US4001999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wood truss structure with eccentric end support
Assignee: Individual
•
Filing: 1975-10-10
•
Granted: 1977-01-11
•
Expires: 1995-10-10
Abstract
Abstract A wood truss or joist structure, including a top chord member and diagonal members joining the top chord member adjacent the ends of the latter, the top chord member having support surfaces inwardly offset from the intersection of the center lines of the top chord and diagonal members to distribute bending moments throughout the truss. All members are adhesively secured together.
Inventors
- 👤 Benson Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:47
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/12; E04C3/16
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
174 words
A structural component such as a truss or joist comprising multiple whole wood members, each with their grain arranged in the direction of its major dimension and as a group forming the outer periphery of said structural component having a top chord and spaced diagonal and vertical inner members, gusset members positioned over selected joints of some of the multiple whole wood members being joined together and said gussets being joined to the whole wood members solely by an adhesive, said diagonal members being secured to said top chord adjacent to the outer ends of said top chord the ends of the top chord having downwardly facing support surface areas for engagement by vertical support structure, said structural component having eccentric moments induced therein by having said support surfaces off-set entirely inwardly from the intersection of the center lines of said top chord and diagonal members in a precise, predetermined manner at least to significantly reduce bending stress in said diagonal members and further to distribute and minimize bending moments throughout the structural component.
Claim 2
Dependent Claim
174 words
A structural component such as a truss or joist comprising multiple whole wood members, each with their grain arranged in the direction of its major dimension and as a group forming the outer periphery of said structural component having a top chord and spaced diagonal and vertical inner members, gusset members positioned over selected joints of some of the multiple whole wood members being joined together and said gussets being joined to the whole wood members solely by an adhesive, said diagonal members being secured to said top chord adjacent to the outer ends of said top chord the ends of the top chord having downwardly facing support surface areas for engagement by vertical support structure, said structural component having eccentric moments induced therein by having said support surfaces off-set entirely inwardly from the intersection of the center lines of said top chord and diagonal members in a precise, predetermined manner at least to significantly reduce bending stress in said diagonal members and further to distribute and minimize bending moments throughout the structural component.
Claim 3
Dependent Claim
37 words
The structural component according to claim 1 together with whole wood filler blocks glued between said top chord and said diagonal members in the region adjacent their juncture to assist in distributing and minimizing the bending moments.
Claim 4
Dependent Claim
59 words
The structural component according to claim 1 wherein whole wood members are spaced apart at selected joints and the space is filled with an initially fluid filler that subsequently becomes firm yet takes the shape of the irregular surfaces and avoids any build up of concentrated compressive stresses caused by direct whole wood to whole wood limited area contact.
Claim 5
Dependent Claim
143 words
A structural component such as a truss or joist comprising multiple whole wood members forming the outer periphery of said structural component having a top chord, spaced diagonal and vertical inner members and gusset members positioned over selected joints of some of the multiple whole wood members, at least including the joints between said diagonal members and said top chord members and in a manner to effectively absorb bending force from the diagonal members and transmit said bending force to said top chord, the ends of the top chord having downwardly facing support surface areas for engagement by vertical support structure, the centerlines of said top chord and diagonal members being eccentrically arranged in a predetermined fashion whereby imaginary intersections of said top chord and diagonal member centerlines lie completely outwardly of said structural component, beyond the end limits of said top chord.
Claim 6
Dependent Claim
143 words
A structural component such as a truss or joist comprising multiple whole wood members forming the outer periphery of said structural component having a top chord, spaced diagonal and vertical inner members and gusset members positioned over selected joints of some of the multiple whole wood members, at least including the joints between said diagonal members and said top chord members and in a manner to effectively absorb bending force from the diagonal members and transmit said bending force to said top chord, the ends of the top chord having downwardly facing support surface areas for engagement by vertical support structure, the centerlines of said top chord and diagonal members being eccentrically arranged in a predetermined fashion whereby imaginary intersections of said top chord and diagonal member centerlines lie completely outwardly of said structural component, beyond the end limits of said top chord.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |