Patents by Inventor John A. Siroky

John A. Siroky 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).

  • Portable drill with built-in chuck key
    Patent number: 4324512
    Abstract: A power tool such as a drill, for example, including a modified Jacobs chuck and incorporating a chuck key permanently mounted in the power tool housing and a main shaft locking device for locking the main shaft when the chuck key is used to manipulate, i.e., open or close, the chuck and spring biasing means for normally retaining the main shaft locking device and the chuck key out of the operating position so that the tool can operate freely.
    Type: Grant
    Filed: March 31, 1980
    Date of Patent: April 13, 1982
    Inventor: John A. Siroky