Pressure sensitive windshield washer nozzle
AssigneeGeneral Motors Corporation
InventorJohn S. Murawa
Life of this patent
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Abstract
A windshield washer nozzle for an automotive vehicle, including a housing for retaining the nozzle, at least one fluid input port defined by the housing; and at least a first flow path and a second flow path defined by the housing in fluid communication with the fluid input port. Separate pressure flow control valves are retained in the first flow path and the second flow path, wherein fluid at a pressure below a pressure P1 can be directed through the input port and caused to flow through the first flow path, although flow is blocked through the second flow path. Alternatively, fluid in excess of a pressure P2 can be directed through the input port and caused to flow through the second flow path while flow is blocked through the first flow path.
Claims11
A windshield washer nozzle for an automotive vehicle, comprising:
- a housing;
- a first fluid input port defined by the housing;
- a second fluid input port defined by the housing;
- at least a first flow path and a second flow path defined by the housing, the first flow path and the second flow path being in fluid communication with the respective first fluid input port and the second fluid input port, wherein a fluid at a pressure below a pressure P1 can be directed through the first fluid input port and caused to flow through the first flow path while fluid flow through the second flow path is blocked and a fluid al a pressure in excess of a pressure P2 can be directed through the second fluid input port and caused to flow through the second flow path while the fluid flow through the first flow path is blocked;
- and
- a pump coupled to the input ports, wherein the pump can be operated in a first direction to generate a pressure P2 or in a second direction to generate a pressure P1.
A windshield washer nozzle for an automotive vehicle, comprising:
- a housing;
- a first fluid input port defined by the housing;
- a second fluid input port defined by the housing;
- at least a first flow path and a second flow path defined by the housing, the first flow path and the second flow path being in fluid communication with the respective first fluid input port and the second fluid input port, wherein a fluid at a pressure below a pressure P1 can be directed through the first input port and caused to flow through the first flow path while flow through the second flow path is blocked and a fluid at a pressure in excess of a pressure P2 can be directed through the second input port and caused to flow through the second flow path while flow is blocked through the first flow path;
- and
- a pump in fluid communication with the first and second input ports, wherein the pump can be operated in the reverse direction to generate an operating pressure below the pressure P1 and in the forward direction to generate a second operating pressure in excess of the pressure P2.
A windshield washer nozzle for an automotive vehicle, comprising:
- a housing;
- a first fluid input port defined by the housing;
- a second fluid input port defined by the housing;
- at least a first flow path and a second flow path defined by the housing, the first flow path and the second flow path being in fluid communication with the respective first fluid input port and the second fluid input port;
- a first flow control valve supported by the first flow path;
- a second flow control valve supported by the second flow path;
- and
- a pump in fluid communication with the input ports, wherein the pump can be operated in the reverse direction to generate an operating pressure below a pressure P1 and in the forward direction to generate a second operating pressure in excess of a pressure P2,
- whereby a fluid at a pressure below the pressure P1 can be directed through the first input port and caused to flow through the first flow path while flow through the second flow path is blocked and a fluid at a pressure in excess of the pressure P2 can be directed through the second input port and caused to flow through the second flow path while flow through the first flow path is blocked.
Dependencies are inferred from the claim text.