Portable learning unit

- Control Data Corporation
Description

FIG. 1 is a perspective view of the preferred embodiment of a portable learning unit showing a portion of the front, left side and top thereof;

FIG. 2 is an enlarged right side view thereof;

FIG. 3 is a rearward perspective view showing a portion of the rear, right side and top thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a frontal view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a frontal view of a portable learning unit in accordance with a modification of the present design;

FIG. 8 is a perspective view of the modification illustrated in FIG. 7 showing a portion of the front, left side and top thereof; and,

FIG. 9 is a perspective view as in FIGS. 1 and 8 showing the portable learning unit in a closed position.

The bottom of both embodiments is plain and unornamented.

The right side, rear and rearward perspective views of the embodiment shown in FIGS. 7 and 8, are the same as shown in FIGS. 2, 6 and 3, respectively.

The top of the embodiment shown in FIGS. 7 and 8 is the same as that shown in FIG. 4, except that the keyboard and telephone set shown in FIG. 4 are not present in a top view of embodiment shown in FIGS. 7 and 8.

The left side of both embodiments is a mirror image of FIG. 2.

Referenced Cited
U.S. Patent Documents
D232607 September 1974 Kramer et al.
3160451 December 1964 Lewis
3233346 February 1966 Cornberg
3728801 April 1973 Beckman
4046437 September 6, 1977 Caron et al.
Other references
  • Sweet's Architectural Cat. File, 1969, 36b/Su, p. 4, Suttle Corp., study carrels.
Patent History
Patent number: D252635
Type: Grant
Filed: Apr 27, 1977
Date of Patent: Aug 14, 1979
Assignee: Control Data Corporation (Minneapolis, MN)
Inventor: Eugene Richgels (West St. Paul, MN)
Primary Examiner: Melvin B. Feifer
Attorney: Robert M. Angus
Application Number: 5/791,459
Classifications
Current U.S. Class: Sensory Feedback, E.g., Audio-visual Teaching Machine (D19/60); D/6157
International Classification: D1401;