US3857218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Truss joists having edge pin connectors
Assignee: Simpson Strong Tie Co Inc
•
Filing: 1973-07-18
•
Granted: 1974-12-31
•
Expires: 1993-07-18
Abstract
Abstract A truss joist having wood chords, connectors mounted on said chords, sheet metal and a plurality of metal strut members arranged diagonally between said chords joined to said connectors by metal pins which are partially embedded in transverse semicircular channels cut in the inner faces of the chords.
Inventors
- 👤 T Gilb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:59
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/02; E04C3/29; E04C3/292
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
307 words
A truss joist comprising: a. upper and lower wood chords, each having flat inner and outer faces and said chords having a width greater than their depth; b. a plurality of sheet metal connectors mounted on said chords; c. a plurality of strut members having openings formed in their ends and extending between said chords; d. a plurality of pins mounted transversely of said chords pivotally securing the ends of said struts at the midpoint of said pins to said connectors wherein the pivot points are located at said inner faces of each of said chords; e. said chords being formed with transverse semi-circular grooves having a depth approximately one-half the diameter of said pin for receiving said partially embedded pins; f. said chords being formed with slots joining said inner and outer faces at the approximate center lines of said chords; g. each of said connectors including a pair of seats engaging the outside faces of said chords, each connector having a pair of legs disposed in close fitting relation to the outside edges of said chords and connecting said seats and opposite ends of said pin and each of said connectors having an arm mounted in said slot connecting said seats and the mid portion of said pin; h. said seats and legs of said connector and pin completely encapsulating said chords at their inner and outer faces and edges; i. said connector arm being formed with an edge flange extending a substantial portion therealong and extending transversely of said chord for close fitting engagement therewith for transmitting forces from said strut members to the mid portions of said chords; and j. said chords being formed with channels extending from their outer faces toward their inner faces at the approximate center line of said chords for force fit receipt of said flange of said connector.
Claim 2
Dependent Claim
307 words
A truss joist comprising: a. upper and lower wood chords, each having flat inner and outer faces and said chords having a width greater than their depth; b. a plurality of sheet metal connectors mounted on said chords; c. a plurality of strut members having openings formed in their ends and extending between said chords; d. a plurality of pins mounted transversely of said chords pivotally securing the ends of said struts at the midpoint of said pins to said connectors wherein the pivot points are located at said inner faces of each of said chords; e. said chords being formed with transverse semi-circular grooves having a depth approximately one-half the diameter of said pin for receiving said partially embedded pins; f. said chords being formed with slots joining said inner and outer faces at the approximate center lines of said chords; g. each of said connectors including a pair of seats engaging the outside faces of said chords, each connector having a pair of legs disposed in close fitting relation to the outside edges of said chords and connecting said seats and opposite ends of said pin and each of said connectors having an arm mounted in said slot connecting said seats and the mid portion of said pin; h. said seats and legs of said connector and pin completely encapsulating said chords at their inner and outer faces and edges; i. said connector arm being formed with an edge flange extending a substantial portion therealong and extending transversely of said chord for close fitting engagement therewith for transmitting forces from said strut members to the mid portions of said chords; and j. said chords being formed with channels extending from their outer faces toward their inner faces at the approximate center line of said chords for force fit receipt of said flange of said connector.
Claim 3
Dependent Claim
76 words
A truss joist as described in claim 1 comprising: a. said sheet metal connectors comprising a pair of U-shaped members, each having a seat, an upstanding leg formed with an opening for receipt of said pin, an upstanding arm formed with an opening for receipt of said pin and said arms having at least one edge formed with a flange extending a substantial portion therealong and extending transversely of said chord for close fitting engagement therewith.
Claim 4
Dependent Claim
38 words
A truss joist as described in claim 2 comprising: a. the leading and trailing edges of said arms being formed with flanges extending a substantial portion thereof and extending transversely of said chord for close fitting engagement therewith.
Claim 5
Dependent Claim
42 words
A truss joist as described in claim 1 comprising: a. a cutting tooth formed in leading relationship to each of said flanges for forming a channel in said chord upon being driven into said chord for force fitting occupany by said flange.
Claim 6
Dependent Claim
34 words
A truss joist as described in claim 1 comprising: a. said arms and said legs being angularly related to the plane of said seat offsetting said pin from the center line of said seat.
Claim 7
Dependent Claim
28 words
A truss joist as described in claim 5 comprising: a. said angle formed between said arms and legs of said connector with said connector seat being about 30*.
Claim 8
Dependent Claim
75 words
A truss joist as described in claim 1 comprising: a. a short wood bearing member having substantially the same width and thickness of said upper chord and being similarly slotted and placed beneath the end of said upper chord; b. a second set of said connectors each including a pair of Ushaped members having a seat engaging the outside face of said wood bearing member and said arms and legs connecting said seat and pin.
Claim 9
Dependent Claim
71 words
A truss joist as described in claim 1 comprising: a. a second upper and lower wood chords dispOsed in side by side relationship with said upper and lower wood chords; b. a plurality of second connectors mounted on said second chords; c. a plurality of second strut members arranged diagonally between said second chords; d. an elongated pin pivotally securing the ends of both sets of said struts to said connectors.
Claim 10
Dependent Claim
172 words
A truss joist comprising: a. upper and lower wood chords; b. a plurality of metal connectors mounted on said chords; c. a plurality of strut members arranged diagonally between said chords; d. means pivotally securing the ends of said struts to said connectors wherein the pivot points are located inwardly of the center lines of each of said chords; e. said means includes a pin mounted transversely of said chords and partially outside the inner surfaces of said chords; f. said chords being formed with a transverse groove for receiving said partially embedded pins. g. said connectors include a seat engaging the outside face of said chords and a pair of legs connecting said seat and said pins and a retaining arm disposed from said legs connecting said seat and said pins; and h. said chords having a width greater than the width of said connectors and being formed with recesses for receiving the ends of said struts, slots for receiving said retaining arms, and end recesses for receiving said connector legs.
Claim 11
Dependent Claim
172 words
A truss joist comprising: a. upper and lower wood chords; b. a plurality of metal connectors mounted on said chords; c. a plurality of strut members arranged diagonally between said chords; d. means pivotally securing the ends of said struts to said connectors wherein the pivot points are located inwardly of the center lines of each of said chords; e. said means includes a pin mounted transversely of said chords and partially outside the inner surfaces of said chords; f. said chords being formed with a transverse groove for receiving said partially embedded pins. g. said connectors include a seat engaging the outside face of said chords and a pair of legs connecting said seat and said pins and a retaining arm disposed from said legs connecting said seat and said pins; and h. said chords having a width greater than the width of said connectors and being formed with recesses for receiving the ends of said struts, slots for receiving said retaining arms, and end recesses for receiving said connector legs.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |