Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7261823 | Ultrasonic transducer system The method is for treating a liquid or slurry with an ultrasonic energy. A first rotatable member being permeable to a medium and a first vibrating device are provided. The first vibrating device and the first member have a first gap formed therebetween so that the ... | 08/28/2007 |
| 7175744 | Apparatus for treating a wire or a felt band in a papermaking installation An apparatus for the treatment of, in particular for vacuum action upon, the at least one wire or at least one felt band in a papermaking plant. The wire or felt band is moved in circulation by the apparatus, which, if appropriate, is connected to a vacuum source. T... | 02/13/2007 |
| 7169262 | Method and apparatus for forming a paper or tissue web A method and apparatus for transferring vibrational forces to a wire of a papermaking machine for forming a web on the wire and for dampening vibrations imparted to the papermaking machine. In some embodiments, the apparatus is a vibrational device including a vibra... | 01/30/2007 |
| 7147755 | Ultrasonic transducer system The method is for treating a liquid or slurry with an ultrasonic energy. A movable endless member is provided that is permeable to a liquid. A transverse foil is disposed below the member and extends across the member and a transducer is in operative engagement with... | 12/12/2006 |
| 7141143 | Method and apparatus for draining fibre pulp suspension The invention relates to a method of draining a fiber pulp suspension, where the fiber pulp suspension is applied to a convergent dewatering space arranged between two wires travelling in the same direction. In the dewatering space, water and powdery substance are r... | 11/28/2006 |
| 6702925 | Method and apparatus for forming a paper or tissue web A method and apparatus for transferring a vibrational force to the wire of a papermaking machine in order to re-align the fibers of the web forming on the wire or to clean press section felts. In one preferred embodiment, the apparatus is a vibrational de... | 03/09/2004 |
| 6126786 | Apparatus and method of generating stock turbulence in a fourdrinier forming section A method and apparatus for generating turbulence in stock to deflocculate the stock in an open surface forming section of a paper making machine comprises a dewatering box providing vacuum assisted drainage and which has a set of dewatering elements that ... | 10/03/2000 |
| 5830322 | Velocity induced drainage method and unit A drainage device and method which provides for drainage from paper or pulp stock on a fabric in a sheet or mat making machine which includes a primary blade and trail blade with a gap therebetween for drainage wherein the size of the gap controls drainag... | 11/03/1998 |
| 5681430 | Activity induction in papermaking The apparatus of the present invention is a papermaking machine with a forming fabric in a looped configuration. The forming fabric carries paper stock through the papermaking process. The forming fabric passes over a liquid-filled cavity which is bounded... | 10/28/1997 |
| 5647958 | Wire part of a machine for the manufacture of fibrous material webs A wire part of a machine for the production of continuous fibrous material webs, especially a papermaking machine, includes two continuous wire belts which together form a twin-wire zone. At least one supporting element having a supporting surface is disp... | 07/15/1997 |
| 5578170 | Method of forming a tissue paper web A tissue web (W), which has improved formation and improved tensile properties but no appreciable deterioration of retention and layer purity, if applicable, in comparison with tissue webs produced in conventional twin wire tissue formers, may be formed i... | 11/26/1996 |
| 5562807 | Cross direction fiber movement and dewatering device An improved cross direction fiber movement and dewatering device for typical papermaking machinery comprised of a main body (22) typically made of ultra-high molecular weight polyethylene conventionally machined with vacuum orientation diagonal slots (30)... | 10/08/1996 |
| 5560808 | Hydraulically actuated breast roll shake The invention is directed to a roll shake connected to a roll in a paper-making machine, wherein the roll is movable in a direction generally parallel to an axis of the roll. A first hydraulic ram assembly, including a first cylinder and a first ram recip... | 10/01/1996 |
| 5306394 | Turbulence roll for a web former A turbulence roll for a web former. The roll generates high frequency small-scale vibration in the stock on the forming fabric whereby fluidization of the partially formed fiber mat and dispersion of fiber flocs in the stock is brought about. The turbulen... | 04/26/1994 |
| 5089090 | Continuous controlled drainage A process and apparatus for improving stock formation on an open surface paper making machine is described. By the use of both a path for the forming fabric which introduces a controlled level of agitation into the stock, and a low level of vacuum in a su... | 02/18/1992 |
| 5011577 | Pressure control forming section A method and apparatus are disclosed whereby the rate of drainage of the stock on a Fourdrinier paper making machine can be controlled for the full length of an open surface forming section. A continuous sealed drainage box is used from adjacent the head ... | 04/30/1991 |
| 4999086 | Dispersion roll in a fourdrinier machine In a Fourdrinier paper making machine a dispersion roll mounted between the headbox and the suction and dewatering means, underneath in contact with the Fourdrinier travelling fabric and extending laterally across the width of the fabric, and adapted to r... | 03/12/1991 |
| 4735686 | Twin-wire former and method for forming a paper web with steam implosion A method for forming a paper web by which web formation is improved and flocculation in the web is reduced includes the steps of feeding steam under pressure into the fiber suspension when the suspension enters into the gap of the former and as web format... | 04/05/1988 |
| 4657635 | Method and apparatus for the deflocculation of stock A papermaking machine including a non-dewatering forming board comprising a plurality of contiguous blades and a plurality of shower nozzles for showering stock carried by a forming medium over the forming board with a plurality of needle jets of water, e... | 04/14/1987 |
| 4608122 | Method for washing a paper fiber on a belt washer using a sonic frequency disturbance The washing efficiency of removal of cooking and bleaching chemicals from cellulose paper pulp on horizontal belt washing filters is improved by disrupting the filter mat adjacent the belt intermediately of soft, displacement wash liquor applications to t... | 08/26/1986 |
| 4539827 | Belt washing improvements The washing efficiency of removal of cooking and bleaching chemicals from cellulose paper pulp on horizontal belt washing filters is improved by disrupting the filter mat adjacent the belt intermediately of soft, displacement wash liquor applications to t... | 09/10/1985 |
| 4420370 | Pulp agitating device and method having multiple protruding inserts Relatively small easily exchangeable wear resistant inserts are mounted in a plurality of lengthwise grooves in a forming board or foil blade of a paper making machine so that a portion of each insert protrudes above the surface of the blade to form cross... | 12/13/1983 |
| 4379729 | Method and apparatus for the production of composite sheet material and a sheet material produced thereby A method and apparatus for the production of a composite sheet material and a material produced thereby are described, a typical product being a lightweight permanent or temporary formwork sheet of accurate thickness and parallelism made from material inc... | 04/12/1983 |
| 4306934 | Method and apparatus for forming paper The wet end of a fourdrinier paper machine includes a transversely disposed roll beneath the wire. The roll is shaped and mounted for rotation at a speed which is different from the speed of the wire to create pulses of negative pressure beneath the wire ... | 12/22/1981 |
| 4235667 | Method of and means for attaining uniformity in paper webs produced on a roll former By imposing pressure pulses on mobile fibers in suspension in paper making stock slurry in the primary drainage area of the forming zone of a roll former substantially uniform distribution of the fibers is effected in forming of the paper web. A device fo... | 11/25/1980 |
| 4194946 | Process for continuously preparing fiber reinforced cement Fiber reinforced cement is continuously prepared by forming a conveyor by connecting a plurality of suction boxes each having a perforated plate, contacting the perforated plates of the suction boxes with a filter cloth and moving the suction boxes with t... | 03/25/1980 |
| 4140573 | Stock formation in a paper making process The paper-making stock on a paper machine is improved by running the forming fabric, carrying the stock, as a layer of a dilute aqueous dispersion of fibers, over a modified low-vacuum suction box having a slotted cover made up of elongated blades dividin... | 02/20/1979 |
| 4137159 | Apparatus and method for deliquifying material In a substantially conventional system for receiving and conveying a fluid suspension of material there is an endless porous belt screen on which the material is spread and a tray beneath the belt to catch liquid which passes through the belt. A suction b... | 01/30/1979 |
| 4055460 | Paper machine shake The invention is to shake the upper run of a Fourdrinier forming fabric of a paper machine by imparting vibratory motion, in a direction transverse to the machine direction, to light-weight foil blades mounted at the dilute end of the Fourdrinier section.... | 10/25/1977 |
| 3985612 | Paper making system including forming fabrics and porous forming cylinders A paper forming machine includes at least one porous rotatable cylinder. An inner forming fabric or media in mesh form (hereinafter referred to as "inner forming media") is guided through a path around the cylinder and has a straight portion immediately b... | 10/12/1976 |
| 3974024 | Process for producing board of cement-like material reinforced by glass fiber This invention relates to a process for continuously producing a dense board of cement-like material reinforced by glass fiber, which comprises (1) preparing a slurry of cement-like material; (2) simultaneously spraying the cement-like slurry and short le... | 08/10/1976 |
