Patents by Inventor Otto Ewald

Otto Ewald 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: 4363498
    Abstract: A cross country ski binding has a support element attachable directly to a ski for engaging a forwardly extending boot sole extension, and is also provided with latching mechanism for latching the sole extension to the supporting element, under imposition of spring forces. The cross country ski binding may include spring biased detent members engageable into detent provisions provided directly on the boot sole extension, such that the forward part of the ski boot is automatically locked in position upon insertion of the boot sole extension into the support element. Preferred embodiments of the invention include those accommodating an axial movement of the boot sole extension into the support element and latching mechanism, as well as embodiments wherein the boot sole extension is placed downwardly over a pivot pin forming part of the holding mechanism. Also, certain embodiments of the invention include additional locking levers for locking the latching mechanism in a latched position.
    Type: Grant
    Filed: July 25, 1977
    Date of Patent: December 14, 1982
    Assignee: Geze GmbH
    Inventors: Peter Biermann, Otto Ewald, Rudi Feucht, Manfred Schmidt
  • Patent number: 4219215
    Abstract: A cross-country ski binding is provided which includes a boot sole holding member engageable with a boot sole extension to hold the same in position on a ski. Guide structure is provided at a bearing member fixed to the ski, which cooperates with a corresponding guide part of the holding member to guide the holding member to move in a forward longitudinal direction during its movement into the sole-holding position so that the boot sole is pulled forwardly into the binding as it is clamped into position.
    Type: Grant
    Filed: September 26, 1977
    Date of Patent: August 26, 1980
    Assignee: Vereinigte Baubeschlagfabriken Gretsch & Co. GmbH
    Inventors: Peter Biermann, Otto Ewald, Rudi Feucht, Manfred Schmidt
  • Patent number: 4191396
    Abstract: A cross country ski binding includes a support element which has a rear part clampingly engageable with a forward extension of a ski boot sole and a front part which is fixedly attachable to a ski. In order to accommodate angular movement between the front and rear parts, a connecting part is provided which permits such angular movement about a cross axis extending crosswise of the longitudinal extent of the ski when the binding is in an in-use position. The cross axis may be formed by hinge pin connections between the front and rear parts or by portions of a leaf spring or a multiplicity of leaf springs interconnecting the front and rear parts. Resilient members such as springs, rubber cushions, and the like, are interposed between the front and rear parts to continuously resiliently bias the same in the direction corresponding to a flat position of the ski boot on the ski.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: March 4, 1980
    Assignee: Vereinigte Baubeschlagfabriken Gretsch and Company GmbH
    Inventors: Peter Biermann, Otto Ewald
  • Patent number: 3940488
    Abstract: Compositions and methods of using aminoalkyldithiocarbamic acids of the formula ##EQU1## in which Alk is an alkylene radical of 2 to 6 carbon atoms,Some of which are new, which possess strong fungicidal and animal-repellent properties.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: February 24, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Paul-Ernst Frohberger, Otto Ewald Urbschat, deceased, Gunther Hermann