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US3914063A Expired / Lapsed US ⏱️ 0.0 years remaining

Space frame connecting fixture

Assignee: Unistrut International Corp
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Filing: 1973-05-24
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Granted: 1975-10-21
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Expires: 1993-05-24
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Abstract

Abstract A connecting fixture for a space frame system of the type wherein an upper chord frame structure, a lower chord frame structure and a web structure are formed of a plurality of strut members connected to each other and held together by a plurality of standardized connecting fixtures. The fixtures are in the form of an assembly including a base plate and a pair of intersecting vertical plates fitted together and in mating recesses in the base plate. The angular relationship between the horizontal and the diagonal struts is maintained with a close degree of accuracy.

Inventors

  • 👤 Hristo V Papayoti

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 17:45
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/19; E04B1/1903; E04B2001/1918; E04B2001/1924; E04B2001/1936; E04B2001/1957; E04B2001/1963; E04B2001/1981; E04B2001/1984; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/347; Y10T403/44

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 264 words
A connector fixture for use in a strut type space frame in which there are included a plurality of substantially horizontal chord struts and a plurality of web struts oriented in angular directions, said fixtures comprising a flat, substantially horizontal chord strut attachment base plate and a pair of upstanding, substantially right angularly disposed web strut attachment plates connected to said base plate, said pair of plates having respective cut-out portions proximate their center portions and mutually engageable one with the other, said pair of plates having formed at their lower edge a plurality of downwardly extending tab portions, said base plate further having a like plurality of apertures juxtaposed to said tab portions for receiving and holding the same in properly aligned position, and means for bonding said plates one to the other, said base plate and said pair of web strut attachment plates each having linearly arranged pairs of lugs and openings on the surfaces thereof, the lines through tHe centers of said linearly arranged pairs of lugs and openings intersecting at a common point, said lugs engageable with a mating opening in said struts and said openings in said plates mating with another opening in said struts to receive fastening means whereby said struts are mounted to said fixture such that extensions of their longitudinal axes intersect at a common point, the linear placement of said lugs and said openings formed in said web strut attachment plates all forming equal angles with respect to said base plate said angles being determined by; the desired depth of the resulting space frame structure.
Claim 2
Dependent Claim 264 words
A connector fixture for use in a strut type space frame in which there are included a plurality of substantially horizontal chord struts and a plurality of web struts oriented in angular directions, said fixtures comprising a flat, substantially horizontal chord strut attachment base plate and a pair of upstanding, substantially right angularly disposed web strut attachment plates connected to said base plate, said pair of plates having respective cut-out portions proximate their center portions and mutually engageable one with the other, said pair of plates having formed at their lower edge a plurality of downwardly extending tab portions, said base plate further having a like plurality of apertures juxtaposed to said tab portions for receiving and holding the same in properly aligned position, and means for bonding said plates one to the other, said base plate and said pair of web strut attachment plates each having linearly arranged pairs of lugs and openings on the surfaces thereof, the lines through tHe centers of said linearly arranged pairs of lugs and openings intersecting at a common point, said lugs engageable with a mating opening in said struts and said openings in said plates mating with another opening in said struts to receive fastening means whereby said struts are mounted to said fixture such that extensions of their longitudinal axes intersect at a common point, the linear placement of said lugs and said openings formed in said web strut attachment plates all forming equal angles with respect to said base plate said angles being determined by; the desired depth of the resulting space frame structure.
Claim 3
Dependent Claim 33 words
The combination as set forth in claim 1 wherein said upright plates include proximate their center portions a tapered cut-out portion to further facilitate the assembly of the parts each to the other.
Claim 4
Dependent Claim 51 words
The combination as set forth in claim 1 in which one corner portion in each of said base plates is formed differently than other corner portions for locating the sides of said pair of plates carrying said lugs and said struts in a like pattern with respect to said base plates.
Claim 5
Dependent Claim 26 words
The combination as set forth in claim 1, wherein said plates are connected one to the other by a weld applied to their respective abutting surfaces.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-10-20 1979-04-21 1979-10-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-10-20 1983-04-21 1983-10-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-10-20 1987-04-21 1987-10-21 $7700.00 Window Closed / Lapsed

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