# US 5,341,541 A · Portable steam vacuum cleaner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,341,541 A - Document ID: US5341541A - Status: Granted - Kind: A - Application number: 07/942,308 - Filed: 1992-09-09 - Granted: 1994-08-30 - Earliest claimed: 1992-09-09 - Inventors: John C. K. Sham - Web page: https://patentgrep.com/patent/US5341541A ## CPC - A47L 7/0042: {Gaskets; Sealing means} - A47L 1/08: with provision for supplying liquids, e.g. cleaning agents (A47L1/095, A47L1/13, A47L1/15 take precedence) - A47L 5/225: {Convertible suction cleaners, i.e. convertible between different types thereof, e.g. from upright suction cleaners to sledge-type suction cleaners} - A47L 5/24: Hand-supported suction cleaners - A47L 5/28: Suction cleaners with handles and nozzles fixed on the casings, e.g. wheeled suction cleaners with steering handle (A47L5/24 takes precedence) - A47L 7/0009: {with means mounted on the nozzle; nozzles specially adapted for the recovery of liquid} - A47L 9/06: with fixed, e.g. adjustably fixed brushes or the like - A47L 9/0613: {with means specially adapted for picking up threads, hair or the like, e.g. brushes, combs, lint pickers or bristles pads} - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) ## Abstract A portable hand-held steam vacuum cleaner is provided which includes a housing having a handle portion and a nozzle portion. A reservoir is defined in the housing for retaining cleaning solution or water, and a heating unit is associated with the reservoir for heating the liquid so as to generate steam for delivery to a surface to be cleaned. A motor driven fan assembly is disposed within the housing in communication with the nozzle portion for drawing excess liquid and debris into the nozzle portion. The nozzle portion defines structure for separating and containing the liquid which is drawn into the vacuum cleaner. ## Claims ### Claim 1 A hand-held vacuum cleaner comprising: a) a housing having a handle portion and a nozzle portion; b) a reservoir associated with said housing for retaining liquid; c) means for heating the liquid so as to generated steam for delivery to a surface to be cleaned; d) a motor driven fan assembly disposed in said housing and communicating with said nozzle portion for drawing liquid and debris into said nozzle portion; e) means for containing the debris and liquid drawn into said nozzle portion; and f) means for deflecting liquid drawn into said nozzle port away from said fan assembly for collection in said containing means. ### Claim 2 (depends on 1) A hand-held vacuum cleaner as recited in claim 1, further comprising means for pumping liquid from said reservoir to said heating means. ### Claim 3 (depends on 1) A hand-held vacuum cleaner as recited in claim 1, further comprising conduit means for communicating said reservoir with said heating means. ### Claim 4 (depends on 3) A hand-held vacuum cleaner as recited in claim 3, further comprising valve means for selectively allowing or preventing transferal of liquid from said reservoir through said conduit means to said heating means. ### Claim 5 (depends on 1) A hand-held vacuum cleaner as recited in claim 1, wherein said heating means is disposed in a pivoting head member mounted for movement relative to said housing. ### Claim 6 (depends on 1) A hand-held vacuum cleaner as recited in claim 1, wherein said heating means includes means for controlling operation of said heating means. ### Claim 7 (depends on 1) A hand-held vacuum cleaner as recited in claim 1, wherein said heating means comprises an enclosure defining an entry port for receiving liquid, a plurality of cascading steam generating chambers in communication with said entry port for sequentially heating the liquid, and a plurality of exit ports in communication with one of said steam generating chambers for ejecting steam from said heating means. ### Claim 8 (depends on 7) A hand-held vacuum cleaner as recited in claim 7, wherein a brush is detachably mounted to said housing adjacent said exit ports of said heating means. ### Claim 9 (depends on 1) A hand-held vacuum cleaner as recited in claim 1, wherein a brush is detachably mounted to said housing adjacent said nozzle portion. ### Claim 10 (depends on 1) A hand-held vacuum cleaner as recited in claim 1, wherein said containing means is configured for preventing the liquid and debris drawn into said nozzle portion from interfering with said motor driven fan. ### Claim 11 A hand-held vacuum cleaner comprising: a) a housing having a handle portion and a nozzle portion; b) a reservoir defined in said housing for retaining liquid; c) means for heating the liquid so as to generate steam for delivery to a surface to be cleaned; d) means for pumping the liquid from said reservoir to said heating means; e) a motor driven fan assembly disposed in said housing and communicating with said nozzle portion for drawing liquid and debris into said nozzle portion; and f) means associated with said nozzle portion for containing the debris and liquid drawn into said nozzle portion. ### Claim 12 (depends on 11) A hand-held vacuum cleaner as recited in claim 11, wherein said heating means is positioned in a pivoting head member mounted for movement relative to said housing. ### Claim 13 (depends on 11) A hand-held vacuum cleaner as recited in claim 11, wherein a thermostat is associated with said heating means for controlling the operation thereof. ### Claim 14 (depends on 11) A hand-held vacuum cleaner as recited in claim 11, wherein said heating means comprises an enclosure defining an entry port for receiving liquid, a plurality of cascading steam generating chambers in communication with said entry port for sequentially heating the liquid, and a plurality of exit ports in communication with one of said steam generating chambers for ejecting steam from said heating means. ### Claim 15 (depends on 14) A hand-held vacuum cleaner as recited in claim 14, wherein a brush is detachably mounted to said housing adjacent said exit ports of said heating means. ### Claim 16 (depends on 11) A hand-held vacuum cleaner as recited in claim 11, wherein said containing means is configured for preventing liquid and debris from interfering with said motor drive fan assembly. ### Claim 17 A hand-held vacuum cleaner comprising: a) a housing having a handle portion and a nozzle portion; b) a reservoir defined in said housing for retaining liquid; c) means for heating the liquid so as to generate steam for delivery to a surface to be cleaned; d) conduit means for communicating said reservoir with said heating means; e) valve means for selectively allowing or preventing transferal of the liquid from said reservoir through said conduit means to said heating means; f) a motor driven fan assembly disposed in said housing and communicating with said nozzle portion for drawing liquid and debris into said nozzle portion; and g) means for containing the debris and liquid drawn into said nozzle portion. ### Claim 18 (depends on 17) A hand-held vacuum cleaner as recited in claim 17, wherein a thermostat is associated with said heating means for controlling the operation thereof. ### Claim 19 (depends on 17) A hand-held vacuum cleaner as recited in claim 17, wherein said heating means comprises an enclosure defining an entry port for receiving liquid, a plurality of cascading steam generating chambers in communication with said entry port for sequentially heating the liquid, and a plurality of exit ports in communication with one of said steam generating chambers for ejecting steam from said heating means. ### Claim 20 (depends on 19) A hand-held vacuum cleaner as recited in claim 19, wherein a brush is detachably mounted to said housing adjacent said exit ports of said heating means. ### Claim 21 (depends on 17) A hand-held vacuum cleaner as recited in claim 17, wherein said containing means is configured for preventing the liquid and debris from interfering with said motor driven fan assembly. ### Claim 22 A hand-held vacuum cleaner comprising: a) a housing having a handle portion and a nozzle portion; b) a reservoir defined in said housing for retaining liquid; c) a heating element defining an entry port in communication with said reservoir for receiving the liquid, a plurality of cascading steam generating chambers in communication with said entry port for sequentially heating the liquid, and a plurality of exit ports in communication with one of said steam generating chambers for ejecting steam from said heating means; d) a motor driven fan assembly disposed in said housing and communicating with said nozzle portion for drawing liquid and debris into said nozzle portion; and e) means associated with said nozzle portion for containing the debris and liquid drawn into said nozzle portion. ### Claim 23 (depends on 22) A hand-held vacuum cleaner as recited in claim 22, further comprising a thermostat associated with said heating element for controlling the operation thereof. ### Claim 24 (depends on 22) A hand-held vacuum cleaner as recited in claim 22, further comprising means for pumping liquid from said reservoir to said heating element. ### Claim 25 (depends on 22) A hand-held vacuum cleaner as recited in claim 22, further comprising conduit means for communicating said reservoir with said entry port of said heating element. ### Claim 26 (depends on 25) A hand-held vacuum cleaner as recited in claim 25, further comprising valve means for selectively allowing or preventing transferal of the liquid from said reservoir through said conduit means to said heating element. ### Claim 27 (depends on 22) A hand-held vacuum cleaner as recited in claim 22, wherein said heating element is disposed in a pivoting head mounted for movement relative to said housing. ### Claim 28 (depends on 22) A hand-held vacuum cleaner as recited in claim 22, wherein a brush is detachably mounted to said housing adjacent said exit ports of said heating element. ### Claim 29 (depends on 22) A hand-held vacuum cleaner as recited in claim 22, wherein said containing means is configured for preventing the liquid and debris from interfering with said motor driven fan assembly. ### Claim 30 In a hand-held vacuum cleaner including a housing having a handle portion and a nozzle portion, a motor driven fan assembly disposed in said housing and communicating with said nozzle portion, a cavity defined in said nozzle portion for containing liquid and debris drawn into said nozzle portion by said motor driven fan assembly, the improvement comprising: a) a reservoir positioned in said housing for retaining liquid; b) a heater for heating the liquid so as to generate steam for delivery to a surface to be cleaned; c) at least one steam port associated with said heater for applying steam to said surface to be cleaned; and d) means for deflecting liquid drawn into said nozzle portion away from said fan assembly into said cavity. ### Claim 31 A hand-held vacuum cleaner having a housing including fan means for drawing liquid and debris into said housing for collection therein, comprising: a) a reservoir positioned in said housing for retaining liquid; b) a heater in fluid communication with said reservoir for heating the liquid so as to generate steam for delivery through at least one steam port to a surface to be cleaned; and c) a baffle for substantially isolating said fan means from contact with liquid drawn into said housing.