Proportional plotting device
Description
FIG. 1 is a top front isometric view of a proportional plotting device showing my new design;
FIG. 2 is a fragmentary cross-section taken on line 2--2 of FIG. 1;
FIG. 3 is an enlarged top plan view of FIG. 1 with portions fragmentarily shown for convenience of illustration;
FIG. 4 is a right end elevation thereof;
FIG. 5 is a left end elevation thereof;
FIG. 6 is a fragmentary front elevation of the movable block separately shown for clarity of illustration;
FIG. 7 is a fragmentary rear elevation of the fixed block shown separately for clarity of illustration; and
FIG. 8 is a fragmentary bottom plan view of the right hand side of FIG. 3.
Referenced Cited
U.S. Patent Documents
Foreign Patent Documents
Other references
120621 | November 1871 | Chassaing |
2331298 | October 1943 | Bennett |
2685748 | August 1954 | Gilbert |
257335 | February 1928 | ITX |
- Dietzgen Co. Catalog, 1946, p. 243, item #1803C.
Patent History
Patent number: D277365
Type: Grant
Filed: Jun 23, 1982
Date of Patent: Jan 29, 1985
Inventor: Gary M. Sogorka (Newfoundland, NJ)
Primary Examiner: Bernard Ansher
Assistant Examiner: Terry Pfeffer
Attorney: Bernard J. Murphy
Application Number: 6/391,483
Type: Grant
Filed: Jun 23, 1982
Date of Patent: Jan 29, 1985
Inventor: Gary M. Sogorka (Newfoundland, NJ)
Primary Examiner: Bernard Ansher
Assistant Examiner: Terry Pfeffer
Attorney: Bernard J. Murphy
Application Number: 6/391,483
Classifications
Current U.S. Class:
Geometric (5) (D10/61);
33/137L