US4371807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Incandescent lamp with mechanically attached base
Assignee: Osram GmbH
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Filing: 1980-09-02
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Granted: 1983-02-01
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Expires: 2000-09-02
Abstract
Abstract To attach the base to a lamp without using base cement, adhesive or the l, the base is made as a two-part element, one being an outer base sleeve and the other an inner insert snugly matching the inner diameter of the base sleeve or shell. The insert has an annular bottom and longitudinally extending flaps with inwardly bent wings which resiliently press and engage the press seal of the lamp, thereby holding the socket in position.
Inventors
- 👤 Frizt Eckhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:36
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/42; H01K1/46
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
Incandescent lamp having a lamp bulb (1) and a press seal (2) joined to the lamp bulb; a tubular base shell (3) of essentially circular cross section; and means for securing the lamp bulb in the base shell comprising a sleeve-like insert (4) snugly matching the inner diameter of the base shell (3) said insert including an annular bottom (7) fitted within the base shell; the sleeve-like insert being diametrically severed to form diametrically opposite sleeve portions defining upstanding flaps (9) having part-cylindrical portions extending along the side walls of the base shell, the end portions of said upstanding flaps being bent inwardly of the sleeve-like insert, to form inwardly facing wings (10), said wings resiliently abutting and being pressed against the press seal; and an interlocking projection and recess means formed in one of the flap (9) and in the base shell to lock said sleeve-like insert (4) and said base shell (3) together and to prevent rotation of the sleeve like insert relative to the base shell.
Claim 2
Dependent Claim
169 words
Incandescent lamp having a lamp bulb (1) and a press seal (2) joined to the lamp bulb; a tubular base shell (3) of essentially circular cross section; and means for securing the lamp bulb in the base shell comprising a sleeve-like insert (4) snugly matching the inner diameter of the base shell (3) said insert including an annular bottom (7) fitted within the base shell; the sleeve-like insert being diametrically severed to form diametrically opposite sleeve portions defining upstanding flaps (9) having part-cylindrical portions extending along the side walls of the base shell, the end portions of said upstanding flaps being bent inwardly of the sleeve-like insert, to form inwardly facing wings (10), said wings resiliently abutting and being pressed against the press seal; and an interlocking projection and recess means formed in one of the flap (9) and in the base shell to lock said sleeve-like insert (4) and said base shell (3) together and to prevent rotation of the sleeve like insert relative to the base shell.
Claim 3
Dependent Claim
28 words
Lamp as claimed in claim 1 wherein the wings (10) lying opposite one another at the press seal (2) include an angle α of between 30° and 80°.
Claim 4
Dependent Claim
36 words
Lamp according to claim 1 wherein the upper edges (10a) of the wings (10) are partly beveled relative to a plane parallel with said angular bottom (7) at an angle β of less than about 80°.
Claim 5
Dependent Claim
36 words
Lamp according to claim 2 wherein the upper edges (10a) of the wings (10) are partly beveled relative to a plane parallel with said angular bottom (7) at an angle β of less than about 80°.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-31 | 1986-08-02 | 1987-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-31 | 1990-08-02 | 1991-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-31 | 1994-08-02 | 1995-02-01 | $7700.00 | Window Closed / Lapsed |