US2817620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doweling process
Assignee: Monsanto Chemicals Ltd
•
Filing: 1954-06-22
•
Granted: 1957-12-24
•
Expires: 1974-06-22
Abstract
No abstract record available.
Inventors
- 👤 Alexander J Golick
- 👤 Gordon E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:48
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/04; A; A47; A47B; A47B2230/00; A47B2230/0029; A47B2230/0037; Y; Y10; Y10S; Y10S411/00; Y10S411/914; Y10S411/955; Y10S411/965; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49885; Y10T403/00; Y10T403/47; Y10T403/55
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS FOR GLUDING TOGETHER A PLURALITY OF PIECES OF WOOD BY MEANS OF WOODEN DOWEL PINS, WHICH COMPRISES UNIFORMLY IMPREGNATING THE DOWEL PINS WITH A SUBSTANTIALLY DRY SOLID PULVERULENT ACIDIC COMPOUND, INJECTING AN AQUEOUS SOLUTION OF AN ACID CURING UREA-FORMALDEHYDE CONDENSATE INTO DOWEL HOLES IN THE WOOD PIECES, INSERTING THE IMPREGNATED DOWELS INTO THE HOLES, AND FORCING THE PIECES OF WOOD AND DOWELS TOGETHER INTO CLOSE CONTACT, SAID IMPREGNATION OF THE DOWEL PINS BEING SOLID STATE IMPREGNATION WHEREBY A FINELY DIVIDED SOLID ACIDIC COMPOUND IS FORCED INTO THE INTERSTICES BETWEEN THE WOOD FIBERS BY MECHANICAL ACTION.
Claim 2
Dependent Claim
97 words
A PROCESS FOR GLUDING TOGETHER A PLURALITY OF PIECES OF WOOD BY MEANS OF WOODEN DOWEL PINS, WHICH COMPRISES UNIFORMLY IMPREGNATING THE DOWEL PINS WITH A SUBSTANTIALLY DRY SOLID PULVERULENT ACIDIC COMPOUND, INJECTING AN AQUEOUS SOLUTION OF AN ACID CURING UREA-FORMALDEHYDE CONDENSATE INTO DOWEL HOLES IN THE WOOD PIECES, INSERTING THE IMPREGNATED DOWELS INTO THE HOLES, AND FORCING THE PIECES OF WOOD AND DOWELS TOGETHER INTO CLOSE CONTACT, SAID IMPREGNATION OF THE DOWEL PINS BEING SOLID STATE IMPREGNATION WHEREBY A FINELY DIVIDED SOLID ACIDIC COMPOUND IS FORCED INTO THE INTERSTICES BETWEEN THE WOOD FIBERS BY MECHANICAL ACTION.
References Cited (Backward Citations)
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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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |