The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 24, 1981
Filed:
Jun. 02, 1980
Anthony Farque, Fayetteville, AR (US);
Doyle Nutt, Fayetteville, AR (US);
Other;
Abstract
There is disclosed electronic apparatus for devitalizing a band of cells girdling a tree trunk to cause the death of an unwanted tree or other plant, including a source of radio-frequency energy, and first and second r.f. electrical couplers to the stem or trunk of the plant or tree; preferably such couplers are flexible chains or the like and are caused to encircle the tree by a first actuator which closes jaws of a portable portion of the apparatus around the tree and a second actuator which draws the flexible couplers snug against the trunk of the tree. Death of the plant is believed caused primarily by devitalization of a band of cells girdling the stem of the plant and in particular the cambium cell layers are devitalized by being elevated in temperature by dielectric heating or induction heating effects.