Static structures (e.g. – buildings) – Processes – Filling preformed cavity
Patent
1993-05-17
1995-08-15
Friedman, Carl D.
Static structures (e.g., buildings)
Processes
Filling preformed cavity
525145, 52514, 144 2M, 144332, E02D 3700, E04G 2300, B27G 100
Patent
active
054408598
ABSTRACT:
Defects in wooden boards, such as knots, knotholes or cracks, are repaired by forming an opening in the board at the site of the defect and forming a plug that fills the opening. In some forms of the invention the opening has a shape which interlocks the plug to the board. In another form of the invention, the plug is held in place by a transversely extending resilient member that is embedded in the plug and which is under tension which causes edge portions of the member to bite into or bear against the adjacent wood. Forming the opening includes cutting away bark encasement tissue that may adjoin the defect which encasement can cause a discoloration upon painting of the board and may eventually loosen. In some forms of the invention, cracks are repaired by making plural saw cuts along a crack to form the opening with the saw having a different angling relative to the board during each saw cut. In another form of the invention, the opening and plug extend between opposite surfaces of the board and have a width which increases at a plurality of spaced apart locations within the board and decreases at a plurality of alternate locations.
REFERENCES:
patent: 256567 (1882-04-01), Holmes
patent: 276499 (1883-04-01), Story
patent: 1594739 (1926-08-01), Leash
patent: 1689705 (1928-10-01), Walker
patent: 1703890 (1929-03-01), Loetscher
patent: 1976722 (1934-10-01), Goss
patent: 2217311 (1940-10-01), Goss
patent: 2263536 (1941-11-01), Dike
patent: 2392751 (1946-01-01), MacKenzie
patent: 2570588 (1951-10-01), Nylund
patent: 2583396 (1952-01-01), Skoog
patent: 4674255 (1987-06-01), Derome
patent: 4894971 (1990-01-01), Cortese
patent: 4941305 (1990-07-01), Cortese
Canfield Robert J.
Friedman Carl D.
Zimmerman Harris
LandOfFree
Board of lumber defect repair does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Board of lumber defect repair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Board of lumber defect repair will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2174107