Patents by Inventor Dieter Unrath
Dieter Unrath has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8979962Abstract: A filter element for insertion into a housing of a ventilation or air-conditioning system, including a bellows with pleated walls and pleat tips and a front face, which can be faced towards a wall of the housing, wherein a guide duct is allocated to the front face, wherein the guide duct is formed by at least one breakthrough in the pleated walls and/or in a side strip that is hemming the front face, in view of the object to indicate a mechanical coding for a filter element which ensures a unique allocation of a filter element to a housing, wherein the filter element is provided with breakthroughs and wherein the mechanical strength of pleated walls and side strips is impaired as little as possible by the breakthroughs, characterized in that the breakthrough is provided with a reinforcing.Type: GrantFiled: August 30, 2012Date of Patent: March 17, 2015Assignee: Carl Freudenberg KGInventors: Uwe Haefner, Dieter Unrath, Roland Dobner
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Publication number: 20130068103Abstract: A filter element for insertion into a housing of a ventilation or air-conditioning system, comprising a bellows with pleated walls and pleat tips and a front face, which can be faced towards a wall of the housing, wherein a guide duct is allocated to the front face, wherein the guide duct is formed by at least one breakthrough in the pleated walls and/or in a side strip that is hemming the front face, in view of the object to indicate a mechanical coding for a filter element which ensures a unique allocation of a filter element to a housing, wherein the filter element is provided with breakthroughs and wherein the mechanical strength of pleated walls and side strips is impaired as little as possible by the breakthroughs, characterized in that the breakthrough is provided with a reinforcing.Type: ApplicationFiled: August 30, 2012Publication date: March 21, 2013Applicant: CARL FREUDENBERG KGInventors: Uwe HAEFNER, Dieter UNRATH, Roland DOBNER
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Patent number: 7956522Abstract: An ignition anode for an ignition device of a reignitable rocket combustion chamber. The anode includes an ignition anode body having an ignition anode frontal area. The ignition anode frontal area has a plurality of edges.Type: GrantFiled: November 1, 2007Date of Patent: June 7, 2011Assignee: Astrium GmbHInventor: Dieter Unrath
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Publication number: 20080136304Abstract: An ignition anode for an ignition device of a reignitable rocket combustion chamber. The anode includes an ignition anode body having an ignition anode frontal area. The ignition anode frontal area has a plurality of edges. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.Type: ApplicationFiled: November 1, 2007Publication date: June 12, 2008Applicant: ASTRIUM GmbHInventor: Dieter Unrath
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Publication number: 20020108701Abstract: A method of producing a filter insert (1) having folds (2) extending radially, by first pleating a filter material to form an essentially rectangular filter sheet (3) having folds (2) arranged across the longitudinal direction (4), then wrapping the pleated filter sheet (3) around a core (7), and next joining the first fold (8) and last fold (9) of the filter sheet (3) adjacent to one another in the circumferential direction.Type: ApplicationFiled: December 7, 2001Publication date: August 15, 2002Inventors: Dieter Hintenlang, Dieter Unrath, Hans Wiegand
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Patent number: 6361577Abstract: A cassette filter made of a case open at either end that is formed of flat sheets which surround a dimensionally stable filter pack in a dust-tight manner. The sheets are cemented to each other and to the filter pack by means of adhesive layers and are spatially fixed in position by the filter pack.Type: GrantFiled: January 26, 1996Date of Patent: March 26, 2002Assignee: Firma Carl FreudenbergInventors: Dieter Unrath, Margit Hofmann
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Patent number: 6352665Abstract: A tubular filter body is embedded at the extremity into a molding compound. A u-shaped end piece with a u-shaped groove is provided. Liquefied molding compound is poured into the U-shaped groove. The filter body is introduced into the groove, and immersed into the molding compound. The molding compound is allowed to cure to produce a permanent bond.Type: GrantFiled: May 28, 1999Date of Patent: March 5, 2002Assignee: Firma Carl FreudenbergInventors: Dieter Unrath, Margit Hofmann
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Publication number: 20010038165Abstract: A tubular accordion filter element having at one end a U-shaped end piece of flexible sealing material embraces a filter body on the outside and inside in an annular manner. A necking is arranged on the outside of the end piece, extending away from the end face of the end piece, the necking being followed by a straight or frustoconical area.Type: ApplicationFiled: May 28, 1999Publication date: November 8, 2001Inventors: DIETER UNRATH, MARGIT HOFMANN
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Patent number: 6193830Abstract: A method for manufacturing a filter insert, configured as a folding pack and made of thermoplastically bondable nonwoven material, such that a planar filter medium is first folded and then immobilized in a permanent form at a preset fold spacing by delivery of energy and subsequent cooling, such that after the process step of creating a defined fold spacing, the two outer edges of the folded pack are positively clamped into comb-like profiles, substantially corresponding to the fold geometry and dimensions of the folded pack and engaging in toothed fashion into the top and bottom of the folds, the spacing between which is chosen to be the same as or slightly less than the thickness of the nonwoven fiber fabric, wherein the folded filter material projects beyond the comb-like profiles at each outer edge a distance less than 1 times the fold spacing, wherein a sealing band, corresponding in width substantially to the height of the folds, is laid on the outer edges on the long sides, and in each case compressedType: GrantFiled: December 22, 1995Date of Patent: February 27, 2001Assignee: Firma Carl FreudenbergInventor: Dieter Unrath
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Patent number: 6056799Abstract: A tubular accordion filter element having at one end a U-shaped end piece of flexible sealing material embraces a filter body on the outside and inside in an annular manner. A necking is arranged on the outside of the end piece, extending away from the end face of the end piece, the necking being followed by a straight or frustoconical area.Type: GrantFiled: March 26, 1998Date of Patent: May 2, 2000Assignee: Firma Carl FreudenbergInventors: Dieter Unrath, Margit Hofmann
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Patent number: 5695535Abstract: A pocket filter includes a front frame which accommodates at least two filter bags. The top of each bag accommodates a reinforcing frame. The bags are secured dust-tight to one another, to the reinforcing frames, and to the front frame. The front frame is a severed at at least one point along its perimeter. The front frame has a U-shaped channel around it that opens inward, and the reinforcing frames can be inserted into the channel when the front frame is open at the severed point. The reinforcing frames match each other and match the size of the front frame, creating a dust-tight contact between all the adjacent reinforcing frames and the inner surface of the channel when the front frame is closed at the severed point. Facing webs, disposed in the channel opening on each side of the "U", create a dust-tight contact with the reinforcing frame.Type: GrantFiled: March 27, 1997Date of Patent: December 9, 1997Assignee: Carl FreudenbergInventors: Dieter Hintenlang, Dieter Unrath, Udo Michaelis, Margit Hofmann
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Patent number: 4996774Abstract: The invention is directed to a guide bar which includes a fill body in the guide groove thereof. The fill body is disposed in the region of a lubricating bore and bridges the gap between the bottom of the groove and the rakers of the drive links of the saw chain. The fill body raises the bottom of the groove in the region where lubricant is supplied to the saw chain through the lubricating bore. The fill body has a recess formed at the location of the lubricating bore for receiving lubricant therein. With the invention, the take along of the lubricant by the rakers of the drive links of the saw chain is improved thereby reducing the quantity of lubricant which would otherwise be lost. A method and an apparatus for forming the fill body in the guide groove of the guide bar are also disclosed.Type: GrantFiled: September 6, 1988Date of Patent: March 5, 1991Assignee: Andreas StihlInventors: Uwe Burger, Dieter Unrath, Horst Weinhold
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Patent number: 4693005Abstract: A guide bar for a saw chain of a motor-driven chain saw has a guide groove formed in the periphery thereof. The drive links of the saw chain have projections known as rakers which protrude beyond the side links of the saw chain and which are guided in the guide groove. The guide bar has at least one supply bore in a groove wall through which lubricating oil is supplied for lubricating the saw chain. In the vicinity of the supply bore, a lubricant surface extending approximately parallel to the groove bottom is provided. This lubricant surface extends to at least one supply surface extending as far as the supply bore. The rakers of the drive links move above the lubricant surface with a narrow spacing. The lubricating oil supplied via the supply bore is guided via the supply surface to the lubricant surface where it forms a film into which the rakers extend as the saw chain revolves.Type: GrantFiled: August 1, 1986Date of Patent: September 15, 1987Assignee: Andreas StihlInventors: Anton Wehle, Dieter Unrath, Gunther Zimmermann