Manual switch for a closed suction tube
OwnerTi-Li CHANGinventor
Life of this patent
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Abstract
A manual switch has a body, a button, a valve rod and a biasing member. The body has a valve mount having multiple holding ribs. The valve rod is mounted slidably in the valve mount, is pressed by the button and has a valve rod, a mounting tube and an O-ring. The rod body has an outer diameter smaller than the inner diameter of the valve mount. The mounting tube is mounted securely around the rod body and has an outer diameter being equal to the inner diameter of the valve mount and an outer surface abutting with the holding ribs in the valve mount. The O-ring is mounted around the rod body and abuts with the inner surface of the valve mount to provide a sealing effect to the valve rod and the valve mount.
Claims17
A manual switch for a closed suction tube comprising:
- a hollow body having
- two ends;
- a connecting tube mounted through the body and having two ends protruding respectively from the ends of the body;
- and
- a hollow valve mount formed in the body, communicating with the connecting tube and having an inner diameter, an inner surface and multiple holding ribs formed around the inner surface, arranged in a circle and spaced from each other;
- a button connected pivotally to the body at a pivotal position on the body;
- a valve rod mounted slidably in the valve mount, pressed by the button and comprising
- a rod body having a top, a bottom and an outer diameter smaller than the inner diameter of the valve mount;
- a mounting tube mounted securely around the bottom of the rod body and having
- an outer diameter being equal to the inner diameter of the valve mount to close the communication between the ends of the connecting tube;
- and
- an outer surface abutting with the holding ribs in the valve mount;
- an O-ring mounted around the rod body adjacent to the top of the rod body and abutting with the inner surface of the valve mount to provide a sealing effect to the valve rod and the valve mount;
- a biasing member mounted in the valve mount and connected to the valve rod to provide a recoil force to the valve rod.
Dependencies are inferred from the claim text.