Patent US3785108A successfully refreshed from Google Patents.
US3785108A
Expired / Lapsed
US
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Roof trusses
Assignee: DURAFRAME SYST Pty Ltd
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Filing: 1972-01-06
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Granted: 1974-01-15
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Expires: 1992-01-06
Abstract
Abstract A roof truss has two top chords and a bottom chord extending therebetween. The upper ends of the top chords are received in separate ridge sockets which are pivotally attached so as to form a ridge fitment. The lower ends of the top chords are each received in the upper socket of spaced bottom fitments, each bottom fitment also having a lower socket which respectively receive the ends of the bottom chord. The respective upper and lower sockets are arranged for pivotal movement relative to each other over a selected range of pitch angles. The respective upper and lower sockets may be maintained at any selected pitch angle within this range by inserting a bolt through any selected set of aligned holes provided therein.
Inventors
- 👤 E Satchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:27
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/02; E04B7/022; E04C; E04C3/00; E04C3/02; E04C3/04; E04C3/11; E04C2003/0486; E04C2003/0491
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
341 words
A roof truss, comprising two top chords each having an upper and a lower end portion; a bottom chord extending in a direction from one to the other of said top chords and having two end portions each of which faces a respective one of said top chords; a ridge fitment including two ridge sockets arranged for pivotal movement relative to each other, each of said ridge sockets receiving one of said upper end portions; two bottom fitments each including an upper and a lower socket arranged for pivotal movement relative to each other to a plurality of positions within a range of pitch angles, each of said upper sockets receiving one of said lower end portions, and each of said lower sockets receiving one of said end portions of said bottom chord; means for arresting the respective upper and lower sockets of each of said bottom fitments in any one of said positions within said range of pitch angles; a fitment slidably mounted on said bottom chord; a tie-rod extending in a direction from said slidable fitment towards said ridge fitment, said tie-rod having two end portions one of which is received by said ridge fitment and the other of which is received by said slidable fitment; two additional fitments each of which is slidably mounted on a respective one of said top chords; and two diagonal tie-rods one of which extends in a direction from said slidable fitment on said bottom chord to one of said additional fitments and the other of which extends in a direction from said slidable fitment on said bottom chord to the other of said additional fitments, said one diagonal tie-rod having two end portions one of which is received by said slidable fitment on said bottom chord and the other of which is received by said one additional fitment, and said other diagonal tie-rod having two end portions one of which is received by said slidable fitment on said bottom chord and the other of which is received by said other additional fitment.
Claim 2
Dependent Claim
341 words
A roof truss, comprising two top chords each having an upper and a lower end portion; a bottom chord extending in a direction from one to the other of said top chords and having two end portions each of which faces a respective one of said top chords; a ridge fitment including two ridge sockets arranged for pivotal movement relative to each other, each of said ridge sockets receiving one of said upper end portions; two bottom fitments each including an upper and a lower socket arranged for pivotal movement relative to each other to a plurality of positions within a range of pitch angles, each of said upper sockets receiving one of said lower end portions, and each of said lower sockets receiving one of said end portions of said bottom chord; means for arresting the respective upper and lower sockets of each of said bottom fitments in any one of said positions within said range of pitch angles; a fitment slidably mounted on said bottom chord; a tie-rod extending in a direction from said slidable fitment towards said ridge fitment, said tie-rod having two end portions one of which is received by said ridge fitment and the other of which is received by said slidable fitment; two additional fitments each of which is slidably mounted on a respective one of said top chords; and two diagonal tie-rods one of which extends in a direction from said slidable fitment on said bottom chord to one of said additional fitments and the other of which extends in a direction from said slidable fitment on said bottom chord to the other of said additional fitments, said one diagonal tie-rod having two end portions one of which is received by said slidable fitment on said bottom chord and the other of which is received by said one additional fitment, and said other diagonal tie-rod having two end portions one of which is received by said slidable fitment on said bottom chord and the other of which is received by said other additional fitment.
Claim 3
Dependent Claim
41 words
A roof truss as defined in claim 1, wherein all of said end portions are of channel-shaped cross-sectional configuration, and all of said sockets are of C-shaped cross-sectional configuration, said sockets being adapted to embrace respective one of said end portions.
Claim 4
Dependent Claim
31 words
A roof truss as defiNed in claim 2, wherein each of said sockets comprises at least one stop lug whereby to prevent over-insertion of the respective end portions into said sockets.
Claim 5
Dependent Claim
106 words
A roof truss as defined in claim 1, wherein portions of the respective upper and lower socket of each of said bottom fitments overlap, one of said overlapping portions being provided with at least one hole and the respective other overlapping portion being provided with a plurality of holes, said one hole being adapted to become aligned with a different one of said plurality of holes at each of said plurality of positions within said range of pitch angles, and said arresting means comprising at least one through-bolt adapted to be inserted into said one hole and one of said plurality of holes upon alignment therewith.
Claim 6
Dependent Claim
21 words
A roof truss as defined in claim 1; and further comprising an eave extension mounted on each of said bottom fitments.
Claim 7
Dependent Claim
34 words
A roof truss as defined in claim 5; further comprising facia brackets adapted to be mounted on each of said eave extensions; and mounting means adjustably mounting said facia brackets on said eave extensions.
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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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |