US3826910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electric tube light
Assignee: Individual
•
Filing: 1971-06-07
•
Granted: 1974-07-30
•
Expires: 1991-06-07
Abstract
Abstract Dry cell batteries or battery forming materials are contained within end portions of an elongated tubular housing. The housing includes an elongated side window situated axially between the batteries. A reflector is provided along the inner wall of said tubing towards the window. A light bulb extending coaxially with the tube is positioned between the reflector and the window. The light may be secured to a support placing it generally above the writing portion of a clipboard or the like, and may be provided with a member extending from the support over the window region of the light, to serve as both a shield and a reflector for the light.
Inventors
- 👤 R Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:37
CPC Classifications
F; F21; F21V; F21V33/00; F21V33/0004; F21V33/0048
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
274 words
An elongated, slim portable electric light comprising: an elongated cylindrical tubular body having two opposite end sections containing small diameter battery means and a light section located between said end sections, with the transverse dimension of said body being small and being close in diameter to the diameter of said battery means, said light section comprising an elongated side window in the side wall of said tubular body, said side window being a generally semicylindrical cut out of an intermediate side wall portion of the body, an elongated reflector generally conforming to the interior contour of the tubular wall remaining in said light section, said reflector being generally coextensive with the remaining portion of the tubular body in said light section of the body, a light bulb supported at one end of said reflector, extending generally coaxially with said tube and overlying said reflector, with a relatively small space existing between the bulb and said reflector; an off-on switch located at one end of the tubular body, endwise outwardly of one of the battery means containing end sections of the body, said switch having two terminals; and circuit means connecting said bulb and said switch in series with said battery means, including means for receiving and holding the contact button on the light bulb in direct circuit making contact with a terminal of the battery means in one of the end sections, means extending through the light section and connecting a terminal of the battery means in the other section to the base of the light bulb, and means connecting the second terminals of the two battery means with the terminals of the switch.
Claim 2
Dependent Claim
274 words
An elongated, slim portable electric light comprising: an elongated cylindrical tubular body having two opposite end sections containing small diameter battery means and a light section located between said end sections, with the transverse dimension of said body being small and being close in diameter to the diameter of said battery means, said light section comprising an elongated side window in the side wall of said tubular body, said side window being a generally semicylindrical cut out of an intermediate side wall portion of the body, an elongated reflector generally conforming to the interior contour of the tubular wall remaining in said light section, said reflector being generally coextensive with the remaining portion of the tubular body in said light section of the body, a light bulb supported at one end of said reflector, extending generally coaxially with said tube and overlying said reflector, with a relatively small space existing between the bulb and said reflector; an off-on switch located at one end of the tubular body, endwise outwardly of one of the battery means containing end sections of the body, said switch having two terminals; and circuit means connecting said bulb and said switch in series with said battery means, including means for receiving and holding the contact button on the light bulb in direct circuit making contact with a terminal of the battery means in one of the end sections, means extending through the light section and connecting a terminal of the battery means in the other section to the base of the light bulb, and means connecting the second terminals of the two battery means with the terminals of the switch.
Claim 3
Dependent Claim
79 words
A portable electric light according to claim 1, wherein said reflector is a side wall portion of a metallic member which includes opposite end portions, with one of said end portions being adapted to receive and hold a base portion of the light bulb with the base end thereof against a terminal of one of said battery means, and wherein the opposite end portion of said reflector includes contact means for engaging a terminal of the other battery means.
Claim 4
Dependent Claim
57 words
A portable electric light according to claim 2, further comprising an insulative support for said reflector, said support having a curved side wall generally conforming to the interior curvature of the tubular body at the light section, and opposite end walls, said end walls including openings therein for respectively receiving the bulb support and the contact portion.
Claim 5
Dependent Claim
212 words
In combination, a clipboard comprising a flat panel providing a writing paper supporting surface, a clip at one end of said panel for use in clamping writing paper against said surface, and a light support extending upwardly from said panel and over a portion of the writing paper supporting surface, said light support means comprises a continuous integral portion of the writing paper supporting panel which is dihedrally related to said panel, and is centrally open generally where it meets said panel, and said paper clamp including a control lever portion projecting into said open region, an elongated light secured to said support, said light comprising an elongated tubular body directed transversely of the clip board, said light having two opposite end sections containing battery means and a light section located between said end sections, said light section comprising a side window in the side wall of said tubular body directed generally toward the writing paper supporting surface of the panel, a reflector generally conforming to the interior contour of the tube wall remaining in said light section, and a light bulb supported at one end of said reflector generally coaxially with said tube, an off-on switch, and circuit means connecting said bulb and said switch in series with said battery means.
Claim 6
Dependent Claim
212 words
In combination, a clipboard comprising a flat panel providing a writing paper supporting surface, a clip at one end of said panel for use in clamping writing paper against said surface, and a light support extending upwardly from said panel and over a portion of the writing paper supporting surface, said light support means comprises a continuous integral portion of the writing paper supporting panel which is dihedrally related to said panel, and is centrally open generally where it meets said panel, and said paper clamp including a control lever portion projecting into said open region, an elongated light secured to said support, said light comprising an elongated tubular body directed transversely of the clip board, said light having two opposite end sections containing battery means and a light section located between said end sections, said light section comprising a side window in the side wall of said tubular body directed generally toward the writing paper supporting surface of the panel, a reflector generally conforming to the interior contour of the tube wall remaining in said light section, and a light bulb supported at one end of said reflector generally coaxially with said tube, an off-on switch, and circuit means connecting said bulb and said switch in series with said battery means.
Claim 7
Dependent Claim
31 words
The combination of claim 4, wherein the switch is located at one end of the tubular body, endwise outwardly of one of the battery means containing end sections of the body.
Claim 8
Dependent Claim
34 words
The combination of claim 4, further comprising a combination shield and reflector secured to said support and extending over the light section and overhanging a portion of the paper supporting surface of the panel.
Claim 9
Dependent Claim
43 words
The combination of claim 4, wherein said light support means includes spaced apart end parts situated outwardly of said centrally open part, said end parts being formed into two cylindrical coaxial chambers in which the end sections of said light are snugly received.
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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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |