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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7357823 | Disposable filter within a removable chamber A vacuum cleaner includes a housing, a nozzle inlet, a suction generator and a dirt cup. The dirt cup includes a dirt collection chamber, an inlet and an open end. Additionally, the vacuum cleaner includes a filter assembly. The filter assembly includes a filter hou... | 04/15/2008 |
| 7211123 | Apparatus for venting a transmission Device for the ventilation of a transmission case (11) that is normally intended to hold liquid lubricant for transmission components and includes a residual internal volume of air inside the transmission case that is connected to the atmospheric pressure by ... | 05/01/2007 |
| 7163626 | Device for treating a gas/liquid mixture The present invention relates to a device for treating a gas/liquid mixture, comprising: an inlet opening for the mixture; an outlet for the mixture located downstream; rotating means arranged in the tube for setting the mixture into rotating movement; one or more o... | 01/16/2007 |
| 6994738 | Snow filter A snow filter for an airplane cabin air supply system is provided with a coned inlet screen which allows some air to pass through and some snow to be retained. The coned configuration diverts much of the air and snow toward a downstream conical retaining and collect... | 02/07/2006 |
| 6340375 | Air cleaner; method and use An improved air cleaner arrangement is provided. The preferred air cleaner is wedge shaped, and is constructed as a "no-housing" arrangement. The arrangement includes first and second end caps, with pleated media extending therebetween. The preferred arra... | 01/22/2002 |
| 6132495 | Gas purification process This invention describes a process for the purification of a refrigerant gas by feeding the refrigerant through at least one venturi cell. In one configuration, the venturi will have a first conical segment with an open base through which said refrigerant... | 10/17/2000 |
| 6059851 | Air cleaner; method and use An improved air cleaner arrangement is provided. The preferred air cleaner is wedge shaped, and is constructed as a "no-housing" arrangement. The arrangement includes first and second end caps, with pleated media extending therebetween. The preferred arra... | 05/09/2000 |
| 5972059 | Air filter assembly A filter assembly for use in filtering air in a dust collecting system has a pleated conical filter element which is mounted within a pleated cylindrical filter element. The cylindrical filter element is attached at one end to a base member and at the oth... | 10/26/1999 |
| 5958094 | Cyclone collector and cyclone classifier A cyclone, in particular a cyclone collector and a cyclone classifier having an arrangement disturbing the gas-particle flow in the inlet area of the inlet casing or in the cylindrical part of the housing. This flow disturber effects a deflection and disp... | 09/28/1999 |
| 5948145 | Gas purification process This invention describes a process for the purification of a refrigerant gas by feeding the refrigerant through at least one venturi cell. In one configuration, the venturi will have a first conical segment with an open base through which said refrigerant... | 09/07/1999 |
| 5868808 | Velocity stack filter A carburetor air intake velocity stack engagable with a carburetor inlet, has a cylindrical throat section having first and second ends. The first end is adapted to be coupled to the carburetor, while the second end is open to the air. A shaped, mesh filt... | 02/09/1999 |
| 5743925 | Compact cyclone filter train for radiological and hazardous environments A compact cyclone filter train for the removal of hazardous and radiologi particles from a gaseous fluid medium which permits a small cyclone separator to be used in a very small space envelope due to the arrangement of the filter housing adjacent to the... | 04/28/1998 |
| 5685887 | Filter element A filter element is constructed such that a filter material having a corrugated sectional surface is formed in the shape of a cylindrical housing, and an upper opening portion of the cylindrical housing is kept closed, and an lower opening portion is conn... | 11/11/1997 |
| 5591243 | Liquid trap for compressed air A device for separating liquid particles from compressed air transported therthrough, to protect machine parts connected thereto. The device is simple to manufacture, easy to maintain and can be made of low-cost materials such as injection molded plastics... | 01/07/1997 |
| 5549724 | Filter element of air cleaner unit An air filter having a tapered cylindrical filter member is attached to an engine air intake at its larger end and has an inverted frusto-conical member inside the opposing smaller end for reducing turbulent air flow through the air filter. The inverted f... | 08/27/1996 |
| 5522909 | Air filter device An air filter device. The device includes a flat, closed top and an axially aligned open base larger in diameter than the top. Frusto conical filter media extends between the top and the base, the filter media having an axis aligned with the top and the b... | 06/04/1996 |
| 5458666 | Filter element of air cleaner unit There is provided a filter element of an air cleaner unit of an open element type which prevents turbulent flow from arising to lower the air suction sound and avoid the loss of sucked air by the turbulent flow. In a filter element in which a major diamet... | 10/17/1995 |
| 4606743 | Two stage engine air breather filter An air filter for removing particulate matter from an airstream by cyclonic action and having replaceable primary and secondary filter elements.... | 08/19/1986 |
| 4509613 | Motorcycle air cleaner arrangement A motorcycle is provided with an air cleaner mounted beneath the tank and between downwardly extending portions thereof, between the frame members. The air cleaner is provided with a window for viewing the element and is inspected by pivotting the tank up... | 04/09/1985 |
| 4460390 | Two stage air cleaner with side-by-side elements A two-stage air cleaner with side-by-side elements. The cleaner has a first element (30), a second element (32) which itself may have a safety element (35). The first element (30) is preferably a conical inertial separator having a scavenge outlet (38). T... | 07/17/1984 |
| 4236903 | Air cleaner A air cleaner, comprising a container through which an elongated inlet tube is arranged to pass through a separating means in the form of piled discs having passages between them, said inlet tube being arranged with an outlet opening inside the container,... | 12/02/1980 |
| 4157902 | Air cleaner system for over-highway trucks An improved air cleaner designed for insertion in the air intake conduits of over-the-road vehicles, to have the same diameter as the conduits, and to be readily replaceable as a unit. The invention particularly includes an air-permeable member which tape... | 06/12/1979 |
