Patents by Inventor John P. DeMaria

John P. DeMaria 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: 11643308
    Abstract: The present invention relates to a tool for removing drive shafts from transmissions. In at least one embodiment, the present invention may remove a propeller shaft from an outboard engine. The present invention includes a upper housing, a lower housing and an inner guide conduit system, a portion of each define a jack support chamber and a viewing chamber, wherein the jack support chamber is adapted to house a hollow body jack and the viewing chamber is adapted to provide a view of the shaft while being removed from the shaft housing. One embodiment further includes an extension rod that may be secured at a first end to the drive shaft and secured at a second end to a piston of a hollow body jack so that when actuated the jack will remove the shaft from the shaft housing without damaging the engine or the gear housing.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: May 9, 2023
    Inventor: John P. DeMaria
  • Publication number: 20210292140
    Abstract: The present invention relates to a tool for removing drive shafts from transmissions. In at least one embodiment, the present invention may remove a propeller shaft from an outboard engine. The present invention includes a upper housing, a lower housing and an inner guide conduit system, a portion of each define a jack support chamber and a viewing chamber, wherein the jack support chamber is adapted to house a hollow body jack and the viewing chamber is adapted to provide a view of the shaft while being removed from the shaft housing. One embodiment further includes an extension rod that may be secured at a first end to the drive shaft and secured at a second end to a piston of a hollow body jack so that when actuated the jack will remove the shaft from the shaft housing without damaging the engine or the gear housing.
    Type: Application
    Filed: March 19, 2021
    Publication date: September 23, 2021
    Inventor: John P. DeMaria