Patents by Inventor John James Rogan

John James Rogan 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).

  • Power-operated work clamping devices
    Patent number: 3948502
    Abstract: A clamp with angular and axial movements which are effected in sequence preferably by means of a single power actuator. The clamping member is mounted within a non-rotatable piston to which it is connected by a pin or ball and inclined cam slot connection whereby axial movement of the piston produces rotary movement of the connecting member which is restrained against axial movement until the rotary movement is completed. Further axial movement of the piston then produces axial movement of the clamping member.
    Type: Grant
    Filed: November 12, 1974
    Date of Patent: April 6, 1976
    Assignee: Spenklin Limited
    Inventors: Laurence Alfred Waller, John James Rogan