Direct screw-on cartridge holder with self-adjustable connection

Details Direct screw-on cartridge holder with self-adjustable connection Direct screw-on cartridge holder with self-adjustable connection

1997-10-03

2000-12-19

Kim, John

Liquid purification or separation

Processes

Chromatography

2101982, 96106, B01D 1508

Patent

active

061623628

ABSTRACT:
A cartridge holder includes a holder body having a cavity along a longitudinal axis of the holder body. A floating screw has a longitudinal axis and a hole through the length of the floating screw. The floating screw is adapted to engage with the cavity in such a way that the floating screw is movable relative to the holder body along the longitudinal axis of the holder body. But rotary movement of the floating screw around the longitudinal axis of the holder body is confined by a restriction of the cavity. An outlet unit having a stem with a central hole and a length greater than that of the floating screw is adapted to be movably inserted into the hole of the floating screw, so that a first end of the outlet unit extends out of the hole and a second end of the outlet unit is engaged with the cavity. An end cap is provided to engage with the cavity. In use a cartridge is placed inside the cavity of the holder body between the end cap and the outlet unit. The floating screw can be screwed onto the endfitting by turning the holder body and, in the meantime, the outlet unit is pushed toward the endfitting so that a zero dead volume connection is achieved. Thus, the cartridge holder fits to all brands of column endfittings by self-adjusting the configuration of its connection unit. The cartridge holder also can be modified to connect a tubing directly to an endfitting.

REFERENCES:
patent: 4026803 (1977-05-01), Abrahams et al.
patent: 4173363 (1979-11-01), Stearns
patent: 4181853 (1980-01-01), Abu-Shumays et al.
patent: 4283280 (1981-08-01), Brownlee
patent: 4451363 (1984-05-01), Brownlee et al.
patent: 4451364 (1984-05-01), Higgins et al.
patent: 4565632 (1986-01-01), Hatch et al.
patent: 4888112 (1989-12-01), Kronwald
patent: 5227059 (1993-07-01), Shepherd
patent: 5338448 (1994-08-01), Gjerde
patent: 5472598 (1995-12-01), Schick
patent: 5482628 (1996-01-01), Schick
PCT International Search Report dated Dec. 22, 1997.
Product catalog of Keystone Scientific, Inc., "Microbore Guard Columns," (Undated).
Product catalog of Alltech Associates, Inc., "Guard Columns," (Undated).
Product catalog of Upchurch Scientific, "Guard Cartridge Assemblies," (Undated).
Product catalog of Higgins Analytical, Inc., "Haiguard," (Undated).
Product catalog of Sarasep, Inc., "Standard and Micro Polymeric Columns Micro IC/HPLC," (Undated).
Product catalog of Waters Corporation, "Universal Guard Column Holder," (Undated).
Product catalog of Supelco, "Pelliguard Guard Columns, Superlguard Guard Columns," (Undated).
Product catalog of Phase Separations, Inc., "Guard Columns and Fittings," (Undated).
Catalog of Metachem Technologies, Inc., "Safeguard Cartridge System," (Undated).
Catalog of The Perkin-Elmer Corporation, "Prolong Column Life with NewGuard Cartridges," (Undated).
YMC, Incorporated, "YMC-Pack Cartridge Guard Columns," (Undated).
Whatman, Inc., "HPLC Guard Cartridge System," (Undated).
Catalog of Optimize Technologies, Inc., "Optimize Innovations," (Undated).

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