US4800475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable electric light
Assignee: Cool Lux Lighting Industries Inc
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Filing: 1987-10-27
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Granted: 1989-01-24
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Expires: 2007-10-27
Abstract
Abstract A portable high energy light having a U-shaped housing and vented cover. The housing has a front section containing light treatment parts and a back section containing a bulb assembly. The front section is cooled by an elongated slot directing ambient air between the light treatment parts and bulb assembly. The back section is cooled by an enlarged opening in the housing bottom wall located directly below the bulb assembly. A guard flange extending into the opening helps guide ambient air directly past heat generating portions of the bulb assembly.
Inventors
- 👤 George N. Panagiotou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:49
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21V29/74; F21V29/745; F21V29/83; F21V17/00; F21V17/10; F21V17/107; F21V29/76; F21V19/00; F21V19/04; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
143 words
In a portable lighting device having a bulb assembly mounted within a housing defined by a bottom wall with opposing sidewalls and a back wall extending across said sidewalls, said housing having an open front end and an open top overlaid by a cover means, wherein the improvement comprises: an enlarged opening in said bottom wall beneath said bulb assembly covering at least one fourth of the area of said bottom wall which is beneath said bulb assembly, said opening having opposing side edges; a guard flange extending into said opening having peripheral edges spaced-apart from said side edges to define passages for air flow to said bulb assembly; an elongated slot in said bottom wall offset from said front end; and, said cover means including a vent cover having air vent openings located at least above said enlarged opening and elongated slot.
Claim 2
Dependent Claim
143 words
In a portable lighting device having a bulb assembly mounted within a housing defined by a bottom wall with opposing sidewalls and a back wall extending across said sidewalls, said housing having an open front end and an open top overlaid by a cover means, wherein the improvement comprises: an enlarged opening in said bottom wall beneath said bulb assembly covering at least one fourth of the area of said bottom wall which is beneath said bulb assembly, said opening having opposing side edges; a guard flange extending into said opening having peripheral edges spaced-apart from said side edges to define passages for air flow to said bulb assembly; an elongated slot in said bottom wall offset from said front end; and, said cover means including a vent cover having air vent openings located at least above said enlarged opening and elongated slot.
Claim 3
Dependent Claim
23 words
The device of claim 1 including light treatment means positioned in said housing forward of the bulb assembly and adjacent said elongated slot.
Claim 4
Dependent Claim
31 words
The device of claim 2 wherein said light treatment means includes engagement means for a member selected from the group consisting of lens, shades, light filter, light difusser and light polarizer.
Claim 5
Dependent Claim
19 words
The device of claim 2 wherein said cover means includes a protective cover located above said light treatment means.
Claim 6
Dependent Claim
22 words
The device of claim 1 wherein said bottom wall has a back edge and said enlarged opening extends from said back edge.
Claim 7
Dependent Claim
18 words
The device of claim 5 wherein said guard flange extends from said back wall into said enlarged opening.
Claim 8
Dependent Claim
15 words
The device of claim 6 wherein said guard flange is coextensive with said enlarged opening.
Claim 9
Dependent Claim
15 words
The device of claim 1 wherein said opposing side edges include upwardly inclined air deflectors.
Claim 10
Dependent Claim
15 words
The device of claim 1 wherein said guard flange is provided with a vent orifice.
Claim 11
Dependent Claim
15 words
The device of claim 1 wherein said elongated slot includes an upwardly inclined air guide.
Claim 12
Dependent Claim
110 words
In a portable lighting device having a housing with a front section containing a light treatment means and a back section containing a bulb assembly wherein said housing includes a bottom wall having an enlarged opening in said back section and an elongated slot in said front section with a vented cover overlying at least said back section, said enlarged opening covering at least one fourth of the area of said bottom wall corresponding to said back section, said opening having opposing side edges; and, a guard flange extending into said opening having peripheral edges spaced-apart from said side edges to define passages for air flow to said back section.
Claim 13
Dependent Claim
110 words
In a portable lighting device having a housing with a front section containing a light treatment means and a back section containing a bulb assembly wherein said housing includes a bottom wall having an enlarged opening in said back section and an elongated slot in said front section with a vented cover overlying at least said back section, said enlarged opening covering at least one fourth of the area of said bottom wall corresponding to said back section, said opening having opposing side edges; and, a guard flange extending into said opening having peripheral edges spaced-apart from said side edges to define passages for air flow to said back section.
Claim 14
Dependent Claim
13 words
The device of claim 11 including a protective cover overlying said front section.
Claim 15
Dependent Claim
31 words
The device of claim 11 wherein said bottom wall includes a back edge and said enlarged opening comprises a cut-out portion of said back edge extending inwardly beneath said bulb assembly.
Claim 16
Dependent Claim
25 words
The device of claim 13 wherein said housing includes a back wall and said guard flange extends from said back wall into said enlarged opening.
Claim 17
Dependent Claim
14 words
The device of claim 13 wherein said side edges include upwardly inclined air deflectors.
Claim 18
Dependent Claim
15 words
The device of claim 14 wherein said guard flange is coextensive with said enlarged opening.
Claim 19
Dependent Claim
27 words
The device of claim 11 wherein said light treatment means includes a light treatment member and an engagement means for releasably connecting said member to said housing.
Claim 20
Dependent Claim
26 words
The device of claim 17 wherein said light treatment member is selected from the group consisting of lens, shade, light filter, light diffuser and light polarizer.
Claim 21
Dependent Claim
23 words
The device of claim 18 wherein said elongated slot extends across said bottom wall between said bulb assembly and said light treatment member.
Claim 22
Dependent Claim
22 words
The device of claim 16 wherein said guard flange extends from the bottom of said back wall and includes a vent orifice.
References Cited (Backward Citations)
US3126785A
Cited
US2080120A
Cited
US3140053A
Cited
US3461282A
Cited
US3541492A
Cited
US3593019A
Cited
US3639751A
Cited
US3689761A
Cited
US3936686A
Cited
US4703404A
Cited
US4692844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-01-24 | 1992-07-25 | 1993-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-24 | 1996-07-25 | 1997-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-24 | 2000-07-25 | 2001-01-24 | $7700.00 | Window Closed / Lapsed |