Patents by Inventor Heinz Grunewald

Heinz Grunewald 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: 6499908
    Abstract: A locking system with at least one locking element has a sleeve (2) with an inner groove (3) and an outer groove (4), which lie in a common plane and encircle at least one half of the circumference, the outer groove (4) accommodating a radially pre-stressed spring washer (9) forming an open sector in the circumferential direction between the legs (12) on either side, which are pointedly bent towards the inside and extend through assigned radial openings (5) of the sleeve (2) into the inner groove (3).
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: December 31, 2002
    Assignee: Hilti Aktiengesellschaft
    Inventors: Udo Hauptmann, Heinz Grünewald
  • Publication number: 20020006310
    Abstract: A locking system with at least one locking element has a sleeve (2) with an inner groove (3) and an outer groove (4), which lie in a common plane and encircle at least one half of the circumference, the outer groove (4) accommodating a radially pre-stressed spring washer (9) forming an open sector in the circumferential direction between the legs (12) on either side, which are pointedly bent towards the inside and extend through assigned radial openings (5) of the sleeve (2) into the inner groove (3).
    Type: Application
    Filed: July 12, 2001
    Publication date: January 17, 2002
    Inventors: Udo Hauptmann, Heinz Grunewald
  • Patent number: 4478060
    Abstract: The invention relates to apparatus for the simultaneous laundering of different laundry items, for example white and multicolored laundry batches, in a continuous washing machine, as well as a continuous washing machine appropriate therefor, comprising a washing drum whose washing compartments are separated from each other and are in each case connected to another washing compartment by a countercurrent conduit, whereby the countercurrent conduits (10) in each case are connected to a shut-off means (4) controllable with regard to their opening and closing condition, the washing compartments (23 C to K) moreover are connected in each case via a conduit section (10) having a controllable shut-off means (2) to a common connecting conduit section (12) which in each case are provided between two adjacent connecting conduits (11) with a correspondingly controllable shut-off means (3), and whereby a program-controlled control installation is present by means of which the shut-off means (2, 3, 4) are to be actuated i
    Type: Grant
    Filed: August 5, 1981
    Date of Patent: October 23, 1984
    Assignee: Engelhardt & Forster KG
    Inventor: Heinz Grunewald
  • Patent number: 3995458
    Abstract: The invention relates to a laundry machine comprising a washing drum which is rotatable about its longitudinal axis; the generated surface of the drum being formed with apertures through which washing liquid can flow. The drum is supported, preferably by an endless retaining element, such that an outer surface of the drum is spaced apart from an inner surface portion of a casing. At least one partition extends substantially radially inside the drum thereby dividing the drum into discrete segments. The partition has an aperture and conveyor means are disposed inside the drum for conveying laundry from one segment of the drum to an adjacent segment thereof via the aperture. A flange extends substantially radially outwardly from the drum, and from between each pair of adjacent segments thereof, thereby dividing the gap between the drum and the casing into pockets or chambers, means being provided for obtaining a fluid-tight seal between each flange and the casing.
    Type: Grant
    Filed: February 24, 1975
    Date of Patent: December 7, 1976
    Assignee: Engelhardt & Forster
    Inventors: Heinz Grunewald, Jurgen Wellbrock