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Patent US3673671A successfully refreshed from Google Patents.
US3673671A
Expired / Lapsed
US
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Method of fabricating wood trusses
Assignee: P H BOWMAN CO Inc
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Filing: 1969-11-14
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Granted: 1972-07-04
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Expires: 1989-11-14
Abstract
Abstract After the coplanar structural members of the truss assembly are arranged in end-adjacent array to form the necessary joints, a pair of toothed truss plates or the like is loosely applied to the sides of each joint; and a secondary fastener such as a clinch nail is impaled through the body of each member at each joint, and through the plates thereadjacent, so as to partially interlock the plates with the members in the plane of the assembly. So interlocked at the joints, the assembly is then passed in planar fashion through a roller press or the like, to flatten the plates against the sides of the joints, and to impale the teeth on the plates into the bodies of the structural members.
Inventors
- 👤 George R Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:58
CPC Classifications
B; B27; B27F; B27F7/00; B27F7/02; B27F7/04; B27F7/15; B27F7/155; A; A61; A61B; A61B17/00; A61B17/068; A61B17/072; A61B2017/07214; A61B2017/07257; A61B2017/07264; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833; Y10T29/49835; Y10T29/49837
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
A method of fAbricating a truss from coplanar structural members of wood or the like which are arranged in end-adjacent array with one another at a plurality of joints therebetween, comprising applying a pair of plates to the sides of each joint which have primary impalement fasteners raised on the applied faces thereof, temporarily coupling each joint by impaling a secondary fastener through the body of each structural member at each joint, and engaging each such secondary fastener with each of the plates adjacent said structural member, to partially interlock the plates with the members in and crosswise of the plane of the assembly, and thereafter moving the assembly and a press in relation to one another so as to flatten the plates against the sides of the joints, and to impale the raised fasteners on the plates into the bodies of the members to permanently couple the respective joints therebetween.
Claim 2
Independent Claim
151 words
A method of fAbricating a truss from coplanar structural members of wood or the like which are arranged in end-adjacent array with one another at a plurality of joints therebetween, comprising applying a pair of plates to the sides of each joint which have primary impalement fasteners raised on the applied faces thereof, temporarily coupling each joint by impaling a secondary fastener through the body of each structural member at each joint, and engaging each such secondary fastener with each of the plates adjacent said structural member, to partially interlock the plates with the members in and crosswise of the plane of the assembly, and thereafter moving the assembly and a press in relation to one another so as to flatten the plates against the sides of the joints, and to impale the raised fasteners on the plates into the bodies of the members to permanently couple the respective joints therebetween.
Claim 3
Dependent Claim
28 words
The method according to claim 1 wherein the array of members is maintained in the same relative earthly orientation while the secondary fasteners are engaged with the plates.
Claim 4
Dependent Claim
57 words
The method according to claim 1 wherein each secondary fastener is engaged with the plates adjacent the respective structural member, by impaling the same through and beyond the assembled plates and member while the assembly is abutted against a recessed backup surface adapted to deflect the tip of the secondary fastener as it extends beyond the assembly.
Claim 5
Dependent Claim
39 words
The method according to claim 3 wherein the secondary fastener is impaled through the assembly from one side of the respective joint, while the plate on the other side of the joint is abutted directly against the backup surface.
Claim 6
Dependent Claim
30 words
The method according to claim 1 wherein each secondary fastener is impaled through the plates adjacent the respective structural member, and bodily deformed to engage the same with the plates.
Claim 7
Dependent Claim
48 words
The method according to claim 5 wherein the secondary fasteners have heads thereon and are adapted to project beyond the opposite side of the assembly from which they are impaled, and the projecting tips of the headed fasteners are clinched against the assembly on the latter side thereof.
Claim 8
Dependent Claim
52 words
The method according to claim 6 wherein the projecting tips of the fasteners are clinched against the assembly simultaneously with the impalement thereof by applying the assembly against a recessed backup surface during the impalement operation, the recess of which is adapted to deflect the tips of the fasteners as they project.
Claim 9
Dependent Claim
17 words
The method according to claim 7 wherein the secondary fasteners take the form of headed clinch nails.
Claim 10
Dependent Claim
25 words
The method according to claim 1 wherein the plates are flattened against the sides of the joints by passing the assembly through a roller press.
Claim 11
Dependent Claim
27 words
The method according to claim 1 wherein the plates have punched holes therein, the material from which forms the raised impalement fasteners on the applied faces thereof.
Claim 12
Dependent Claim
147 words
In the process of coupling together a pair of coplanar structural members of wood or the like which are arranged to form a joint therebetween, the steps of applying a pair of plates to the sides of the joint which have primary impalement fasteners raised on the inside faces thereof, temporarily coupling the joint by impaling a secondary fastener through the body of each structural member, and through each plate adjacent said structural member, interengaging the secondary fasteners with the plates on the outside faces thereof, and clinching the plates against the members to partially interlock the plates with the members in and crosswise of the plane of the assembly, and thereafter moving the assembly in relation to a press, so as to flatten the plates against the sides of the joint and to impale the raised fasteners or the plates into the bodies of the members.
Claim 13
Dependent Claim
147 words
In the process of coupling together a pair of coplanar structural members of wood or the like which are arranged to form a joint therebetween, the steps of applying a pair of plates to the sides of the joint which have primary impalement fasteners raised on the inside faces thereof, temporarily coupling the joint by impaling a secondary fastener through the body of each structural member, and through each plate adjacent said structural member, interengaging the secondary fasteners with the plates on the outside faces thereof, and clinching the plates against the members to partially interlock the plates with the members in and crosswise of the plane of the assembly, and thereafter moving the assembly in relation to a press, so as to flatten the plates against the sides of the joint and to impale the raised fasteners or the plates into the bodies of the members.
Claim 14
Dependent Claim
63 words
The process according to claim 11 wherein the secondary fasteners are impaled through the members and plates and simultaneously clinched against the outside faces of the plates by employing headed, extra length secondary fasteners and applying the assembly against a recessed backup surface during the impalement operation, the recess of which is adapted to deflect the tips of the fasteners as they project.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |