Patents by Inventor Helmut Roland

Helmut Roland 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: 12228803
    Abstract: A computer-implemented method of determining a base curve value representing a base curve for a front surface of a spectacle lens is disclosed. The method includes receiving individual prescription data and determining the base curve value for the front surface of the spectacle lens based on the prescription data. In particular, the base curve value is calculated from the received prescription data based on a functional relationship between one or more values included in the prescription data and the base curve value.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 18, 2025
    Assignee: Carl Zeiss Vision International GmbH
    Inventors: Markus Welscher, Helmut Wietschorke, Ralf-Roland Sauer, Christoph Winter
  • Patent number: 11045975
    Abstract: A honeycomb extrusion die comprising at least some slots (308) each with a divot (312) spaced toward a discharge surface (324) from a feedhole-slot intersection (332) and a wide portion at the discharge surface extending into the die body (358) to the divot (312) to strengthen a peripheral region of a honeycomb extrudate in a reinforcement region, and a bulk nominal section corresponding to a bulk region of the honeycomb body.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: June 29, 2021
    Assignee: Corning Incorporated
    Inventors: John Wilbur Allard, Thomas William Brew, Tushar Gulati, Helmut Roland Letzel, Min Shen
  • Publication number: 20200269466
    Abstract: An extrusion apparatus (200) and method to extrude ceramic precursor batch through a die to form a honeycomb extrudate (100), and an apparatus assembly method, are provided. The apparatus comprises a tail ring device (202) comprising a tapered inner opening configured to funnel the batch downstream from upstream extrusion hardware, wherein an inner surface (318,320) of the tail ring device (202) comprises no pockets or protrusions to disrupt batch flow; a bow control device (204) disposed on the tail ring device (202) comprising an aperture (414) defined by shutter plates (S1-S4) to control a bow of the honeycomb body extrudate (100) formed from the batch flowing through the die by adjustment of the shutters (S1-S4); and an edge flow control device (206) disposed on the bow control device (204) comprising edge plates (816) configured to protrude into the batch to control an edge flow of the batch flowing to a periphery of the die.
    Type: Application
    Filed: November 18, 2016
    Publication date: August 27, 2020
    Applicant: Corning Incorporated
    Inventors: Jan HODEL, Viktor KAMMERER, Helmut Roland LETZEL
  • Publication number: 20190054654
    Abstract: A honeycomb extrusion die comprising at least some slots (308) each with a divot (312) spaced toward a discharge surface (324) from a feedhole-slot intersection (332) and a wide portion at the discharge surface extending into the die body (358) to the divot (312) to strengthen a peripheral region of a honeycomb extrudate in a reinforcement region, and a bulk nominal section corresponding to a bulk region of the honeycomb body.
    Type: Application
    Filed: February 13, 2017
    Publication date: February 21, 2019
    Inventors: John Wilbur Allard, Thomas William Brew, Tushar Gulati, Helmut Roland Letzel, Min Shen
  • Publication number: 20160072358
    Abstract: A device for an uninterrupted supply of energy and an energy store for kinetic energy include a housing, a shaft which has a non-rotatably connected inner rotor, and an outer rotor, in particular a drum-shaped outer rotor, which surrounds the inner rotor at least in some areas and which is rotatably mounted relative to the shaft, the inner and/or outer rotor having at least one electric coil. The outer rotor, which is rotatably supported on the housing in a mechanical manner on both sides, is held without mechanical support towards the shaft.
    Type: Application
    Filed: April 22, 2014
    Publication date: March 10, 2016
    Applicant: Hitzinger GmbH
    Inventors: Helmut ROLAND, Christian BILL
  • Patent number: 4825138
    Abstract: In a brushless synchronous motor in which a short-circuited protective winding (9) is associated with the field winding (2) of the rotor the starting conditions are improved in that the protective winding (9) consists of two winding sections (10, 11), which have different numbers of turns and are either wound in mutually opposite senses or are wound in the same sense but connected in opposition.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: April 25, 1989
    Assignee: Dipl. Ing. Hitzinger Gesellschaft mbH
    Inventors: Hubert Platzer, Helmut Roland