALONG HELICAL PATHS.
Claim 3
Dependent Claim
34 words
AN ENCLOSURE COMPRISING A SINGLE THIN WALLED GLASS TUBE HAVING AT LEAST ONE HELICAL GROOVE FORMED IN ITS WALL COMPRISING A PLURALITY OF DISCONNECTED SECTIONS LYING ON AND LONGITUDINALLY SPACED ALONG THE SAME HELIX.
Claim 4
Dependent Claim
34 words
AN ENCLOSURE COMPRISING A SINGLE THIN WALLED GLASS TUBE HAVING AT LEAST ONE HELICAL GROOVE FORMED IN ITS WALL COMPRISING A PLURALITY OF DISCONNECTED SECTIONS LYING ON AND LONGITUDINALLY SPACED ALONG THE SAME HELIX.
References Cited (Backward Citations)
US1926552A
Cited
US2282993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |