Patent US3575348A successfully refreshed from Google Patents.
US3575348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for washing and rinsing
Assignee: Cleveland Range LLC
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Filing: 1968-09-09
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Granted: 1971-04-20
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Expires: 1988-09-09
Abstract
Abstract A portable cart is provided with a pump which receives water through a hose connection, and pumps this water through a pressure relief circuit to a venturi injector. The injector receives a liquid detergent or the like, and mixes this detergent with the water. The mixture is supplied to a spray nozzle which is hand operated. The ratio of detergent and water can be varied as a function of the rate that liquid is dispensed from the nozzle.
Inventors
- 👤 Robert H Mackay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:34
CPC Classifications
B; B08; B08B; B08B3/00; B08B3/02; B08B3/026; A; A47; A47L; A47L1/00; A47L1/02; B08B2203/00; B08B2203/02; B08B2203/0205; B08B2203/0217; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87571; Y10T137/87587; Y10T137/87643
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
408 words
An improved device for washing and rinsing, comprising: a. a portable mobile cart having means for rolling said cart thereon; b. a liquid pump mounted on said cart, said pump having an inlet for receiving liquid, an outlet for discharging said received liquid under a higher pressure, and mechanical means for operating said pump; c. an electric motor mounted on said cart, said motor having an output shaft connected to said mechanical means of said liquid pump, and having means for connecting said electric motor to a source of electric power; d. a flow distribution device having first, second, and third liquid connections; e. meanS for connecting said first connection of said flow distribution device to a source of water; f. means connecting said second connection of said flow distribution device to said inlet of said liquid pump; g. an unloader valve having a liquid inlet, a first liquid outlet, and a second liquid outlet, said unloader valve being arranged so that its liquid inlet is normally connected to its first liquid outlet, and so that its liquid inlet is disconnected from its first liquid outlet and connected to its second liquid outlet in response to a selected pressure differential between said liquid inlet and said second liquid outlet; h. means connecting said liquid inlet of said unloader valve to said outlet of said liquid pump; i. means connecting said first liquid outlet of said unloader valve to said third liquid connection of said flow distribution device; j. a venturi injector device mounted on said cart and having a main liquid inlet connected to a main liquid outlet, and a liquid injection inlet connected to said connected main liquid inlet and main liquid outlet; k. means connecting said main liquid inlet of said venturi injector device to said second outlet of said unloader valve; l. a container mounted on said cart for storing liquid detergents and the like; m. means connecting said container to said liquid injection inlet of said venturi injector device; and n. manually operable spray means connected to said main liquid outlet of said venturi injector device comprising a nozzle, a handle and a manually operable flow control valve whereby adjustment of said valve produces a variable ratio of detergent to water, said ratio varying directly as a function of the rate of liquid dispensed from said spray means, said ratio being approximately zero for small dispensing rates and increasing as the dispensing rate increases.
Claim 2
Dependent Claim
408 words
An improved device for washing and rinsing, comprising: a. a portable mobile cart having means for rolling said cart thereon; b. a liquid pump mounted on said cart, said pump having an inlet for receiving liquid, an outlet for discharging said received liquid under a higher pressure, and mechanical means for operating said pump; c. an electric motor mounted on said cart, said motor having an output shaft connected to said mechanical means of said liquid pump, and having means for connecting said electric motor to a source of electric power; d. a flow distribution device having first, second, and third liquid connections; e. meanS for connecting said first connection of said flow distribution device to a source of water; f. means connecting said second connection of said flow distribution device to said inlet of said liquid pump; g. an unloader valve having a liquid inlet, a first liquid outlet, and a second liquid outlet, said unloader valve being arranged so that its liquid inlet is normally connected to its first liquid outlet, and so that its liquid inlet is disconnected from its first liquid outlet and connected to its second liquid outlet in response to a selected pressure differential between said liquid inlet and said second liquid outlet; h. means connecting said liquid inlet of said unloader valve to said outlet of said liquid pump; i. means connecting said first liquid outlet of said unloader valve to said third liquid connection of said flow distribution device; j. a venturi injector device mounted on said cart and having a main liquid inlet connected to a main liquid outlet, and a liquid injection inlet connected to said connected main liquid inlet and main liquid outlet; k. means connecting said main liquid inlet of said venturi injector device to said second outlet of said unloader valve; l. a container mounted on said cart for storing liquid detergents and the like; m. means connecting said container to said liquid injection inlet of said venturi injector device; and n. manually operable spray means connected to said main liquid outlet of said venturi injector device comprising a nozzle, a handle and a manually operable flow control valve whereby adjustment of said valve produces a variable ratio of detergent to water, said ratio varying directly as a function of the rate of liquid dispensed from said spray means, said ratio being approximately zero for small dispensing rates and increasing as the dispensing rate increases.
Claim 3
Dependent Claim
18 words
The improved device of claim 1 wherein said unloader valve comprises means for selectively adjusting said pressure differential.
References Cited (Backward Citations)
US3019799A
Cited
US3372875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |