Title: Structural space element

Abstract: Disclosed is a structural space element, which consists of a tube. The tube has on its outer surface joining collars transversal to the element, which extend around the tube. Every second of the joining collars has a larger circumference than the adjacent joining collars. The collars are joinable to smaller-circumference joining collars of other, respective space elements and vice versa so that spaces for conduits etc. are created between the elements. The collars of one element joined to the collars of the other elements form together a beam-pillar-ring system of the total structure, in which said elements are cogged crosswise to each other.

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Inventors: Haapala, Jalo P. (00100 Helsinki 10, SF)

Application Number: 557553
Filing Date: 1975-03-12
Publication_date: 1976-09-28
Assignee:
Primary Class(es): 52/220.2 52/79.14, 52/79.9, 138/117, 264/309
Other Classes:
US Patent Ref:

1058674	Apr, 1913	Kertes	52/593.
3086629	Apr, 1963	Blitzer	138/117.
3457698	Jul, 1969	Albers	52/220.
3468081	Sep, 1969	Saarinen	52/236.
3514910	Jun, 1970	Comm	52/228.
3550334	Dec, 1970	Van Der Lely	52/228.
3693664	Sep, 1972	Schmunk	138/121.
3750366	Aug, 1973	Rich et al.	52/79.
3751864	Aug, 1973	Berger	52/79.
3778528	Dec, 1973	Heifetz et al.	52/79.
3793428	Feb, 1974	Gordon	264/309.

Other Refs: 1,518,637

Feb, 1968	FR

Primary Examiner: Ridgill, Jr., James L.
Assistant Examiner:
Attorney: Jordan; Frank J.