Patents by Inventor Helmut Pelzer

Helmut Pelzer 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).

  • Patent number: 6299961
    Abstract: The invention relates to recyclable textile floor coverings for motor vehicles with a multi-layer structure and processes for their preparation. In particular, recyclable textile floor coverings for motor vehicles with a multi-layer structure include a foam layer, a separation layer, a heavy layer, and a textile carpet, wherein the adhesiveness of the separation layer with respect to the heavy layer is different than the adhesiveness of the separation layer with respect to the foam layer. In another embodiment, the separation layer is separably bonded to the heavy layer by spot bonding and/or is separably bonded to the foam layer by spot bonding. The separation layer allows separate recycling of the foam layer on one hand and the textile carpet including the heavy layer on the other hand.
    Type: Grant
    Filed: December 3, 1997
    Date of Patent: October 9, 2001
    Assignee: HP-Chemie Pelzer Research and Development Ltd.
    Inventor: Helmut Pelzer
  • Patent number: 6019923
    Abstract: The subject matter of the present invention is a process for producing decorable moulded parts made of plastic materials, whereby an extrudable thermoplastic material is injected or pressed behind a non-dried or non-cured flat decorative layer or paint layer.In a preferred embodiment, the decorative layer or paint layer is powder coated, whereby the support film, the paint layer and the thermoplastic material are coextruded together.This process allows decorable moulded parts having complex geometrical shapes to be manufactured.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: February 1, 2000
    Assignee: HP-Chemie Pelzer Research & Development Ltd.
    Inventor: Helmut Pelzer
  • Patent number: 6010870
    Abstract: The present invention relates to the use of a composite material made of a fibrous material and binders in the form of a polymer of hydroxyfatty acids for the preparation of molded parts in the automobile field, in particular, for acoustic attenuation in the areas of the hood, bulkhead (on both sides), tunnel, door, roof, footwell, pumps, A to D pillars and air distribution duct, and as an optionally self-supporting base for interior trims, especially for instrument panel covers, tunnel linings, door trims, seat back linings, A to D pillar linings and spare wheel covers, and as parts with a double function, especially as roof liner, rear shelf, filling piece, trunk mat or undershield.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: January 4, 2000
    Assignee: HP-Chemie Pelzer Research and Development Ltd.
    Inventors: Helmut Pelzer, Alexander Steinbuchel
  • Patent number: 5935677
    Abstract: A process for the preparation of a textile floor covering for a motor vehicle includes the steps of wiper blade coating a mixture (2) of foam off-cuts and a self-curing binder in a matrix form (1) of a floor panel of a motor vehicle in a desired layer thickness profile; pressing onto the mixture a textile carpet (4) provided with a heavy layer (3) thereby adjusting the desired density of the foam off-cuts; and curing the binder during the pressing to form an absorption foam backing layer and to bond the backing layer to the heavy layer. In an alternative embodiment, the absorption foam backing layer is first formed and then adhesively bonded to the heavy layer. By means of the invention a strong bond between the backing layer and heavy layer, and a uniform density and distribution of the foam off-cuts is obtainable, whereby a high degree of acoustic dampening efficiency is achieved.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: August 10, 1999
    Assignee: HP-Chemie Pelzer Research & Development Ltd.
    Inventor: Helmut Pelzer
  • Patent number: 5922626
    Abstract: The self-adhering tape-like or fibrous reinforcing material to be used according to the invention consists of laminates of at least two or more co-extruded layers of at least one high-temperature stable plastic material (A) and at least one low-melting plastic material (B). The low-melting plastic material (B) has self-adhering binder properties whereas the high-temperature stable plastic material (A) is suitable for conferring increased strength properties to nonwoven textile fabrics, in particular in the automobile area.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: July 13, 1999
    Assignee: HP-Chemie Research and Development Ltd.
    Inventor: Helmut Pelzer
  • Patent number: 5652415
    Abstract: A molded article for the absorption of airborne sound, to be used principally in the engine compartment of motor vehicles and particularly as a sound absorber inside partial and complete motor encapsulations, is formed by a porous absorber (1) of which the core (6), being sealed on both sides (7,8) over its complete surface by a respective PU film of a thickness less than 90 .mu.m, is made from an open-pored PU (polyurethane) foam of a thickness of at least 3 mm and about 15 mm at the most. The core comprises cavities (2-4) originating on the bottom face and formed by the injection molding process, said cavities being open only towards the bottom face (5) and having different cavity volumes and different heights (11) measured from the bottom face (5).
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: July 29, 1997
    Assignee: Helmut Pelzer
    Inventors: Helmut Pelzer, Tarik Akyol, Hans Peter Keller, Rolf Guenzel
  • Patent number: 5624619
    Abstract: Subject matter of the present invention are molded articles with leather-like surface properties in the automobile industry as well as processes for the production thereof. These can be prepared in such a way that ground waste leather is added to thermoplastic materials or elastic duroplasts in an amount of up to 95% per weight. By this way, a leather-like soft feel and a certain water absorption capacity can be attained in thermoplastic materials.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: April 29, 1997
    Assignee: HP - Chemie Pelzer Research & Development, Ltd.
    Inventor: Helmut Pelzer
  • Patent number: 5198626
    Abstract: An aluminum lining in combination with a sound absorbing object such as a fleece and for protection against thermal load, has a double corrugated contour resulting in pyramids and being perforated in specific locations such as the peaks, along the edges of both.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: March 30, 1993
    Inventor: Helmut Pelzer
  • Patent number: 5092192
    Abstract: A device for attenuating sound in and of wheels, the wheel having a rim portion, a hub, and a web in between, there being a radially inwardly oriented flange surface, is improved by an attenuating layer on or in a groove of the flange surface, possibly with an extension against the web, and a cover, radially outwardly, and axially urging the attenuating layer upon the flange and the web.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: March 3, 1992
    Inventor: Helmut Pelzer
  • Patent number: 5090288
    Abstract: An enclosure for housing and operating liquid jet cutters includes concrete, U-shaped upside down positioned modules interconnected where needed and possibly having one end (or both) closed by concrete front plates that permitted the passage of work pieces, while confining spray water as much as possible to the interior of the module. The concrete material resists the cutting effect of a jet that has gone astray.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: February 25, 1992
    Inventor: Helmut Pelzer
  • Patent number: 4970909
    Abstract: A device for attenuating sound in and of wheels, the wheel having a rim portion, a hub, and a web in between, there being a radially inwardly oriented flange surface, is improved by an attenuating layer on or in a groove of the flange surface, possibly with an extension against the web, and a cover, radially outwardly, and axially urging the attenuating layer upon the flange and the web.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: November 20, 1990
    Inventor: Helmut Pelzer
  • Patent number: 4957796
    Abstract: Foot cover for placement on the floor space of motor vehicles includes a polyurethane form part being provided with a sealing lip extending from edges and edge portions of the form part and is integral therewith; a reinforcing insert extends into and is embedded by the sealing lip.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: September 18, 1990
    Inventor: Helmut Pelzer
  • Patent number: 4938912
    Abstract: A deep drawn, synthetic-foil-sealed textile with foamed backing is perforated by applying hot pressurized air towards the foil, locally and in discrete spots, so that the foil melts locally, and foil material is blown into the textile under formation of a perforation duct that is bonded to the textile material underneath.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: July 3, 1990
    Inventor: Helmut Pelzer
  • Patent number: 4894275
    Abstract: Floor mats or foot pads for automobiles are preferably made of foam each having a back and underside being provided with a plurality of pocketlike indents; prior to installation these pockets are filled with a viscous adhesive, a bonding agent, a boom attenuating material or the like; the pockets are provided with undercut-overhung portions such as the pad hangs vertically for storage the viscous material will not flow out of these pockets.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: January 16, 1990
    Inventor: Helmut Pelzer