Static structures (e.g. – buildings) – Log wall-type construction
Reexamination Certificate
2002-06-18
2004-05-04
Canfield, Robert (Department: 3635)
Static structures (e.g., buildings)
Log wall-type construction
C052S745090, C052S747100, C446S106000
Reexamination Certificate
active
06729084
ABSTRACT:
This invention relates to both a kit and a method for building the wall(s) of a log structure, such as a log cabin. The kit and the method involve the use of a chink which joins two logs together in parallel, resulting in a substantially air-tight seal between the logs of the structure. This seal promotes insulation of the structure interior from the outside elements and permits water to run down and off the exterior wall of the structure.
There have been many attempts in the art to achieve a satisfactory kit and method for building log structure walls; however, most suffer from poor insulation and water run-off problems or involve complicated construction steps.
U.S. Pat. No. 5,020,289 to Wrightman discloses a “tongue and groove” log joint for making a structure. As shown in
FIG. 3
of that reference, a pair of grooves
88
are formed in the lower edge
72
of the overlying log
12
. The grooves
88
are spaced from one another by a longitudinally extending ridge
90
. The grooves
88
have outer side walls
92
each formed with caulking shoulders
94
which are arranged to cooperate with the caulking
90
of the underlying log to provide caulking cavities
96
therebetween.
U.S. Pat. No. 4,742,657 to Veech discloses a cabin made with a spline joint tab located within a corner formed by the intersection of horizontal and vertical slots. Tab
126
covers and seals the joints where the horizontal and vertical splines meet.
U.S. Pat. No. 5,601,849 to Dunstan discloses a log structure in which logs are joined by chinking structures
30
and
32
, as shown in
FIG. 1
of that reference.
SUMMARY OF THE INVENTION
The present invention is a kit for building a wall, for instance the wall of a log structure, such as a log cabin. It includes a log with a substantially cylindrical outer surface and an axially-extending groove formed in its surface, an elongated chink having an axially-extending inserting surface and an axially-extending protruding surface. The elongated chink is sized and shaped to fit into the axially-extending groove with a portion of the elongated chink protruding therefrom. The axially-extending inserting surface for facing the interior of a first log and the axially-extending protruding surface for facing the exterior of the first log.
The invention also includes a second log having a substantially cylindrical surface. The first log, the first elongated chink, and the second log are adapted for mutual contact such that both the first log and the axially-extending protruding surface of the elongated chink abut the second log to form a first chamber bounded in part by the first log, the elongated chink, and the second log. The axially-extending protruding surface of the first elongated chink has a curved shape matching and abuttingthe curved shape of the substantially cylindrical surface of the second log.
REFERENCES:
patent: 4034527 (1977-07-01), Jalasjaa
patent: 4391067 (1983-07-01), Frady et al.
patent: 4742657 (1988-05-01), Veech
patent: 4951435 (1990-08-01), Beckedorf
patent: 5020289 (1991-06-01), Wrightman
patent: 5577357 (1996-11-01), Civelli
patent: 5601849 (1997-02-01), Dunstan et al.
patent: 6023895 (2000-02-01), Anderson
patent: 6543193 (2003-04-01), Houseal
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