Patents Assigned to Avraham Rozenvasser
  • Patent number: 7444801
    Abstract: Methods of weaving decorative rope chains are disclosed. Chain links having gaps are assembled with all of the gaps oriented in the same direction. Accordingly, the links are interconnected one into the next in a helix configuration with each of the gaps facing in the same direction. One or more wire strands may be intertwined in the valleys of the helix configuration and remain in place to retain the helix configuration. The resulting rope chain itself may be used to form links for forming new types of chains.
    Type: Grant
    Filed: August 4, 2005
    Date of Patent: November 4, 2008
    Assignee: Avraham Rozenvasser
    Inventors: David Rosenwasser, Avraham Rosenwasser
  • Patent number: 7340878
    Abstract: A method of forming a jewelry product includes forming an initial partially formed chain having a plurality of portions which are displaceable relative to one another, and a strand of wire that retains the portions together but does not limit their displacement. The initial partially formed chain is further wound around a mandrel and heated. During heating, the portions of the initial partially formed chain are being set into the shape of the mandrel while wire portions are prevented from displacing relative to one another. This final shaped spiral is then cut into individual links which are then formed into the jewelry product.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: March 11, 2008
    Assignee: Avraham Rozenvasser
    Inventors: David Rozenvasser, Avraham Rozenvasser