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US3758029A Expired / Lapsed US ⏱️ 0.0 years remaining

Method and apparatus for air-conditioning

Assignee: Individual
•
Filing: 1972-06-30
•
Granted: 1973-09-11
•
Expires: 1992-06-30
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Abstract

Abstract When air is introduced for heating, cooling or ventilation of rooms in building, for example in a hotel located in a polluted air district, oxygen in an amount calculated to meet the requirements of the number of inmates is continuously supplied to the room together with air through an oxygen supply passage opening into the air inlet of the room. At the same time negative-ions generated by a negative-ion generator installed at the air inlet are supplied to the air-oxygen mixture. In the event of a fire occurring in the building, the oxygen supply is automatically cut off. In the rooms of a hotel located in polluted air districts, such as urban areas or industrial zones, a salubrious pleasant air can be supplied, with oxygen and negative-ions present in the air kept at an optimum level and at the same time, the aggravation of fire by oxygen can be prevented.

Inventors

  • 👤 T Yoshida

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 21:05
CPC Classifications
F; F24; F24F; F24F8/00; F24F8/10; F24F8/192; A; A62; A62C; A62C2/00; A62C2/06; Y; Y02; Y02A; Y02A50/00; Y02A50/20

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 82 words
Air-conditioning apparatus for rooms comprising; a heatexchanger and an electric fan positioned at the air inlet of a room of a building; an electromagnetic valve through which an oxygen supply passage is opened; a negative-ion generator positioned deeper within said inlet than the oxygen supply passage; the switches of said electromagnetic valve, said ion generator and the motor to drive said fan being interconnected with each other; and fire-sensors whose output terminal is connected to said valve of the oxygen supply passage.
Claim 2
Dependent Claim 82 words
Air-conditioning apparatus for rooms comprising; a heatexchanger and an electric fan positioned at the air inlet of a room of a building; an electromagnetic valve through which an oxygen supply passage is opened; a negative-ion generator positioned deeper within said inlet than the oxygen supply passage; the switches of said electromagnetic valve, said ion generator and the motor to drive said fan being interconnected with each other; and fire-sensors whose output terminal is connected to said valve of the oxygen supply passage.
Claim 3
Dependent Claim 101 words
Air-conditioning method for rooms of buildings located in a polluted-air area, characterized by introdusing oxygen in an amount matching the requirements of continuously the number of inmates of each room through oxygen supply passage opening into the air inlet of each room, said oxygen being introduced together with the air introduced for heating, cooling or ventilation; and at the same time releasing negative-ions from the negative-ion generator positioned within the air inlet at a greater depth than the oxygen supply passage; and in case of a fire breaking out in the hotel, the oxygen supply being cut off by automatic control.
Claim 4
Dependent Claim 101 words
Air-conditioning method for rooms of buildings located in a polluted-air area, characterized by introdusing oxygen in an amount matching the requirements of continuously the number of inmates of each room through oxygen supply passage opening into the air inlet of each room, said oxygen being introduced together with the air introduced for heating, cooling or ventilation; and at the same time releasing negative-ions from the negative-ion generator positioned within the air inlet at a greater depth than the oxygen supply passage; and in case of a fire breaking out in the hotel, the oxygen supply being cut off by automatic control.

References Cited (Backward Citations)

US1744890A Cited
US3043977A Cited
US3311323A Cited
US3492987A Cited
US3680557A Cited
US3654534A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-10 1977-03-12 1977-09-11 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-10 1981-03-12 1981-09-11 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-10 1985-03-12 1985-09-11 $7700.00 Window Closed / Lapsed

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