US3188989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Applicator knife
Assignee: Decatur Foundry and Machine Co Inc
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Filing: 1963-04-08
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Granted: 1965-06-15
•
Expires: 1983-04-08
Abstract
No abstract record available.
Inventors
- 👤 Johnston Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:02
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
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.
Claim 2
Dependent Claim
161 words
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.
References Cited (Backward Citations)
DE335464C
Cited
US2646012A
Cited
US2768591A
Cited
US2988026A
Cited
US2853030A
Cited
US2903982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |