US3872560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming beaded lead-in wires for lamps
Assignee: General Electric Co
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Filing: 1973-07-26
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Granted: 1975-03-25
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Expires: 1993-07-26
Abstract
Abstract Lead-in wires for a lamp are beaded together by providing an offset in at least one of the wires, placing a ring of glass around the wires and letting it rest on the offset, and heating the glass so that it forms a bead for holding the wires in mutual relationship. A glass sleeve may be placed around one of the wires so as to rest on top of the glass ring prior to the steps of heating, resulting in an integral set of beaded wires of which one wire is sleeved above the bead.
Inventors
- 👤 John J Bock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:20
CPC Classifications
H; H01; H01J; H01J9/00; H01J9/24; H01J9/245; H01J9/247; H01J9/28; H01K; H01K1/00; H01K1/38
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
A method of making beaded lead-in wires, comprising the steps of providing a plurality of lead-in wires to be beaded together, shaping at least one of said wires to provide a lateral U-shaped offset immediately below where the bead is desired, supporting the wires in substantially parallel spaced-apart relationship with at least one offset extending outwardly below the desired bead location, placing a ring of vitreous material around the lead-in wires so as to rest on said offset, and heating the ring so that it forms a bead sealed to the lead-in wires.
Claim 2
Independent Claim
93 words
A method of making beaded lead-in wires, comprising the steps of providing a plurality of lead-in wires to be beaded together, shaping at least one of said wires to provide a lateral U-shaped offset immediately below where the bead is desired, supporting the wires in substantially parallel spaced-apart relationship with at least one offset extending outwardly below the desired bead location, placing a ring of vitreous material around the lead-in wires so as to rest on said offset, and heating the ring so that it forms a bead sealed to the lead-in wires.
Claim 3
Dependent Claim
42 words
A method as claimed in claim 1 in which there are two of said lead-in wires and each is provided with a lateral U-shaped offset, said wires being positioned so that their offsets extend outwardly from each other below the bead location.
Claim 4
Independent Claim
126 words
A method of making beaded lead-in wires, comprising the steps of providing a plurality of lead-in wires to be beaded together, shaping at least one of said wires to provide a lateral offset immediately below where the bead is desired, supporting the wires in substantially parallel spaced-apart relationship with at least one offset extending outwardly below the desired bead location, placing a ring of vitreous material around the lead-in wires so as to rest on said offset, placing a sleeve of vitreous material over one of the lead-in wires so as to rest on top of said ring, and heating the ring so that it forms a bead sealed to the leadin wires, whereby during said step of heating the sleeve becomes sealed to the bead.
Claim 5
Independent Claim
126 words
A method of making beaded lead-in wires, comprising the steps of providing a plurality of lead-in wires to be beaded together, shaping at least one of said wires to provide a lateral offset immediately below where the bead is desired, supporting the wires in substantially parallel spaced-apart relationship with at least one offset extending outwardly below the desired bead location, placing a ring of vitreous material around the lead-in wires so as to rest on said offset, placing a sleeve of vitreous material over one of the lead-in wires so as to rest on top of said ring, and heating the ring so that it forms a bead sealed to the leadin wires, whereby during said step of heating the sleeve becomes sealed to the bead.
Claim 6
Dependent Claim
26 words
A method as claimed in claim 1 in which said lead-in wires are positioned less than about one-eighth of an inch apart at the bead location.
Claim 7
Dependent Claim
45 words
A method as claimed in claim 1 including the step of positioning said lead-in wires at an angle from the vertical and rotating the wires as a unit about an axis substantially parallel to the wires during said step of heating and forming the bead.
References Cited (Backward Citations)
US3316049A
Cited
US3475641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |