Patents by Inventor Wilfried Rolf

Wilfried Rolf 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: 7325551
    Abstract: A hair-shaping appliance includes a hand-held portion, a hair-shaping element extending from the hand-held portion, an evaporator mounted within the shaping element, a tank mounted within the hair-shaping element in a moveable manner, a dosing device connected to the tank, and an actuating button connected to the tank. The actuating button and tank are connected such that movement of the actuating button displaces the tank along a longitudinal direction of the appliance (e.g., towards and away from the evaporator). In addition, the actuating button is positioned on the hand-held portion of the appliance and is positioned to allow single-handed operation.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: February 5, 2008
    Assignee: Braun GmbH
    Inventors: Friedrich Henninger, Robert Jung, Dieter Liebenthal, Wilfried Rolf
  • Publication number: 20040244810
    Abstract: A hair-shaping appliance includes a hand-held portion, a hair-shaping element extending from the hand-held portion, an evaporator mounted within the shaping element, a tank mounted within the hair-shaping element in a moveable manner, a dosing device connected to the tank, and an actuating button connected to the tank. The actuating button and tank are connected such that movement of the actuating button displaces the tank along a longitudinal direction of the appliance (e.g., towards and away from the evaporator). In addition, the actuating button is positioned on the hand-held portion of the appliance and is positioned to allow single-handed operation.
    Type: Application
    Filed: April 28, 2004
    Publication date: December 9, 2004
    Inventors: Friedrich Henninger, Robert Jung, Dieter Liebenthal, Wilfried Rolf
  • Patent number: 6222988
    Abstract: The invention is directed to an electrically powered appliance for the treatment of hair, in particular a hair dryer, having a fan motor for generating a current of air and a heater unit for heating the air current, and a housing with an air inlet port and an air outlet port as well as a connector element, for connecting the hair dryer to an implement for hair treatment. This implement is equipped, particularly for the styling and/or drying of hair, with an electrical load, for example, an electric motor, and is attachable to the air outlet port of the hair dryer. The connector element includes at least one terminal device for electrical connection to a voltage-carrying component in the hair dryer. The terminal device electrically at selected locations is connected with the heater unit and is disposed essentially outside the heater unit.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: April 24, 2001
    Assignee: Braun GmbH
    Inventors: Jürgen Behrendt, Wilfried Rolf
  • Patent number: 6035097
    Abstract: An electrical heating unit, particularly for a hair drier, comprises a first wire heating element, in particular a spiral coil wire heating element (2) having a heat conductor support comprising at least one support plate (4, 5, 6), and a heat conductor winding (7) arranged thereon. This spiral coil wire heating element serves to heat the stream of air flowing through the hair drier. At least one second wire heating element is provided, serving the function of adapting the electrical voltage for a further electrical load, particularly as a series resistor, for a direct-current motor fitted with an impeller to produce the stream of air. The second wire heating element (3) comprises a frame-type heat conductor support (8) and a heat conductor winding (9) arranged thereon which fills the free area of cross section of the heat conductor support (8). Further, the second heating element (3) is secured to the first heating element (2).
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: March 7, 2000
    Assignee: Braun GmbH
    Inventors: Jurgen Behrendt, Boris Wonka, Wilfried Rolf, Robert Jung
  • Patent number: 5810911
    Abstract: The invention is directed to a filter device (10) and to a method of cleaning such a filter device for an electrically powered air-moving hair-care appliance, in particular for a hair dryer, a hot-air curling brush or the like, with a filter element (12) having an inner and an outer side (25, 26), in which the inner side (25) of the filter element (12) is arranged in the area of an air entrance opening of the appliance. The filter element (12) is configured as a type of fabric, perforated foil or the like of small thickness, comprising in particular a screening fabric made of a plastic material.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: September 22, 1998
    Assignee: Braun Aktiengesellschaft
    Inventors: Jurgen Behrendt, Hans-Jurgen Golob, Robert Jung, Wilfried Rolf, Boris Wonka, Bjorn Kling
  • Patent number: 5720107
    Abstract: The invention is directed to an air-moving pulsator (12) for an electric hair dryer (10) which, for the purpose of creating a pulsing action in the air stream, includes a rotor (20, 41) rotatably supported in a substantially tubular housing portion (13) and having an impeller (11) adapted to be impacted by the air stream exiting from the hair dryer (10), wherein there is arranged upstream of the rotor (20, 41), as seen when looking in the discharge direction of the air stream, a stator (38) provided with selectively moveable vanes for varying the pulsation frequency and adapted to impart rotation to the air stream about its axis. In a preferred embodiment, stator (38) is provided with air-directing blades (28) pivotally mounted on radially oriented spokes (26), and the air-directing blades (28) carry cam follower pins (31) at the ends of arms (29). A cam ring (32) is rotatably secured by outer ring (33) on the housing portion (13) and has helical camming slots (36) to cam the pins (31).
    Type: Grant
    Filed: July 25, 1996
    Date of Patent: February 24, 1998
    Assignee: Braun Aktiengesellschaft
    Inventors: Wilfried Rolf, Karl Herzog
  • Patent number: 5715847
    Abstract: The invention is directed to a hair styling implement adapted to be attached to an air outlet opening of a hair dryer and equipped with a housing and a plurality of hair pickup elements and an adjusting element that is movable relative to the housing. In this arrangement, at least one locking member is provided which is adapted to be located in at least two positions; in a first position, the adjusting member is lockable with the housing, and in a second position in which the hair styling implement is attached to the dryer, the housing is lockable with the hair dryer.
    Type: Grant
    Filed: December 15, 1995
    Date of Patent: February 10, 1998
    Assignee: Braun Aktiengesellschaft
    Inventors: Wilfried Rolf, Dieter Liebenthal
  • Patent number: 5448677
    Abstract: A hair dryer has a housing including an air inlet opening and an air exit opening for passage of an air stream. The housing accommodates a blower structure and a heater, and the air inlet opening has associated to it a filter element. Provided in the housing are a detector producing an output signal in dependence upon at least one temperature prevailing in the housing and having associated thereto a signaling device which is actuatable on attainment of a predeterminable threshold value of the output signal. The signaling device indicates to the user of the hair dryer that the filter element requires cleaning or replacement.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: September 5, 1995
    Assignee: Braun Aktiengesellschaft
    Inventors: Rudiger Fell, Wilfried Rolf, Boris Wonka
  • Patent number: 4803313
    Abstract: The invention is directed to an electric switch having a shaft (33) with a switching coulisse (36) comprising two circular segments, with control cams (60, 64) being disposed on the one circular segment and ratchet elements (66) being disposed on the other circular segment, which cooperate with a detent spring (75) and a contact spring (70). Because the circular segments are arranged i1 a common plane, a highly compact switch is obtained.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: February 7, 1989
    Assignee: Braun Aktiengesellschaft
    Inventor: Wilfried Rolf