Brush assembly with pulsating water jet discharge
First Claim
1. A brush assembly which comprises:
- a brush block member having a face, a multiplicity of bristles mounted on said face and defining a clear space;
a discharge device, said discharge device being situated in said space;
said discharge device comprising a hollow housing, said housing having a first water inlet at one end and means comprising at least two discharge orifices spaced apart from said first inlet in a symmetrical pattern about an axis normal to said face;
a valve member mounted in said housing for rotation about said axis, said valve member having a valve port establishing fluid communication sequentially between said first inlet and one of said orifices, then with portions of both of said orifices, then with the other of said orifices and then with portions of both orifices in a repeating cycle;
means in said housing defining a water flow passage between said first inlet and said valve port for conducting water from said first inlet to said valve port, said water flow passage including a constricted passageway in communication with said first inlet;
a second water inlet situated in said brush assembly and in fluid communication with said first water inlet, said second inlet including means for attachment to a pressurized water line;
turbine means in said housing and situated in said water flow passage immediately downstream of said constricted passageway; and
means kinematically connecting said turbine means to said valve member for rotating said valve member in response to the flow of water through said flow passage.
1 Assignment
0 Petitions
Accused Products
Abstract
A brush assembly, attachable to a pressurized water line, produces at least two alternating pulsating jet discharges of water. One discharge comprises a linear stream and the other comprises a spray. A nozzle housing detachably mounted on the head of the brush assembly is employed to deliver the intermittently, interrupted or pulsating water jet discharges. Water passing through the brush assembly and the housing drives a turbine blade assembly in the housing. In turn, the turbine blade assembly rotates rotatable valve member at a rotary speed dependent upon the initial pressure of water entering the brush assembly. Water flows through an inlet of the housing through two flow paths. In one flow path, water flows through a valve port in the valve member and out through the discharge orifices in the housing. In the second flow path, water flows around the valve member and out through the discharge orifices and housing. The rotation of the valve member cyclically interrupts water communication between the inlet and the discharge orifices along the first flow path. The configuration of the rotating valve port, the arrangement of the orifices and the second flow path maintain back pressure at the rotating valve port at a substantially constant level regardless of the rotary position of the rotating valve port.
68 Citations
17 Claims
-
1. A brush assembly which comprises:
-
a brush block member having a face, a multiplicity of bristles mounted on said face and defining a clear space; a discharge device, said discharge device being situated in said space; said discharge device comprising a hollow housing, said housing having a first water inlet at one end and means comprising at least two discharge orifices spaced apart from said first inlet in a symmetrical pattern about an axis normal to said face; a valve member mounted in said housing for rotation about said axis, said valve member having a valve port establishing fluid communication sequentially between said first inlet and one of said orifices, then with portions of both of said orifices, then with the other of said orifices and then with portions of both orifices in a repeating cycle; means in said housing defining a water flow passage between said first inlet and said valve port for conducting water from said first inlet to said valve port, said water flow passage including a constricted passageway in communication with said first inlet; a second water inlet situated in said brush assembly and in fluid communication with said first water inlet, said second inlet including means for attachment to a pressurized water line; turbine means in said housing and situated in said water flow passage immediately downstream of said constricted passageway; and means kinematically connecting said turbine means to said valve member for rotating said valve member in response to the flow of water through said flow passage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 17)
-
-
14. A brush assembly which comprises:
-
a brush block member having a face, a multiplicity of bristles mounted on said face and defining a clear space; a discharge device, said discharge device being situated in said space, said discharge device comprising a hollow housing, said housing having a first water inlet at one end and means comprising a discharge orifice spaced apart from said inlet; a valve member mounted in said housing for rotation about said axis, said valve member having a valve port establishing fluid communication between said first inlet and said orifice and then blocking fluid communication between said inlet and said orifice in a repeating cycle; means in said housing defining a water flow passage between said first inlet and said valve port for conducting water from said first inlet to said valve port, said water flow passage including a constricted passageway in communication with said first inlet; a second water inlet situated in said brush assembly and in fluid communication with said first water inlet, said second inlet including means for attachment to a pressurized water line; turbine means in said housing and situated in said water flow passage immediately downstream of said constricted passageway; and means kinematically connecting said turbine means to said valve member for rotating said valve member in response to the flow of water through said flow passage.
-
Specification