The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 28, 1993
Filed:
Nov. 15, 1991
Other;
Abstract
A changeable grid system kit for constructing three-dimensional toy and scale model designs, including a base component fabricated of a tough, resilient material, slots formed in the top face of the base, and slats which are insertable into the slots. The invention is designed to ensure that there is little or no loss in the tight fit between the slats and the base material after repeated insertion and removal of the slats. The base material is selected so as to avoid fracturing or splintering caused by repeated use or incidental contact. One such material is a closed-cell crosslinked polyethylene foam. In one embodiment of the invention, the base component is placed vertically such that the slats extend from the slots to form quasi-horizontal surfaces. In this orientation the present invention may be used as an educational tool to illustrate such physical principles as gravity, friction, and the like. A ball may be rolled down pathways created by insertion of the slats into the slots in a variety of configurations, thereby illustrating the principles noted and encouraging experimentation by the student.