Converted log structural products and method

Converted log structural products are produced from conventionally unusable or marginally useful sections of logs transversely cut into suitable lengths and then cut longitudinally by perpendicular cuts into log parts of either right-angled sector or right triangle cross-section. Four log parts matching in size and shape, and positioned so that their right angles form the corners of a rectangle, are assembled into a converted log, the interior space between the four log parts being filled selectively with braces, supports, insulation, concrete for various applications.

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Claims

2. The converted log product of claim 1, wherein said four log parts are right-angled sectors cut at the periphery of said at least one log, remaining portions of said log being available for use as conventional lumber.

3. The converted log product of claim 1, wherein said four log parts are right-angled sectors cut from the conventionally discarded core of at least one log, the outer portion of said at least one log having been removed from said core for conventional uses.

5. The converted log product of claim 2, wherein said four right-angled sectors have been cut from said at least one log's periphery by a first longitudinal chordal cut followed by a second radial cut at right angles to and bisecting said first chordal cut.

Referenced Cited
U.S. Patent Documents
4741144 May 3, 1988 Graffin
Foreign Patent Documents
262567 June 1988 ATX
027 356 October 1990 CAX
388 507 February 1989 EPX
0518 246 June 1992 EPX
962 589 June 1950 FRX
2512 729 March 1983 FRX
3516287 March 1987 DEX
924 088 September 1991 DEX
12 15502 August 1989 JPX
465 412 September 1991 SEX
189073 November 1922 GBX
Other references
  • Patent Abstracts of Japan, vol. 13, No. 256 (M897), 22 Nov., 1989--Abstract of JP-A-12 (above). Database WPI, Week 8907, Derwent Publications, Ltd., London, GB AN 89-052357 Abstract of SE-B-465 412 (above).
Patent History
Patent number: RE36153
Type: Grant
Filed: Mar 24, 1995
Date of Patent: Mar 23, 1999
Inventor: Peter Sing (Winslow, WA)
Primary Examiner: W. Donald Bray
Application Number: 8/410,508
Classifications
Current U.S. Class: 52/3099; Log Wall-type Construction (52/233); 52/30911; 52/30915; Debarking (144/340); Of Interengaging Work Parts (e.g., Dovetail) (144/347); Plural Discrete Diverse Cutting Operations (144/367)
International Classification: B27C 900; E04C 100;