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US4092706A Expired / Lapsed US ⏱️ 0.0 years remaining

Portable fluorescent light

Assignee: Individual
•
Filing: 1977-01-14
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Granted: 1978-05-30
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Expires: 1997-01-14
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Abstract

Abstract A portable fluorescent light utilizing a fluorescent tube mounted in an elongated transparent tubular plastic housing with protective end caps. A power cord with associated ballast is used to connect the unit to a power source. Sockets for the fluorescent lamp are mounted on special socket supports inserted in each end of the housing. The socket supports are each in the form of an elongated metal strip bent into a four-legged generally rectangular shape. Two parallel side legs are connected by screws to the tubular housing and the inner leg, which is connected to only one of the side legs, carries its respective socket and is adapted to flex about one end between a relaxed inwardly extending position and a flexed operating position generally perpendicular to the side legs in order to apply an advantageous endwise holding force to tightly retain the fluorescent lamp between the two sockets and also to accommodate thermal expansion and contraction of the tubular plastic housing to which the socket supports are mounted caused by heat from the lamp and environmental temperature variations.

Inventors

  • 👤 Gary W. Vest

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 04:24
CPC Classifications
F; F21; F21L; F21L14/00; F21L14/02; F21L14/026

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 208 words
In a portable fluorescent light comprising an elongated transparent tubular housing subject to elongation due to thermal expansion, a fluorescent lamp positioned in said housing, and electrical circuit means, including two fluorescent lamp sockets, for energizing said lamp, the improvement which comprises: a pair of socket supports for mounting said sockets to said housing, each socket support comprising an elongated strip of metal bent into a four-legged, generally rectangular shape with two parallel side legs connected at opposed locations to said housing, an outer leg connected between said side legs and a flexible resilient inner leg that supports the respective socket, said inner leg being connected to one of said side legs and being adapted to flex in a direction parallel to the axis of said fluorescent lamp between an inwardly extending relaxed position and a flexed retracted operating position generally perpendicular to said side legs, whereby when said lamp is connected to said sockets and positioned in said tube, said respective inner legs are flexed in a direction parallel to the axis of said fluorescent lamp to their operating position to apply a tight holding force to said lamp and to accommodate elongation due to thermal expansion of said housing to which the socket supports are attached.
Claim 2
Dependent Claim 208 words
In a portable fluorescent light comprising an elongated transparent tubular housing subject to elongation due to thermal expansion, a fluorescent lamp positioned in said housing, and electrical circuit means, including two fluorescent lamp sockets, for energizing said lamp, the improvement which comprises: a pair of socket supports for mounting said sockets to said housing, each socket support comprising an elongated strip of metal bent into a four-legged, generally rectangular shape with two parallel side legs connected at opposed locations to said housing, an outer leg connected between said side legs and a flexible resilient inner leg that supports the respective socket, said inner leg being connected to one of said side legs and being adapted to flex in a direction parallel to the axis of said fluorescent lamp between an inwardly extending relaxed position and a flexed retracted operating position generally perpendicular to said side legs, whereby when said lamp is connected to said sockets and positioned in said tube, said respective inner legs are flexed in a direction parallel to the axis of said fluorescent lamp to their operating position to apply a tight holding force to said lamp and to accommodate elongation due to thermal expansion of said housing to which the socket supports are attached.

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) 1981-05-29 1981-11-28 1982-05-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-05-29 1985-11-28 1986-05-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-05-29 1989-11-28 1990-05-30 $7700.00 Window Closed / Lapsed

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