Patent US4028577A successfully refreshed from Google Patents.
US4028577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp with insulating base
Assignee: GTE Sylvania Inc
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Filing: 1976-06-23
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Granted: 1977-06-07
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Expires: 1996-06-23
Abstract
Abstract An electric lamp having a light-transmitting envelope, such as a glass bulb, secured to a plastic base having a symmetrical wedge-lock portion. Lead-in wires from the glass bulb are threaded through channels in the plastic base and extend alongside the wedge-lock portion to form contacts without soldering.
Inventors
- 👤 Paul E. Gates
- 👤 Stephen F. Kimball
- 👤 Stephen J. Leadvaro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:36
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/46
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
239 words
An electric lamp comprising, in combination: an hermetically sealed, light-transmitting envelope containing an energizable source of light and having a sealed portion at one end; an insulting base member having a cylindrical cavity that is larger than the sealed end portion of said envelope, a wedge-lock portion depending from the bottom of said cavity, said wedge-lock portion having opposed substantially flat sides with locating means, including a transverse lock-in rib, formed on each of said opposed flat sides, and a plurality of channels passing through the bottom of said cylindrical cavity, said sealed end portion of the envelope being secured within said base cavity; and a plurality of lead-in wires extending through the sealed end portion of said envelope and into the respective channels in the bottom of said cylindrical cavity, each of said lead-in wires having a terminal portion extending outwardly from the bottom of said cavity and proceeding alongside said wedge-lock portion from the top to the bottom thereof, the terminal portion of at least a first one of said lead-in wires extending alongside and approximately parallel to one of said flat sides past the transverse lock-in rib thereon and engaging the bottom of said wedge-lock portion, and the terminal portion of at least a second one of said lead-in wires extending alongside and approximately parallel to the other of said flat sides past the transverse lock-in rib thereon and engaging the bottom of said wedge-lock portion.
Claim 2
Dependent Claim
239 words
An electric lamp comprising, in combination: an hermetically sealed, light-transmitting envelope containing an energizable source of light and having a sealed portion at one end; an insulting base member having a cylindrical cavity that is larger than the sealed end portion of said envelope, a wedge-lock portion depending from the bottom of said cavity, said wedge-lock portion having opposed substantially flat sides with locating means, including a transverse lock-in rib, formed on each of said opposed flat sides, and a plurality of channels passing through the bottom of said cylindrical cavity, said sealed end portion of the envelope being secured within said base cavity; and a plurality of lead-in wires extending through the sealed end portion of said envelope and into the respective channels in the bottom of said cylindrical cavity, each of said lead-in wires having a terminal portion extending outwardly from the bottom of said cavity and proceeding alongside said wedge-lock portion from the top to the bottom thereof, the terminal portion of at least a first one of said lead-in wires extending alongside and approximately parallel to one of said flat sides past the transverse lock-in rib thereon and engaging the bottom of said wedge-lock portion, and the terminal portion of at least a second one of said lead-in wires extending alongside and approximately parallel to the other of said flat sides past the transverse lock-in rib thereon and engaging the bottom of said wedge-lock portion.
Claim 3
Dependent Claim
109 words
A lamp according to claim 1 wherein said energizable source of light comprises a pair of filaments each of which is connected to a respective pair of said lead-in wires, whereby four lead-in wires extend through the sealed end portion of said envelope into four respective channels in the bottom of said cylindrical cavity, and the terminal portions of a first pair of said lead-in wires extend alongside and approximately parallel to one of the flat sides of said wedge-lock portion, and the terminal portions of a second pair of said lead-in wires extend alongside and approximately parallel to the other of the flat sides of said wedge-lock portion.
Claim 4
Dependent Claim
37 words
A lamp according to claim 2 wherein said base member is formed of a plastic material, and said sealed end portion of said envelope is secured within said plastic base cavity by a layer of cement therebetween.
Claim 5
Dependent Claim
33 words
A lamp according to claim 1 wherein said envelope is a glass bulb, said sealed end portion of the envelope comprises a reentrant glass stem, and said base member is formed of plastic.
Claim 6
Dependent Claim
107 words
The lamp according to claim 4 wherein said energizable source of light comprises a pair of filaments each of which is connected to a respective pair of lead-in wires, whereby four lead-in wires extend through the reentrant stem of said envelope into four respective channels in the bottom of said cylindrical cavity, and the terminal portions of a first pair of said lead-in wires extend alongside and approximately parallel to one of the flat sides of said wedge-lock portion, and the terminal portions of a second pair of said lead-in wires extend alongside and approximately parallel to the other of the flat sides of said wedge-lock portion.
Claim 7
Dependent Claim
37 words
A lamp according to claim 5 wherein said locating means comprise a central axial rib and said transverse rib symmetrically formed on each of the opposed flat sides of the wedge-lock portion of said plastic base member.
Claim 8
Dependent Claim
70 words
A lamp according to claim 6 wherein each of said transverse ribs has a pair of slots for accommodating the terminal portions of the pair of lead-in wires extending alongside and parallel to the respective flat side of the wedge-lock on which the rib is formed, the terminal portions of said lead-in wires lying in the respective slots in said transverse ribs and engaging the bottom of said wedge-lock portion.
Claim 9
Dependent Claim
31 words
A lamp according to claim 4 wherein the sealed end portion of said glass bulb is secured within the cylindrical cavity of said plastic base by a layer of cement therebetween.
Claim 10
Dependent Claim
38 words
A lamp according to claim 1 wherein said locating means comprise a central axial rib and said transverse lock-in rib symmetrically formed on each of the opposed flat sides of the wedge-lock portion of said insulating base member.
Claim 11
Dependent Claim
74 words
A lamp according to claim 9 wherein each of said transverse ribs has at least one slot for accommodating the terminal portion of the lead-in wire extending alongside and parallel to the respective flat side of the wedge-lock on which the rib is formed, the terminal portions of said lead-in wires lying in the respective slots in said transverse ribs and extending past said transverse ribs and engaging the bottom of said wedge-lock portion.
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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |