초록 ▼

A quarter turn quick connect fitting assembly (10) for connecting miniature fluid conduits, such as tubing, includes a first fitting (12) having radially projecting pins (28) and a second fitting (14) located within a rotatable quarter turn nut (16) having spiral grooves (48) which receive the pins.

A quarter turn quick connect fitting assembly (10) for connecting miniature fluid conduits, such as tubing, includes a first fitting (12) having radially projecting pins (28) and a second fitting (14) located within a rotatable quarter turn nut (16) having spiral grooves (48) which receive the pins. The first fitting defines a central passage (26) and the second fitting defines a central passage (42) which may each be configured to slidably receive a hollow tube set (104), or to threadably receive an externally threaded mating fitting. The quarter turn quick connect fitting can be configured to attach to the end of a column, and can include an adapter (158), which houses a guard column (160), or a frit (188) for filtering the fluid passing through the quarter turn quick connect fitting assembly. The quarter turn quick connect fitting is assembled by sliding the pins of the first fitting into the grooves of the quarter turn nut and rotating the quarter turn nut through approximately 90.degree. with respect to the first fitting, thereby securely seating the pins within angled areas defined at the ends of the grooves.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A quick connect high pressure liquid chromatograph fitting assembly for coupling first and second analytical miniature fluid conduits, comprising:(a) a first fitting defining a cen

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A quick connect high pressure liquid chromatograph fitting assembly for coupling first and second analytical miniature fluid conduits, comprising:(a) a first fitting defining a central passage adapted for receiving therein a first analytical miniature fluid conduit defining an internal diameter of no greater than 0.040 inch, the first fitting defining at least one first radial engaging surface;(b) a second fitting defining a central passage adapted for receiving therein a second analytical miniature fluid conduit defining an internal diameter of no greater than 0.040 inch,(c) a polymeric sealing element;(d) a nut provided on the second fitting, wherein the nut defines at least one second radial engaging surface, wherein the nut is selectively rotatable less than 360.degree. relative to the first fitting to engage the first and second engaging surfaces to compress and seal the polymeric sealing element between the first and second fittings for fluid flow communication between the first and second analytical miniature fluid conduits; and(e) a biasing member engageable between the first and second fittings to bias the second fitting towards the first fitting upon engagement of the first and second fittings, said quick connect high pressure liquid chromatograph fitting assembly defining a zero dead volume fluid path for coupling said first and said second analytical miniature fluid conduits and being capable of withstanding a maximum internal fluid pressure of greater than 6000 p.s.i..