Coupling device
OwnerTzung Ting Paninventor
Life of this patent
Estimating the term…
Abstract
A coupling device includes a coupling body, an expandable ring, a washer and a press guide tube. The coupling body includes a substantially cylindrical coupling head and a screw rod; wherein the coupling head consists essentially of an obliquity portion and a receiving portion, a longitudinal slot being provided within the coupling body and passing therethrough, the longitudinal slot communicating with the gas or liquid inside a to-be-detected device or object. The expandable ring and the washer are respectively fitted onto the receiving portion of the coupling body. The expandable ring is provided to enable the coupling body and a circular slot to be coupled tightly. The washer prevents the gas or liquid leakage from the contact surface between the coupling body and the circular slot.
Claims11
A coupling device configured to be attached to an object having a circular opening extending into the object from an external surface, the circular opening being bounded by an internal surface, the coupling device comprising:
- a coupling body configured to fit into the circular opening and having a substantially cylindrical coupling head and a threaded screw rod extending therefrom, said coupling head having an oblique portion and a receiving portion, said receiving portion located intermediate said oblique portion and said threaded screw rod and a longitudinal slot being disposed within said coupling body and passing therethrough;
- an expandable ring located on said receiving potion of said coupling body, the expandable ring having a surface facing the internal surface of the circular opening;
- a washer located on said receiving portion of said coupling body, intermediate said expandable ring and said threaded screw rod;
- and
- a guide tube having a head portion threaded onto said threaded screw rod of said coupling body, and a pressing portion extending over at least a portion of the receiving portion of the coupling head, wherein longitudinal movement of the guide tube relative to the coupling body causes the pressing portion to urge the expandable ring against the oblique portion of the coupling head causing the expandable ring to expand so as to frictionally engage the internal surface of the circular opening while the head portion is located outside the object displaced from the external surface.
Dependencies are inferred from the claim text.