Patents by Inventor Helmut Durr

Helmut Durr 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: 6190184
    Abstract: The invention is directed to an electric appliance for personal use such as a dry shaving apparatus, a hair cutting machine or epilator, having a housing to accommodate an electric motor, a storage cell charging circuitry, at least one rechargeable storage cell designed to be connected to the electric motor, and a connector compartment in which a connector equipped with connector pins is pivotally mounted, wherein the connector pins are movably carried in a connector housing surrounding the connector pins, wherein the connector housing with the connector pins therein is arranged for pivotal movement out of and into the connector compartment, and wherein, with the connector in a position in which it is pivoted out of one of the broad sides of the housing, provision is made for the connector pins arranged side by side parallel to said broad side to be movable out of and into the connector housing by means of an actuating element movably disposed in the interior of the connector housing.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: February 20, 2001
    Assignee: Braun Aktiengesellschaft
    Inventors: Jochen Cimbal, Thomas Schamberg, Helmut Dürr
  • Patent number: 5507095
    Abstract: The invention is directed to an electric shaving apparatus having a short-hair cutter assembly (2) arranged on a housing (1) and at least one control switch (9) slidably mounted on the housing (1) for setting a long-hair trimmer assembly (4) from an "Off" position to at least one or several positions of use. The long-hair trimmer assembly (4) is adjustably mounted on the housing (1) of the shaving apparatus in such a way that it follows the surface of the skin.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: April 16, 1996
    Assignee: Braun Aktiengesellschaft
    Inventors: Matthias Wetzel, Klaus Oprach, Bernd Tewes, Reinhold Eichhorn, Helmut Durr
  • Patent number: 5343621
    Abstract: The invention is directed to an electric shaving apparatus having a housing and a shaving head assembly which is adapted to pivot relative to the housing about a pivotal axis Z and is comprised of a shaving head frame, a shaving plane formed by at least one outer cutter having arcuate extensions to the longitudinal sides of the shaving head frame, and of at least one inner cutter operatively associated with the outer cutter and driven by a drive mechanism, wherein the outer cutter is arranged in an outer cutter frame member and the outer cutter frame member is mounted in the shaving head frame so as to be pivotal about the pivotal axis Z.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: September 6, 1994
    Assignee: Braun Aktiengesellschaft
    Inventors: Gerhard Hildebrand, Gunther Seidel, Hans-Eberhard Heintke, Klaus Ramspeck, Reinhold Eichhorn, Helmut Durr, Wolfgang Franke, Gebhard Braun, Manfred Ohle, Roland Ullmann
  • Patent number: 5289636
    Abstract: The invention is directed to an electric shaving apparatus with a first slide switch slidably arranged on a housing for operating a short-hair cutter assembly K1, K2, with a long-hair trimmer L displaceable by means of a slider as well as a second adjustable slide switch for operating at least one of the cutters. The second slide switch automatically follows in a defined range the control movement of the first slide switch into at least one further control position. The second slide switch is then movable into a cutter assembly locking position in opposition to the direction of the movement of the first slide switch.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: March 1, 1994
    Assignee: Braun Aktiengesellschaft
    Inventors: Reinhold Eichhorn, Gerhard Schafer, Klaus Oprach, Sigrun Hickel, Helmut Durr
  • Patent number: 5257456
    Abstract: The invention is directed to an electric shaving apparatus having a housing and a shaving head assembly which is adapted to pivot relative to the housing about a pivotal axis Z and is comprised of a shaving plane formed by at least one outer cutter having arcuate extensions to the longitudinal sides of the shaving head frame, and of at least one inner cutter operatively associated with the outer cutter and driven by a drive mechanism, wherein the inner cutter is coupled to the drive mechanism arranged in the housing by means of a coupling member in a manner permitting pivotal movement about the pivotal axis Z.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: November 2, 1993
    Assignee: Braun Aktiengesellschaft
    Inventors: Wolfgang Franke, Helmut Durr, Gebhard Braun, Reinhold Eichhorn
  • Patent number: 5245754
    Abstract: The invention is directed to a dry shaving apparatus comprising a pair of parallel, elongate shaving heads having inner cutters operatively associated with an outer cutter and arranged on a common coupling member which is coupled to a drive member of an electric drive mechanism, wherein at least one of the inner cutters is movably coupled to the coupling member transversely to the oscillating direction of the inner cutters.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: September 21, 1993
    Assignee: Braun Aktiengesellschaft
    Inventors: Hans-Eberhard Heintke, Gerhard Hildebrand, Manfred Ohle, Gunther Seidel, Klaus Ramspeck, Wolfgang Franke, Reinhold Eichhorn, Helmut Durr, Gebhard Braun
  • Patent number: 5235749
    Abstract: The invention is directed to an electric shaving apparatus having a housing and a shaving head assembly which is adapted to pivot relative to the housing about a pivotal axis Z and is comprised of a shaving head frame, a shaving plane formed by at least one outer cutter having arcuate extensions to the longitudinal sides of the shaving head frame, and of at least one inner cutter operatively associated with the outer cutter and driven by a drive mechanism, wherein the outer cutter is arranged in an outer cutter frame member and the outer cutter frame member is mounted in the shaving head frame so as to be pivotal about the pivotal axis Z.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: August 17, 1993
    Assignee: Braun Aktiengesellschaft
    Inventors: Gerhard Hildebrand, Gunther Seidel, Hans-Eberhard Heintke, Klaus Ramspeck, Reinhold Eichhorn, Helmut Durr, Wolfgang Franke, Gebhard Braun, Manfred Ohle, Roland Ullman
  • Patent number: 5201781
    Abstract: The invention is directed to a dry shaving apparatus comprising a pair of parallel shaving heads having their inner cutters resiliently mounted on a common coupling member which is adapted to be coupled to the drive member of the electric drive by means of a plug-in connection and is detachable against the pressure of a spring element.
    Type: Grant
    Filed: February 6, 1992
    Date of Patent: April 13, 1993
    Assignee: Braun Aktiengesellschaft
    Inventors: Albrecht Jestadt, Helmut Durr, Hans-Eberhard Heintke
  • Patent number: 4777893
    Abstract: A presser foot assembly for use with a workpiece support in a sewing machine having a sole plate, a body for supporting the sole plate in a position for pressing material to be sewn onto a workpiece support, and a lead-in sole part. The assembly has a pin for pivotally connecting the lead-in sole part to the sole plate, and a spring for moving the lead-in sole part between a first position adjacent the workpiece support and a second position spaced from the workpiece support.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: October 18, 1988
    Assignee: Union Special G.m.b.H.
    Inventors: Helmut Bauer, Helmut Durr, Milan Petrovic
  • Patent number: 4772666
    Abstract: Curable mixtures based on(A) compounds containing 1,3-dioxolan-2-one groups, groups capable of reaction with isocyanate groups and, if appropriate, further groups,(B) polyisocyanates and/or aminoplast resins and(C) if appropriate, further curing compounds.The coatings obtainable from these mixtures are distinguished above all by rapid curing and by good solvent stability and good adhesive power.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: September 20, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Christoph Just, Helmut Durr, Gerhard Brindopke
  • Patent number: 4570499
    Abstract: In a swing bridge for conversion of rotary motion of an eccentric driven by a motor shaft into a reciprocating movement of the power output for a tool in electrically powered appliances, consisting of a bridge yoke comprising the power output and mounted on two strip-shaped film hinges and a connecting rod coupled to the swing bridge and the eccentric, aligned parallel to the bridge yoke, one of the strip-shaped film hinges and the corresponding wall of the bridge yoke are each provided with an opening through which the connecting rod is guided in such fashion that the connecting rod head coupled with the eccentric lies outside the space defined by the bridge yoke and the film hinge and whereby the bridge yoke forms a rigid unit with the formed walls.
    Type: Grant
    Filed: April 10, 1984
    Date of Patent: February 18, 1986
    Assignee: Braun Aktiengesellschaft
    Inventor: Helmut Durr
  • Patent number: 4383055
    Abstract: Preparation of heat-curable, water-dilutable coating compositions based on (A) epoxy resins free from amino groups, (B) an aqueous dispersion or solution of saturated polyester resins or the modification products thereof with oils, (C) organic cross-linking agents and optionally (D) pigments and/or conventional adjuvants, in specific proportions, these components being processed together in one or more stages, while being comminuted from their original particle size, to form a homogeneous coating composition which has a particle size of less than 100 .mu.m, and the use of the coating compositions thus obtained as coating agents, particularly for coating metal substrates, by the use of current-free methods of application or electrostatic spraying.
    Type: Grant
    Filed: October 7, 1981
    Date of Patent: May 10, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Gerhard Johannes, Helmut Durr, Dieter Plath, Diedrich Schneider, Klaus Esser
  • Patent number: 4322325
    Abstract: A water-dilutable binder composition for the preparation of a metallic base paint comprising(A) a water-soluble condensation product derived from(a) a saturated or unsaturated oil-free polyester containing OH-groups having been prepared from at least one polycarboxylic acid and at least one polyhydric alcohol,(b) a polycarboxylic acid mixture containing trimellitic acid,(c) at least one epoxidized oil, and(d) a basic compound;(B) an additive selected from the group consisting of one or more metal powders, one or more metal powders in combination with at least one other pigment, and one or more metal powders in combination with at least one other dyestuff; and(C) at least one water-miscible solventa process for the preparation of a two-layer metallic paint coating with said composition.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: March 30, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Esser, Helmut Durr, Dieter Plath
  • Patent number: 4039493
    Abstract: Low-viscosity high-solids-content melamine-formaldehyde condensates having high reactivity, low content of free formaldehyde and good compatibility, are prepared by effecting condensation in an alcohol having up to 3 carbons, then concentrating the condensate and heating the concentrate in a higher alcohol having from 3 to 18 carbons and again concentrating. The final product cures on heating to a hard glossy film and can be added to other uncured resins to improve the hardness of their films.
    Type: Grant
    Filed: June 25, 1975
    Date of Patent: August 2, 1977
    Assignee: Cassella Farbwerke Mainkur Aktiengesellschaft
    Inventors: Manfred Schon, Helmut Durr, Dieter Plath, Karlfried Keller, Walter Michel