Patent US4493582A successfully refreshed from Google Patents.
US4493582A
Expired / Lapsed
US
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Tenon joint for wooden frames
Assignee: Individual
•
Filing: 1984-01-27
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Granted: 1985-01-15
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Expires: 2004-01-27
Abstract
Abstract A multiple tenon joint for wooden frames in particular for solid wood strut constructions such as are usual in tables, chairs and furniture frames. Owing to the generally small dimensioning of wooden components, the known joint constructions are not sufficiently stable. This problem is solved by the use of machined square multiple tenons which are pressed into round cylindrical multiple bores and are glued, the glue flowing back in open segments between the tenon and bore walls. The bores are smaller in diameter than the diagonal dimension of the tenons.
Inventors
- 👤 Karl S. Drabsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:14
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/04; F16B2012/046; Y; Y10; Y10T; Y10T403/00; Y10T403/47; Y10T403/472; Y10T403/49; Y10T403/4966; Y10T403/55; Y10T403/559
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
100 words
Joint construction comprising a first component having a plurality of rows of tenons of rectangular cross-section, each row including a plurality of tenons, and a second component having a plurality of bores of circular cross-section in which respective tenons of the first part are glued, wherein each side length of the cross-section of each tenon is less than the diameter of the associated bore, each diagonal of said tenon cross-section is greater than said diameter, and four gaps of sequentially-shaped cross-section between the edge surfaces of each tenon and the wall of the associated bore are substantially filled with glue.
Claim 2
Dependent Claim
100 words
Joint construction comprising a first component having a plurality of rows of tenons of rectangular cross-section, each row including a plurality of tenons, and a second component having a plurality of bores of circular cross-section in which respective tenons of the first part are glued, wherein each side length of the cross-section of each tenon is less than the diameter of the associated bore, each diagonal of said tenon cross-section is greater than said diameter, and four gaps of sequentially-shaped cross-section between the edge surfaces of each tenon and the wall of the associated bore are substantially filled with glue.
Claim 3
Dependent Claim
12 words
Joint construction according to claim 1 wherein said cross-section is substantially square.
Claim 4
Dependent Claim
33 words
Joint construction according to claim 1 wherein said second wooden component is provided with two sets of bores on respective faces for receiving tenons of said first component and a third component respectively.
Claim 5
Dependent Claim
21 words
Joint construction according to claim 3 wherein the bores on one face are offset relative to those on the other face.
Claim 6
Dependent Claim
15 words
Joint construction according to claim 1 wherein said first and second components are of wood.
Claim 7
Dependent Claim
11 words
Joint construction according to claim 1 wherein each bore is countersunk.
Claim 8
Dependent Claim
16 words
Joint construction according to claim 1 wherein the tenons and bores are at least partially conical.
Claim 9
Dependent Claim
118 words
Method of manufacturing a joint construction in which a plurality of rows of rectangular cross-section tenons are formed on a first component, each row including a plurality of said tenons, and a plurality of bores of circular cross-section are formed in a second component at positions to correspond with said tenons, the diameter of each bore being greater than each side length of the associated tenon cross-section and less than the diameter of the associated tenon cross-section; glue is applied within said bores; and the tenons are pressed into respective bores, whereby glue is caused to flow back in order substantially to fill segmentally-shaped gaps between the surfaces of the tenons and the inner walls of respective bores.
Claim 10
Dependent Claim
118 words
Method of manufacturing a joint construction in which a plurality of rows of rectangular cross-section tenons are formed on a first component, each row including a plurality of said tenons, and a plurality of bores of circular cross-section are formed in a second component at positions to correspond with said tenons, the diameter of each bore being greater than each side length of the associated tenon cross-section and less than the diameter of the associated tenon cross-section; glue is applied within said bores; and the tenons are pressed into respective bores, whereby glue is caused to flow back in order substantially to fill segmentally-shaped gaps between the surfaces of the tenons and the inner walls of respective bores.
Claim 11
Dependent Claim
14 words
A joint construction which has been manufactured according to the method of claim 8.
Claim 12
Dependent Claim
14 words
An article of furniture including at least one joint construction according to claim 1.
Claim 13
Dependent Claim
105 words
Tenon joint for two parts of a wooden frme, for example solid wood strut constructions such as tables, chairs and furniture frames, having a plurality of rows of machined tenons on the first part, each row including a plurality of said tenons, and cylindrical bores in the second part into which the tenons are pressed and glued, characterised in that the tenons have in substance a square cross-section and the length of each diagonal of the square cross-section is larger than the diameter of the associated bore and in that between the tenon walls and bore walls are provided four segment-shaped gaps filled with glue.
Claim 14
Dependent Claim
105 words
Tenon joint for two parts of a wooden frme, for example solid wood strut constructions such as tables, chairs and furniture frames, having a plurality of rows of machined tenons on the first part, each row including a plurality of said tenons, and cylindrical bores in the second part into which the tenons are pressed and glued, characterised in that the tenons have in substance a square cross-section and the length of each diagonal of the square cross-section is larger than the diameter of the associated bore and in that between the tenon walls and bore walls are provided four segment-shaped gaps filled with glue.
Claim 15
Dependent Claim
25 words
Tenon joint according to claim 11 characterised in that the bores are countersunk conically or cylindrically in order to enable easy insertion of the tenons.
Claim 16
Dependent Claim
17 words
Tenon joint according to claim 11 characterised in that the machined tenons and the bores are tapered.
Claim 17
Dependent Claim
19 words
Joint construction according to claim 1 wherein said plurality of rows of tenons comprise two parallel rows of tenons.
Claim 18
Dependent Claim
18 words
The method of claim 8 wherein said plurality of rows of tenons comprise two parallel rows of tenons.
Claim 19
Dependent Claim
11 words
A joint construction maufactured according to the method of claim 15.
Claim 20
Dependent Claim
14 words
An article of manufacture including at least one joint construction according to claim 14.
Claim 21
Dependent Claim
19 words
Tenon joint according to claim 11 wherein said plurality of rows of tenons comprise two parallel rows of tenons.
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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) | 1988-01-15 | 1988-07-16 | 1989-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-15 | 1992-07-16 | 1993-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-15 | 1996-07-16 | 1997-01-15 | $7700.00 | Window Closed / Lapsed |