US4462387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kitchen exhaust apparatus
Assignee: LDI Mfg Co Inc
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Filing: 1982-11-26
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Granted: 1984-07-31
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Expires: 2002-11-26
Abstract
Abstract A kitchen exhaust apparatus is disclosed herein which comprises an enclosure having a bottom opening with a plate mounted in the opening to define an exhaust opening, a filter mounted within the enclosure, and air inlet and exhaust means for directing air from outside the enclosure to the exhaust opening and subsequently through the filter and out of the enclosure. In another aspect there is disclosed a combination cooking unit and exhaust apparatus mounted above the cooking unit.
Inventors
- 👤 Clarke T. Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:30
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
208 words
A kitchen exhaust apparatus which comprises: an enclosure having a bottom opening: a substantially flat plate having opposed sides and opposed ends, said plate being sized smaller than the bottom opening of said enclosure; mounting means for removably mounting said plate to said enclosure to cover only a portion of the bottom opening, said mounting means comprising a rim extending about at least a portion of the bottom opening, the opposed sides of said plate resting upon the rim, said enclosure and said plate defining an exhaust opening between a portion of said enclosure and an end of said plate, the end of said plate which defines the exhaust opening being unsupported by said enclosure, said mounting means further being for positioning said plate with the end being at different distances from the portion of said enclosure to provide an exhaust opening of different sizes; filter means within said enclosure for filtering air moved through said enclosure, said filter means including a filter having a through-flow area substantially larger than the exhaust opening; air inlet means for directing air from outside of said enclosure to the exhaust opening; and air exhaust means for directing air from the exhaust opening through said filter means and out of said enclosure.
Claim 2
Dependent Claim
208 words
A kitchen exhaust apparatus which comprises: an enclosure having a bottom opening: a substantially flat plate having opposed sides and opposed ends, said plate being sized smaller than the bottom opening of said enclosure; mounting means for removably mounting said plate to said enclosure to cover only a portion of the bottom opening, said mounting means comprising a rim extending about at least a portion of the bottom opening, the opposed sides of said plate resting upon the rim, said enclosure and said plate defining an exhaust opening between a portion of said enclosure and an end of said plate, the end of said plate which defines the exhaust opening being unsupported by said enclosure, said mounting means further being for positioning said plate with the end being at different distances from the portion of said enclosure to provide an exhaust opening of different sizes; filter means within said enclosure for filtering air moved through said enclosure, said filter means including a filter having a through-flow area substantially larger than the exhaust opening; air inlet means for directing air from outside of said enclosure to the exhaust opening; and air exhaust means for directing air from the exhaust opening through said filter means and out of said enclosure.
Claim 3
Dependent Claim
34 words
The apparatus of claim 1 and which includes a flange secured to the interior of said enclosure, a portion of said plate being supported by said flange, the filter being supported by said flange.
Claim 4
Dependent Claim
18 words
The apparatus of claim 2 and which includes a grease trough secured to said enclosure below said flange.
Claim 5
Dependent Claim
21 words
The apparatus of claim 2 in which the flange is positioned on the side of said plate opposite the exhaust opening.
Claim 6
Dependent Claim
28 words
The apparatus of claim 4 and which includes a second flange secured to the top interior of said enclosure, the filter also being supported by said second flange.
Claim 7
Dependent Claim
17 words
The apparatus of claim 1 and which includes means for adjusting the size of the exhaust opening.
Claim 8
Dependent Claim
24 words
The apparatus of claim 1 in which said air inlet means includes a duct having an inlet opening located below and adjacent said plate.
Claim 9
Dependent Claim
22 words
The apparatus of claim 7 in which the inlet opening is located on the side of said plate opposite the exhaust opening.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |