Filter

Description

FIG. 1 is an isometric view of a filter, showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side view, the left side being a mirror image thereof;

FIG. 5 is a front view, the rear view being a mirror image thereof;

FIG. 6 is an exploded view of the filter showing the upper and lower filter elements removed from the filter housing;

FIG. 7 is a bottom plan view with the bottom filter removed;

FIG. 8 is a longitudinal cross-sectional view taken along line 8--8 of FIG. 2; and,

FIG. 9 is a longitudinal cross-sectional view of a second embodiment of the filter taken along line 9--9 of FIG. 2, showing a pair of filter elements, with all other sides being identical to that shown in FIGS. 1-6.

Referenced Cited
U.S. Patent Documents
533854 February 1895 Loeb
1499864 July 1924 Gordon
1573656 February 1926 Terhune
2338345 January 1944 Mather
2552847 May 1951 Farr et al.
4277443 July 7, 1981 Van der Smissen et al.
4637877 January 20, 1987 Hartmann et al.
4881313 November 21, 1989 Artinyan et al.
4995891 February 26, 1991 Jaynes
5037460 August 6, 1991 Machado
Foreign Patent Documents
433437 August 1926 DEX
374460 February 1964 CHX
365478 January 1932 GBX
Patent History
Patent number: D389243
Type: Grant
Filed: Dec 19, 1995
Date of Patent: Jan 13, 1998
Assignee: Nellcor Puritan Bennett Incorporated (St. Charles, MO)
Inventors: Gregory R. Miller (St. Louis, MO), Kyle Adriance (St. Charles, MO), Stanley Philipak (St. Charles, MO)
Primary Examiner: Stella Reid
Attorney: Paul M. Denk
Application Number: 0/48,059
Classifications
Current U.S. Class: Filter (37) (D24/162)
International Classification: 2401;