Patent US3633454A successfully refreshed from Google Patents.
US3633454A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector plate
Assignee: ITW TRUSWAL Corp A CORP OF
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Filing: 1970-03-02
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Granted: 1972-01-11
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Expires: 1990-03-02
Abstract
Abstract A connector plate, for connecting abutting wood members, formed of a sheet having numerous punched-out, narrow, elongated openings, with the punched-out material forming integral, identical mirror-image teeth at each end of their respective openings. The ends of the teeth are cut diagonally. The half of each tooth adjacent to the sheet is formed with a convex outer surface and V-shaped inner surface, and the free half of each tooth is formed generally flattened and gradually twisted around an axis perpendicular to the sheet so that its free diagonal edge is at a roughly 45* angle relative to the long edges of its respective opening.
Inventors
- 👤 Jack N Schmitt
- 👤 Paul E Hodges Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:57
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/0023; F16B15/003; F16B15/0046; Y; Y10; Y10S; Y10S411/00; Y10S411/921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
335 words
In a connector plate, for connecting together abutting pieces of wood, and comprising a thin, rigid, metal sheet having a number of identical punched openings formed therein, each opening being narrow and elongated, with the sheet material bent upward from each such opening to form a pair of identical but mirror image teeth, each integral with one end of said opening and extending perpendicular to said sheet, with each tooth having an innerface, facing towards the opposite tooth of its pair, and an opposite outer face, the improvement comprising: each tooth having its free end formed at an acute angle relative to the sheet, with one side edge of the tooth being longer than the other; each tooth being divided along its length into two integral half portions, namely an lower half portion located adjacent to the sheet and an upper half portion located adjacent its free end, with the lower portion having its outer face formed convex in cross section; but extending perpendicularly to the sheet; and the upper portion being generally flattened and rotated about an axis perpendicular to the sheet to gradually increase in angularity relative to the lower portion, to the point where the free end of the tooth is arranged at a roughly 45* angle relative to the long edges of its respective opening, and the free tip of the long edge is located closer towards the opposite tooth than is the tip of the shorter edge; with such shorter edge being bowed rearwardly near its tip; said lower portion of the tooth inner face having a sharp crease line formed therein approximately midway between said two side edges of the tooth, to form said V-shape, with the crease extending about halfway towards said tooth''s free end from the tooth''s integral end and the crease then continuing at an angle to intersect with the tooth''s shorter side edge near the tip of the shorter side edge, and the tooth''s area between the crease and the shorter side edge being untwisted.
Claim 2
Dependent Claim
335 words
In a connector plate, for connecting together abutting pieces of wood, and comprising a thin, rigid, metal sheet having a number of identical punched openings formed therein, each opening being narrow and elongated, with the sheet material bent upward from each such opening to form a pair of identical but mirror image teeth, each integral with one end of said opening and extending perpendicular to said sheet, with each tooth having an innerface, facing towards the opposite tooth of its pair, and an opposite outer face, the improvement comprising: each tooth having its free end formed at an acute angle relative to the sheet, with one side edge of the tooth being longer than the other; each tooth being divided along its length into two integral half portions, namely an lower half portion located adjacent to the sheet and an upper half portion located adjacent its free end, with the lower portion having its outer face formed convex in cross section; but extending perpendicularly to the sheet; and the upper portion being generally flattened and rotated about an axis perpendicular to the sheet to gradually increase in angularity relative to the lower portion, to the point where the free end of the tooth is arranged at a roughly 45* angle relative to the long edges of its respective opening, and the free tip of the long edge is located closer towards the opposite tooth than is the tip of the shorter edge; with such shorter edge being bowed rearwardly near its tip; said lower portion of the tooth inner face having a sharp crease line formed therein approximately midway between said two side edges of the tooth, to form said V-shape, with the crease extending about halfway towards said tooth''s free end from the tooth''s integral end and the crease then continuing at an angle to intersect with the tooth''s shorter side edge near the tip of the shorter side edge, and the tooth''s area between the crease and the shorter side edge being untwisted.
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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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |