The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 17, 1998
Filed:
Dec. 03, 1996
Carroll G Rowe, Washington, AR (US);
Other;
Abstract
Apparatus for generating foam for use in fire fighting having two plates housed in a chamber which respectively introduce pressurized air and water/soap solution into the space between the two plates where foam is generated and emitted from an aperture on the side of the chamber. Pressurized water/soap solution is introduced through an orifice into a small opening through one plate. Pressurized air is introduced into the other plate through a number of channels bored through the plate to an annular grove on the surface of the plate. The plates are provided with flat surfaces which are brought together to form a narrow gap. The narrow gap balances the pressure between the incoming water and the incoming air by achieving an equilibrium at some particular radius out from the center of the two plates. This equilibrium radius moves in and out from the center as necessary to keep the two pressures balanced. The incoming air pressure is set at a desired level, and the incoming water pressure is adjusted to a slightly higher initial pressure. The quality of the foam is then determined by further upward or downward adjustments of the water pressure.