Patents by Inventor Rudolf Maass

Rudolf Maass 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: 4790240
    Abstract: The housing of a machine for brewing coffee, tea or other hot beverages confines or carries a water container, a riser which conveys water from the container past an electric heater and into a manifold, and a filter holder. The manifold has two sections which are separably connected to each other to define an inlet connected with the riser, a first outlet which can deliver hot water to the filter holder, and a second outlet which can return water into the container. A disc-shaped valving element has a central portion clamped between the two sections of the manifold and a marginal portion which can snap over from a first position, in which the valving element seals the inlet of the manifold from the first outlet, to a second position in which the valving element seals the inlet from the second outlet of the manifold.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: December 13, 1988
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventors: Stefan Henn, Rudolf Maass
  • Patent number: 4662084
    Abstract: The housing of the apparatus which supplies conditioned air into the plenum chamber of the collapsible hood of an electric hair dryer has integral internal ribs which define a channel for the flow of air past an air heating device and toward an impeller which is driven by an electric motor and conveys conditioned air into the hood. Four walls of the housing have air admitting ports, and the ribs define with the bearing for the electric motor an annular gap for admission of air from the interior of the housing into an intermediate portion of the channel. The inlet of the channel is defined by outwardly flaring arcuate end portions of the ribs.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: May 5, 1987
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Rudolf Maass
  • Patent number: 4658511
    Abstract: An electric hair dryer wherein a collapsible hood defines one or more plenum chambers for heated air and has a foraminous inner panel which is adjacent to the hair when the hood is placed over the head of the wearer. The hood has a hollow extension which is adjacent to the chest of the wearer and is separably connectable with the slotted detachable cover of a housing for the electric motor which drives a rotor for supplying heated air into the plenum chamber or chambers. The rotor is installed in the cover and is disposed downstream of an air heating unit which is mounted in the interior of a hollow cylindrical or frustoconical air guide and surrounds a tube for admission of cool atmospheric air into the space around the motor. The bottom wall, the front wall and the two lateral walls of the housing are formed with ports which admit atmospheric air into the air guide as well as into the tube.
    Type: Grant
    Filed: August 20, 1985
    Date of Patent: April 21, 1987
    Assignee: Robert Krups Stiftung & Co. KG
    Inventors: Gotthard C. Mahlich, Rudolf Maass
  • Patent number: 4206345
    Abstract: An electrically heatable broiler, browner and waffle maker comprises a base part including a hot plate and a top part also including a hot plate, the two parts being interconnected by an articulated hinge joint including an extendable linking member and a plurality of stop surfaces permitting different angular positions of the top part relative to the base part.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: June 3, 1980
    Assignee: Robert Krups
    Inventors: Rudolf Maass, Hans-Jurgen Mehnert
  • Patent number: 4177703
    Abstract: A salmon slicing machine comprising a frame, a stationary sun gear and a rotatable shaft mounted on said frame, a stop plate and circular supporting parts having circular grooves mounted for rotation on said rotatable shaft, circular knives positioned under said circular supporting parts and mounted for horizontally rotating and orbiting around said stationary sun gear, a hydraulic piston to adjust said stop plate relative to said circular knives and a feeding mechanism for the material to be sliced inclined at an acute angle to the plane of rotation of the knives.
    Type: Grant
    Filed: April 17, 1978
    Date of Patent: December 11, 1979
    Inventors: Adolf J. J. F. Cavier, Rudolf Maass
  • Patent number: D261344
    Type: Grant
    Filed: September 13, 1979
    Date of Patent: October 20, 1981
    Assignee: Robert Krups Stiftung & Co. KG
    Inventor: Rudolf Maass
  • Patent number: D265712
    Type: Grant
    Filed: January 30, 1980
    Date of Patent: August 10, 1982
    Assignee: Robert Krups Stiftung & Co. AG
    Inventor: Rudolf Maass
  • Patent number: D292325
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: October 13, 1987
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Rudolf Maass
  • Patent number: D292326
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: October 13, 1987
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Rudolf Maass
  • Patent number: D293873
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: January 26, 1988
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Rudolf Maass
  • Patent number: D296860
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: July 26, 1988
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Rudolf Maass
  • Patent number: D296976
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: August 2, 1988
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Rudolf Maass
  • Patent number: D308853
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: June 26, 1990
    Assignee: Robert Krups Stiftung & Co. KG.
    Inventor: Rudolf Maass
  • Patent number: D313145
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: December 25, 1990
    Assignee: Robert Krups Stiftung & Co. KG
    Inventors: Rudolf Maass, Edgar Rixen