Joints and connections – Rigid angle
Patent
1990-03-23
1991-11-26
Kundrat, Andrew V.
Joints and connections
Rigid angle
4034081, 24578, 446113, B25G 300
Patent
active
050678485
ABSTRACT:
Connectors for attaching thin, lightweight, walls of the type appearing in children's toys made up of geometrical units, and methods for using the same. In one embodiment, the connector consists of a cavity with a basal opening built into each of the walls to be connected and a separate insertable member, each end of which snaps into a corresponding cavity on each wall. The insertable member consists of a central element attached at each of its polar ends to a smaller distal element. The basal opening of the cavity may consist of an opening enclosed by the wall or may be a hole through the wall. The smaller distal element of the insertable member is of variable shape and diameter depending upon the specific attachment requirement. Other embodiments include connectors without a separate insertable member, wherein the cavity and the insertable member are part of the wall, and, in one embodiment, may be inverted, and, in another embodiment, a fixed protuberaance on one wall may be inserted into an opening on another wall.
REFERENCES:
patent: 3066501 (1962-12-01), Charles et al.
patent: 3367340 (1968-02-01), David et al.
patent: 3514815 (1970-06-01), Evans
patent: 3597874 (1971-08-01), Ogsbury et al.
patent: 3990131 (1976-11-01), Okamura
patent: 4037878 (1977-07-01), Connelly
Kundrat Andrew V.
MacDonald, Jr. George W.
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