Combined filter housing and filters for sewage

Description

FIG. 1 is a top, front perspective view of a combined filter housing and filters for sewage showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a cross-sectional view thereof, taken on line 3--3 of FIG. 1;

FIG. 4 is a top plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top, front perspective view of a second embodiment thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a cross sectional view thereof, taken on line 8--8 of FIG. 6;

FIG. 9 is a top plan view thereof; and

FIG. 10 is a rear elevational view thereof.

The texture on the filters is shown partially for ease of illustration.

Referenced Cited
U.S. Patent Documents
1165741 December 1915 Amos
1585418 May 1926 Rosenberg
3204391 September 1965 Schwab
3301401 January 1967 Mau
3317047 May 1967 Hansen
4419232 December 6, 1983 Arntyr et al.
4448686 May 15, 1984 Friedman
4871454 October 3, 1989 Zott
Patent History
Patent number: D320839
Type: Grant
Filed: Apr 11, 1989
Date of Patent: Oct 15, 1991
Assignee: Copa Products Limited (Kent)
Inventor: David P. Froud (Marden)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Law Firm: Darby & Darby
Application Number: 7/336,312
Classifications
Current U.S. Class: Filter Or Strainer (2) (D23/209)