Patents by Inventor David W. Hatfield

David W. Hatfield 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).

  • Animal stanchion with selectively releasable feature
    Patent number: 7784431
    Abstract: An animal stanchion having fixed stanchion structure and a pivotal release stanchion laterally spaced apart to define a head opening. The animal stanchion further comprises an upper top control rail which is configured to interact with a latch to selectively hold and release various portions of the pivot rod from connection with the latch. This device further comprises a plurality of individual locking brackets which are configured to interact with handle catch devices so as to hold various devices within their designated location within the device.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: August 31, 2010
    Inventors: John B. Hatfield, David W. Hatfield, J. Deven Hatfield, Jason M. Hatfield