| Patent Number |
Title Of Patent |
Date Issued |
| D254506 |
Corrugated metal sheet contact body for humidifiers |
March 18, 1980 |
|
| D254207 |
Corrugated metal sheet contact body for humidifiers |
February 12, 1980 |
|
| D243190 |
Emission electrode holder for electrostatic precipitator |
January 25, 1977 |
|
| 4310691 |
Method for selectively recovering sodium citrate from an aqueous solution |
January 12, 1982 |
| A process for recovering sodium citrate from a solution utilized in an absorption/stripping process for SO.sub.2 recovery, which involves cooling a portion of the stripping solution to precipitate sodium sulfate, which is separated from the mother liquor. Thereafter, the mother liquor po |
| 4277255 |
Cleaning process control method for textile barrier filter material |
July 7, 1981 |
| A method of controlling the cleaning process for the cleaning of textile barrier filters, for example bag filters, subsequent to dust precipitation on the filter material. The cleaning is carried out with a cleaning system (14) comprising means (16,17,18) for distributing compressed air |
| 4269578 |
Apparatus for forming a web of material |
May 26, 1981 |
| A web is formed from particulate material, for example, wood fibers, by depositing the fibers on a conveyor surface in a distribution chamber. The particulate material is introduced into the distribution chamber at its top by a carrier air stream which is caused to oscillate across the |
| 4257784 |
Method and apparatus for cleaning used air from spray booths wherein articles are lacquered |
March 24, 1981 |
| For cleaning a flow of used air from a spray booth wherein articles are lacquered, a duct is provided with a first constriction where the flow of used air is brought into contact with washing fluid so as to wet lacquer particles in the used air. Downstream of the first constriction a gui |
| 4218188 |
Axial fan |
August 19, 1980 |
| In an axial fan having an impeller with settable blades and wherein the root end of each blade connects, via a bearing permitting rotation of the blade, to the outer end of a blade-attachment shaft extending substantially radially relative to the impeller, the blade-attachment shaft |
| 4197267 |
Method for forming a web of material |
April 8, 1980 |
| A web is formed from particulate material, for example, wood fibers, by depositing the fibers on a conveyor surface in a distribution chamber. The particulate material is introduced into the distribution chamber at its top by a carrier air stream which is caused to oscillate across the |
| 4181506 |
Method for recovering concentrated sulphur dioxide from waste gases containing sulphur dioxide |
January 1, 1980 |
| Improved efficiency in recovering SO.sub.2 from waste gases is obtained in a system where the SO.sub.2 is absorbed into a solution which is then distilled. The method of this application entails compressing the steam-SO.sub.2 mixture issuing from the still before condensing out the s |
| 4141704 |
Device for clamping a cassette filter in a filter housing |
February 27, 1979 |
| A device for clamping a filter cassette in a filter housing. The filter cassette comprises a frame which releasably mounts a sleeve-type filter element having a common clean-gas opening at the top. The filter cassette slides into the filter housing to underlie a connecting frame and the |
| 4139584 |
Contact body for liquid and gas |
February 13, 1979 |
| In a device for causing contact between horizontally-flowing gas and vertically-flowing liquid, a stack of corrugated contact plates in face-to-face contact and having their corrugations inclined to the horizontal plane. Alternate plates of the stack are inclined upwardly in the dire |
| 4137644 |
Treating airborne web material |
February 6, 1979 |
| Web material is carried on air to advance the material in a fixed stable floating position through one or more decks of a treating plant, preferably a drier. The air is supplied through pairs of apertures arranged in the upper surface of blow-boxes distributed in the conveying path o |
| 4106919 |
Arrangement in emitting electrodes for electrostatic precipitators |
August 15, 1978 |
| In an electrostatic precipitator, the emitting electrodes consist of helically wound wire, and are extended and attached in the space between the collecting plates, and have a non-round cross-section. In each of the electrodes has a long axis approximately twice the short transverse axis |
| 4099296 |
Method and apparatus for forming a material web |
July 11, 1978 |
| A web is formed from particulate material, for example wood fibres, by depositing the fibres on a movable deposition surface in a chamber. The particulate material is carried to the surface in an air stream to form a composite material flow which is caused to oscillate across the surface |
| 4069595 |
Arrangement for conveying web material through a treating plant |
January 24, 1978 |
| A treatment plant for web material which, when bent, exhibits stiffness transverse to the direction of bending. The treatment plant comprises a series of blow boxes arranged in sections with the boxes in each section having parallel plane perforated surfaces on opposite sides of the web |
| 4058329 |
Connecting piece for mounting a ventilation element in an opening in a ceiling or wall |
November 15, 1977 |
| A ventilation element for example a valve is anchored in an opening in a ceiling or wall of limited thickness by means of a connecting piece in form of a cylindric pipe with a stop flange and equipped with a plurality of elongated, narrow wings of a resilient material and tangentially |
| 4038059 |
Humidity and heat exchanger apparatus, and method for its manufacture |
July 26, 1977 |
| The transfer elements of the rotor of a regenerative heat and humidity exchanger are made of a non-hygroscopic material, such as aluminum, the surface of which is treated to form a hygroscopic layer thereon. This provides the benefits in humidity transfer previously obtained with all |
| 4035172 |
Regenerative humidity and heat exchange apparatus |
July 12, 1977 |
| A surface layer is formed on transfer elements of the rotor of a humidity and heat exchanger rotor, the layer not only being hygroscopic to provide the desired humidity transfer, but also serving as a bonding agent or cement for holding the transfer elements together in the desired rotor |
| 4033732 |
Method and apparatus for cleaning fabric filters of bag type or the like |
July 5, 1977 |
| In a method and apparatus for cleaning fabric filters of bag type or the like with a reverse flow of a gaseous medium improved cleaning action is achieved by applying the gaseous medium to the surface of the fabric opposite the dust-collecting surface in pulses which reach a high maximum |
| 4019953 |
Apparatus for removing dust from region adjacent doctor blade |
April 26, 1977 |
| A bin-like arrangement with a mesh near its bottom collects dust from near the doctor blade of a Yankee cylinder in a paper making machine; a trough-like arrangement having a sloping bottom at the lower end of the bin receives the dust, and a plurality of horizontal air jets are provided |
| 4014672 |
Gas filter tube locking apparatus |
March 29, 1977 |
| Apparatus for detachably locking a gas filter in operative position in a wall opening, wherein the upper end of the bag has a circumferential thickened portion which is retained, in a converging section of a socket mounted in the opening, by means of a locking cylinder which fits closely |
| 4013551 |
Device for sorting of goods |
March 22, 1977 |
| An arrangement for sorting of refuse or laundry into various kinds of goods, comprising a transportation system in which the refuse or laundry is transported in conveyance shafts from a number of depositing places to a common collecting place with separate containers for the various kind |
| 4006856 |
Arrangement for utilizing solar energy for heating buildings |
February 8, 1977 |
| An arrangement utilizing solar energy for heating a building having channel spaces in the roof, the outer walls, and the floor, all mutually communicating in series with each other in at least one cross-section of said building and being sealed toward the surrounding atmosphere, a pr |
| 3995809 |
Arrangement for air-conditioning of one or more rooms |
December 7, 1976 |
| A heating system for a room comprising two heat pumps. A base heat pump is designed so that its evaporator never freezes up or that no frost layer forms during wintertime operation. An auxiliary heat pump is provided and is put into operation during times of extreme cold, whenever the ca |
| 3987713 |
Air jet nozzle and system |
October 26, 1976 |
| A low-noise nozzle system for receiving an air flow from a relatively low-velocity, high-volume air source and for producing therefrom a high-velocity, low-volume jet of air for delivery into a room to control the distribution of air in the room. The nozzle inner walls first extend a |
| 3984194 |
Axial flow fans |
October 5, 1976 |
| In an axial flow fan impeller, the natural frequency of vibration of the individual blades is increased by mounting each blade to the annular support rim or hub for swinging movement relative to the ring about an axis, which lies generally perpendicular to a radius passing through the |
| 3982328 |
Dryer for material coated on two surfaces |
September 28, 1976 |
| Web or sheet material is carried on air to advance the material in a fixed stable floating position through one or more decks of a treating plant, preferably a drier. Fixing chambers providing an air flow substantially parallel to the plane of the material and blow boxes with an air flow |
| 3980166 |
Device for dumping chute |
September 14, 1976 |
| A dumping chute is provided with a gate for blocking the outlet from the chute to a shaftway designed to convey dumped goods, such as laundry. The gate is pivotally mounted on a horizontal axis at its upper end so as normally to close the outlet, and to swing into the shaftway to open th |
| 3979038 |
Arrangement at transport of web or sheet material |
September 7, 1976 |
| Web or sheet material is carried on air to advance the material in a fixed stable floating position through one or more decks of a treating plant, preferably a drier. Spaced fixing chambers carried out with an air flow substantially parallel to the plane of material are mounted on either |
| 3968833 |
Method for heat recovery in ventilation installations |
July 13, 1976 |
| A method of operating recuperative heat exchange means in the supply and exhaust ducts of a ventilation installation exposed to sub-freezing atmospheric condition so that the heat exchanger in the exhaust duct is allowed to ice up and is periodically defrosted. The method operates to |
| 3963810 |
Contact body for cooling towers |
June 15, 1976 |
| A contact body comprising a sheet of material adapted to be positioned upright on edge within a cooling tower along with a plurality of similar bodies. Water is caused to flow downwardly upon the surfaces of said body, in the preferred embodiment countercurrent to the flow of air through |
| 3955834 |
Apparatus for connecting ducts with a self-sealing joint |
May 11, 1976 |
| A duct-connecting joint of tubular cylindrical form adapted to be telescopically engaged within the free end of a cylindrical duct having an L-shaped sealing element extending about its circumference with a base portion flush against the cylindrical wall of the connecting body and a |
| 3951461 |
Pneumatic conveying pipe system for collection and intermittent conveyance of different types of |
April 20, 1976 |
| A system for pneumatically transferring different types of goods through common piping. The system operates automatically to direct one type of goods to one container, for example goods such as trash which is to be held for destruction, and the other type of goods to another container, |
| 3948167 |
Arrangement at central suction installations for suction conveyance of refuse and waste |
April 6, 1976 |
| Apparatus for transferring waste from the collection chamber of a suction waste-collection system into a wastetransport container in which the collection chamber is at the minimum absolute pressure of the system and in which the transport container is at atmospheric pressure. The apparat |
| 3946647 |
Device for preferably cooling a room by a ventilation air stream |
March 30, 1976 |
| The throwing length of a stream of air entering a room through a large-area ventilator outlet is controllably increased by including within the aperture of the ventilator at least one air nozzle of adjustable direction and orifice cross-section and supplied with air under sufficiently hi |
| 3935898 |
Device for air-conditioning a number of rooms the heat requirements of which are different and v |
February 3, 1976 |
| A system for air-conditioning an installation having a number of rooms, the heat requirements of which are different and vary preferably with respect to time, which rooms are connected to a central air-conditioning unit. Light fixtures producing radiation heat are mounted in said rooms a |
| 3935880 |
Device for reduction of disturbing noise in a flow control device |
February 3, 1976 |
| A flow control device in a casing through which air passes comprises a baffle or threshold projecting from one inner wall of the casing toward an opposed wall and having an arcuate surface facing upstream, a plate or pressure plane disposed upstream of the threshold and mounted for rotat |
| 3935625 |
Method of manufacturing axial fans of different sizes |
February 3, 1976 |
| A method for manufacturing fan blades which are adjustable in operation. The adjusting means comprises a compressed air box for actuating each fan blade by means of a dog member, said box and said member being non-rotatable on the fan wheel axle. The fan is easy to construct to diffe |
| 3933393 |
Arrangement at central installations for pneumatic transport of packaged refuse |
January 20, 1976 |
| In pneumatic refuse systems, each vertical branch duct for receiving the refuse is normally connected to a main suction duct through a valve which, when closed, causes the refuse to be collected in the bottom of the branch duct and, when periodically opened, releases the accumulated refu |
