Patents by Inventor Hans Merving

Hans Merving 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).

  • Tree treatment capsule with volumes for sequentially discharging fluid
    Patent number: 5341594
    Abstract: A tree treatment capsule is inserted into a bore formed in a tree and has several volumes from which various fluids used to treat the tree are sequentially discharged. The capsule includes a plastic container having a shank portion, with a first internal cavity having an end opening and containing a first chemical agent, and a head element integrally formed with the shank portion at a location remote from the end opening. The shank portion includes a circumferential recess formed therein, and a plastic plug is provided for sealingly closing the internal cavity. The plastic plug has an outer external diameter which is slightly smaller than the diameter of the end opening, and has another internal cavity formed therein containing a second chemical agent. The plug is partially insertable into the end opening so that a tight fit between the plug and the end opening is provided.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: August 30, 1994
    Inventor: Hans Merving
  • Tree treatment capsule
    Patent number: 5010684
    Abstract: A tree treatment capsule is disclosed as including a head element having a shank portion with an internal cavity containing a chemical agent. The internal cavity is sealed by a plug in an end of the shank portion remote from the head element. The head element, shank portion, chemical agent and plug form a self-contained unit which is inserted into a pre-drilled hole in a tree. The shank portion is made of a frangible material so that upon breaking as a result of an impact force applied to the head element, the chemical agent is free to mix with the sap of the tree.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: April 30, 1991
    Assignee: Hans Merving
    Inventor: Hans Merving
  • Tree treatment capsule
    Patent number: 4905410
    Abstract: A tree treatment capsule is disclosed as including a head element having a shank portion with an internal cavity containing a chemical agent, the internal cavity being sealed by a plug in an end of the shank portion remote from the head element; the head element, shank portion, chemical agent and plug forming a self-contained unit which is inserted into a pre-drilled hole in a tree. The shank portion is made of a frangible material so that upon breaking as a result of an impact force applied to the head element, the chemical agent is free to mix with the sap of the tree.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: March 6, 1990
    Inventor: Hans Merving