초록 ▼

A liquid level sensor for use with a container filling device, in particular jars, which includes a dispensing tube from which the liquid falls downward and outward in a paraboloid bell-shaped stream, and which has a return air pipe and a ball valve sensor to stop filling when liquid droplets coat s

A liquid level sensor for use with a container filling device, in particular jars, which includes a dispensing tube from which the liquid falls downward and outward in a paraboloid bell-shaped stream, and which has a return air pipe and a ball valve sensor to stop filling when liquid droplets coat said ball. The air pipe and sensor are both located in the space enclosed by the bell-shaped stream. A sealing device contacts the jar rim during filling.

대표청구항 ▼

A device for filling liquid containers and having a housing with a lower edge and including a valve for automatically shutting off the flow of liquid into said containers at a pre-selected level comprising: a. a sealing means (2) mounted on said lower edge of said housing engaging the outer edge of

A device for filling liquid containers and having a housing with a lower edge and including a valve for automatically shutting off the flow of liquid into said containers at a pre-selected level comprising: a. a sealing means (2) mounted on said lower edge of said housing engaging the outer edge of said container with an airtight seal; b. a dispensing tube (1) mounted in said housing and connected to said valve, having means by which the liquid falls freely downwardly and outwardly in a paraboloid bell-shaped stream into said containers; c. a return air pipe (4) having an opening (15) mounted within said dispensing tube; d. sensor means mounted on said housing and located in the space enclosed by said bell-shaped stream and activated by the presence of liquid droplets; e. signal carrying means operatively connecting said sensor means and said valve for shutting off the liquid flow to said containers before said pre-selected level reaches said sensor means; and f. said bell-shaped stream (7) forms a pocket of trapped air in an outer area (10) which is enclosed and sealed airtight between said bell-shaped stream (7) said container (3) said sealing means (2) and dispensing tube (1) until the rising liquid in said container causes said bell-shaped stream to collapse and to spatter liquid droplets onto said sensor when said liquid reaches a predetermined level below said sensor, thereby activating said sensor and terminating the filling of said container.