US4396898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lampholder having thermal protector
Assignee: LIBERTY LIGHTING Co Inc A CORP OF
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Filing: 1982-03-26
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Granted: 1983-08-02
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Expires: 2002-03-26
Abstract
Abstract A lampholder includes a thermal protector for disconnecting the lamp from electrical power if the lampholder is overheated. The thermal protector is a packaged device and is held by a keeper. The keeper may be one piece with a contact to the lamp. Keepers for both glass and metal packaged thermal protectors are described.
Inventors
- 👤 Julius F. Tibolla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:58
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/64; H01H37/68
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
An improved thermally protected lampholder of the type including a housing, said housing defining an interior and having a shelf partitioning said interior, a threaded shell arranged within said housing for making contact with the threaded terminal of a lamp, a strip contact arranged on said shelf to make contact with the center terminal of said lamp and a thermal protector coupled to said strip contact, wherein the improvement comprises: said thermal protector is a packaged thermal protector; and a keeper proximate to said shelf and adapted to retain said packaged thermal protector, said keeper electrical coupled to said strip conductor.
Claim 2
Dependent Claim
101 words
An improved thermally protected lampholder of the type including a housing, said housing defining an interior and having a shelf partitioning said interior, a threaded shell arranged within said housing for making contact with the threaded terminal of a lamp, a strip contact arranged on said shelf to make contact with the center terminal of said lamp and a thermal protector coupled to said strip contact, wherein the improvement comprises: said thermal protector is a packaged thermal protector; and a keeper proximate to said shelf and adapted to retain said packaged thermal protector, said keeper electrical coupled to said strip conductor.
Claim 3
Dependent Claim
23 words
The improved thermally protected lampholder of claim 1 wherein said keeper and said strip connectors are arranged on opposite sides of said shelf.
Claim 4
Dependent Claim
32 words
The improved thermally protected lampholder of claim 2 wherein said packaged thermal protector is enclosed by an elongated glass envelope and said keeper is a clip sized to clasp said glass envelope.
Claim 5
Dependent Claim
21 words
The improved thermally protected lampholder of claim 3 wherein said clip and said strip contact are one piece of spring metal.
Claim 6
Dependent Claim
27 words
The improved thermally protected lampholder of claim 3 or 4 wherein said packaged thermal protector has two leads, one of which is electrically connected to said clip.
Claim 7
Dependent Claim
34 words
The improved thermally protected lampholder of claim 2 wherein said packaged thermal protector is enclosed by a metal envelope having hooks and said keeper is a prong sized to be clasped by said hooks.
Claim 8
Dependent Claim
20 words
The improved thermal protected lampholder of claim 6 wherein said protector has a flat terminal in contact with said prong.
Claim 9
Dependent Claim
23 words
The improved thermally protected lampholder of claim 6 or 7 wherein said prong and said strip contact are one piece of spring metal.
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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |