Plotter pen housing

Description

FIG. 1 is a perspective view of a plotter pen housing showing our new design;

FIG. 2 lis a side elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a cross-sectional view thereof, taken on line 4--4 of FIG. 2;

FIG. 5 is a cross-sectional view thereof, taken on line 5--5 of FIG. 2; and,

FIG. 6 is a partial cross-sectional view thereof, on an enlarged scale.

Referenced Cited
U.S. Patent Documents
2706580 April 1955 Keith
2714475 August 1955 Roehrich
3463323 August 1969 Riepe
3788754 January 1974 Glasa
4102584 July 25, 1978 Anderka
4823148 April 18, 1989 Sieber et al.
4928121 May 22, 1990 Raahauge
Other references
  • Devoke Catalog item ploter pen, p. 34, Spring 1987. Global Catalog plotter pens, p. 41, Feb. 1987. Global Catalog plotter pens, p. 14, Oct. 1987. Fidelity Graphic Arts Catalog plotter pen, p. 25. Business Land Catalog plotter pen p. 80, 1989.
Patent History
Patent number: D352703
Type: Grant
Filed: Apr 18, 1990
Date of Patent: Nov 22, 1994
Assignee: Texas Instruments Incorporated (Dallas, TX)
Inventors: Larry D. Mitcham (Temple, TX), Kelsey R. Walker (Hockley, TX), Robert E. Pitts (Hockley, TX)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Attorneys: Ronald O. Neerings, James C. Kesterson, Richard L. Donaldson
Application Number: 7/510,489
Classifications
Current U.S. Class: D14/114