Patent US4130774A successfully refreshed from Google Patents.
US4130774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash tube having improved end cap construction
Assignee: GTE Sylvania Inc
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Filing: 1977-11-14
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Granted: 1978-12-19
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Expires: 1997-11-14
Abstract
Abstract A flash tube has a lead-in wire extending through the end of the flash tube. An end cap is bonded to the end of the flash tube with bonding material. A flexible sleeve is disposed around the lead-in wire to prevent contact between the bonding material and the lead-in wire.
Inventors
- 👤 Robert J. Cosco
- 👤 Charles C. Kokinos, Jr.
- 👤 Charles J. Geleski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:52
CPC Classifications
H; H01; H01J; H01J5/00; H01J5/46
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
80 words
A flash tube comprising: an elongated glass envelope sealed at its end; an end cap having a shoulder portion and a terminal portion, the shoulder portion encircling the end of the envelope and being bonded thereto with bonding material; a lead-in wire extending through the end of the envelope and being connected to the terminal portion of the end cap; and a cushioning sleeve disposed on the lead-in wire and preventing contact of the bonding material with the lead-in wire.
Claim 2
Dependent Claim
80 words
A flash tube comprising: an elongated glass envelope sealed at its end; an end cap having a shoulder portion and a terminal portion, the shoulder portion encircling the end of the envelope and being bonded thereto with bonding material; a lead-in wire extending through the end of the envelope and being connected to the terminal portion of the end cap; and a cushioning sleeve disposed on the lead-in wire and preventing contact of the bonding material with the lead-in wire.
Claim 3
Dependent Claim
37 words
The flash tube of claim 1 wherein the end cap has a cavity extending from the shoulder portion to the terminal portion and where the cushioning sleeve extends from the end of the envelope into the cavity.
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) | 1981-12-18 | 1982-06-19 | 1982-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-18 | 1986-06-19 | 1986-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-18 | 1990-06-19 | 1990-12-19 | $7700.00 | Window Closed / Lapsed |