Furniture having air control functions
Patent 5904755 Issued on May 18, 1999. Estimated Expiration Date: 
September 13, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 13, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3516232 3797205 3890126 Method and device for extracting contaminated air by suction Smoke-free work area Apparatus and method for eliminating cigarette sidestream smoke System for purifying air in a room Air purifying side table Smoke processor Patent #: 5591242 InventorsAssigneeApplicationNo. 713786 filed on 09/13/1996US Classes:96/55, And serially arranged nonelectrical separator55/337, Cyclone or centrifugal whirl type deflector55/385.1, COMBINED OR CONVERTIBLE55/459.1, Tangential gas inlet opening in casing96/61Spiralling inflow, centrifugal, or whirl generating surface meansExaminersPrimary: Chiesa, Richard L.Attorney, Agent or FirmInternational ClassB03C 3/0/11AbstractA body furniture is provided having one or more air exhaust ports and a built-in air fan. A top plate having one or more air suction port is positioned on the furniture body, and a tornado-based suction unit is removably placed on the one or more of the air suction ports. The tornado-based suction unit includes a cylinder having a window formed through a peripheral wall thereof, and a suction hole formed through at least one of end surfaces of the cylinder connected to a suction side of the air fan. An artificial tornado is generated within the cylinder and collects contaminated air such as the smoke of cigarettes. The collected contaminated air is cleaned. Minus ions or fragrance may be supplied to air sucked from the suction hole to fill a space around the body.Field of SearchCyclone or centrifugal whirl type deflectorInvolving ash tray COMBINED OR CONVERTIBLE Tangential gas inlet opening in casing With tangential gas outlet Filter and/or absorber Spiral passage Air Interior surface causes particular flow characteristic Plural diverse elements And devices for other use Including specific air distributor (e.g., register, etc.) And serially arranged nonelectrical separator Precedent nonelectrical separator Spiralling inflow, centrifugal, or whirl generating surface means Separator is single porous filter | |
