Patents by Inventor David B. Luttenberger

David B. Luttenberger 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).

  • Heat exchanger
    Patent number: 4738310
    Abstract: A glass tube heat exchanger including a sealing sleeve comprising at least one hydraulic sealing section, an intermediate sealing section and an interior sealing section is disclosed. The hydraulic sealing section has a triangular cross section including one obtuse angle formed by two legs, one of which extends radially outwardly from the longitudinal axis of the seal. The intermediate sealing section comprises a generally cylindrical shaped body and at least one, and preferably two, toroidal belts. The interior sealing section comprises a lip adapted to seal tightly against the glass tube and a flange adapted to seal against the tube sheet. Preferably, the interior sealing section is a mirror image of the hydraulic sealing section.
    Type: Grant
    Filed: August 26, 1985
    Date of Patent: April 19, 1988
    Assignee: United McGill Corporation
    Inventors: David B. Luttenberger, James R. Shook