Applicator knife

• US 3,188,989 A
• Filed: 04/08/1963
• Issued: 06/15/1965
• Est. Priority Date: 04/08/1963
• Status: Expired due to Term

• Current Assignee: Douglas Johnston
• Original Assignee: Douglas Johnston
• Inventors: Johnston, Douglas
• Application Number:
  US04/271,242
• Time in Patent Office: 799 Days
• US Class Current: 111/123
• CPC Class Codes: A01C 23/025 Continuous injection tools

Claims

1. IN COMBINATION, AN APPLICATOR BLADE STRUCTURE FOR SUBSURFACE APPLICATION INTO THE SOIL OF LIQUIDS, THE ELEMENTS OF THE STRUCTURE COMPRISING A LEADING BLADE AND A TRAILING MATERIALS DISPENSING TUBE, AND AT LEAST TWO VERTICALLY SPACED MOUNTING MEANS FOR MOUNTING THE ELEMENTS TOGETHER WITH SAID TUBE ON AND AT THE REAR OF SAID LEADING BLADE FOR SUBSURFACE DISPENSING, EACH MOUNTING MEANS COMPRISING A TAB ON ONE OF THE ELEMENTS, A HOLE THROUGH THE TAB, A SLOT IN THE OTHER ELEMENT, THE SLOTS BEING LARGER THAN THE TABS TO LOOSELY RECEIVE THE TABS, AND EACH MOUNTING MEANS FURTHER INCLUDING A PIN FIXED TO SAID OTHER ELEMENT AND EXTENDING THROUGH THE HOLE IN THE TAB, THE HOLES IN THE TABS BEING LARGER THAN THE DIAMETERS OF THE PINS, THE AFORESAID MOUNTING MEANS PROVIDING SUBSTANTIAL PLAY IN THE FIT OF THE HOLES AROUND THE PINS AND THE FIT OF THE TABS WITHIN THE SLOTS TO ENABLE THE TUBE TO PIVOT FREELY RELATIVE TO THE BLADE.