Viewing window
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FIG. 1 is a top plan view of a viewing window showing our new design;
FIG. 2 is a bottom plan view thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a right side elevational view; the left side being a mirror image thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a top plan view of a second embodiment of a viewing window showing our new design;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a front elevational view thereof;
FIG. 9 is a right side elevational view, the left side being a mirror image thereof;
FIG. 10 is a rear elevational view thereof;
FIG. 11 is a right side elevational view of the viewing window in FIG. 4 with the cover raised; and
FIG. 12 is a right side elevational view of the viewing window in FIG. 9 with the cover raised.
Type: Grant
Filed: May 18, 1989
Date of Patent: Dec 3, 1991
Assignee: Tsubakimoto Bulk Systems Corporation (Osaka)
Inventors: Chozo Matsumoto (Mie), Tsuyoshi Yonezawa (Osaka)
Primary Examiner: A. Hugo Word
Assistant Examiner: Doris Clark
Law Firm: Dann, Dorfman, Herrell and Skillman
Application Number: 7/354,697