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US3866371A Expired / Lapsed US ⏱️ 0.0 years remaining

Structural framing system

Assignee: Midwest Housing Research Corp
•
Filing: 1973-03-07
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Granted: 1975-02-18
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Expires: 1993-03-07
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Abstract

Abstract A structural framing system for building low-cost easilyassembled enclosures comprising a connector and a beam which have a unique tongue and groove connection. The connector also has a transverse slot and an aperture. Two connectors fit together at their slots, the apertures are aligned, and a spindle part of a column is inserted through the aligned apertures to form a threedimensional joint. The beam is then connected to anyone of the ends of the connectors and in that way further beams, connectors, and columns are added so as to form the desired structural framing system.

Inventors

  • 👤 John Paul Rutherford Falconer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 17:15
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/18; E04B1/185; E04B1/26; E04B1/2604; E04B2001/2672

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 320 words
Construction means for building low-cost easily assembled structures having joints with structural continuity and stiffness comprising: at least one beam having a stepped profile in side elevation, the middle being a full height section and at least one end portion being of reduced height, a groove extending vertically through the entire height of the end portion and longitudinally from said at least one end to the beginning of said full height section, the middle portion of the full height section being full width, and there being at least one reduced width portion longitudinally extending from said full width middle portion to the reduced height end portion; and at least two connectors also having a stepped profile in side elevation, the middle being a full height section and both end portions being of reduced height, a groove extending vertically through the entire height of the end portions and longitudinally from both ends to the beginning of the full height section, a portion of the full height section being of reduced width and the remainder being full width, a transverse vertical slot extending from the level of the reduced height end portions through said reduced width portion, which slot being in the middle of the connector and having a longitudinal width equal to said full width; said two connectors being fitted transverse to each other with the slot of one fitting into the slot of the other and over the respective full width portions of the two connectors, and said beam fitting onto the end portion of one of said two connectors, the reduced width portion of the beam frictionally fitting into the groove of the one connector and the reduced width portion of the one connector fitting into the groove of the beam so as to form a longitudinal extension of the connector with the beam, thereby forming a two-dimensional joint having structural continuity through the intersection point of two connectors.
Claim 2
Dependent Claim 320 words
Construction means for building low-cost easily assembled structures having joints with structural continuity and stiffness comprising: at least one beam having a stepped profile in side elevation, the middle being a full height section and at least one end portion being of reduced height, a groove extending vertically through the entire height of the end portion and longitudinally from said at least one end to the beginning of said full height section, the middle portion of the full height section being full width, and there being at least one reduced width portion longitudinally extending from said full width middle portion to the reduced height end portion; and at least two connectors also having a stepped profile in side elevation, the middle being a full height section and both end portions being of reduced height, a groove extending vertically through the entire height of the end portions and longitudinally from both ends to the beginning of the full height section, a portion of the full height section being of reduced width and the remainder being full width, a transverse vertical slot extending from the level of the reduced height end portions through said reduced width portion, which slot being in the middle of the connector and having a longitudinal width equal to said full width; said two connectors being fitted transverse to each other with the slot of one fitting into the slot of the other and over the respective full width portions of the two connectors, and said beam fitting onto the end portion of one of said two connectors, the reduced width portion of the beam frictionally fitting into the groove of the one connector and the reduced width portion of the one connector fitting into the groove of the beam so as to form a longitudinal extension of the connector with the beam, thereby forming a two-dimensional joint having structural continuity through the intersection point of two connectors.
Claim 3
Dependent Claim 67 words
Construction means as claimed in claim 1 wherein said beam has a reduced height end portion at both ends, said groove extends vertically through the entire height of both end portions and longitudinally from both ends to the beginning of said full height section, and there are two reduced width portions each one longitudinally extending from said full width middle portion to each reduced height end portion.
Claim 4
Dependent Claim 50 words
Construction means as claimed in claim 2 wherein each connector additionally has an aperture extending vertically from said slot through the full width portion of the full height section, and when the two connectors are fitted together transverse to each other the apertures of the two fitted connectors are aligned.
Claim 5
Dependent Claim 81 words
Construction means as claimed in claim 3 in combination with an elongated column having a reduced in cross-section portion at one end, which reduced portion is fitted through said aligned apertures so that one of the connectors rests on a ledge at the transition from the reduced to the full size cross-section of the column, thereby forming a three-dimensional joint having structural continuity through the joint in all three axes, said column being positioned vertically and the transverse connectors extending horizontally.
Claim 6
Dependent Claim 34 words
Construction means as claimed in claim 4 wherein said two connectors are fitted at 90* to one another; said aligned apertures are square in cross-section; and said reduced cross-section on the column is square.
Claim 7
Dependent Claim 36 words
Contruction means as claimed in claim 1 wherein said beams and connectors are made of plywood and in the assembled condition the beams and connectors have a continuous channel running along at least one longitudinal edge.
Claim 8
Dependent Claim 31 words
Construction means as claimed in claim 4 including at least four columns, eight connectors and four beams connected so as to form a three-dimensional encloseable framework for a low-cost building structure.

References Cited (Backward Citations)

US198926A Cited
US305584A Cited
US797640A Cited
US1189360A Cited
US2010874A Cited
US2712199A Cited
US3206903A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-02-17 1978-08-19 1979-02-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-02-17 1982-08-19 1983-02-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-02-17 1986-08-19 1987-02-18 $7700.00 Window Closed / Lapsed

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