Multiple motor vacuum check valve
OwnerJon T. Hendersoninventor
Life of this patent
Estimating the term…
Abstract
A vacuum system has multiple vacuum motors and a receptacle in fluid communication with each of the motors. Each of the motors has a check valve that has an opening spaced apart from the respective vacuum motor by a distance at least as great as an effective diameter of the vacuum motor's inlet. Each of the check valves preferably has an airflow clearance that is at least as great as said effective diameter, and the check valves may also include warning signals that can indicate working motors and a bad motor.
Claims20
A vacuum system, comprising:
- an intake port;
- a receptacle in fluid communication with said intake port;
- a plurality of vacuum motors, wherein each of said vacuum motors has an inlet in fluid communication with said intake port and has an air outlet spaced apart from said inlet, and wherein each of said vacuum motors has an effective diameter for an airflow rate through said inlet and said air outlet;
- and
- a plurality of check valves, wherein each of said check valves is respectively in fluid communication with said vacuum motors, and wherein each of said check valves has an opening spaced apart from said respective vacuum motor inlet by a distance at least as great as said effective diameter,
- wherein at least one of said vacuum motors is inoperative while at least another of said vacuum motors is operative, wherein each of said check valves has an airflow clearance that is at least as great as said effective diameter, and wherein said check valve in fluid communication with said inoperative motor is pulled closed by a pressure differential between an ambient pressure at said air outlet side of said inoperative motor and a sub-ambient pressure within said receptacle.
A vacuum system, comprising:
- an intake port;
- a receptacle in fluid communication with said intake port;
- a plurality of vacuum motors, wherein each of said vacuum motors has an inlet in fluid communication with said intake port and has an air outlet spaced apart from said inlet, and wherein each of said vacuum motors has an effective diameter for an airflow rate through said inlet and said air outlet;
- a plurality of check valves, wherein each of said check valves is respectively in fluid communication with said vacuum motors, and wherein each of said check valves has an opening spaced apart from said respective vacuum motor by a distance at least as great as said effective diameter;
- and
- a bad motor warning signal in operative communication with said check valve.
An improved vacuum system of the type comprising a plurality of vacuum motors and a receptacle in fluid communication with each of the vacuum motors, wherein each of the vacuum motors has an effective diameter for an airflow rate through the inlet and the air outlet, wherein the improvement comprises:
- a plurality of check valves, wherein each of said check valves is respectively in fluid communication with the vacuum motors, wherein each one of said check valves is in a biased closed position when said vacuum motors are off, and wherein each of said check valves has an opening spaced apart from the respective vacuum motor by a distance at least as great as said effective diameter.
An improved vacuum system of the type comprising a plurality of vacuum motors and a receptacle in fluid communication with each of the vacuum motors, wherein each of the vacuum motors has an effective diameter for an airflow rate through an inlet and an air outlet, wherein the improvement comprises:
- a plurality of check valves, wherein each of said check valves is respectively in fluid communication with the vacuum motors, and wherein each of said check valves has an opening spaced apart from the respective vacuum motor by a distance at least as great as said effective diameter, and wherein at least one of the vacuum motors is inoperative while at least another of the vacuum motors is operative, wherein each of said check valves has an airflow clearance that is at least as great as said effective diameter, and wherein said check valve in fluid communication with the inoperative motor is pulled closed by a pressure differential between an ambient pressure at said air outlet side of said inoperative motor and a sub-ambient pressure within the receptacle.
Dependencies are inferred from the claim text.