Patents by Inventor Horst Zinnsmeister

Horst Zinnsmeister 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).

  • Sewing machine with multidirectional upper and lower feed devices
    Patent number: 4848254
    Abstract: A sewing machine is provided with a upper and a lower feed device with which a workpiece consisting of several plies can, when making arched and/or corner type seams, be transported in always constant position of orientation without mutual displacement of the plies. For this purpose the feed direction of both feed devices can be varied either by changing their direction of action or by geometric addition of at least two motion components.
    Type: Grant
    Filed: September 15, 1987
    Date of Patent: July 18, 1989
    Assignee: Pfaff Industriemaschinen GmbH
    Inventors: Fritz Krowatchek, Horst Zinnsmeister