Patents by Inventor Manfred Riha

Manfred Riha 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: 4022045
    Abstract: A tube bending apparatus has a bed, a reciprocal feed carriage, power means to reciprocate the carriage, a first guide means at one end of the bed to receive the outer end of a first tube to be bent, mounted on said bed. Said apparatus includes a heating element on said bed outwardly of said first guide means adapted to surround the tube. The carriage is adapted to operatively engage the inner end of the tube for moving it outwardly of the bed. A bending arm at one end is pivotally mounted adjacent said one end of said bed and has gripping elements thereon to operably engage the outer end of the tube. The present improvement comprises a second guide means at the other end of said bed adapted to alternately receive the outer end of a second tube. A second heating element is mounted on said bed outwardly of said second guide means.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: May 10, 1977
    Assignee: Mannesmannrohen-Werke AG
    Inventor: Manfred Riha