US4687904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically heated insecticide dispenser
Assignee: Control Devices LLC
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Filing: 1986-08-04
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Granted: 1987-08-18
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Expires: 2006-08-04
Abstract
Abstract An insecticide dispenser capable of setting off a charge of insecticide to fumigate a room and then automatically shutting itself off before the completion of the dispensing of the charge of the insecticide, whereby the dispenser can be safely left unattended during the fumigation of a room. The dispenser includes a container for the insecticide and a fusible member that will break during the volatilization of the insecticide thereby to break the electrical circuit and turn off the power supply.
Inventors
- 👤 Lionel J. Melanson
- 👤 Nabil Kamal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:10
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0205; A; A01; A01M; A01M1/00; A01M1/20; A01M1/2022; A01M1/2061; A01M1/2077; A61; A61L; A61L9/00; A61L9/015; A61L9/02; A61L9/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
193 words
An insecticide dispenser for a room, said dispenser comprising: a housing and an electrically conductive, nonreuseable container disposed in said housing, said container being disposed upon a resistance heating means and adapted to receive a charge of an insecticide dispersed within a solid carrier, said charge requiring the application of heat to initiate a chemical reaction which produces the volatilization of the insecticide; and first means connecting said container to one side of a power supply; and second means connecting said container to the other side of said power supply, said second means including an electrically conductive fusible means, electrically connected at one end to said container and removably connected at its other end to an electrical contact disposed on said housing, said fusible means being electrically insulated from said container at all points except where it is connected to said container, whereby said fusible means can complete the circuit to the resistance heating means and initiate the chemical reaction in the charge of insecticide; and said fusible means being adapted to break at a predetermined point after said chemical reaction has been initiated whereby to discontinue the electrical heating to said charge.
Claim 2
Dependent Claim
193 words
An insecticide dispenser for a room, said dispenser comprising: a housing and an electrically conductive, nonreuseable container disposed in said housing, said container being disposed upon a resistance heating means and adapted to receive a charge of an insecticide dispersed within a solid carrier, said charge requiring the application of heat to initiate a chemical reaction which produces the volatilization of the insecticide; and first means connecting said container to one side of a power supply; and second means connecting said container to the other side of said power supply, said second means including an electrically conductive fusible means, electrically connected at one end to said container and removably connected at its other end to an electrical contact disposed on said housing, said fusible means being electrically insulated from said container at all points except where it is connected to said container, whereby said fusible means can complete the circuit to the resistance heating means and initiate the chemical reaction in the charge of insecticide; and said fusible means being adapted to break at a predetermined point after said chemical reaction has been initiated whereby to discontinue the electrical heating to said charge.
Claim 3
Dependent Claim
54 words
The dispenser according to claim 1 wherein said resistance heating means is a PTC heater, one side of which is connected to said one side of said power supply and the other side of which is connected to said other side of power supply through said fusible means that is connected to said container.
Claim 4
Dependent Claim
16 words
The dispenser according to claim 2 wherein the fusible means is a section of solder wire.
Claim 5
Dependent Claim
22 words
The dispenser according to claim 2 wherein the container has a flat bottom, arranged to be disposed upon a flat PTC heater.
Claim 6
Dependent Claim
35 words
The dispenser according to claim 2 wherein an insulator is disposed on the side wall of said container and said fusible means extends through said insulator to the ouside thereof to an electrical contact surface.
Claim 7
Dependent Claim
24 words
The dispenser according to claim 5 wherein a contact is disposed on said housing and arranged to engage said contact surface on said container.
References Cited (Backward Citations)
US1102424A
Cited
US1908054A
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US2612432A
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US2660828A
Cited
FR1479904A
Cited
US3366775A
Cited
US4163038A
Cited
US4571485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |