US3884615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash Lamp Mount Construction
Assignee: General Electric Co
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Filing: 1974-03-21
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Granted: 1975-05-20
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Expires: 1994-03-21
Abstract
Abstract A glass bead is provided over an end of a pair of inlead wires for a flash lamp. An opening is provided through the bead between and in communication with both inlead wires, and is filled with primer material. One of the inlead wires may extend through the bead and into contact with combustible material in the lamp. The underside of the bead may be sleeved or shaped to prevent shorting between the inlead wires.
Inventors
- 👤 John C Sobieski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:26
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
135 words
A photoflash lamp of the type having a bulb and a mount comprising a pair of inleads extending within the bulb and having flash ignition means connected across said inleads within said bulb, said bulb containing combustible material ignitable by said flash ignition means, wherein said flash ignition means comprises an electrically insulatIve member, said inleads extending into said insulative member, an opening through said insulative member between and in communication with both of said inleads, said opening having ends thereof at different locations on the surface of said insulative member and communicating with the interior of said bulb, at each of said ends, and primer material contained in said opening and connected electrically across said inleads said primer material being exposed to said interior of the bulb at both said ends of said opening.
Claim 2
Dependent Claim
135 words
A photoflash lamp of the type having a bulb and a mount comprising a pair of inleads extending within the bulb and having flash ignition means connected across said inleads within said bulb, said bulb containing combustible material ignitable by said flash ignition means, wherein said flash ignition means comprises an electrically insulatIve member, said inleads extending into said insulative member, an opening through said insulative member between and in communication with both of said inleads, said opening having ends thereof at different locations on the surface of said insulative member and communicating with the interior of said bulb, at each of said ends, and primer material contained in said opening and connected electrically across said inleads said primer material being exposed to said interior of the bulb at both said ends of said opening.
Claim 3
Dependent Claim
25 words
A flash lamp as claimed in claim 1, in which one end of said opening through the insulative member is directed toward said combustible material.
Claim 4
Dependent Claim
24 words
A flash lamp as claimed in claim 2, in which said insulative member overlies at least a portion of the ends of said inleads.
Claim 5
Dependent Claim
69 words
A flash lamp as claimed in claim 2, in which said inleads are substantially mutually parallel and enter into the bulb through a seal region at which the bulb wall is relatively thicker than the rest of the bulb wall, said opening extending substantially straight through the insulative member in a direction substantially parallel to said inleads, the other end of said opening being directed toward said seal region.
Claim 6
Dependent Claim
29 words
A flash lamp as claimed in claim 4, in which said opening is tapered with the larger cross-section area thereof being at said end directed toward said seal region.
Claim 7
Dependent Claim
28 words
A flash lamp as claimed in claim 4, in which said opening is in the shape of a slot extending between said inleads and through said insulative member.
Claim 8
Dependent Claim
39 words
A flash lamp as claimed in claim 6, in which said slot has a height of about 0.080 inch through said insulative member, a length of about 0.040 inch between said inleads, and a width of about 0.015 inch.
Claim 9
Dependent Claim
18 words
A flash lamp as claimed in claim 4, in which said opening has a substantially circular cross-sectional shape.
Claim 10
Dependent Claim
30 words
A flash lamp as claimed in claim 8, in which said circular opening is tapered with the larger diameter end thereof being at said end directed toward said seal region.
Claim 11
Dependent Claim
24 words
A flash lamp as claimed in claim 9, in which said insulative member overlies at least a portion of the ends of said inleads.
Claim 12
Dependent Claim
38 words
A flash lamp as claimed in claim 9, in which said tapered circular opening has a length of about 0.080 inch, a small end diameter of about 0.024 inch, and a larger end diameter of about 0.040 inch.
Claim 13
Dependent Claim
28 words
A flash lamp as claimed in claim 4, in which one of said inleads extends entirely through said insulative member and into electrical contact with said combustible material.
Claim 14
Dependent Claim
35 words
A flash lamp as claimed in claim 4, including at least one sleeve of insulative material positioned around one of said inleads and attached to and extending from said insulative member toward said seal region.
Claim 15
Dependent Claim
25 words
A flash lamp as claimed in claim 4, in which said insulative member extends toward said seal region alongside at least one of said inleads.
Claim 16
Dependent Claim
28 words
A flash lamp as claimed in claim 4, in which said inleads are shaped to be relatively farther apart at said seal region than at said insulative member.
References Cited (Backward Citations)
US3768957A
Cited
US3823994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |