Foam generating sprayer apparatus
Patent 4013228 Issued on March 22, 1977. Estimated Expiration Date: 
March 22, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 22, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1563123 1605177 2760821 2764452 3625436 3797749 InventorAssigneeApplicationNo. 05/669649 filed on 03/23/1976US Classes:239/401, Axially adjustable valve with fluid conducting stem239/311, Gas addition upstream of spray nozzle outlet239/428.5, Liquid flow induces atmospheric air (e.g., faucet aerator)239/434.5, One fluid discharges into other in concentric conical portion of outer conduit239/485And motion longitudinally of the axis of rotationExaminersPrimary: Ward, Robert S. Jr.Attorney, Agent or FirmAbstractA foam generating unit is adjustably mounted for longitudinal movement on a liquid sprayer having an orifice which provides a diverging liquid stream directed into the inlet of the foam generating unit. The foam generating unit includes a foam-generating section most advantageously having a pressure-reducing inlet passageway section including a preferably sharply outwardly tapering portion leading to a throat portion. Air inlet ports are provided communicating with the pressure-reducing passageway, through which ports air is drawn by the reduced pressure caused by the pressure-reducing passageway. The desired foaming action is achieved by adjusting the points of the pressure-reducing passageway section struck by the stream by moving the foam generating unit relative to the orifice.Field of SearchIncluding mixing or combining with air, gas or steamWith combining of diverse fluids at or upstream of distributor INCLUDING SUPPLY HOLDER FOR MATERIAL To be mixed, dissolved or entrained in a flowing liquid stream prior to discharge Gas addition upstream of spray nozzle outlet Follower-type holder and stream egress means in juxtaposition Aspirating discharge nozzle Moving solid surface engages material to be sprayed Three or more spray fluids (e.g., induction of ambient air) Including handle or handgrip for supply container and attached outlet One a fluent solid Including whirler device to induce fluid rotation Axially adjustable valve with fluid conducting stem Adjustable or selective whirl inducing means Whirling of fluid prior to or at point of addition of second fluid Induction of ambient air Liquid flow induces atmospheric air (e.g., faucet aerator) | |
