Exercise devices – Gymnastic – Play area climbing or traversing arrangement
Patent
1994-04-11
1998-05-26
Donnelly, Jerome
Exercise devices
Gymnastic
Play area climbing or traversing arrangement
482 23, 482 35, 182178, A63B 0100
Patent
active
057556415
ABSTRACT:
Apparatus for fabricating three-dimensional structures for children is provided in which four-way, three-way and elbow fittings having opposing flat sides with orthogonally oriented sockets are used to interconnect cut-to-length tubular members. An end portion of a tubular member is connected to an end portion of a socket by a fastener having a pair of spring loaded opposing pins thereon. The fastener is positioned in a tubular member with its opposing pins protruding out of diametrically opposing holes on the end portion thereof. The end of a tubular member is inserted with a slip fit into a socket until it contacts an internal shoulder thereon and is then rotated until the opposing pins snap into diametrically opposing holes on the end portion of the socket. By using unions in the form of short tubular members to interconnect selected ones of the sockets of fittings, unitary coupling structures are provided having patterns of socket orientations thereon which serve to connect to tubular members or by unions to other sockets as needed to provide a desired three-dimensional structure.
REFERENCES:
patent: 1471465 (1923-10-01), Hinton
patent: 2126636 (1938-08-01), Horne
patent: 4247216 (1981-01-01), Pansini
patent: 4770467 (1988-09-01), Zinn
patent: 5400870 (1995-03-01), Inoue
Donnelly Jerome
Matlago John T.
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