Patent US4336678A successfully refreshed from Google Patents.
US4336678A
Expired / Lapsed
US
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I-Beam truss structure
Assignee: Individual
•
Filing: 1979-07-26
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Granted: 1982-06-29
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Expires: 1999-07-26
Abstract
Abstract A wooden truss structure comprises upper and lower chords, each of which is grooved on the side facing the opposite chord. A web member formed of sheet material, such as plywood, interconnects the chords and fits within the chord grooves. At the web/groove interface, the webs are scalloped to provide alternating alignment guide areas and glue vent areas which extend above the interface and allow the escape of excess glue from the groove. The scalloping, in addition to venting the glue line, forms individual, pressurized glue pockets which assure even glue distribution. The scalloping is preferably provided by pressing the wood web material to compress it at the glue vent areas and thus permit the web member, due to its memory, to expand after contact with the glue. This expansion pressurizes the glue pockets and forces glue from the joint area into the wood further enhancing the expansion process. The web is rigidly bonded to the chord members, all while being aligned by the alignment guide portion. This scalloping is effected along the lateral walls of the web at right angles to the longitudinal dimension of the web and consists of compressing the wood so that the impressions are deeper at their bottom than at their top.
Inventors
- 👤 Dierk D. Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:59
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/12; E04C3/14; B; B27; B27M; B27M3/00; B27M3/0013; B27M3/0086; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/473
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
116 words
A web-type wooden truss comprising: a pair of spaced wooden chords each including a straight groove facing and in registration with the groove of the other chord, said grooves containing glue; and a web member having opposite edges fitting within said chord grooves, said edges having undulating cross-sections in a direction parallel to the length of said grooves to provide, in cooperation with said grooves, individual glue dispersion pockets which evenly distribute the glue in the web/chord interface, said edge cross-sections undulating between a more acutely tapered edge having a more acute taper than the taper of said grooves and a less acutely tapered edge having a less acute taper than the taper of said grooves.
Claim 2
Dependent Claim
116 words
A web-type wooden truss comprising: a pair of spaced wooden chords each including a straight groove facing and in registration with the groove of the other chord, said grooves containing glue; and a web member having opposite edges fitting within said chord grooves, said edges having undulating cross-sections in a direction parallel to the length of said grooves to provide, in cooperation with said grooves, individual glue dispersion pockets which evenly distribute the glue in the web/chord interface, said edge cross-sections undulating between a more acutely tapered edge having a more acute taper than the taper of said grooves and a less acutely tapered edge having a less acute taper than the taper of said grooves.
Claim 3
Dependent Claim
45 words
A web-type wooden truss, as defined in claim 1, wherein said pockets are deeper adjacent the bottom of said groove than at the top of said groove, said pockets above said grooves to allow excess glue to escape to a location not under interface pressure.
Claim 4
Dependent Claim
60 words
A web type wooden truss, comprising: a pair of spaced chords each having a groove which faces the groove of the other chord; and a web having opposite edges fitting within said grooves, each said edge having opposite sides parallel to said grooves and a bottom, said sides having plural, interlocking dimples which are deeper as they approach said bottom.
Claim 5
Dependent Claim
60 words
A web type wooden truss, comprising: a pair of spaced chords each having a groove which faces the groove of the other chord; and a web having opposite edges fitting within said grooves, each said edge having opposite sides parallel to said grooves and a bottom, said sides having plural, interlocking dimples which are deeper as they approach said bottom.
Claim 6
Dependent Claim
104 words
A web-type wooden truss comprising: a pair of chords spaced apart from one another, each chord having a tapered groove facing and aligned with the groove of the other chord, said grooves containing glue; a web extending between said chords and having opposite edges inserted into said grooves; pockets compressed on each side of said edges for distributing said glue over the edge/groove interface, said pockets increasing in depth toward said edges of said web and toward the pocket center to uniformly distribute said glue in said interface, said pockets providing a tapered edge which is more acute than the taper of said grooves.
Claim 7
Dependent Claim
104 words
A web-type wooden truss comprising: a pair of chords spaced apart from one another, each chord having a tapered groove facing and aligned with the groove of the other chord, said grooves containing glue; a web extending between said chords and having opposite edges inserted into said grooves; pockets compressed on each side of said edges for distributing said glue over the edge/groove interface, said pockets increasing in depth toward said edges of said web and toward the pocket center to uniformly distribute said glue in said interface, said pockets providing a tapered edge which is more acute than the taper of said grooves.
Claim 8
Dependent Claim
22 words
The wooden truss of claim 4 wherein said pockets are wider adjacent said web edge than at the top of said groove.
Claim 9
Dependent Claim
14 words
The wooden truss of claim 4 wherein said pockets are separated by less-compressed areas.
Claim 10
Dependent Claim
10 words
The wooden truss of claim 6 wherein said pockets overlap.
Claim 11
Dependent Claim
103 words
A web-type wooden truss comprising: a pair of chords spaced apart from one another, each chord having a tapered groove facing and aligned with the groove of the other chord, said grooves containing glue; a web extending between said chords and having opposite edges inserted into said grooves; and pockets compressed on the sides of said edges for distributing said glue, said pockets being compressed more at said web edges than at the top of said grooves to form a taper which is more acute than the taper of said grooves to provide means for confining glue for interaction with the web edge.
Claim 12
Dependent Claim
103 words
A web-type wooden truss comprising: a pair of chords spaced apart from one another, each chord having a tapered groove facing and aligned with the groove of the other chord, said grooves containing glue; a web extending between said chords and having opposite edges inserted into said grooves; and pockets compressed on the sides of said edges for distributing said glue, said pockets being compressed more at said web edges than at the top of said grooves to form a taper which is more acute than the taper of said grooves to provide means for confining glue for interaction with the web edge.
Claim 13
Dependent Claim
105 words
A web-type wooden truss comprising: a pair of chords spaced apart from one another, each chord having a groove facing and aligned with the groove of the other chord, said grooves containing glue; a web extending between said chords and having opposite edges inserted into said grooves to form an interface between the sides of said edges and the sides of said grooves; and compressions in said interface forming glue dispersion pockets, said pockets being compressed more adjacent the bottom of said grooves than at the top of said grooves to form a tapered pocket which is more acute than the taper of said interface.
Claim 14
Dependent Claim
105 words
A web-type wooden truss comprising: a pair of chords spaced apart from one another, each chord having a groove facing and aligned with the groove of the other chord, said grooves containing glue; a web extending between said chords and having opposite edges inserted into said grooves to form an interface between the sides of said edges and the sides of said grooves; and compressions in said interface forming glue dispersion pockets, said pockets being compressed more adjacent the bottom of said grooves than at the top of said grooves to form a tapered pocket which is more acute than the taper of said interface.
Claim 15
Dependent Claim
58 words
A web-type wooden truss as defined in claim 9, additionally; said pockets overlap at the bottom of said groove to permit the distribution of glue in a direction parallel to the length of said grooves, said pockets separated at the top of said groove by non-compressed areas to hold said web in said groove while said glue dries.
Claim 16
Dependent Claim
26 words
The wooden truss of claim 9 wherein said pockets extend above the top of said grooves to provide means for venting excess glue from said interface.
Claim 17
Dependent Claim
24 words
The wooden truss of claim 11 wherein said venting means is sealed by said excess glue when dried to permit pressurization of said pocket.
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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) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |