Patent US4379080A successfully refreshed from Google Patents.
US4152622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp-base assembly
Assignee: Cooper Industries LLC
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Filing: 1977-06-24
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Granted: 1979-05-01
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Expires: 1997-06-24
Abstract
Abstract A baseless light bulb is locked into a one-piece molded base and the base provides mechanical and electrical connection of the light bulb to a circuit board.
Inventors
- 👤 James J. Fitzgerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:27
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/44
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
229 words
A lamp having a glass envelope with first and second electrical leads passing sealably therethrough and a base therefor for mounting in a shaped hole in a circuit board comprising: (a) said base being of electrically insulating material; (b) means for retaining said lamp in said base; (c) said base having at least one portion for projecting through said shaped hole and at least one camming means adapted to applying holding force to a first surface of said circuit board; (d) first and second surface areas on said base adapted to be drawn toward a second surface of said circuit board by said holding force when assembled; (e) said first electrical lead being disposed at said first surface area in a position where it will be pressed between said first surface area and said circuit board when installed; (f) said second electrical lead being disposed at said second surface area in a position where it will be pressed between said surface area and said circuit board when installed; and (g) said at least one portion for projecting through comprises: (i) two facing cylindrical sectors symmetrically disposed; (ii) said cylindrical sectors being fittable through said shaped hole in at least one angular relationship therewith; and (iii) annular segment relief spaces inwardly adjacent said cylindrical sectors whereby said cylindrical sectors are permitted to deflect inward during installation in said circuit board.
Claim 2
Dependent Claim
229 words
A lamp having a glass envelope with first and second electrical leads passing sealably therethrough and a base therefor for mounting in a shaped hole in a circuit board comprising: (a) said base being of electrically insulating material; (b) means for retaining said lamp in said base; (c) said base having at least one portion for projecting through said shaped hole and at least one camming means adapted to applying holding force to a first surface of said circuit board; (d) first and second surface areas on said base adapted to be drawn toward a second surface of said circuit board by said holding force when assembled; (e) said first electrical lead being disposed at said first surface area in a position where it will be pressed between said first surface area and said circuit board when installed; (f) said second electrical lead being disposed at said second surface area in a position where it will be pressed between said surface area and said circuit board when installed; and (g) said at least one portion for projecting through comprises: (i) two facing cylindrical sectors symmetrically disposed; (ii) said cylindrical sectors being fittable through said shaped hole in at least one angular relationship therewith; and (iii) annular segment relief spaces inwardly adjacent said cylindrical sectors whereby said cylindrical sectors are permitted to deflect inward during installation in said circuit board.
Claim 3
Dependent Claim
78 words
The apparatus recited in claim 1, wherein said means for retaining comprises: (a) said lamp having a generally flat lower body having first and second sides; (b) said lamp having an envelope which is larger in at least one dimension than said lower body; (c) inner surfaces on said base for engaging at least said lower body; and (d) at least one notch and at least one boss for holding engagement between said base and said lower body.
Claim 4
Dependent Claim
26 words
The apparatus recited in claim 2 further comprising other inner surfaces on said base for guiding and supporting engagement with a peripheral portion of said envelope.
Claim 5
Dependent Claim
25 words
The apparatus recited in claim 1 further comprising means for securing said first and second electrical leads against said first and second surface areas respectively.
Claim 6
Dependent Claim
74 words
The apparatus recited in claim 5 further comprising: (a) said at least one camming means being a tangential undercut in the outer surface of at least one of said cylindrical sectors; (b) at least part of the surface adjacent to said undercut being inclined to said circuit board; and (c) and the surface adjacent to said undercut being adapted to overlap the perimeter of said shaped hole upon rotation of said base during installation.
Claim 7
Dependent Claim
42 words
The apparatus recited in claim 5 wherein said tangential undercut terminating in a stop bar, said stop bar being adapted to abut an interfering surface in said shaped hole whereby the maximum rotation of said base is limited to a predetermined amount.
Claim 8
Dependent Claim
20 words
The apparatus recited in claim 1 further comprising the axial extremities of said two facing cylindrical sectors being frusto-conal sectors.
Claim 9
Dependent Claim
13 words
The apparatus recited in claim 1 wherein said means for retaining is adhesive.
Claim 10
Dependent Claim
12 words
The apparatus recited in claim 8 wherein said adhesive is electrically conductive.
Claim 11
Dependent Claim
24 words
The apparatus recited in claim 1 wherein said means for retaining comprises means for providing mechanical retention of said glass envelope in said base.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |