US3668602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable safety lamp structure
Assignee: Triangle Wire & Cable Inc A Corp Of Delaware
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Filing: 1970-08-26
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Granted: 1972-06-06
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Expires: 1990-08-26
Abstract
Abstract A portable safety lamp includes a socket assembly, an elongated hollow dielectric handle for housing the socket assembly therewithin and a wire mesh cage for protecting a light bulb screwed into the socket assembly. The socket assembly includes a pair of contacts that interconnect an extension cord to the socket assembly, and a freely detachable unitary dielectric adapter that acts as a spacer and resilient retainer of the pair of contacts. The adapter and the pair of contacts are uniquely designed so that they provide two-pronged and three-pronged outlets. The adapter eliminates a large number of structural pieces used in the prior art socket assembly and simplifies the socket assembly manufacture.
Inventors
- 👤 Richard H Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:18
CPC Classifications
F; F21; F21L; F21L14/00; F21L14/02; F21V; F21V23/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
A portable safety lamp comprising: a socket assembly including a socket head adapted to receive a light bulb therein, an electrical switch mounted on said socket head for establishing electrical connections between said bulb and socket head, a pair of electrical contacts connected to said switch and axially extending from said socket head, a freely detachable unitary dielectric adapter positioned between said pair of contacts, said adapter having a bearing surface in free contact with said socket head and including a dielectric portion resiliently securing said adapter to said socket head; an electrical conductor cord connected to said contacts for supplying power thereto; and an elongated hollow dielectric handle for housing said socket assembly.
Claim 2
Dependent Claim
114 words
A portable safety lamp comprising: a socket assembly including a socket head adapted to receive a light bulb therein, an electrical switch mounted on said socket head for establishing electrical connections between said bulb and socket head, a pair of electrical contacts connected to said switch and axially extending from said socket head, a freely detachable unitary dielectric adapter positioned between said pair of contacts, said adapter having a bearing surface in free contact with said socket head and including a dielectric portion resiliently securing said adapter to said socket head; an electrical conductor cord connected to said contacts for supplying power thereto; and an elongated hollow dielectric handle for housing said socket assembly.
Claim 3
Dependent Claim
55 words
The lamp according to claim 1, wherein one of said pair of contacts is rigidly connected to said socket head and the other of said pair of contacts is pivotally coupled to said socket head for movement toward and away from said one contact to accommodate insertion of said adapter between said pair of contacts.
Claim 4
Dependent Claim
42 words
The lamp according to claim 2, wherein said adapter is made of a molded relatively resilient dielectric material having a pair of parallel surfaces adjoining and substantially transverse to said bearing surface, said pair of contacts being spaced by said parallel surfaces.
Claim 5
Dependent Claim
41 words
The lamp according to claim 3, wherein said resilient securing means includes a plurality of flexible hook-like fingers projecting transversely from said parallel surfaces for resiliently holding and urging said pair of contacts toward each other and against said parallel surfaces.
Claim 6
Dependent Claim
33 words
The lamp according to claim 4, wherein said handle includes a first set of apertures for a three-pronged plug including a ground lead and a second set of apertures for a two-pronged plug.
Claim 7
Dependent Claim
41 words
The lamp according to claim 5, wherein said adapter includes an aperture spaced from said bearing surface, a conductor strip disposed in said aperture, and a contact lead extending from said conductor strip providing a contact position for said ground lead.
Claim 8
Dependent Claim
19 words
The lamp according to claim 6, wherein said contact lead extends longitudinally from an end of said conductor strip.
Claim 9
Dependent Claim
108 words
The lamp according to claim 7, wherein each of said pair of contact elements is in the form of a flat strip having a pair of flat folded arms, each arm for receiving a flat contact prong of a plug, a major surface of each folded arm disposed adjacent and in parallel with one of said parallel surfaces of said adapter, wherein one arm from each of said pair of contacts and said aperture at one end of said adapter provide contact positions for said three-pronged plug, and the remaining arms from each of said pair of contacts provide contact positions for the contacts of said two-pronged plug.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |