Patents by Inventor Manfred Fothen

Manfred Fothen 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).

  • Method of wave-soldering assembled units
    Patent number: 5720426
    Abstract: A method of wave-soldering assembled units which are conducted over a soldering unit by a transport device including propelling solder against the assembled units in a turbulent zone by a first turbulent soldering wave at an acute angle in the transport direction and subsequently by a quiet soldering wave approximately at right angles thereto. To avoid cold soldered spots and shadow regions, the method includes propelling solder against the assembled units by a second turbulent wave at an acute angle against the transport direction in the turbulent zone. A device for wave-soldering assembled units is also provided.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: February 24, 1998
    Assignee: U.S. Philips Corporation
    Inventor: Manfred Fothen