Patents by Inventor Rolf Tschudin-Mahrer
Rolf Tschudin-Mahrer 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: 5064709Abstract: A composite part of flexible cellular material and elastic, rubber material, wherein the cellular material is a cellular synthetic material and is compressed with the rubber material under cellular synthetic material hot-stamping conditions, the cellular material being condensed in the region of attachment.Type: GrantFiled: May 5, 1989Date of Patent: November 12, 1991Assignee: Irbit Research & Consulting AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4867271Abstract: An acoustic insulating board of foam with structured bulge-forming surface in the form of regions (I, II) of different thickness. In order to obtain differing acoustic efficiency, the acoustic insulating board comprises plurality of individual boards (1) arranged one above the other, which boards are compressed in the regions (I) of lesser thickness and are fused together on their surface. In the regions (II) of larger thickness, the boards lie loosely on one another so that a top side facing in the direction of the structural bulging of a central individual board (1) is profiled in the regions of greater thickness.Type: GrantFiled: December 30, 1987Date of Patent: September 19, 1989Assignee: Irbit Research & Consulting AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4839223Abstract: The invention relates to a sealing element for sealing openings in special walls subject to fire-protection requirements, brick wall breaches or the like, wherein for cost-effective manufacturability and processibility and simultaneously fire-protection assurance the sealing element is made of a precompressed strip, preferably impregnated with a chloroparaffin and neoprene base, with delayed restoration, the strip being interspersed with a heat-expanding intumescent compound in an essentially uniform distribution.Type: GrantFiled: October 24, 1988Date of Patent: June 13, 1989Assignee: Irbit Research & Consulting AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4837064Abstract: The present invention relates to a transport roller consisting of elastic material with a rotation shaft of nonelastic material located in a central cavity. In order to optimize the functional properties such as degree of elasticity, resistance to wear and mechanical load-bearing capacity, the roller body (1), which consists of open-cell foam, is closed on its surface by a skin (2) of resilient material which forms an outer surface of the roller and anchors itself by engagement in the foam pores (7).Type: GrantFiled: December 30, 1987Date of Patent: June 6, 1989Assignee: Irbit Research & Consulting AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4767655Abstract: The invention concerns a joint sealing strip (D) consisting of open-cell precompressed foam material with which strip there is coordinated a foil (4) joining in the restoring of the foam material, and the invention suggests, specifically for optimizing the laying of the strip in a sealing manner, that the foil (4) be fashioned as an intermediate layer which is areally bonded to the foam material layers (1), between these layers.Type: GrantFiled: December 12, 1986Date of Patent: August 30, 1988Assignee: Irbit Research & Consulting AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4715473Abstract: A foam acoustic absorption member having a stabilizing layer with perforations and, in order to obtain a simple, stable structural shape of homogeneous resistance to flow, the stabilizing layer (2) is a wide-side wall of a hollow body (K) which wall is pressed, under thermal deformation, against the foam layer (1), the openings in said hollow body consisting of holes (9) punched from the foam side.Type: GrantFiled: December 11, 1985Date of Patent: December 29, 1987Assignee: Irbit Research & Consulting AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4666768Abstract: Foam panel with a skin provided on at least one surface and formed by melting of the foam material, characterized in that the skin is covered by a silicone layer.Type: GrantFiled: July 7, 1986Date of Patent: May 19, 1987Assignee: Irbit Research & Consulting AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4621731Abstract: A package of foam sealing strip of delayed rebound and of foam held in compressed state by the wall of the package. The wall of the package is formed of two flexurally rigid panels which protrude on both sides of the sealing strip and are held together by a plurality of hoops arranged spaced apart from each other.Type: GrantFiled: October 10, 1984Date of Patent: November 11, 1986Assignee: Irbit Holding AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4564550Abstract: A foam sealing tape comprises a foam sealing tape layer and an interlayer strip rolled up together in a compressed form. At least one wide-side surface of the interlayer strip has elevations which press into the foam sealing tape layer.Type: GrantFiled: February 28, 1985Date of Patent: January 14, 1986Assignee: Irbit Research & Consulting A.G.Inventor: Rolf Tschudin-Mahrer
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Patent number: 4506699Abstract: The flap for ventilation ducts, particularly for automobile air-conditioning systems, includes a flap member having opposite surfaces with a predetermined number of openings therein, a longitudinal bottom edge, opposite side edges and an upper edge. A pocket-shaped covering of foam material on the flap member is arranged in two layers which are folded around the longitudinal edge of the flap member onto the opposite surfaces of the foam material including foam sections extending beyond the opposite side edges and the upper edge of the flap member. The layers have a bond-activated foil covering which faces the perforated wide surfaces of the flap, the foil covering connecting the foam-material sections extending beyond the opposite side edges and the upper edge of the flap members. The band activated foil covering further connects the portions of foam-material lying opposite each other at the perforations in the flap member.Type: GrantFiled: January 17, 1983Date of Patent: March 26, 1985Assignee: Irbit Holding AGInventor: Rolf Tschudin-Mahrer
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Patent number: 4401716Abstract: A strip of impregnated and compressed foam material with delayed restoration which is rolled up into a roll, preferably for purposes of sealing, and particularly for improved sealing, the broad side of the roll is provided with a liquid-impermeable layer which adheres to the flank sides of the strip and which is expandable corresponding to the amount of restoration and has a spiral-shaped separation line corresponding to the winding joint of the sType: GrantFiled: August 20, 1982Date of Patent: August 30, 1983Assignee: Irbit Holding AGInventor: Rolf Tschudin-Mahrer