Undertaking
Patent
1985-01-08
1988-01-26
Murtagh, John E.
Undertaking
523099, 52646, 285138, 285390, 446124, 138149, A63B 900, A63B 1700
Patent
active
047212993
ABSTRACT:
The structural member, such as a pipe has a pipe wall, whose inner and outer surfaces are formed by plastic surface layers. Between the surface layers is provided a space, which is filled with a material differing from that of the surface layers. If the structural member is used as a foundation part of a structure, the space is filled with a material or a non-porous plastic for increasing the strength and stability of the pipe, while for other, that is overlying structural members, the space is filled with a lower density material, such as PUR (Polyurethane) foam, or is in the form of a cavity. Thus, the foundation parts are not subject to unnecessarily high loading and material is saved. Playing and gymnastic structures with a random spatial arrangement can be formed from the structural members.
REFERENCES:
patent: 1218895 (1917-03-01), Porter
patent: 1267835 (1918-05-01), Zwicker
patent: 1441908 (1923-01-01), Billie
patent: 1731171 (1929-10-01), Miller
patent: 2133376 (1938-10-01), Brown
patent: 3013584 (1961-12-01), Reed
patent: 3295281 (1967-01-01), Dixon
patent: 3593480 (1969-07-01), Bouchillion
patent: 3813115 (1974-05-01), French
patent: 3878661 (1975-04-01), Moore
patent: 3895796 (1975-07-01), Pestalozzi
patent: 4025091 (1977-05-01), Zeile
patent: 4273161 (1981-06-01), McLaughlin
patent: 4428591 (1984-01-01), Marissen
patent: 4462618 (1984-07-01), Stone
patent: 4475749 (1984-10-01), Pforr
patent: 4478253 (1984-10-01), Everett
patent: 4560012 (1985-12-01), McNeely
Ludopark AG.
Murtagh John E.
LandOfFree
Structure assembled from structural members does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Structure assembled from structural members, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structure assembled from structural members will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1465048