Patent US4019047A successfully refreshed from Google Patents.
US4019047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trouble lamp for mechanics
Assignee: Individual
•
Filing: 1975-11-17
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Granted: 1977-04-19
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Expires: 1995-11-17
Abstract
Abstract A trouble lamp cage is disclosed to include a magnet for attaching the device to ferrous matter so that relative rotation of the lamp about its axis vis-a-vis the magnet is permitted.
Inventors
- 👤 Oscar J. Frey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:09
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/08; F21V21/096; F21V21/0965
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
In a trouble-lamp of the type wherein a light bulb is mounted in a socket at an end of an extension cord and a protective openwork cage, non-rotatably attached to the socket, surrounds said light bulb, and light shield means is provided within said cage to preclude light emanations along one side of said light bulb, the improvement comprising: an open-centered discoidal member; an annular member, channel-shaped in cross-section rotatably interfitted to an edge of said discoidal member to permit relative rotation about a common axis of one member with respect to the other member; one of said members being fixedly secured intermediate of the length of said protective cage; and the other of said members being fixedly secured to a magnet for mounting on magnetically attractive means proximate to a work area to be illuminated.
Claim 2
Dependent Claim
136 words
In a trouble-lamp of the type wherein a light bulb is mounted in a socket at an end of an extension cord and a protective openwork cage, non-rotatably attached to the socket, surrounds said light bulb, and light shield means is provided within said cage to preclude light emanations along one side of said light bulb, the improvement comprising: an open-centered discoidal member; an annular member, channel-shaped in cross-section rotatably interfitted to an edge of said discoidal member to permit relative rotation about a common axis of one member with respect to the other member; one of said members being fixedly secured intermediate of the length of said protective cage; and the other of said members being fixedly secured to a magnet for mounting on magnetically attractive means proximate to a work area to be illuminated.
Claim 3
Dependent Claim
22 words
The structure according to claim 1 in which said annular member encircles and rotates about the outer edge of said discoidal member.
Claim 4
Dependent Claim
32 words
The structure according to claim 2 in which the discoidal member encircles and is non-rotatably secured to said protective cage in its mid-section and said magnet is attached to said annular member.
Claim 5
Dependent Claim
17 words
The structure according to claim 1 in which the annular member is encircled by said discoidal member.
Claim 6
Dependent Claim
32 words
The structure according to claim 4 in which said annular member encircles and is non-rotatably secured to said protective cage in its mid-section and said magnet is attached to said discoidal member.
Claim 7
Dependent Claim
124 words
An electrical trouble-lamp of the common type used by mechanics and craftsmen, comprising: an extension cord having a socketed light bulb at one operating end; an openwork protective cage non-rotatably secured to the bulb socket and extending therefrom in relation to said bulb; light shield means within said cage located to preclude light emanations along one side of said bulb; a first annular member secured to and encircling said cage; a second annular member rotatably coupled with said first annular member whereby said cage, socketed light bulb and light shield means may be rotated coaxial of said members; and a magnet secured to the periphery of said second annular member for attachment to magnetically attractive means proximate to a work area to be illuminated.
Claim 8
Dependent Claim
124 words
An electrical trouble-lamp of the common type used by mechanics and craftsmen, comprising: an extension cord having a socketed light bulb at one operating end; an openwork protective cage non-rotatably secured to the bulb socket and extending therefrom in relation to said bulb; light shield means within said cage located to preclude light emanations along one side of said bulb; a first annular member secured to and encircling said cage; a second annular member rotatably coupled with said first annular member whereby said cage, socketed light bulb and light shield means may be rotated coaxial of said members; and a magnet secured to the periphery of said second annular member for attachment to magnetically attractive means proximate to a work area to be illuminated.
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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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |