Patent US3249789A successfully refreshed from Google Patents.
US3249789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric incandescent projection lamp
Assignee: General Electric Co
•
Filing: 1962-08-30
•
Granted: 1966-05-03
•
Expires: 1982-08-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth S Preschel
- 👤 Robert W Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:42
CPC Classifications
H; H01; H01K; H01K7/00; H01K7/02; H01K1/00; H01K1/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
AN ELECTRIC INCANDESCENT PROJECTION LAMP COMPRISING A SEALED GLASS ENVELOPE; A GLASS BASE REFLECTOR MEMBER IN SAID ENVELOPE HAVING A REFLECTING COATING ON A FRONT SURFACE THEREOF AND A PAIR OF SUPPORT PINS EMBEDDED IN A BACK SURFACE THEREOF OUT OF CONTACT WITH SAID REFLECTING COATING; A PAIR OF LEAD-IN CONDUCTORS EXTENDING THROUGH SAID REFLECTOR HAVING EXPANDED PORTIONS ADJACENT SAID FRONT SURFACE; A FILAMENT CONNECTED ACROSS AND BETWEEN SAID LEAD-IN CONDUCTORS AT THE FRONT OF SAID REFLECTOR MEMBER; FIRST INSULATING MEMBERS BETWEEN SAID EXPANDED PORTIONS AND SAID FRONT SURFACE; SEPARATE INSULATING MEANS SURROUNDING SAID LEAD-IN CONDUCTORS ADJACENT THE REAR SURFACE OF THE REFLECTOR, AND A PAIR OF LEAD-IN SUPPORT WIRES SECURED TO SAID LEAD-IN CONDUCTORS IMMEDIATELY ADJACENT SAID SEPARATE INSULATING MEANS WHEREBY SAID INSULATING MEMBERS, SAID REFLECTOR, AND SAID SEPARATE INSULATING MEANS ARE SECURELY FASTENED TOGETHER AND SUPPORTED BY SAID LEAD-IN SUPPORT WIRES, SAID ENVELOPE BEING PROVIDED WITH A RELATIVELY FLAT PRESS BASE PORTION HAVING A PAIR OF ELECTRICAL CONTACT PINS AND A PAIR OF DUMMY CONTACT PINS MOUNTED THEREIN; SAID LEAD-IN SUPPORT WIRES BEING MOUNTED ON SAID CONTACT PINS; AND STRUTS INTERCONNECTING SAID DUMMY CONTACT PINS AND SAID LEAD-IN SUPPORT WIRES AND CONNECTED TO SAID SUPPORT PINS SEALED IN THE REAR OF THE REFLECTOR MEMBER.
Claim 2
Dependent Claim
206 words
AN ELECTRIC INCANDESCENT PROJECTION LAMP COMPRISING A SEALED GLASS ENVELOPE; A GLASS BASE REFLECTOR MEMBER IN SAID ENVELOPE HAVING A REFLECTING COATING ON A FRONT SURFACE THEREOF AND A PAIR OF SUPPORT PINS EMBEDDED IN A BACK SURFACE THEREOF OUT OF CONTACT WITH SAID REFLECTING COATING; A PAIR OF LEAD-IN CONDUCTORS EXTENDING THROUGH SAID REFLECTOR HAVING EXPANDED PORTIONS ADJACENT SAID FRONT SURFACE; A FILAMENT CONNECTED ACROSS AND BETWEEN SAID LEAD-IN CONDUCTORS AT THE FRONT OF SAID REFLECTOR MEMBER; FIRST INSULATING MEMBERS BETWEEN SAID EXPANDED PORTIONS AND SAID FRONT SURFACE; SEPARATE INSULATING MEANS SURROUNDING SAID LEAD-IN CONDUCTORS ADJACENT THE REAR SURFACE OF THE REFLECTOR, AND A PAIR OF LEAD-IN SUPPORT WIRES SECURED TO SAID LEAD-IN CONDUCTORS IMMEDIATELY ADJACENT SAID SEPARATE INSULATING MEANS WHEREBY SAID INSULATING MEMBERS, SAID REFLECTOR, AND SAID SEPARATE INSULATING MEANS ARE SECURELY FASTENED TOGETHER AND SUPPORTED BY SAID LEAD-IN SUPPORT WIRES, SAID ENVELOPE BEING PROVIDED WITH A RELATIVELY FLAT PRESS BASE PORTION HAVING A PAIR OF ELECTRICAL CONTACT PINS AND A PAIR OF DUMMY CONTACT PINS MOUNTED THEREIN; SAID LEAD-IN SUPPORT WIRES BEING MOUNTED ON SAID CONTACT PINS; AND STRUTS INTERCONNECTING SAID DUMMY CONTACT PINS AND SAID LEAD-IN SUPPORT WIRES AND CONNECTED TO SAID SUPPORT PINS SEALED IN THE REAR OF THE REFLECTOR MEMBER.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |