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US4524409A Expired / Lapsed US ⏱️ 0.0 years remaining

Flashlight

Assignee: Centor Inc
•
Filing: 1984-03-21
•
Granted: 1985-06-18
•
Expires: 2004-03-21
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Abstract

Abstract A compact, easily assembled flashlight is disclosed in which the casing for the flashlight is made of two identically molded plastic halves in which the molded halves are provided with cradles for a pair of batteries, webs for retaining conductive clips and a web adjacent the bottom for holding a spring contact in position beneath the batteries when assembled inside the casing. A light bulb with a pair of external wire leads protrudes through half of a semi-circular opening in each of the halves such that upon assembly of the halves of the casing in overlying position the bulb extends through a circular opening at one end of the casing. The other end of the casing is formed with a flat web having a hole therein. A pair of metallic switch members, which also are integrally formed with spring members for contacting the lower end of the batteries, have contact elements, spaced apart within the casing between the position of the two batteries. The casing is flexible and, upon squeezing or compressing the sides of the casing, the two switch members will contact each other, completing the circuit from the batteries to the light bulb. The flashlight is essentially a disposable item in which, after assembly, the two halves of the casing are welded together to form a sealed unit.

Inventors

  • 👤 Louis Yakubek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 04:47
CPC Classifications
F; F21; F21L; F21L2/00

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 98 words
In a battery operated flashlight wherein an end portion of a bulb extends through one end of an elongated casing which supports the bulb, a pair of batteries in side-by side, spaced relationship and a circuit which is completed between the batteries and the bulb by compressing the sides of the casing, the improvement wherein said casing is formed of two identical elongated, semi-eliptical, molded plastic halves, marginally sealed together in face-to-face relationship with the end portion of the bulb extending through an opening formed by matching semi-circular walls at the margin of one end of the halves.
Claim 2
Dependent Claim 98 words
In a battery operated flashlight wherein an end portion of a bulb extends through one end of an elongated casing which supports the bulb, a pair of batteries in side-by side, spaced relationship and a circuit which is completed between the batteries and the bulb by compressing the sides of the casing, the improvement wherein said casing is formed of two identical elongated, semi-eliptical, molded plastic halves, marginally sealed together in face-to-face relationship with the end portion of the bulb extending through an opening formed by matching semi-circular walls at the margin of one end of the halves.
Claim 3
Dependent Claim 30 words
The flashlight of claim 1 wherein each case half includes internally molded, integral, cradle means for supporting the pair of batteries in side-by-side, spaced relationship when said casing is sealed.
Claim 4
Dependent Claim 64 words
The flashlight of claim 1 wherein said bulb has a pair of external leads, a pair of conductive clip members, each clip member frictionally engaging a respective lead and being electrically isolated from each other, and means integrally formed in said case for supporting each clip in contact with adjacent ends of a pair of batteries held in said case in spaced-apart parallel relationship.
Claim 5
Dependent Claim 82 words
The flashlight of claim 1 wherein said bulb is electrically connected to one end of each batter, a pair of identically formed, spring contact members in said case engaging the opposite ends of said batteries, said contact members being supported and electrically isolated from each other by the case halves with opposed portions of said contacts, in the area between the batteries, lying adjacent the flexible side walls of the casing and being engageable upon compressing the side walls a predetermined amount.
Claim 6
Dependent Claim 22 words
The flashlight of claim 1 further including an integrally molded web portion extending from the end of said casing opposite said bulb.
Claim 7
Dependent Claim 23 words
The flashlight of claim 5 wherein said integrally molded web portion is formed in both casing halves and sealed together as a unit.
Claim 8
Dependent Claim 23 words
The flashlight of claim 6 wherein said extending web portions are provided with a hole therethrough adapted to receive a flexible support member.
Claim 9
Dependent Claim 77 words
The flashlight of claim 3 wherein said clips are generally U-shaped and said means for supporting said clips comprising a pair of horizontal spaced-apart ribs extending at right angles to and formed integral with the side wall of each casing half, with the legs of the U embracing the ribs, wherein the ribs on the casing half that is opposed to the clips, engages the bottom of the U clips when assembled with the other casing half.

References Cited (Backward Citations)

US1122424A Cited
US1226727A Cited
US1492743A Cited
US1588464A Cited
US1588428A Cited
US2272040A Cited
US2651710A Cited
US4210953A Cited
US4122510A Cited
US4419718A Cited
US4443833A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-06-17 1988-12-17 1989-06-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-06-17 1992-12-17 1993-06-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-06-17 1996-12-17 1997-06-18 $7700.00 Window Closed / Lapsed

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