Patent US4342591A successfully refreshed from Google Patents.
Patent US4399491A successfully refreshed from Google Patents.
US4399491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folded edge seal for flashlamp array
Assignee: Osram Sylvania Inc
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Filing: 1982-07-26
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Granted: 1983-08-16
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Expires: 2002-07-26
Abstract
Abstract A multi-lamp photoflash unit has a plastic housing member with a back portion having a plurality of cavities formed to receive a reflector unit wherein is disposed a plurality of flashlamps and a light transmitting front portion formed to fold over and enclose the flashlamps and is characterized by the improvement wherein at least one part of one of the front and back portions of the plastic housing is folded over the edge of the other, aligned in parallel with and sealed to the other of the front and back portions to provide a shear-type seal. The multi-lamp photoflash unit is fabricated by a process wherein the front and back layers are contacted, one is folded over, aligned with and sealed to the other by spaced spot seals.
Inventors
- 👤 Carl F. Kackenmeister
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:50
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0442; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1034; Y10T156/1036
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
145 words
In a multilamp photoflash unit having a plastic housing member with a foldable light transmittable front portion and multiple cavity back portion formed for enclosure of flashlamps therein, a plastic housing member sealing process comprising the steps of: folding one of said front and back portions of said plastic housing member with respect to the other to form an envelope for enclosing a plurality of flashlamps; wrapping a portion of said one of said folded front and back portions about the edge of the other one thereof and aligning said portions to provide more than two layers of plastic housing member; positioning said multiple layers of wrapped plastic housing member portions intermediate an energizing source; and activating said energy source to seal at least one of said wrapped plastic layers to another and provide a plastic housing enclosure and container for a multiplicity of flashlamps.
Claim 2
Dependent Claim
145 words
In a multilamp photoflash unit having a plastic housing member with a foldable light transmittable front portion and multiple cavity back portion formed for enclosure of flashlamps therein, a plastic housing member sealing process comprising the steps of: folding one of said front and back portions of said plastic housing member with respect to the other to form an envelope for enclosing a plurality of flashlamps; wrapping a portion of said one of said folded front and back portions about the edge of the other one thereof and aligning said portions to provide more than two layers of plastic housing member; positioning said multiple layers of wrapped plastic housing member portions intermediate an energizing source; and activating said energy source to seal at least one of said wrapped plastic layers to another and provide a plastic housing enclosure and container for a multiplicity of flashlamps.
Claim 3
Dependent Claim
33 words
The plastic housing member sealing process of claim 1 wherein said front portion of said housing member is wrapped about and sealed to said multiple cavity back portion to provide a flashlamp envelope.
Claim 4
Dependent Claim
33 words
The plastic housing member sealing process of claim 1 wherein said back portion of said housing member is wrapped about and sealed to said front portion of said multilamp photoflash unit housing member.
Claim 5
Dependent Claim
30 words
The plastic housing member sealing process of claim 1 wherein one of said wrapped front and back plastic housing member portions is sealed to the other with multiple spot seals.
Claim 6
Dependent Claim
145 words
A multilamp photoflash unit comprising: a printed circuit board having a printed circuit thereon; a plurality of photoflash lamps affixed to said printed circuit of said circuit board; a reflector unit having a plurality of cavities formed to receive said photoflash lamps; and a plastic housing member having a back portion with a plurality of cavities wherein is positioned said reflector unit and said flashlamps and a foldable light transmitting front portion forming an envelope containing said photoflash lamps and reflector unit, said front and back portions contacting said printed circuit board and affixed thereto and one of said front and back portions wrapped about and in alignment with the edge of and sealed to the other one of said front and back portions of said plastic housing member whereby said sealed wrapped front and back portions form a seal subjected to a shear-like force.
Claim 7
Dependent Claim
145 words
A multilamp photoflash unit comprising: a printed circuit board having a printed circuit thereon; a plurality of photoflash lamps affixed to said printed circuit of said circuit board; a reflector unit having a plurality of cavities formed to receive said photoflash lamps; and a plastic housing member having a back portion with a plurality of cavities wherein is positioned said reflector unit and said flashlamps and a foldable light transmitting front portion forming an envelope containing said photoflash lamps and reflector unit, said front and back portions contacting said printed circuit board and affixed thereto and one of said front and back portions wrapped about and in alignment with the edge of and sealed to the other one of said front and back portions of said plastic housing member whereby said sealed wrapped front and back portions form a seal subjected to a shear-like force.
Claim 8
Dependent Claim
25 words
The multilamp photoflash unit of claim 5 wherein said back portion is wrapped about and sealed to said front portion of said plastic housing member.
Claim 9
Dependent Claim
25 words
The multilamp photoflash unit of claim 5 wherein said front portion is wrapped about and sealed to said back portion of said plastic housing member.
Claim 10
Dependent Claim
26 words
The multilamp photoflash unit of claim 5 wherein said wrapped front and back portions are sealed to one another by a plurality of spaced spot seals.
Claim 11
Dependent Claim
28 words
The multilamp photoflash unit of claim 5 wherein said wrapped front and back portions of said plastic housing member are sealed to one another by spaced heat seals.
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) | 1986-08-15 | 1987-02-14 | 1987-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-15 | 1991-02-14 | 1991-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-15 | 1995-02-14 | 1995-08-16 | $7700.00 | Window Closed / Lapsed |