Patent US4005976A successfully refreshed from Google Patents.
US4005976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rodent exterminator
Assignee: Individual
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Filing: 1975-08-14
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Granted: 1977-02-01
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Expires: 1995-08-14
Abstract
Abstract A gas fired apparatus discharging a mixed gas-air flow through a barrel into a confined area such as a rodent burrow. An igniter in said barrel ignites the gas-air mixture. A control assembly includes closely coupled gas and ignition controls enabling one hand operation. An extensible, ground engaging support positions the apparatus in an inclined manner for barrel penetration of a burrow opening. A valve in said barrel regulates gas-air mixing.
Inventors
- 👤 James L. Rombach
- 👤 David W. Strebel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:50
CPC Classifications
A; A01; A01M; A01M15/00; A01M19/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A portable apparatus for discharging and igniting a quantity of flammable gas within a closed area, said apparatus comprising, a frame including a support for ground engagement, a barrel including nozzle means for discharge of the flammable gas, said barrel including adjustable means regulating the intake of ambient air into the barrel for mixing with the gas, an igniter mounted within said barrel, a gas control valve mounted on said frame, a switch means mounted on said framework closing an electrical circuit to an ignition system serving said igniter means for ignition of the discharged gas.
Claim 2
Dependent Claim
96 words
A portable apparatus for discharging and igniting a quantity of flammable gas within a closed area, said apparatus comprising, a frame including a support for ground engagement, a barrel including nozzle means for discharge of the flammable gas, said barrel including adjustable means regulating the intake of ambient air into the barrel for mixing with the gas, an igniter mounted within said barrel, a gas control valve mounted on said frame, a switch means mounted on said framework closing an electrical circuit to an ignition system serving said igniter means for ignition of the discharged gas.
Claim 3
Dependent Claim
43 words
The apparatus claimed in claim 1 wherein said frame support is extensible downwardly past one end segment of said barrel for supporting the apparatus in inclined relationship to the ground enabling insertion of the opposite end of said barrel into a rodent burrow.
Claim 4
Dependent Claim
23 words
The apparatus claimed in claim 2 wherein said frame support has a laterally projecting foot member whereby the apparatus may be free standing.
Claim 5
Dependent Claim
27 words
The apparatus claimed in claim 1 wherein said barrel adjustable means includes a manually actuated control rod and a cylindrically shaped valve positioned by said control rod.
Claim 6
Dependent Claim
28 words
The apparatus claimed in claim 1 wherein said gas control valve and said switch means are juxtaposed to enable joint operation thereof by one hand of the operator.
Claim 7
Dependent Claim
22 words
The apparatus claimed in claim 1 additionally including a pressure gauge on said frame indicating gas pressure in a nozzle supply conduit.
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) | 1980-02-01 | 1980-08-02 | 1981-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-01 | 1984-08-02 | 1985-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-01 | 1988-08-02 | 1989-02-01 | $7700.00 | Window Closed / Lapsed |