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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7611555 | Vacuum cleaner bag A vacuum cleaner bag includes a bottom part having a substantially rectangular base section. A projecting section is disposed proximate to at least one side of the base section. The projecting section, when folded up for the storage position, rests on the base secti... | 11/03/2009 |
| 7166237 | Pitch-based carbon foam heat sink with phase change material A process for producing a carbon foam heat sink is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distributi... | 01/23/2007 |
| 7157019 | Pitch-based carbon foam heat sink with phase change material A process for producing a carbon foam heat sink is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distributi... | 01/02/2007 |
| 7147214 | Humidifier for fuel cell using high conductivity carbon foam A method and apparatus of supplying humid air to a fuel cell is disclosed. The extremely high thermal conductivity of some graphite foams lends itself to enhance significantly the ability to humidify supply air for a fuel cell. By utilizing a high conductivity pitch... | 12/12/2006 |
| 7137169 | Vacuum cleaner with cleaning pad A vacuum cleaner has a suction nozzle, a housing connected to the suction nozzle and a suction fan and motor assembly mounted to the housing. A dirt collecting receptacle is mounted to the housing and is in communication with the suction nozzle and suction fan and m... | 11/21/2006 |
| 7014151 | Pitch-based carbon foam heat sink with phase change material A process for producing a carbon foam heat sink is disclosed which obviates the need for conventional oxidative stabilization. The process employs mesophase or isotropic pitch and a simplified process using a single mold. The foam has a relatively uniform distributi... | 03/21/2006 |
| 6949188 | Filter assembly having improved sealing features A filter assembly including a filter housing defining an interior chamber with an open end, a filter disposed within the interior chamber, and a cover removably positioned over the open end to enclose the interior chamber. The filter housing defines an axially-facin... | 09/27/2005 |
| 6908550 | Filter bag A filter bag for a pool cleaning device includes a bag structure, formed of nylon mesh material, and a discharge opening, formed by a zipper. The zipper allows for temporary access to the interior chamber of the bag by opening the zipper. ... | 06/21/2005 |
| 6802879 | Vacuum collection bag and method of operation The present invention is an improved vacuum collection bag for vacuum cleaners and other appliances. By employing an impermeable bag and an air-permeable particle separator together with a tight seal against a vacuum system dirt tube in place of a conventional paper... | 10/12/2004 |
| 6786947 | Washable cloth vacuum cleaner filter bag having a resealable opening for emptying vacuumed debris A washable cloth vacuum cleaner filter bag for use on wet/dry vacuum cleaners and in central vacuum cleaner systems includes a first opening for receiving vacuumed debris, means for attaching the first opening to the inlet of the vacuum cleaner or system, and a seco... | 09/07/2004 |
| 6749654 | Dust filtration frame and disposal cover A dust collection system includes a housing defining an inlet and an outlet. A fan is situated within the housing to move air from the inlet to the outlet, and a filter is removably attached to the housing to collect dust entering the housing. To prevent dust from e... | 06/15/2004 |
| 6746501 | Vacuum bag collar with rotatable closure A collar for a vacuum cleaner bag having a user operated closure, the collar being formed from a blank of relatively rigid material and folded to define first and second full outer panels and a partial inner panel, the partial inner panel being adhesively secured to... | 06/08/2004 |
| 6733555 | Vacuum bag collar A user closable collar for a vacuum cleaner bag, the collar body being formed from a single blank of relatively rigid material which is folded to define three generally overlapping and planar panels, a middle panel having fixed raceway element which is adhesively se... | 05/11/2004 |
| 6716262 | Mounting collar for a filter bag A mounting collar is for supporting a vacuum cleaner filter bag in a mounted condition over a vacuum cleaner fill tube. The fill tube has a cylindrical outer surface. A panel of the mounting collar is configured to be attached to the filter bag. The panel has a firs... | 04/06/2004 |
| 6461394 | Dust bag for use in a vacuum cleaner A dust bag for vacuum cleaners including a bag shaped member of an air permeable material, adjacent to an inlet opening attachable by an adhering layer to a plate shaped member to facilitate mounting of the dust bag in an intended vacuum cleaner. The adhe... | 10/08/2002 |
| 6446303 | Bag assembly for a vacuum cleaner An outer bag assembly for an upright vacuum cleaner is disclosed. The outer bag assembly comprises a flexible, air permeable enclosure having an internal volume adapted to contain a disposable inner bag. The outer bag assembly is further comprised of an u... | 09/10/2002 |
| 6379408 | Mounting and closure structure for a bag, such as a vacuum cleaner bag A sealable debris bag includes a bag body having an opening, and a plate member attached to the bag body proximate the opening. First and second portions of the plate member are pivotable along a fold-line so that the first portion is engageable with the ... | 04/30/2002 |
| 6224645 | Dust separator A dust separator for a vacuum cleaner, in which the bag is sealingly connected to a rigid member that screens-off an air-flow passageway through the vacuum cleaner and has an opening with which the bag connects. The screening member is separate from the b... | 05/01/2001 |
| 6136056 | Connection member for a filter bag for vacuum cleaning equipment A connection member for a filter bag for vacuum cleaning equipment. The member has a base with two superposed base layers of stiff material which together define a first passage opening. A slide element, located between the two layers of the base, has a s... | 10/24/2000 |
| 6086649 | Holder for a vacuum cleaner dust bag A holder (10) for a vacuum cleaner dust bag which is removably arranged in the vacuum cleaner and includes a sleeve (14) on which an open end (13) of the bag (11) is received. Two or more clamping blocks (17) at least partly surround the sleeve and can be... | 07/11/2000 |
| 6071322 | Dust container for vacuum cleaners A dust container for vacuum cleaners includes a bag and a front plate. The bag is made of a material that, essentially, is permeable only to air. The front plate encloses a suction opening in the bag. The front plate is of a shape that is independent of t... | 06/06/2000 |
| 6007594 | Multiple use disposable vacuum cleaner bag A disposable reusable vacuum cleaner bag for a vacuum cleaner of the home appliance type is disclosed. The vacuum bag has an inlet for receiving materials from the vacuum cleaner, an apparatus for attaching the bag to the vacuum cleaner, and a resealable ... | 12/28/1999 |
| 5803939 | Industrial dust collector and method for its use A cartridge filter element for installation in a plenum of a filtration housing that receives a dirty air flow and cleans that flow by flow passage through a filter material or media of the cartridge filter element, with the cleaned air then passed out of... | 09/08/1998 |
| 5772712 | Manually closable vacuum cleaner bag collar and method of making A manually closable collar for a vacuum cleaner bag is adapted to be secured to an air bag. The collar is formed from a single blank of relatively rigid material folded to define three overlying and generally planar panels. Each of the panels defines an a... | 06/30/1998 |
| 5766283 | Dust filter bag for a vacuum cleaner The invention pertains to a filter bag (8) for a vacuum cleaner (1), with a retainer plate (16) made of a cardboard-paper material that can be attached to a dust bag (37), for example by gluing, and that has a sealable opening (19) for a suction tube (vac... | 06/16/1998 |
| 5725619 | Device for closing and ejecting the bag of a vacuum cleaner An obturation device for the disposable bag (1) of a vacuum cleaner, the bag (1) having a rigid area (1a) in the vicinity of a closable filling inlet, in order to fix the bag (1) to a frame part (13) of the vacuum cleaner, as well as a flap (5) for closin... | 03/10/1998 |
| 5725620 | Manually closable vacuum cleaner bag A manually closable collar for a vacuum cleaner bag is adapted to be secured to an air bag. The collar is formed from a single blank of relatively rigid material folded to define three overlying and generally planar panels. Each of the panels defines an a... | 03/10/1998 |
| 5522919 | Method for transporting hazardous materials A vehicle for transporting hazardous materials that may yield airborne particulate contaminants, such as asbestos, includes in the disclosed embodiment a trailer having an inner surface, an outer surface, and at least one door defined therein for providin... | 06/04/1996 |
| 5503661 | Method and device in a filter valve A method and a device are provided for cutting off a gas flow through a filter element in a ceramic filter of high-temperature type upon breakage of the filter element, wherein a pulling member which is fixed to the lowermost part of the filter element ca... | 04/02/1996 |
| 5230724 | Dust filter bag A dust filter bag (1) for a vacuum cleaner, having a holding plate (2) which has a tightly closed opening (3) for a suction pipe of a vacuum cleaner, the opening (3) being adapted to be closed from the outside by a separate closure flap (5) which has an i... | 07/27/1993 |
| 5226941 | Dust filter bag A duct filter bag (1) for a vacuum cleaner having a holding plate (2, 15) which has a tightly closed opening (4) for a pipe connection of a vacuum cleaner, the opening being adapted to be closed from the outside by a separate closure flap (5) which has an... | 07/13/1993 |
| 5084174 | Filter bag for a machine screen A filter bag (1) for a disc-like filter, comprising filter surfaces (2) to be positioned on both sides of a filter element. The filter element is inserted into the filter bag, and the filter bag is heated so that the heated portion shrinks, thus tightenin... | 01/28/1992 |
| 5057131 | Vacuum cleaner filter bag assembly A permanent mounting assembly for a vacuum cleaner filter bag includes a plastic collar stitched to the porous body of the vacuum cleaner bag around the inlet opening thereof. The bag is mounted on the exterior surface of a projection on the vacuum cleane... | 10/15/1991 |
| 5052451 | Dust control apparatus A dust control apparatus having a cover member lowerable into an opening of a container, the cover member having a radially expandable seal for sealing the opening, the cover member having a passage therethrough adapted to receive a conduit, the cover mem... | 10/01/1991 |
| 4707169 | Cord dump and bag tensioning cap The invention provides a resiliently mounted top cap for a cleaner bag that tends to urge a bag upwardly to tighten it. At the same time, the cap may be removed downwardly against its spring bias for shaking as a dirt loosening mechanism. The cap also inc... | 11/17/1987 |
| 4662913 | Vacuum cleaner bag suspension A resilient support sustaining the upper terminus of a dirt collecting bag on the handle of an upright vacuum cleaner in which an extensible strap on the bag is fastened within a downwardly open recess on the handle maintaining the upper terminus of the b... | 05/05/1987 |
| 4566884 | Vacuum cleaner bag support A vacuum cleaner bag support in which a compression spring is itself supported in the interior of the upper terminus of an outer bag and carries a bag top support which resiliently maintains the bag elevated against lateral expansion thereof. An ornamenta... | 01/28/1986 |
| 4311493 | Vacuum cleaner bag assembly A vacuum cleaner has an elongated porous outer bag for holding a filter bag over an air outlet. A hanger within the outer bag is positioned to suspend the outer bag from the vacuum cleaner, as well as to hold a pocket within the outer bag, so that spare f... | 01/19/1982 |
| 4240812 | Vacuum cleaner bag assembly A vacuum cleaner has an elongated porous outer bag for holding a filter bag over an air outlet. A hanger within the outer bag is positioned to suspend the outer bag from the vacuum cleaner, as well as to hold a pocket within the outer bag, so that spare f... | 12/23/1980 |
| 4116648 | Multi-layer filter dust bag for a vacuum cleaner A vacuum cleaner dust bag that is constructed to substantially increase the filtering action of the bag and therefore is particularly adaptable for use in vacuum cleaners utilized in hospitals, nursing homes, and other health care facilities. The filter d... | 09/26/1978 |
