# US 11,896,941 B2 · Insert assembly for foaming device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,896,941 B2 - Document ID: US11896941B2 - Status: Granted - Kind: B2 - Application number: 18/123,574 - Filed: 2023-03-20 - Published: 2023-07-20 - Granted: 2024-02-13 - Earliest claimed: 2020-04-10 - Assignees: Sonny's HFI Holdings, LLC - Applicants: Sonny's HFI Holdings, LLC - Inventors: Daniel Folk; Ryan Olson - Web page: https://patentgrep.com/patent/US11896941B2 ## CPC - B01F 25/4522: {the components being pressed through porous bodies, e.g. flat plates, blocks or cylinders, which obstruct the whole diameter of the tube (B01F25/45243 takes precedence)} - B01F 23/235: for making foam - B01F 33/811: {in two or more consecutive, i.e. successive, mixing receptacles or being consecutively arranged} - B08B 3/003: {Cleaning involving contact with foam} - B01F 2101/24: Mixing of ingredients for cleaning compositions - B05B 1/044: {Slits, e.g. narrow openings defined by two straight and parallel lips; Elongated outlets for producing very wide discharges, e.g. fluid curtains (B05B1/046 takes precedence)} - B05B 7/0018: {with devices for making foam} - B08B 3/04: Cleaning involving contact with liquid - B60S 3/04: for exteriors of land vehicles {(B60S3/002, B60S3/004 take precedence; specially adapted for railway vehicles B60S3/006)} - B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06) - B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) - B60S: SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR ## Abstract An insert assembly for a foam generating device includes a first insert and a second insert with a channel defined therethrough. Inserts may be formed by two shell halves that are coupleable to one another to define the channel. A plurality of ribs extends along an interior surface of the channel. Pad structures defined by porous media are provided in the channel and gripped by the plurality of ribs. The pads receive cleaning solution passing through the channel and cause foam to be generated by breaking-up the cleaning solution and agitating. The ribs may be arranged horizontally relative to a longitudinal axis of the insert assembly and retain the pads within the device. Inserts may be arranged in series along a longitudinal axis of the foam generating device with the pad structures arranged within the channel. ## Claims ### Claim 1 An insert assembly, comprising: a plurality of inserts releasably coupled in a serial arrangement to one another to form an insert assembly, wherein each insert of the plurality of the inserts comprises a shell defining a channel therethrough, and wherein the shells each comprise a plurality of gripping structures extending along an interior surface thereof to grip and hold porous pad structures within the channel, the gripping structures being arranged transversely to a longitudinal axis of the serially arranged inserts. ### Claim 2 (depends on 1) The insert assembly claim 1, wherein the gripping structures comprise one or more ribs, spikes, combs, or knurling. ### Claim 3 (depends on 1) The insert assembly of claim 1, wherein a first plurality of porous pad structures define a first stage of fluid agitation in the channel, a second plurality of pad structures define a second stage of fluid agitation in the channel, and wherein the first plurality of porous pad structures has a first thickness and the second plurality of pad structures has a second thickness. ### Claim 4 (depends on 1) The insert assembly of claim 1, wherein the plurality of inserts define coupling features operatively coupleable with one another. ### Claim 5 (depends on 4) The insert assembly of claim 4, wherein one of the coupling features defines a grooved feature and another of the coupling features defines a clip receivable by the grooved feature. ### Claim 6 (depends on 4) The insert assembly of claim 4, wherein one of the plurality of inserts are rotatably coupleable to one another by the coupling features. ### Claim 7 (depends on 1) The insert assembly of claim 1, wherein the inserts define intermediate spaces between the pad structures, the inserts configured such that the pad structures are prevented from entry into the intermediate spaces. ### Claim 8 (depends on 1) The insert assembly of claim 1, wherein the shells comprises a first shell portion and a second shell portion coupleable to each other to define a portion of the channel. ### Claim 9 (depends on 1) The insert assembly of claim 1, wherein the shells are releasably coupleable to each other by complementary releasable closures such that the pad structures can be removably arranged in the shells. ### Claim 10 A foam generating device, comprising, an insert assembly, comprising: a plurality of inserts releasably coupled in a serial arrangement to one another to form an insert assembly, wherein each insert of the plurality of the inserts comprises a shell defining a channel therethrough, and wherein the shells each comprise a plurality of gripping structures extending along an interior surface thereof to grip and hold porous pad structures within the channel, the gripping structures being arranged transversely to a longitudinal axis of the serially arranged inserts; and a housing adapted to hold the insert assembly therein, wherein the plurality of pad structures of the insert are fluidly coupled with an inlet of the housing and an outlet of the housing. ### Claim 11 (depends on 10) The foam generating device of claim 10, wherein the housing further comprises an entry port for receiving the insert assembly. ### Claim 12 (depends on 11) The foam generating device of claim 11, wherein the entry port is sealable by a cap. ### Claim 13 (depends on 12) The foam generating device of claim 12, wherein the cap is configured for releasable attachment with the insert assembly such that the insert assembly is movable via the cap. ### Claim 14 (depends on 10) The foam generating device of claim 10, wherein the gripping structures comprise one or more ribs, spikes, combs, or knurling. ### Claim 15 (depends on 10) The foam generating device of claim 10, wherein the inlet is arranged at a first end of the housing and the outlet is arranged at a second end of the housing opposite from the first end. ### Claim 16 (depends on 10) The foam generating device of claim 10, wherein the first end of the housing is configured to be fluidly coupled to a fluid source. ### Claim 17 (depends on 16) The foam generating device of claim 16, wherein the second end of the housing is configured to be fluidly coupled to a conduit for emitting a foam product from the outlet of the housing. ### Claim 18 A method of using a foam generating device, comprising: inserting an insert assembly into a housing adapted to hold the insert assembly therein, the insert assembly comprising: plurality of inserts releasably coupled in a serial arrangement to one another to form an insert assembly, wherein each insert of the plurality of the inserts comprises a shell defining a channel therethrough, and wherein the shells each comprise a plurality of gripping structures extending along an interior surface thereof to grip and hold porous pad structures within the channel, the gripping structures being arranged transversely to a longitudinal axis of the serially arranged inserts; causing a fluid to flow through an inlet of the housing, wherein the fluid passes through the pad structures within the housing to form a foam, and wherein the foam is emitted from an outlet of the housing. ### Claim 19 (depends on 18) The method of claim 18, further comprising causing the foam to traverse intermediate spaces defined in the channel.