Patents by Inventor John J. Casperovich

John J. Casperovich 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).

  • Pavement breaker
    Patent number: 4440237
    Abstract: A pavement breaker having a valveless piston reciprocating cycle is disclosed. Means is provided for cushioning the shock effect transmitted by the reciprocating piston to the outer housing.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: April 3, 1984
    Assignee: Ingersoll-Rand Co.
    Inventor: John J. Casperovich