Patents by Inventor Daniel C. Drinkwater

Daniel C. Drinkwater 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).

  • Adjustment for rock crusher
    Patent number: 6032886
    Abstract: An adjustment mechanism for a rock crusher has an insert installed in the thread form of a bowl support and a locking ring. A bowl is threadably installed in the bowl support and lock ring assembly and is movable toward and away from a cone assembly. The insert is of a material that differs from that of the bowl and bowl support. The lock ring is movable to frictionally lock the thread forms of the bowl and bowl support against each other. The inserts prevent the galling and deformation of the thread forms previously experienced.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: March 7, 2000
    Assignee: Johnson Crushers International
    Inventors: Daniel C. Drinkwater, Roger M. Clark, Gerald E. Parker, David F. Peaks, Gary Heeszel, Randy Orre
  • Cone crusher for rock
    Patent number: 5950939
    Abstract: A cone crusher for rock that has a rotatable wedge plate that rotatably supports a cone for crushing rock. The wedge plate has bores for receiving sized weights for balancing the rotating assembly. The bores place the weights out of the travel path of the crushed material and are not subject to wear or abrasion during operation of the crusher.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: September 14, 1999
    Assignee: Johnson Crushers International
    Inventors: Daniel C. Drinkwater, Roger M. Clark, Gerald E. Parker, David F. Peaks