US3698124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction toy
Assignee: REITZEL DESIGNS Inc
•
Filing: 1971-06-16
•
Granted: 1972-10-17
•
Expires: 1991-06-16
Abstract
Abstract A construction toy having a plurality of equilateral triangular construction elements adapted to be sequentially interlocked together to create a variety of free form constructions. Each triangle is transparent, flexible, made of resilient plastic, and has locking slots extending from the triangle vertices toward the triangle centroid. The locking slots have a working width less than the triangle thickness which allows the triangles to be firmly interlocked together. The locking slots also have a length of approximately three-sevenths of the distance from a triangle vertex to the triangle centroid.
Inventors
- 👤 John S Reitzel
- 👤 Gail L Reitzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:06
CPC Classifications
A; A63; A63H; A63H33/00; A63H33/04; A63H33/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A construction toy having a plurality of identical construction elements adapted to be sequentially interlocked together to create a free form configuration, each said construction element comprising: a flexible, planar, equilateral triangle having three pairs of facing walls therein forming three locking slots extending from the three triangle Vertices toward the triangle centroid, each said pair of slot walls being spaced apart, over a substantial portion of their length beginning at their centroid ends, a distance less than the thickness of said construction element wherein said initially planar construction elements when interlocked together become warped out of their initially planar configurations and are non-perpendicular to each other.
Claim 2
Dependent Claim
107 words
A construction toy having a plurality of identical construction elements adapted to be sequentially interlocked together to create a free form configuration, each said construction element comprising: a flexible, planar, equilateral triangle having three pairs of facing walls therein forming three locking slots extending from the three triangle Vertices toward the triangle centroid, each said pair of slot walls being spaced apart, over a substantial portion of their length beginning at their centroid ends, a distance less than the thickness of said construction element wherein said initially planar construction elements when interlocked together become warped out of their initially planar configurations and are non-perpendicular to each other.
Claim 3
Dependent Claim
31 words
The construction toy of claim 1 wherein each said slot has a length less than one-half and more than one-fourth of the distance from a triangle vertex to the triangle centroid.
Claim 4
Dependent Claim
12 words
The construction toy of claim 1 wherein said construction element is transparent.
Claim 5
Dependent Claim
15 words
The construction toy of claim 1 wherein said construction element is made of resilient plastic.
Claim 6
Dependent Claim
29 words
The construction toy of claim 1 wherein said construction element slots each have a length of approximately three-sevenths of the distance from a triangle vertex to the triangle centroid.
Claim 7
Dependent Claim
40 words
The construction toy of claim 1 wherein said construction element is transparent, flexible and made of resilient plastic, and said locking slots each have a length of approximately three-sevenths of the distance from a triangle vertex to the triangle centroid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |