US3711702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy duty floodlight
Assignee: Hubbell Inc
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Filing: 1970-11-02
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Granted: 1973-01-16
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Expires: 1990-11-02
Abstract
Abstract A heavy duty floodlight having an outer housing or cowling and a separate inner housing or reflector with a lens cover adapted to tightly seal the inner housing. The cowling is provided with slots in a rear inwardly extending flange, and air scoops at the front edge extending radially beyond the frame of the lens cover to permit air to circulate through the space formed between the reflector and the cowling and the surrounding air. This circulation helps to cool the floodlight and the lamp mounted therein and prevents the building up of heat between the housings regardless of the orientation of the floodlight. The reflector and the cowling may be complementarily shaped to provide venturi sections to aid in the circulation of air therebetween.
Inventors
- 👤 T Adra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:52
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/502; F21V29/505; F21V29/70; F21V29/74; F21V17/00; F21V17/10; F21V17/20; F21V21/00; F21V21/14; F21V21/30; F21W; F21W2131/00; F21W2131/10; F21W2131/105
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
142 words
A heavy duty floodlight comprising: a circuit element housing; a reflector having a front end and a rear end mounted to said circuit element housing; a cowling having a front end and a rear end mounted to said housing surrounding said reflector and defining rear openings at said rear end and front openings at said front end; said cowling including a plurality of depressed portions which engage said front end of said reflector, said front openings being defined by spaces between said front end of said cowling and said front end of said reflector interposed between said depressed portions; and said reflector and said cowling being dimensioned so as to provide an air space therebetween communicating with said front and rear openings to permit air to circulate therethrough, and being shaped to form at least one venturi section within said air space.
Claim 2
Dependent Claim
142 words
A heavy duty floodlight comprising: a circuit element housing; a reflector having a front end and a rear end mounted to said circuit element housing; a cowling having a front end and a rear end mounted to said housing surrounding said reflector and defining rear openings at said rear end and front openings at said front end; said cowling including a plurality of depressed portions which engage said front end of said reflector, said front openings being defined by spaces between said front end of said cowling and said front end of said reflector interposed between said depressed portions; and said reflector and said cowling being dimensioned so as to provide an air space therebetween communicating with said front and rear openings to permit air to circulate therethrough, and being shaped to form at least one venturi section within said air space.
Claim 3
Dependent Claim
54 words
The floodlight of claim 1 further including cover means for sealing said reflector, said cover means including a hinge connected to said cowling at one of said depressed portions and clamp means adapted to engage said cowling at another of said depressed portions for urging said cover means into sealing engagement with said reflector.
Claim 4
Dependent Claim
93 words
The floodlight of claim 2 wherein said reflector includes a necked-in portion between said front and rear ends thereof and said cowling includes a convex ridge between said front and rear ends thereof radially opposite from said necked-in portion to form an enlarged portion of said air space with smaller portions on either side, said enlarged portion and said smaller portions cooperating to provide two venturi sections within said air space, and wherein said cowling includes an inwardly extending flange at said rear end thereof, said rear openings being defined by said flange.
Claim 5
Dependent Claim
153 words
A heavy duty floodlight comprising: a circuit element housing; a reflector having a front end and a rear end mounted to said circuit element housing; a cowling having a front end and a rear end mounted to said circuit element housing surrounding said reflector and defining rear openings at said rear end and front openings at said front end; said reflector and said cowling being dimensioned so as to provide an air space therebetween communicating with said front and rear openings to permit air to circulate therethrough, and said reflector including a necked-in portion between said front and rear ends thereof and said cowling including a convex ridge between said front and rear ends thereof radially opposite from said necked-in portion to form an enlarged portion of said air space with smaller portions on either side, said enlarged portion and said smaller portions cooperating to provide two venturi sections within said air space.
Claim 6
Dependent Claim
153 words
A heavy duty floodlight comprising: a circuit element housing; a reflector having a front end and a rear end mounted to said circuit element housing; a cowling having a front end and a rear end mounted to said circuit element housing surrounding said reflector and defining rear openings at said rear end and front openings at said front end; said reflector and said cowling being dimensioned so as to provide an air space therebetween communicating with said front and rear openings to permit air to circulate therethrough, and said reflector including a necked-in portion between said front and rear ends thereof and said cowling including a convex ridge between said front and rear ends thereof radially opposite from said necked-in portion to form an enlarged portion of said air space with smaller portions on either side, said enlarged portion and said smaller portions cooperating to provide two venturi sections within said air space.
Claim 7
Dependent Claim
112 words
A heavy duty floodlight comprising: a circuit element housing; a reflector having a front end and a rear end mounted to said circuit element housing; a cowling having a front end and a rear end mounted to said circuit element housing surrounding said reflector, and including an inwardly extending flange at said rear end, said cowling defining rear openings in said flange and front openings at said front end; and said reflector and said cowling being dimensioned so as to provide an air space therebetween communicating with said front and rear Openings to permit air to circulate therethrough, and being shaped to form at least one venturi section within said air space.
Claim 8
Dependent Claim
112 words
A heavy duty floodlight comprising: a circuit element housing; a reflector having a front end and a rear end mounted to said circuit element housing; a cowling having a front end and a rear end mounted to said circuit element housing surrounding said reflector, and including an inwardly extending flange at said rear end, said cowling defining rear openings in said flange and front openings at said front end; and said reflector and said cowling being dimensioned so as to provide an air space therebetween communicating with said front and rear Openings to permit air to circulate therethrough, and being shaped to form at least one venturi section within said air space.
References Cited (Backward Citations)
US2007489A
Cited
US2878371A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |