Oral irrigation apparatus and method operable from a pressurized water supply for selectively discharging a plurality of liquids
AssigneeWilliam R. Weissman
InventorsWilliam R. Weissman, Peter Liapis, George Sanchez, Bernardo Baran
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Abstract
An oral irrigating liquid dispenser (20) is disclosed which operates from a liquid pressure source (22) to dispense two liquids (54, 72) from an orifice (26). A valve member (24) moves to different positions to couple the source respectively to a piston face (64A), a conduit (60) and an outlet port (71). Flow control valves (80, 89) are provided to control flow from the orifice. Since no electrical power is involved the dispenser may safely be used in the presence of liquids and electrical grounds.
Claims18
Liquid dispensing dental apparatus operative from a pressurized supply of a liquid 1, comprising:
- a housing defining a chamber for holding a liquid 2, said housing further defining an orifice communicating with said chamber and an inlet port for receiving said liquid 1 from said pressurized supply;
- a piston having first and second faces, said piston slidably received in said chamber with said second face abutting said liquid 2;
- a conduit defined by said housing to communicate with said orifice;
- and
- valve means for coupling said inlet port with a selectable one of said conduit and said piston first face.
Liquid dispensing dental apparatus operative from a pressurized supply of a liquid 1, comprising:
- a housing defining a chamber for holding a liquid 2, said housing further defining an orifice communicating with said chamber and an inlet port for receiving said liquid 1 from said pressurized supply;
- a piston having first and second faces, said piston slidably received in said chamber with said second face abutting said liquid 2;
- a conduit defined by said housing to communicate with said orifice;
- a channel defined by said housing to communicate with said inlet port, said piston first face and said, conduit;
- and
- a valve member slidably received in said channel for movement between first and second position, said valve member defining a first passage to couple, in said first position, said inlet port with said conduit, and to couple, in said second position, said inlet port with said piston first face.
A method for dental purposes of dispensing liquids in response to a pressurized supply of a liquid 1, comprising the steps of:
- providing a housing;
- defining, with said housing, a chamber for holding a liquid 2, an orifice communicating with said chamber and an inlet port for receiving said liquid 1 from said pressurized supply;
- providing a piston having first and second faces;
- receiving said piston slidably in said chamber with said second face abutting said liquid 2;
- defining, with said housing, a conduit to communicate with said orifice;
- and
- coupling said inlet port with a selectable one of said conduit and said piston first face to respectively dispense said liquid 1 or said liquid 2 from said orifice.
Dependencies are inferred from the claim text.