US3249037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable ventilating hood
Assignee: HOME METAL PRODUCTS Co
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Filing: 1964-04-20
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Granted: 1966-05-03
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Expires: 1984-04-20
Abstract
No abstract record available.
Inventors
- 👤 James E Stalker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:13
CPC Classifications
F; F24; F24C; F24C15/00; F24C15/20; F24C15/2021; F24C15/2078; F24C15/2092; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0405; Y; Y10; Y10S; Y10S55/00; Y10S55/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A VENTILATING DEVICE WHICH COMPRISES: (A) A FIVE-SIDED CASING HAVING A RECTANGULARLY OPEN FRONT FOR OPERATION ABOVE A COOKING AREA, (B) FAN MEANS SUPPORTED IN SAID CASING FOR DISCHARGE OF AIR THROUGH THE REAR PORTION OF SAID CASING, (C) A FILTER DRAWER IN SAID CASING HAVING A FRONT PANEL WITH A PERFORATE ZONE THEREIN, (D) A POWER CONTROL MEANS FOR SAID FAN MEANS INCLUDING A CONTROL ELEMENT IN SAID DRAWER ADJACENT TO SAID PERFORATE ZONE TO DRIVE SAID FAN MEANS AT A LOW SPEED WHEN THE TEMPERATURE OF CONVECTION CURRENT FLOWING THROUGH SAID PERFORATE ZONE EXCEEDS A PREDETERMINED LEVEL, AND (E) A SEPARATE CIRCUIT RESPONSIVE TO THE OPENING OF SAID DRAWER TO DRIVE SAID FAN AT HIGH SPEED.
Claim 2
Dependent Claim
118 words
A VENTILATING DEVICE WHICH COMPRISES: (A) A FIVE-SIDED CASING HAVING A RECTANGULARLY OPEN FRONT FOR OPERATION ABOVE A COOKING AREA, (B) FAN MEANS SUPPORTED IN SAID CASING FOR DISCHARGE OF AIR THROUGH THE REAR PORTION OF SAID CASING, (C) A FILTER DRAWER IN SAID CASING HAVING A FRONT PANEL WITH A PERFORATE ZONE THEREIN, (D) A POWER CONTROL MEANS FOR SAID FAN MEANS INCLUDING A CONTROL ELEMENT IN SAID DRAWER ADJACENT TO SAID PERFORATE ZONE TO DRIVE SAID FAN MEANS AT A LOW SPEED WHEN THE TEMPERATURE OF CONVECTION CURRENT FLOWING THROUGH SAID PERFORATE ZONE EXCEEDS A PREDETERMINED LEVEL, AND (E) A SEPARATE CIRCUIT RESPONSIVE TO THE OPENING OF SAID DRAWER TO DRIVE SAID FAN AT HIGH SPEED.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |