Crown Zellerbach Corporation

Imants Reba

Edward C Wolthausen

Gerald Hugh Hogland

Rudolph W Schutz

Nestor Kozbur

Rodney E Pollock

Sangho E Back

Fred L Pollard

A method and apparatus for cleaning and conditioning a fabric in which pressurized fluid is directed into a restricted and diminishing passageway formed by the fabric and a member forming an extended nip therewith so that the fluid is forced through the fabric.

Fabric conditioning and cleaning system

A system for handling discrete sheets including a nozzle for simultaneously lifting the sheet from a surface by suction and propelling the sheet in a direction generally corresponding to the plane of the sheet.

System for handling discrete sheets

A method for conveying a web using inner and outer pairs of elongated side jet nozzles employing the Coanda effect to propel the web while preventing undue distortion or folding thereof. Conveying is accomplished by flowing pressurized air through a plurality of apertures formed in the nozzles and attaching air flow to Coanda flow attachment surfaces slanting away from the apertures.

Pneumatic conveying method for flexible webs

A system for conveying a web using inner and outer pairs of elongated side jet nozzles employing the Coanda effect to propel the web while preventing undue distortion or folding thereof.

Pneumatic conveyor system for flexible webs

A system for slitting a parent web to form grooved rolls including movable shear slitters and a Coanda nozzle device for removing trim segments from the shear slitters.

Web slitting and grooving method

Web slitting and grooving system

A system and method for venting cooling air from a plurality of filaments with which said air has been associated, employing a Coanda flow attachment means, including a Coanda flow attachment surface, to separate the filaments and air into respective streams, and then to divert said air stream in a direction away from said filament stream.

System and method for venting cooling air from filaments

Apparatus for removing trim from a conveying fluid medium including a conduit defining a generally rectangular shaped exit opening. A fluid flow attachment plate leads from the opening for redirecting movement of the fluid medium. A screen for interrupting movement of the trim and separating it from the fluid medium is attached to the fluid flow attachment plate.

Trim separator

A system for serially conveying discrete flexible articles including a plurality of sequentially activated Coanda nozzles disposed along an article flow path and article support means cooperable with the nozzles to propel and stabilize the articles.

System for serially conveying discrete flexible articles

Apparatus for transporting strip material from a first location to a second location including a first conduit, a venturi device disposed along the first conduit and means for generating fluid flow in the interior of the first conduit through the venturi device. A second conduit leads from the first location to the venturi device and an auxiliary fluid flow generating means is provided for entraining the strip material at the first location and transporting it through the second conduit to the venturi device.

Strip material transporting apparatus

A system and method are provided for continually preventing filament bridging between adjacent draw nozzles. The system comprises a heating element, generally in the form of a metal heating wire, which is disposed between adjacent nozzles and is positioned in the path of filaments attempting to bridge the nozzles. The temperature is maintained at a level high enough above the melting point of the filaments so that they will continuously and instantaneously melt when they contact the heating element.

System and method for continuously preventing filament bridging between

A method and a system are provided for producing a continuous liquid spray curtain which, when sprayed onto a moving surface, covers essentially the entirety of that surface without substantial streaking thereof. The subject spray curtain is produced by discharging a continuous air curtain at a relatively high velocity of at least 600 feet per second. A plurality of liquid streams are at the same time discharged from a liquid discharge means at a relatively low velocity of not more than about 20 feet per second. The air curtain contacts the liquid streams at a minimum contact angle of between about -10.degree. and about +30.degree., measured from the center line of the liquid discharge means. The contacting air curtain atomizes the liquid streams and forms the subject high velocity, uniform, liquid spray curtain.

System for producing a liquid spray curtain

Apparatus for providing an air cushion to support web material during turning thereof and including means defining two plenums providing a flow path for pressurized gas prior to the gas exiting from a slit adjacent a generally curved fluid flow attachment surface. The dual plenum arrangement results in an even air distribution at the location of the slit thus contributing to web stability and control as the web floats on a cushion of air comprised of the pressurized air and ambient air along the generally curved fluid flow attachment surface due to the Coanda effect.

Turning bar for moving web

A method and system are provided for dispersing a plurality of closely associated filaments so that the dispersed filaments are capable of being deposited, in a random, convoluted pattern, on a moving web-forming surface to form a high machine-direction strength nonwoven product. The filaments are preferably dispersed by impinging same against a fluid-dynamically-assisted, contoured deflection means, preferably comprising a curved, downwardly inclined deflection element which is continuously traversed, generally codirectional with the filament flow, by a stream of air.

System and method for dispersing filaments

A filament draw nozzle including throughbore defining means having a shoulder spaced from the throughbore, a housing defining an aperture and positioned on the throughbore defining means, said housing abutting the shoulder whereby the housing is aligned relative to the throughbore defining means, and fiber inlet defining means, said fiber inlet defining means including a fiber inlet feed tube slidably positioned in the housing aperture. The throughbore and the housing aperture are disposed in alignment whereby the fiber feed tube is concentrically disposed within said throughbore.

Growing community of inventors

Vancouver, WA, United States of America

Imants Reba