Patents by Inventor Bob Ohmstede

Bob Ohmstede 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 and apparatus for pulling tubes from heat exchanger baffles
    Patent number: 4125928
    Abstract: Ways and means are disclosed for removing old tubes from a tube bundle, consisting mainly of an array of transversally spaced tubes with tube sheets at their ends and baffles supporting the tubes of intermediate sites. The tubes are cut and driven from the respective tube sheets, then pulled out of the baffles. The apparatus includes a hydraulically reciprocable gripper that feeds an automatic throw stacker for pulling out tubes even if they are deformed, and for propelling them away from the apparatus.
    Type: Grant
    Filed: August 17, 1977
    Date of Patent: November 21, 1978
    Assignee: Ohmstede Machine Works, Inc.
    Inventors: Don Cawley, Bob Ohmstede