Patent US4235557A successfully refreshed from Google Patents.
Patent US3890738A successfully refreshed from Google Patents.
US3890738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Set of interconnectable pressure elements for making construction models
Assignee: Individual
•
Filing: 1973-10-18
•
Granted: 1975-06-24
•
Expires: 1993-10-18
Abstract
Abstract A set of interconnectable pressure elements for making construction models, particularly buildings. These elements comprise knots, connecting rods restrainable to the knots, and walls for closing the spaces between the connecting rods and knots. A highly resistant rigid structure is formed, that can be readily provided at a low cost, since all of the elements can be easily obtained by plastic material molding.
Inventors
- 👤 Giancarlo Bassani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:05
CPC Classifications
G; G09; G09B; G09B25/00; G09B25/04; A; A63; A63H; A63H33/00; A63H33/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
A combination of pressure interconnectable construction elements comprising: connectors; elongated connecting rods; and cover plates; each said connector having at least two connection means angularly spaced from one another, and a recess formed on at least one side of each of said connection means; each said rod having a connection means at each of its ends removably pressure fitted within said connector connection means; and each of said plates having ridges projecting from at least one surface and adjacent the edges thereof, said ridges removably pressure fitted within the recesses in said connector.
Claim 2
Dependent Claim
93 words
A combination of pressure interconnectable construction elements comprising: connectors; elongated connecting rods; and cover plates; each said connector having at least two connection means angularly spaced from one another, and a recess formed on at least one side of each of said connection means; each said rod having a connection means at each of its ends removably pressure fitted within said connector connection means; and each of said plates having ridges projecting from at least one surface and adjacent the edges thereof, said ridges removably pressure fitted within the recesses in said connector.
Claim 3
Dependent Claim
26 words
The combination as claimed in claim 1, wherein said connectors, rods, and plates are shaped and sized so as to form smooth flush surfaces when assembled.
Claim 4
Dependent Claim
178 words
A combination of pressure interconnectable construction elements comprising; connectors; elongated connecting rods; and cover plates; each of said connectors having at least two wall means angularly spaced from one another, wall means defining a hole in said connector, each hole having a straight axis angularly spaced from the axis of any other hole by multiples of 90*, said wall means having a recess forming a straight groove on at least one side of each of said wall means, and a step adjacent said recesses having the same height as the width of said plates; each said rod having a connection means at each of its ends comprising end extensiOns each of which is adapted to be matingly engaged and pressure fitted in said hole; and each of said plates having ridges projecting from at least one surface and adjacent the edges thereof, said ridges adapted to matingly engage and pressure fit within said recesses in said connector whereby the outer surfaces of said plate and said connector are flush when said ridges are pressure fitted in said recesses.
Claim 5
Dependent Claim
178 words
A combination of pressure interconnectable construction elements comprising; connectors; elongated connecting rods; and cover plates; each of said connectors having at least two wall means angularly spaced from one another, wall means defining a hole in said connector, each hole having a straight axis angularly spaced from the axis of any other hole by multiples of 90*, said wall means having a recess forming a straight groove on at least one side of each of said wall means, and a step adjacent said recesses having the same height as the width of said plates; each said rod having a connection means at each of its ends comprising end extensiOns each of which is adapted to be matingly engaged and pressure fitted in said hole; and each of said plates having ridges projecting from at least one surface and adjacent the edges thereof, said ridges adapted to matingly engage and pressure fit within said recesses in said connector whereby the outer surfaces of said plate and said connector are flush when said ridges are pressure fitted in said recesses.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |