Method and apparatus for confirming that a filter drier has...

Details Method and apparatus for confirming that a filter drier has... Method and apparatus for confirming that a filter drier has...

2011-08-09

2011-08-09

Bullock, In Suk (Department: 1772)

Liquid purification or separation

Filter

Within flow line or flow line connected close casing

C210S429000, C210S235000, C062S299000, C062S298000, C137S558000, C251S149600

Reexamination Certificate

active

07992721

ABSTRACT:
A filter in some embodiments of the invention includes: a housing defining an interior chamber substantially sealed from outside of the housing; a valve located in the chamber biased to a first position where the valve maintains a seal between the interior chamber and outside of the housing; and an anchor fixed to the housing defining a surface for a spring to urge against and bias the valve to the first position and be compressed against when a receiver enters into the housing a moves the valve to a second position, the anchor defining, at least in part, flow paths wherein a pressurized fluid within the housing can communicate with an interior of the receiver to equalize a pressure within the chamber and the interior of the receiver; and a nipple attached to the housing having an interior passageway configured to permit the receiver to pass through in a substantially sealed manner. A method of attaching a filter to a filter receiver is also provided.

REFERENCES:
patent: 5150577 (1992-09-01), Mitchell et al.
patent: 2004/0011983 (2004-01-01), Maiville et al.
patent: 2006/0053832 (2006-03-01), Ballet et al.
U.S. Appl. No. 11/477,585, filed Jun. 30, 2006, Bakker, et al.
U.S. Appl. No. 11/709,825, filed Feb. 23, 2007, Chaudhry.
Robinair®; Operating Manual for Model 34788, Recovery, Recycling, Recharging Unit; 2006 SPX Corporation (Rev. A, Nov. 30, 2006), whole document.

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