US3576276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for implanting insecticides into plants
Assignee: JOHN P CLARKE
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Filing: 1967-10-24
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Granted: 1971-04-27
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Expires: 1987-10-24
Abstract
Abstract Insecticide injection system for plants in which a hollow headed needle is driven into the plant, a disposable-type plastic syringe barrel is attached to the head of the hollow needle, a measured amount of insecticide is injected into the headed needle and the syringe barrel with a hypodermic syringe having a needle which extends completely through the barrel and into the headed needle, which is then withdrawn and a piston plunger inserted into the syringe barrel.
Inventors
- 👤 John P Clarke
- 👤 Newell K Rasmussen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
A; A01; A01G; A01G7/00; A01G7/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
13 words
Apparatus in accordance with claim 1, including the mating plunger for said barrel.
Claim 2
Dependent Claim
59 words
Apparatus in accordance with claim 2, including a tool for driving said hollow needle into the plant, said tool having an abutment for engaging said head and pin extending through the hollow needle and beyond its end for puncturing the plant and providing a void space beyond the end of the hollow needle after the tool is removed therefrom.
Claim 3
Dependent Claim
27 words
Apparatus in accordance with claim 3, including a chamfer at the outer end of said tapered bore for preventing upsetting of its outer edge by said abutment.
Claim 4
Dependent Claim
35 words
Apparatus in accordance with claim 3 wherein the tapered delivery tip of the syringe barrel is plastic and said tapered bore is provided with threads adapted to cut mating threads on said tapered delivery tip.
Claim 5
Dependent Claim
37 words
Apparatus in accordance with claim 3, including a baffle plate received by said delivery tip, for directing leakage chemical away from an operator, when the plunger is inserted, and in the event of leakage around said tip.
Claim 6
Dependent Claim
14 words
Apparatus in accordance with claim 6 wherein said baffle plate is constructed of rubber.
Claim 7
Independent Claim
116 words
A method of applying a liquid chemical, such as insecticide, to a plant, comprising the steps of; driving a hollow needle, having an enlarged head with a tapered bore, into the plant to a desired depth, inserting the tapered delivery tip of a syringe barrel into the tapered bore, inserting the needle of a hypodermic syringe through the barrel and into said hollow needle, ejecting a measured quantity of the chemical from the hypodermic syringe, filling first said hollow needle and thence partially filling said syringe barrel by outward flow from said hollow needle, thereby obviating entrapment of air, and inserting the mating plunger of the syringe barrel thereinto and forcing said chemical into the plant.
Claim 8
Dependent Claim
32 words
A method in accordance with claim 8 including the further step of: engaging the enlarged head of the hollow needle with a prying tool and prying said hollow needle from the plant.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |