Patent US3646342A successfully refreshed from Google Patents.
US3646342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lampholder
Assignee: Cinch Connectors Ltd
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Filing: 1970-08-20
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Granted: 1972-02-29
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Expires: 1990-08-20
Abstract
Abstract This invention comprises a lampholder including a hollow metal body defining a lamp base receiving cavity having a metal attaching ring secured to the open end by a one-piece molding of synthetic plastics secured to a flange on the body and the base of the attaching ring, the plastics molding serving to electrically insulate the metal ring from the metal body.
Inventors
- 👤 John Arthur Howe
- 👤 Brian Darkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:36
CPC Classifications
B; B60; B60Q; B60Q3/00; B60Q3/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
151 words
A lampholder for assembly in an aperture in a support comprising a hollow metal body defining a lamp base receiving cavity open at one end, a radial flange at said one end of said body, contact means mounted in said cavity, a metal attaching ring comprising a base and resilient fingers attached to said body for snapping into the apertured support, the said ring being mounted at said one end of the metal body and a one-piece moulding of synthetic plastics securing said ring to said body and including a first annular portion embracing and secured to said radial flange and a second annular portion embracing and secured to said base of said attaching ring, a portion of the moulding disposed between said first and second annular portions being disposed in overlying relation to the said flange on the metal body and serving electrically to isolate the ring from said body.
Claim 2
Dependent Claim
151 words
A lampholder for assembly in an aperture in a support comprising a hollow metal body defining a lamp base receiving cavity open at one end, a radial flange at said one end of said body, contact means mounted in said cavity, a metal attaching ring comprising a base and resilient fingers attached to said body for snapping into the apertured support, the said ring being mounted at said one end of the metal body and a one-piece moulding of synthetic plastics securing said ring to said body and including a first annular portion embracing and secured to said radial flange and a second annular portion embracing and secured to said base of said attaching ring, a portion of the moulding disposed between said first and second annular portions being disposed in overlying relation to the said flange on the metal body and serving electrically to isolate the ring from said body.
Claim 3
Dependent Claim
41 words
A lampholder as claimed in claim 1, wherein the said first and second annular portions are deformed by heat and pressure to embrace and be secured to the flange on the metal body and the base of the attaching ring respectively.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |