Patents Assigned to Coronet-Werke Heinrich Schlerf GmbH
  • Patent number: 5622411
    Abstract: A process for joining bristle bundles to a plastic bristle carrier, wherein the bristles of each bundle are melted at their fastening-side ends, accompanied by the formation of a thickened portion. The bristle carrier is provided at the bristle reception side with holes for receiving the thickened portions. The bristle bundles with the thickened portions are pressed into the bristle carrier, with a space above a bristle receiving side and between the bristle bundles, annularly surrounding the bristle area, being sealed against the bristle carrier, and with material rising during pressing on pressure application and filling the sealed area being displaced and compressed.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: April 22, 1997
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 5176427
    Abstract: For the treatment of bristles of brushes, the bristles are fixed in spaced manner from the use-side ends, which are cut to size and subsequently treated by a planar abrading surface arranged at right angles to the bristle extension and all of whose points are moved on circular paths having the same diameter. For setting the contact pressure the abrading surface is fed in the direction of the bristles and for influencing the treatment result the bristles are laterally supported between their fixing point and their use-side ends in a variable spacing from the abrading surface, but which is always the same for all the bristles.
    Type: Grant
    Filed: March 1, 1991
    Date of Patent: January 5, 1993
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 5087403
    Abstract: Bristle articles can be manufactured in that the bristle carrier and optionally the ends of the bristles are melted and brought together under pressure, or the bristles are introduced into an injection or foaming mould for the bristle carrier and are embedded in the bristle carrier material by injection moulding or foaming. The cycle time of these processes is extremely long as a result of the thermal processes (heating, melting, injection moulding, cooling). It is possible to significantly reduce the same in that the tools for holding or producing the bristle carrier on the one hand and the clamping devices for the bristles on the other are moved on closed paths and the clamping devices at at least one common station are transferred to the path of the tools and at least during the thermal processes are jointly moved with the tools and are subsequently returned to their movement path.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: February 11, 1992
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 5045267
    Abstract: A process and apparatus for the production of bristle articles include introducing the plastic bristles in the form of individual bristles or bristle strands through channels and sleeves extending the latter in to a mould for the bristle carrier, followed by thermal melting on their end located on the mould for formation of a thickened portion and the thickened portion on the bristle ends formed during melting is then sealingly engaged on the opening of the sleeve projecting into the mould. During the filling of the mould, the bristles and sleeve are kept in position within the same and the sleeve and the thickened portion on the bristle end tightly engaging against the opening of the sleeve are enveloped by the bristle carrier material during mould filling and then the sleeve is removed from the bristle carrier.
    Type: Grant
    Filed: September 13, 1989
    Date of Patent: September 3, 1991
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 5011230
    Abstract: Brushware, such as brushes, paintbrushes, brooms or the like, comprising a bristle carrier and thermoplastic material bristle bundles fixed thereto are manufactured in that the ends of the bristle bundles are melted down and shaped to form a solid bolt-like attachment. On it is shaped a contour serving to provide a preferably detachable fixing of the bristle bundle to the bristle carrier, while on or in conjunction with the bristle carrier a corresponding contour is provided for the preferably detachable fixing of the bristle bundle. This makes it possible to fit the bristle bundles in a simple manner to the bristle carrier and to replace same by new bristle bundles in the case of wear or the like.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: April 30, 1991
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4988146
    Abstract: Bristle articles, which comprise a bristle carrier and thermoplastic bristles anchored therein are produced in that holes for receiving the bristles are formed on the bristle carrier, the fixing side ends of the bristles are melted, accompanied by a reduction of their length and the formation of a thickened portion and inserted with the thickened portion first into the holes on the bristle carrier.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: January 29, 1991
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4987634
    Abstract: A tool or implement for cleaning or treating surfaces or for applying media to surfaces has a holder and a deformable disposable working part interchangeably gripped by it, the holder exclusively comprising a sleeve constructed as a stick or grip and a sliding part guided thereon with a handle on its end projecting over the sleeve and with grippers arranged at its other end, which are displaceable from an open position projecting over the sleeve, exclusively by mounting on the working part and pressing by means of the sleeve so as to grip the working part into a use position fixing the latter and by means of the handle are displaceable in the reverse direction for releasing the working part.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: January 29, 1991
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4979782
    Abstract: Process and apparatus for the production of bristle products from plastic. The products comprise a bristle carrier and bristles whose utilization-side ends are substantially unformly rounded and located in a contour differing from that of the bristle side surface of the bristle carrier. The opposite ends of the bristles are fastened to the bristle side surface of the bristle carrier. In a particularly preferred embodiment, the process comprises the steps of: clamping the bristles while their utilization-side ends are in a flat plane; substantially uniformly rounding the utilization-side ends of the bristles while they are clamped in the flat plane; loosening the clamp restraining the bristles and thereafter axially displacing the utilization-side ends of the bristles relative to one another to produce the desired contour; and fastening the opposite ends of the bristles to the bristle carrier.
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: December 25, 1990
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4958402
    Abstract: Bristle articles comprise a bristle carrier and bristles mechanically or thermally fixed thereto and formed from plastic monofilaments, optionally combined into bundles. For increasing the cleaning, distributing or application function of such bristle articles, over at least part of their length the monofilaments are flocked with short plastic fibres. Such bristle articles can be produced in that the surface of the monofilaments is provided with an adhesive or the surface thereof is heated to the soft plastic state and subsequently the fibres are applied to the monofilament in an electrostatic field. Instead of this, it is also possible to subsequently apply the fibres to the bristles connected to the bristle carrier, e.g. by means of an adhesive.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: September 25, 1990
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4954305
    Abstract: Bristle articles can be manufactured in that the bristle carrier and optionally the ends of the bristles are melted and brought together under pressure, or the bristles are introduced into an injection or foaming mould for the bristle carrier and are embedded in the bristle carrier material by injection moulding or foaming. The cycle time of these processes is extremely long as a result of the thermal processes (heating, melting, injection moulding, cooling). It is possible to significantly reduce the same in that the tools for holding or producing the bristle carrier on the one hand and the clamping devices for the bristles on the other are moved on closed paths and the clamping devices at at least one common station are transferred to the path of the tools and at least during the thermal processes are jointly moved with the tools and are subsequently returned to their movement path.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: September 4, 1990
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4936633
    Abstract: Bristle articles with a bristle carrier having on opposite sides at least one hole for receiving individual of bundlewise-combined plastic bristles for forming a bristle system on the opposite sides, is produced in that the holes are made in the bristle carrier in such a way that they pass into one another, that the bristles supplied from both sides to the bristle carrier are melted at the ends thereof facing the bristle carrier and are introduced into the facing holes until engagement with the melt within the holes.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: June 26, 1990
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4893876
    Abstract: Bristle articles, such as brushes, brooms, paintbrushes, combs, mats, etc., comprise a bristle carrier and bristles combined into bundles and joined thereto and which are arranged in the form of several spaced rows. Such a bristle article is produced in that a bristle section is provided in a length, which essentially constitutes the length required for all the bristles of a row, plus the length resulting from the sum of the spacings of the bristles in a row. Accompanied by corresponding shortening of the bristle section, from the latter loops are formed at each bristle position, are drawn in a spacing corresponding to the spacing of the bristles in the row and then all the loops are fixed by one of their ends simultaneously to the bristle carrier, while they are optionally cut at the opposite end.
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: January 16, 1990
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4892698
    Abstract: A method for manufacturing products with bristles, composed of a bristle holder made of pourable or foamable material and plastic bristles anchored therein. The bristles are introduced through channels into a mold for the bristle holder, melted by heat at the end in the mold to form a thickening, and the thickening of each bristle is brought into a sealing fit with the opening of the channel guiding it, possibly leaving an undercut at the thickening, and the mold is then filled with bristle holder material. The bristles and bristle holders can be made from different materials by casting or foaming of the bristle holder, whereby the channels guiding the bristles are sealed off by the thickening so that the bristle holder material cannot escape to the outside and especially cannot have a disadvantageous effect on the bristle shoulder. In addition, a combined force and force-fitted anchoring of the bristles in the bristle holder is ensured.
    Type: Grant
    Filed: March 28, 1986
    Date of Patent: January 9, 1990
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4874115
    Abstract: A dispenser for pasty or flowable media comprises a container with a delivery opening, a piston displaceably guided in the container on the wall thereof and forming the lower seal for the filled material, as well as a guide part formed by the container wall on the otherside of the piston. To permit a portionwise or continuous delivery of the filled material, the container is provided on its guide poart with an axially parallel, downwardly open slot corresponding to the total stroke of the piston and a double-walled slide is provided for the displacement of the piston and which roughly corresponds to the slot length and whose two walls engage on the container wall externally or internally on either side of the slot and whose inner wall is connected at its upper end to the piston and at the lower end to the outer wall.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: October 17, 1989
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4849271
    Abstract: Mats for covering surfaces or for cleaning purposes, particularly doormats, which comprise a basic material, mainly of plastic with a fibrous layer and a support layer fixing the latter and fibres with a bristle-like structure applied to the basic material. The basic material is zonally melted by heating the fibres and optionally the support layer and compressed onto or into the support layer 50 as to form depressions in fibrous layer. The bristles are inserted substantially in parallel to each other in the in depressions and are joined to the compressed basic material by melting their ends or by a homogeneous weld.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: July 18, 1989
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4807938
    Abstract: A process for the manufacture of bristle products, from multifilament bristle strands wound in the form of endless material onto reels. The bristle strands, after unwinding, are supplied to a processing station, where they are fixed to a bristle carrier either in continuous or cut to size form. The removal from the spools takes place by a holding or tensile force acting in timed manner on the bristle strands at the processing station. In order to eliminate the non-uniform lengths of the individual monofilaments due to manufacture or processing and which lead to loop formation during processing, at least during the holding cycles acting on the processing station, a tensile force directed counter to the holding force acts on all the bristle strands. This tensile force is set in such a way that the bristle strands and, preferably, also all the monofilaments within a bristle strand are stretched between the spools and the processing station.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: February 28, 1989
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4749233
    Abstract: A method and apparatus for the manufacture of bristle products, such as paintbrushes, brushes, brooms and the like, which comprise a bristle carrier and bristle bundles fixed thereto. The bristles are drawn from a continuous strand on a storage reel and pass through a mould, so that the strand is given a random cross-sectional shape. Downstream of the mould, the reshaped continuous strands are fixed to a bristle carrier and then bristles are cut to the desired length, so that the bristle bundles can be given different shapes and the bristle material can be continuously processed from the reel. The cross-sectional shape of the individual bristle bundles can be adapted to the particular intended use.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: June 7, 1988
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4646381
    Abstract: In a toothbrush with a body providing a brush head and a handle and bristles fastened to the brush head, a hygienic, bacteria-avoiding construction is obtained in that the body and bristles are made of the same material and are welded to one another so that the brush head is free of empty space. Further, with this construction a larger number of bristles can be applied to achieve a better cleaning and massaging effect and the dimensions of the brush head can be reduced.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: March 3, 1987
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4637660
    Abstract: In a method for connecting bristles to a bristle carrier, each of which is made of thermoplastic material, at least the ends of the bristles are heated so that a reversal of the molecules from an oriented stretched form to a non-oriented balled form takes place and thereby forms a thickening on the bristle ends, upon which the bristles with their thickened ends are inserted into the melted bristle carrier until the melt of the carrier flows behind the thickened end whereby after hardening of the melt an interlocking shape connection is obtained between the bristles and the bristle carrier which joint may also include, in the case of corresponding work material pairs, a material bonding, the interlocking shape connection being independent of the type of materials used for the two parts.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: January 20, 1987
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch
  • Patent number: 4589791
    Abstract: A device for applying liquid agents by synthetic bristles which, combined into bundles, are fixed on a plastic supporting base, with the supporting base being thin-walled and having several openings at least one of which is surrounded by a bundle of bristles. The bristles are butt-welded onto the supporting base, with the bristles leaving open a cross section of the opening and forming a duct tapering off toward the bristle ends, which duct leads or supplies the agent into a working area of the device.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: May 20, 1986
    Assignee: Coronet-Werke Heinrich Schlerf GmbH
    Inventor: Georg Weihrauch