Combined filter and regulator unit for pneumatic circuits
FIG. 1 is a top, rear and left side perspective view of a combined filter and regulator unit for pneumatic circuits showing our new design;
FIG. 2 is a right side elevational view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a rear elevational view thereof;
FIG. 7 is a top, front and left side perspective view of a combined filter and regulator unit for pneumatic circuits showing a second embodiment of our new design;
FIG. 8 is a top, front and right side perspective view of FIG. 6;
FIG. 9 is a top rear and right side perspective view of FIG. 6;
FIG. 10 is an enlarged top plan view of FIG. 6;
FIG. 11 is an enlarged bottom plan view of FIG. 6; and,
FIG. 12 is a rear elevational view of FIG. 6.
Type: Grant
Filed: Apr 19, 1991
Date of Patent: Dec 22, 1992
Inventors: Carlos E. Ridolfi (1875 Wilde, Province of Buenos Aires), Higinio B. Ridolfi (1875 Wilde, Province of Buenos Aires)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Law Firm: Keck, Mahin & Cate
Application Number: 7/687,537