Patents by Inventor Alvin E. Herz

Alvin E. Herz 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).

  • Apparatus for agitating liquids
    Patent number: 4252444
    Abstract: An apparatus and method are provided for agitating liquids, maintaining solids in suspension and breaking up surface ice on waterways is provided in which a base plate having a plurality of dependent probes adapted to be immersed in a liquid to be agitated in subject to vibratory energy produced by selectively rotating eccentric weights in a vibratory case fixed on top of said base plate.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: February 24, 1981
    Assignee: L. B. Foster Company
    Inventor: Alvin E. Herz
  • Apparatus for cleaning metallurgical vessels such as slag pots and ladles
    Patent number: 4151982
    Abstract: Method and apparatus are provided for cleaning metallurgical vessels such as slag pots, ladles and the like by inducing vibration into such vessel from a housing clamped to said vessel and containing a vibratory means such as rotating eccentric weights.
    Type: Grant
    Filed: June 20, 1977
    Date of Patent: May 1, 1979
    Assignee: L. B. Foster Company
    Inventor: Alvin E. Herz
  • Resilient yoke mountings for vibratory pile drivers and extractors
    Patent number: 4061196
    Abstract: A vibratory pile driver and extractor is provided in combination with a yoke means above and movable relative to said driver and extractor and resilient rubber support means between opposed abutments on said driver and extractor and said yoke means whereby said driver and extractor is resiliently connected to said yoke means through said abutments, said abutments acting to prevent separation of the yoke means and driver and extractor in case of failure of the resilient rubber means.
    Type: Grant
    Filed: August 30, 1976
    Date of Patent: December 6, 1977
    Assignee: L. B. Foster Company
    Inventor: Alvin E. Herz
  • Tree and stump extraction
    Patent number: 3958613
    Abstract: A method and apparatus are provided for recovering stump and root systems in timber harvesting by exerting a vertical lifting force combined with simultaneously vibrating the trunk of a tree or stump being harvested.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: May 25, 1976
    Assignee: L. B. Foster Company
    Inventor: Alvin E. Herz