US3801015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foam generator
Assignee: Individual
•
Filing: 1972-10-27
•
Granted: 1974-04-02
•
Expires: 1992-10-27
Abstract
Abstract A foam generating apparatus includes a tank containing liquid chemicals for producing a foam. Gas under pressure is applied to the tank to drive the liquid into a foam generator. In the foam generator the pressurized gas is injected into the liquid to form a foam via a generator core having openings formed at staggered intervals and at right angles, one from another.
Inventors
- 👤 E Hayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:46
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/34; A62; A62C; A62C5/00; A62C5/002; B; B05; B05B; B05B7/00; B05B7/24; B05B7/26; B05B9/00; B05B9/007; Y; Y10; Y10S; Y10S261/00; Y10S261/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
A device for generating foam from a foam-producing liquid by pressurized gas comprising: a tank, a first inlet to said tank for introducing foam-producing liquid into said tank, a second inlet to said tank for introducing pressurized gas into said tank; means for transporting said tank from one place to another, a pipe inserted into said tank and extending outside said tank, a foam generator including: a cylinder having a liquid inlet fastened to the end of the pipe extending outside said tank, said pipe transporting the liquid from said tank to said cylinder, a tube fastened to a gas inlet of said cylinder with a free end of the tube closed, said tube having openings formed therein along the length of the tube, said openings being of a size to permit the gas to engage the liquid in the cylinder while under pressure, and an outlet for exiting the produced foam, means for introducing pressurized gas from the tank into the gas inlet to said foam generator, a hose connected to the outlet of said foam generator, and a trigger nozzle fastened to the free end of the hose.
Claim 2
Independent Claim
190 words
A device for generating foam from a foam-producing liquid by pressurized gas comprising: a tank, a first inlet to said tank for introducing foam-producing liquid into said tank, a second inlet to said tank for introducing pressurized gas into said tank; means for transporting said tank from one place to another, a pipe inserted into said tank and extending outside said tank, a foam generator including: a cylinder having a liquid inlet fastened to the end of the pipe extending outside said tank, said pipe transporting the liquid from said tank to said cylinder, a tube fastened to a gas inlet of said cylinder with a free end of the tube closed, said tube having openings formed therein along the length of the tube, said openings being of a size to permit the gas to engage the liquid in the cylinder while under pressure, and an outlet for exiting the produced foam, means for introducing pressurized gas from the tank into the gas inlet to said foam generator, a hose connected to the outlet of said foam generator, and a trigger nozzle fastened to the free end of the hose.
Claim 3
Dependent Claim
49 words
The device of claim 1 wherein the openings in the tube of said foam generator are formed at staggered intervals with each successive opening spaced along the circumference of the tube 90* away from the preceding opening, with openings in the same 180* plane located directly opposite each other.
Claim 4
Dependent Claim
12 words
The device of claim 2 wherein said tube is a hollow cylinder.
Claim 5
Dependent Claim
25 words
The device of claim 2 wherein said tube is a square shaped hollow tube with the openings formed on the flat surface of the tube.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |