Instructional apparatus with elastic sheet

Details Instructional apparatus with elastic sheet Instructional apparatus with elastic sheet

Filed on

1976-08-16

Date issued

1978-01-03

Examiner

Grieb, William H.

Other Related Categories

35 48A, G09B 308

Type

Patent

Status

active

Patent number

040658589

Description

ABSTRACT:
Instructional apparatus employs a holding mechanism which has depressions in its upper surface of either one depth or different depths. A printed format containing pre-punched openings representing answer selections is disposed over the upper surface, and some or all of the openings are aligned with corresponding depressions. Sandwiched between the printed format and the upper surface is a highly elastic sheet of rubber-like material. The user pushes a rounded tip stylus through the selected opening and thence into the elastic sheet, and the degree of penetration by the stylus through the upper surface down into an underlying depression or hole indicates the correctness of the response and provides instantaneous feedback. Upon withdrawal of the stylus the elastic sheet returns to its former shape with no deformation; thus the apparatus may be used by many students without replacing formats or other used components.

REFERENCES:
patent: 3106027 (1963-10-01), Thelen
patent: 3177595 (1965-04-01), Yonker et al.
patent: 3421231 (1969-01-01), Kane
patent: 3747229 (1973-07-01), Harte
patent: 3964176 (1976-06-01), Harte

Affiliated with

Also associated with

Rating

Instructional apparatus with elastic sheet does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Instructional apparatus with elastic sheet, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Instructional apparatus with elastic sheet will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-274180