Patent US3211941A successfully refreshed from Google Patents.
US3211941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament supports for tubular incandescent lamps
Assignee: Osram GmbH
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Filing: 1963-06-20
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Granted: 1965-10-12
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Sanden Jurgen
- 👤 Kiesel Rolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:00
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/18; H01K1/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN AN ELECTRIC INCANDESCENT LAMP COMPRISING A TUBULAR ENVELOPE HAVING A FILAMENT COIL EXTENDING AXIALLY OF TH ENVELOPE AND AT LEAST ONE SUPPORT MEMBER SUPPORTING THE FILAMENT FROM THE ENVELOPE WALL, SAID SUPPORT MEMBER FORMED FROM A SINGLE WIRE LENGTH BENT TO FORM A RETROVERTED MID-SECTION HAVING ITS BIGHT PORTION ENGAGEABLE WITH THE ENVELOPE WALL AND TWO CLAMPING LEGS EXTENDING FROM SAID MID-SECTION, SAID LEGS HAVING COOPERATING ADJACENT CLAMPING PORTIONS THEREOF INTERMEDIATE THEIR LENGTHS, AT LEAST ONE SAID CLAMPING PORTION BEING CURVED SO THAT BETWEEN THEM THEY EMBRACE THE FILAMENT COIL AND ENGAGE IN AT LEAST AT THREE POINTS AROUND ITS PERIPHERY, SAID CLAMPING LEGS HAVING THEIR FREE ENDS BEYOND SAID CLAMPING PORTIONS EXTENDING DIVERGENTLY AWAY FROM THE FILAMENT INTO ENGAGEMENT WITH SAID ENVELOPE WALL, SAID CLAMPING LEGS AT THEIR CLAMPING PORTIONS CROSSING OVER AT LEAST AT ONE SIDE OF THE FILAMENT COIL.
Claim 2
Dependent Claim
143 words
IN AN ELECTRIC INCANDESCENT LAMP COMPRISING A TUBULAR ENVELOPE HAVING A FILAMENT COIL EXTENDING AXIALLY OF TH ENVELOPE AND AT LEAST ONE SUPPORT MEMBER SUPPORTING THE FILAMENT FROM THE ENVELOPE WALL, SAID SUPPORT MEMBER FORMED FROM A SINGLE WIRE LENGTH BENT TO FORM A RETROVERTED MID-SECTION HAVING ITS BIGHT PORTION ENGAGEABLE WITH THE ENVELOPE WALL AND TWO CLAMPING LEGS EXTENDING FROM SAID MID-SECTION, SAID LEGS HAVING COOPERATING ADJACENT CLAMPING PORTIONS THEREOF INTERMEDIATE THEIR LENGTHS, AT LEAST ONE SAID CLAMPING PORTION BEING CURVED SO THAT BETWEEN THEM THEY EMBRACE THE FILAMENT COIL AND ENGAGE IN AT LEAST AT THREE POINTS AROUND ITS PERIPHERY, SAID CLAMPING LEGS HAVING THEIR FREE ENDS BEYOND SAID CLAMPING PORTIONS EXTENDING DIVERGENTLY AWAY FROM THE FILAMENT INTO ENGAGEMENT WITH SAID ENVELOPE WALL, SAID CLAMPING LEGS AT THEIR CLAMPING PORTIONS CROSSING OVER AT LEAST AT ONE SIDE OF THE FILAMENT COIL.
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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |