Patents by Inventor Martin Sjolund

Martin Sjolund 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).

  • Gate for cattle handling systems
    Patent number: 6550425
    Abstract: A gate for use in cattle handling systems, where animals pass between different areas separated by fences and passage from one area to another takes place through the gate. The gate is spring biased to occupy a closed position, in which it is lockable by at least one catch member being releasable in response to the approach of an animal identified as allowable for passage. The catch member is arranged to provide free passage at all times through the gate in one opening direction and to be actuatable for releasing the gate for opening in the opposite opening direction.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: April 22, 2003
    Assignee: Delaval Holding AB
    Inventor: Martin Sjölund