US3841195A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-sided fastener
Assignee: Gang Nail Systems Inc
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Filing: 1973-05-15
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Granted: 1974-10-15
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Expires: 1993-05-15
Abstract
Abstract A novel method and apparatus is disclosed for the joining of two wooden structural members in which a connector plate assembly having teeth projecting from opposite sides thereof is placed between the members to be joined and the members forced thereon. The connector assembly includes back-to-back connector plates which are welded prior to assembly. The teeth projecting from either side of the assembly are arranged in longitudinal rows with selected teeth having scarfed tips for providing a clinching action. Other teeth are provided with chisel-pointed tips for resistance to shear. The rows of teeth are staggered and carry angled shoulder portions which provide the shank of each tooth with a widened base. Because of the staggering the slot left by each shoulder portion is adjacent the metal between adjacent teeth in an adjacent row thereby increasing the effective net section of the plates. The slots in the connector plates left when the teeth are struck from the plate are misaligned when the plates are welded together for permitting welding of the two plates together by the introduction of weldment into the slots. Selected teeth are made shorter than the remaining teeth to permit joint formation with reduced pressure.
Inventors
- 👤 J Jureit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:15
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/0023; F16B15/003; F16B15/0046; F16B2015/0061; F16B2015/0069; Y; Y10; Y10S; Y10S411/00; Y10S411/921; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49833
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
67 words
A hidden fastener comprising: two metallic plates, each of said plates having rows of teeth struck therefrom and depending outwardly from the plate, said teeth being at longitudinally spaced positions along the plate with slots left by the striking of said teeth extending away from the base of said teeth, said plates being bonded together in back-to-back relation with teeth extending from said plates in opposite directions.
Claim 2
Dependent Claim
67 words
A hidden fastener comprising: two metallic plates, each of said plates having rows of teeth struck therefrom and depending outwardly from the plate, said teeth being at longitudinally spaced positions along the plate with slots left by the striking of said teeth extending away from the base of said teeth, said plates being bonded together in back-to-back relation with teeth extending from said plates in opposite directions.
Claim 3
Dependent Claim
72 words
The hidden fastener according to claim 1 wherein the slots in one of said plates is misaligned with the slots in the other of said plates thereby to expose metal in one plate through slots in the other plate; and further including material coacting with the material surrounding a slot in one plate and with the metal of the other plate exposed in said slot for securing one plate to the other.
Claim 4
Dependent Claim
19 words
The hidden fastener according to claim 2, wherein said plates are welded together and wherein said material is weldment.
Claim 5
Dependent Claim
61 words
The hidden fastener according to claim 1 wherein all of said teeth include a shoulder portion at the base thereof, wherein selected teeth include scarfed points and selected teeth include chisel points, teeth in adjacent rows being staggered such that the slots left by said shoulders in one row of teeth lie adjacent metal between adjacent teeth in an adjacent row.
Claim 6
Dependent Claim
161 words
A connector assembly comprising: back-to-back welded metal plates, each of said plates having rows of teeth struck therefrom and depending outwardly from each plate, selected teeth having scarfed tips, the remainder having chisel-pointed tips, said teeth being at longitudinally spaced positions along each plate with slots left by the striking of said teeth extending away from the base of said teeth, the slots in one plate being misaligned with the slots in the other plate such that metal from one plate is exposed in the slots of the other plate, said plates being welded together by the introduction of weldment in selected slots such that said plates are secured together in back-to-back relationship with teeth extending from said plates in opposite directions, each of said teeth having a widened base portion, said teeth being staggered such that the enlarged slot portions left by the striking of the widened base portions lie adjacent the metal between adjacent teeth in an adjacent row.
Claim 7
Dependent Claim
161 words
A connector assembly comprising: back-to-back welded metal plates, each of said plates having rows of teeth struck therefrom and depending outwardly from each plate, selected teeth having scarfed tips, the remainder having chisel-pointed tips, said teeth being at longitudinally spaced positions along each plate with slots left by the striking of said teeth extending away from the base of said teeth, the slots in one plate being misaligned with the slots in the other plate such that metal from one plate is exposed in the slots of the other plate, said plates being welded together by the introduction of weldment in selected slots such that said plates are secured together in back-to-back relationship with teeth extending from said plates in opposite directions, each of said teeth having a widened base portion, said teeth being staggered such that the enlarged slot portions left by the striking of the widened base portions lie adjacent the metal between adjacent teeth in an adjacent row.
Claim 8
Dependent Claim
56 words
The connector assembly according to claim 5 wherein said teeth are arranged in repeating rows of four, the outermost rows having scarf-pointed teeth arranged such that when said teeth are embedded in a wooden structural member, the embedment forces the teeth in outside rows together, thereby to provide a clinching action to prevent against tooth withdrawal.
Claim 9
Dependent Claim
22 words
The connector assembly according to claim 5 wherein said widened base portions include a shoulder portion to one side of each tooth.
Claim 10
Dependent Claim
23 words
The connector assembly according to claim 7 wherein said shoulder portion includes a flat portion parallel to one edge of its corresponding tooth.
Claim 11
Dependent Claim
12 words
The connector assembly according to claim 7 wherein said shoulders are radiused.
Claim 12
Dependent Claim
16 words
The connector assembly according to claim 5 wherein each of said teeth has a V-shaped cross-section.
Claim 13
Dependent Claim
17 words
The connector assembly according to claim 5 wherein each of said teeth has a wagon track cross-section.
Claim 14
Dependent Claim
20 words
The connector assembly according to claim 5 wherein the tips of each tooth are provided with a concave cutting surface.
Claim 15
Dependent Claim
24 words
The connector assembly according to claim 5 wherein selected teeth are shorter than the remaining teeth thereby to permit joint formation with reduced pressures.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |