CA2696085C

CA2696085C - Corner coupling device for use in log construction

Info

Publication number: CA2696085C
Application number: CA 2696085
Authority: CA
Inventors: Kenneth G. Moore
Original assignee: COLONIAL CONCEPTS Inc
Current assignee: Colonial Log & Timber Inc
Priority date: 2010-03-05
Filing date: 2010-03-05
Publication date: 2011-10-25
Anticipated expiration: 2030-03-05
Also published as: CA2696085A1

Abstract

Disclosed herein is a coupling device for making angled log corner connections. The device comprises a first elongated coupling portion with a length dimension of "C" and having a second coupling portion having a length "D" coupled thereto in a parallel axis. The first coupling portion in shaped to be received in a first passage located near an end region of a log and the second coupling is shaped to be received in a second passage located near an end region in a horizontally adjacent log. The first coupling portion has first and second coupling end regions for complementarily receiving first and second coupling end regions of like coupling devices. The second coupling portion has trapezoidal cross section wherein it is narrowest at the juncture of coupling to the first coupling portion and the second passage is substantially complementarily shaped. A log construction and method use of the device for making log connections is also provided herein.

Description

CORNER COUPLING DEVICE FOR USE IN LOG CONSTRUCTION
FIELD
100011 The present disclosure relates to log construction.

BACKGROUND
100021 Log construction has been a primary mode of residential construction, particularly in Canada, for several centuries. In recent years, advances have been seen in the fit of log joints, particularly in corner connections. An example of such advancements is disclosed in the Canadian Patent Number 2,206,290, wherein the use of rigid barriers in the construction of a corner connection is disclosed.

100031 It is desirable to provide further advancements on those disclosed and to develop a device and accompanying method for maintaining a substantially tight log corner connection as logs used in the log construction contract over time.

SUMMARY OF THE GENERAL INVENTIVE CONCEPT

100041 The following presents a simplified summary of the general inventive concept herein to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the invention. It is not intended to restrict key or critical elements of the invention or to delineate the scope of the invention beyond that explicitly or implicitly described by the following description and claims [0005) In an exemplary embodiment, there is provided a coupling device for use in a log construction involving a plurality of stacked logs. In the construction, each log has a first lateral log dimension and each log has an end region which is shaped to form a log connection with an adjacent log. The end region also has a second reduced lateral log dimension. The device includes a first coupling portion with a central longitudinal axis and a longitudinal first span approximating the first log dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a second span parallel with the central longitudinal axis approximating the second log dimension. The first coupling portion is configured to extend through a first passage and extend through the first log dimension of one log. The second coupling portion is configured to extend through a second passage and extending through the second log dimension of an adjacent log. Furthermore, the first coupling portion includes a pair of end coupling regions and a central passage which extends therebetween and is open to the pair of end coupling regions, each end coupling region is configured for complementary engagement with an opposing end coupling region of a neighboring coupling device when forming a second log connection.

(0006( In some exemplary embodiments, the first coupling portion has a circular cross section.
(0007( In some exemplary embodiments, the second coupling portion has a pair of outer surfaces which are convergent toward the first coupling portion.

(0008( In some exemplary embodiments, the second coupling portion has a trapezoidal or triangular cross section.

(0009( in some exemplary embodiments, the second coupling portion has a first abutment surface thereon to engage an inclined face, when oriented relative to a first plane, on an end region of the adjacent log.

(00010( In some exemplary embodiments, the second coupling portion has a second abutment surface thereon, .as an alternative to the first abutment surface, to engage the inclined face, when oriented relative to a second plane, on the end region of the adjacent log.

(00011( In some exemplary embodiments,. the second coupling portion has a third abutment surface opposite the first and second abutment surfaces, the third abutment surface oriented to engage an inclined face on an adjacent log in the second log connection 1000121 In some exemplary embodiments, the first coupling end region has a configuration which is complementary to the second coupling end region .__.:._ . _... ...
:.

100013 In some exemplary embodiments, the first coupling end region has a male configuration or a female configuration.
=
1000141 The present disclosure also provides an exemplary embodiment of log construction which comprises a plurality of stacked logs. In this log construction, each log has a first log dimension and each log has an end region which is shaped to form a log connection with an adjacent log wherein the end region has a second log.dimension. A coupling device which includes a first coupling portion with a length approximating the first log dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a length approximating the second log dimension is provided. The first coupling portion is configured to extend through a first passage which extends through the first log dimension of the first log; the second coupling portion is configured to extend through a second passage extending through the second log dimension of the second log. The first coupling portion includes a pair of end coupling regions and a central passage extending therebetween. The central passage opens to the pair of end coupling regions for receiving a fastener therein. Each end coupling region is configured for complementary engagement with amend coupling region of a neighboring coupling device for forming a stack therewith.

1000151 An exemplary embodiment provides a method of forming a log connection which comprises providing a pair of logs, each with a first log dimension and an end region which is. shaped to form a complementary log connection with the other log formed along a first pair of longitudinal interface surfaces generally inline with a longitudinal axis of each log and at least a second pair of lateral interface surfaces generally perpendicular to the longitudinal axis of one of the logs, providing a first passage through a first of the logs with openings on opposite sides thereof and with, the first passage to be adjacent and open to, the second pair of lateral interface surfaces, providing a second passage in the end region of a second of the ' logs with openings on opposite sides of the end region, with the second passagq to be adjacent and open to the second pair of lateral interface surfaces, engaging the end regions of the logs to form the log connection to form the first and second interface surfaces with one of the second openings terminating at the first interface surfaces; installing a coupling device with first and second coupling portions respectively extending into the fast and second passages for joining the logs together in the log connection, orienting a first coupling portion so that it extends through the first passage and is in communication with the first openings and a second coupling portion extending laterally outwardly from. the first coupling portion and through the second interface surfaces with one end of the second coupling portion terminating at or near the first interface surfaces. .

1000161 The method, in some exemplary embodiments, further comprises the-step of providing the second passage and the second coupling portion with complementarywedge shaped cross sections.

1000171 In another exemplary embodiment, the method further comprises providing the first passage and the first coupling portion with complementary circular cross sections.

1000181 In yet another exemplary embodiment, the method further comprises providing the first coupling portion with a central passage and extending a fastener through the central passage to anchor the log connection.

1000191 In still some additional exemplary embodiments, the method further comprises providing the first coupling portion with complementary end regions, each for interconnecting with an end region of a neighboring first coupling portion to form a stack.

.1000201 In yet another embodiment of the disclosure, an exemplary log corner construction is provided. The log corner connection construction comprises a first group of logs forming a first side of the corner construction and a second group of logs forming a second side of the corner construction, the corner construction is formed of a stack of log connections wherein each log connection. includes one log from each of the first and second groups. Each of the logs of the first group has a first access passage extending from an upper boundary to a lower boundary thereof such that the first access paths of the first group are co-linear so to form a single aligned first path through the first group and each of the logs of the second group having a second access path extending from an upper boundary to a lower boundary thereof such that the second access paths are co-linear so as to form a second path through the second group. Furthermore, each log of the first and second groups have a first log dimension' and an end region having a first interface. . ....
surface located parallel to, and open to, a corresponding first or second passage therein. Each log of the first and second groups have a second interface surface for engaging a corresponding first interface surface of an adjacent log of the first and second groups, and a third interface surface for engaging a corresponding third interface surface of the adjacent log. Additionally, each of the logs of the first group has a first cavity extending from its upper or lower boundary along, and opens to, its second interface surface and terminating near its third interface surface: Similarly, each of the logs of the second group has a second cavity extending from its upper or lower boundary along; and opens to, its second interface surface and terminating near its third interface surface. Also, first and second groups of coupling devices for joining the log connections togetherto form the corner construction are provided wherein each coupling device includes a first coupling portion with a longitudinal dimension approximating the first dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a span substantially parallel with the longitudinal dimension and approximating the second dimension. The first group of coupling devices forms a substantially continuous stack of first coupling portions extending through the aligned first access paths and forms a set of spaced second coupling portions, each extending from the first access path and into the first cavity, with adjacent second coupling portion being separated by the end region of a corresponding log. The second group of coupling devices similarly forms a substantially continuous stack of first coupling portions extending through the aligned second access paths and forms a set of spaced second coupling portions, each extending from the second access path and into the second cavity, with adjacent second coupling portion being separated by the end region of a corresponding log.

1000211. An exemplary embodiment also provides a method for forming a log construction comprising:

a. providing at least two logs, b. providing each log with a first log dimension and an'end region which is shaped to form a log connection with the other log, with the end region having a second log dimension, c. providing, in at least one of the logs, a first passage extending through the first log dimension and, in at least the other of the, logs,- a second passage extending through the second log dimension, d. providing a coupling device to form the log connection, the device including a first coupling portion.with a length approximating the first log dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a length approximating the second log dimension, a central passage extending through the first coupling portion and bounded by a pair of end regions, each of which being in communication with the central passage and configured for complementary engagement with an end region of a neighboring coupling device for forming a stack therewith, the second coupling portion having an end section with first and second abutment surfaces formed thereon, the first abutment surface oriented according to a first plane and the second abutment surface oriented according to a second plane, e. installing the coupling device with the first coupling portion extending through the first passage and the second portion extending through the second passage;

f. locating the end section adjacent an inclined face on the end region, and engaging either the first abutment surface or the second abutment surface according to the orientation of the inclined face relative to the first and second planes, g. providing a pair, of retaining members for placement on opposite sides of the log connection, and ' ' . .
h. installing a fastener through the central passage and coupling the fastener to each of the retaining members.

1000221 In another exemplary embodiment, a log corner construction comprises at least one log which has ..... ..... ._ ..
an end region with a first interface surface located thereon shaped for abutting a second interface surface located on a portion of an.upright. corner member is provided. In this embodiment, the log has a first lateral CC-CS/CDA
ti log dimension defined by an upper boundary and a lower boundary. thereof. and is maintained in communication with the corner member by a coupling device. The coupling device includes a first coupling portion with a central longitudinal axis and a longitudinal first span approximating the first log dimension and'a second coupling portion extending laterally outwardly from the first coupling portion.
The first coupling portion is configured so as to extend through a first access path. extending from the upper boundary to the lower boundary of the log and includes 'a pair of end coupling regions adapted for complementary engagement with an opposing end of a like neighboring device.
The first access path is open along one side to the first interface surface and the corner member has at least a second access path is open to the second interface surface formed therein substantially along its length in at least one side. The first access path is configured for receiving the first coupling region therein and the second access path configured for receiving the second coupling portion therein so as to couple the log and the corner member.
1000231 In some exemplary embodiments, the first coupling region has a., central passage extending between and open to the pair of end coupling regions. Furthermore, the central passage, in some exemplary embodiments, is provided for receiving therethrough a rod for connecting a plurality of like devices.

1000241 In some exemplary embodiments, more than one log is provided so as to form a. plurality of stacked logs stackable for forming a wall. In such exemplary embodiments, the upper and lower boundaries of each log may be provided with complementary lateral interconnecting surfaces so as to interconnectingly mate with a relative upper log or a relative lower log.

1000251 In still yet another exemplary embodiment, the corner member includes a third access path open to a third interface surface formed therein along its length in another side. In some exemplary embodiments, the third interface surface communicates with the first interface surface of a second log and the third access path is provided for receiving therein the second coupling portion of a second coupling device so as to form a linking of at least two logs.

BRIEF DESCRIPTION OF THE DRAWINGS

[000261 Several exemplary embodiments of the present invention will be provided, by way of examples only, with reference to the appended drawings, wherein:

1000271Figure I is perspective view of an exemplary embodiment of two like coupling devices;
1000281 Figure 2 is a side view of an embodiment of the device;

1000291 Figure 3 is a fragmented perspective view of an embodiment of the device and horizontally adjacent logs prior to coupling;

1000301 Figure 4 is a fragmented perspective view of an embodiment of the device and horizontally adjacent logs as installed for connection of the upper and lower log rows;

1000311 Figure 5 is a fragmented cut-away side view of an embodiment of a plurality of the device in use with upper and lower log rows and horizontally adjacent logs; -[00032 Figure 6 is a fragmented side view of an embodiment of a plurality of the device in ghost in use with, upper and lower log rows and horizontally adjacent logs;

1000331 Figure 7 is a perspective view of an embodiment of a plurality of the device connected by a fastening member;

[000341 Figure 8 is a perspective view of an embodiment of a plurality of the device connected by an embodiment of a fastening member;

1000351 Figure 9 is a fragmented perspective view of an embodiment of a corner construction;
1000361 Figure 10 is cut-away side view of an embodiment of a plurality of devices in operation.
1000371 Figure 11 is a fragmented perspective of an embodiment of a plurality of the device in use with upper and lower log rows and a comer member; and 1000381 Figure 12 is a fragmented side view of the embodiment of Figure I I
with a plurality of the device in ghost in use with upper and lower. log rows and a corner member.

.... .
DESCRIPTION OF THE EXEMPLARY. EMBODIMENTS

1000391 It should be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of"including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless limited otherwise, the terms "connected," "coupled," and "mounted," and variations thereof herein are used broadly and encompass direct and indirect connections, couplings, and mountings. In addition, the terms "connected" and "coupled" and variations thereof are not restricted to physical or mechanical connections or couplings. Furthermore, and as described in subsequent paragraphs, the specific mechanical, other configurations illustrated in the drawings are intended to exemplify embodiments of the invention. However, other alternative mechanical or other configurations are possible which are considered to be within the teachings of the instant disclosure.

1000401 With reference to figures, there is provided a coupling device 10 shown in FIG. I for use in a log construction shown at 12 in FIG. 6, wherein the device 10 is shown in communication with a plurality of logs 14 forming a plurality of overlapping lap joint connections 26 between overlapping adjacent logs 14 in one exemplary embodiment. As will be described, the log construction 12 involves a plurality of vertically stacked logs 14 in relative upper and lower rows 50, 48 (FIGS. 4 and 10), wherein each log has a first lateral log dimension of substantially "A". Further, as shown in FIG. 3, each log has an end region 16 which is shaped to form a log connection 18 with a horizontally adjacent log 14, as shown in FIG 4. In this case, the end region 16 has a second reduced lateral log dimension B I"
or "B2" as shown in FIG. 4.
For the purposes of the present disclosure, the log connection 18 is intended to mean the connection of two logs in a corner configuration as shown in FIG. 4. A number of log connections when stacked together form a corner or angle construction, such as the type used in log construction, as is shown in FIGS. 4, 5 and 6.

.............
In order to form the overla in la oints 26 between horizontal) adjacent communicating 1000411 PP g PJ Y logs 14, as shown in FIG. 4 and other figures, the end regions 16 of the logs, as noted above, have a second reduced lateral log dimension of either `B I" or "B2". As used herein, and shown in FIGS.4 and 10, the second reduced lateral log dimension "B I" refers to a lower cut end region 17a and the second reduced lateral log dimension "BT' refers to an upper cut end region 17b. In practice, a lower surface 46b and an upper surface 46a of the upper cut end region I7b and the lower cut end region 17a respectively are complementary for forming the lap-joint 26. In some exemplary embodiments, the upper and lower surfaces 46a and 46b are referred herein as third interface surfaces which are inclined as will be described below. When the upper cut end region 17b and the lower cut end region 17a are in communication, the dimensions "B I" plus "B2" are substantially equal to dimension "A" as shown in FIGS. 4 and 10.

1000421- As shown in FIGS. 3 and 4, near the end region 16, a first passage 24 is bored parallel to the axis of dimension "A" and open to one side in a void to be occupied by the upper cut end region 17b or the lower cut end region 17a when horizontally adjacent logs 14 are in operable communication. The first passage 24 is complementary in shape and dimension to a first coupling portion 20 of the device 10. With reference to FIG. 3; a second passage 28 is formed in each of the upper cut end region 17b and the lower cut end region 17a for receiving a second coupling portion or protrusion 22 of the device 10, in operation.
Thus, fora given lap joint connection 26, there are, in this example, two pairs of the first and second passages 24, 28 to receive two coupling devices as shown in the upper view of FIG. 4. Alternatively, the lap joint connection may be provided'in another example with just one first and second passage and one coupling device.

1000431 In the example of FIG. 4, the side of the first passage 24, open to the void, allows the second coupling portion 22 to communicate with the second passage 28 of a horizontally adjacent log 14 for connecting said logs 14 in a lap-joint 26 as shown in FIG. 4. FIG. 6 shows the interaction of adjacent logs .
14 in communication with a plurality of the devices 10 installed with the first coupling portion 20 in the first passage 24 and the second coupling portion 22 within the second passage 28 of an adjacent or neighboring log 14.

1000441 Having now substantially described the interaction of the logs in horizontal adiacent communication and the interaction of the device 10 in operation, the following describes the device 10 in more detail with reference to FIG. 1. The device 10 comprises a first coupling portion 20 with a central longitudinal axis 21 having a first span "C". The first span "C" is approximately equal in length to dimension "A" (FICA). Extending laterally from the first coupling portion 20 is the second coupling portion 22. The second coupling portion 22 has a second span "D" parallel with the central longitudinal axis 21 and, in length, approximately equal to, or less than dimensions "B I"
or "B2"respectively.
1000451 The first coupling portion 20 also includes a pair of end regions 30 and 32. As shown in FIGS. 1. and 2 as well as other. figures, the first coupling end region 30, in certain embodiments, is of a lesser diameter, but complementarily shaped to be received into a second coupling end region 32. FIG. 6 shows the plurality of the devices 10 stacked in a column, wherein the plurality of the devices 10 are coupled together, in operation, such that first coupling end region 30 is received into a second coupling end region 32 of another like device 10..

1000461 Although the cross-sectional shape of the first coupling portion 20 may be variable such as, for example, a square, a rectangle, a hexagon, or other suitable polygon, in a preferred embodiment, as shown in the figures, specifically FIGS. I and 2, the first coupling portion 20 has a circular cross section.
The circular cross section of the first coupling portion 20 in various embodiments is designed to be complementary with the first passage 24. In other exemplary embodiments, not shown, the cross-sectional shape of the first coupling portion is dimensioned to be received in the first passage. Thus; in this regard, the device 10, or a plurality of devices 10, may be installed to connect a plurality of logs 14 in the formation of joints to form a wall as shown in FIG. 6.

1000471 In various embodiments, the first coupling portion 20 has an axial bore or central passage 34 extending the length of span "C" as shown in FIGS. I and 2, as well. as other figures. In such embodiments, the axial bore or central passage 34, is open at both the first coupling end region 30 and the second coupling end region 32 such that when a plurality of the devices 10 are coupled together in operation, a rod 36 (FIG. 7) or similar fastening member may pass through the central passage 34 so as to couple the plurality of devices 10 together as well as to draw together the log construction.

1000481 Referring now to FIGS. I and 2, the second coupling portion 22, has pair of outer surfaces 38a and 38b. The second coupling portion 22 also has a longitudinal outer surface 40 which adjoins each outer surface 38a and 38b about a corresponding outermost edge. In certain embodiments, such as those shown in the figures, the longitudinal outer surface 40 is wider across dimension "E" than where the outer surfaces 38a and 38b join the first coupling portion 20. Therefore, in such embodiments, the outer surfaces 38a and 38b are convergent toward the first coupling portion 20. Thus, the cross-section shape of the second coupling portion 22, in various exemplary embodiments, may be similar to that of trapezoid or a triangle, though the coupling portion may have other shapes in other examples.

1000491 As best shown in the side view of FIG. 2, the second coupling portion 22, in certain embodiments, has an inclined surface or third abutment surface 42 wherein the edge nearest the first coupling portion 20. is higher in relative elevation than that of the edge nearest the longitudinal outer surface 40 (as viewed in FIG. 2). The slope or incline of the inclined surface 42 is represented by"F".
The third abutment surface 42 is inclined to match the lower inclined surface 46b of end region 17b as shown in FIG. 5.

1000501 In some exemplary embodiments, horizontally adjacent logs 14, as shown in FIG. 5, as well as other figures and described above, have complementary end regions I 7a and 17b, each having complementarily upper and lower inclined surfaces 46a and 46b respectively. In operation, as can be seen from FIG. 5, end regions 17a and I7b are formed into the lap joint 26 with complementary upper and lower inclined surfaces 46a and 46b forming a substantially interlocking web by virtue of the upper and lower inclined surfaces 46a, 46b. The interlocking web is thus substantially maintained in place by the installation of a plurality of the devices 10 complementarily in the first and second passages 24, 28 (FIGS.
3 and 4) and adjoining thereto.

1000511 Furthermore, as shown in FIG. 1, the second coupling portion 22 has an end region which includes at least. a first abutment surface 44a vertically opposite the inclined surface 42 to engage the upper inclined surface 46a on end region 17a as best illustrated in FIG. 6 in the region encircled in a dashed line at "A". In certain exemplary embodiments, the second coupling portion 22 may also include a second abutment surface also to engage the upper inclined surface 46a of the end region 17a in.an opposite corner ._.... ...... ......
formation, as shown in FIG. 9. Thus, the first and a second abutment surfaces 44a, 44b, may in some embodiments, be located vertically opposite the inclined surface 42 and form a substantially "V" bottom portion or end region of the second coupling portion 22 as can be seen in FIG.
6. By having the abutment surfaces 44a and 44b join to form a substantially "V-shaped" end region of the second coupling portion 22, the device 10 may be used to engage both left- and right-hand log connections.
Thus, in this embodiment, it may not be necessary to provide two devices 10, wherein one has an abutment surface sloping to a right side and another substantially similar device 10 with an abutment surface sloping to aleft side in order to engage the upper inclined surface 46a of the end regions 17a as shown in FIGS.
5 and 6 to form a connection of horizontally adjacent logs 14. That being said, separate left and right handed devices, each with a corresponding lone of the surfaces 44a, 44b may be employed, as desired.

1000521 In an exemplary embodiment of operation, as shown in FIGS S and 6, there may be two columns or stacks 52 and 54 of devices 10 formed where neighboring logs 14 are. joined together. The practice or operation of an exemplary embodiment of the device 10 for adjoining or coupling adjacent logs is described in the forgoing paragraphs with reference to the figures.

1000531 Referring to FIG. 4, with respect to log connection 48, the first coupling portion 20 is configured to extend through the first passage 24 with a first log dimension of "A" and the second coupling portion 22 is configured to extend through the second passage 28 of the second dimension "B 1" of a horizontally adjacent or neighboring and communicating log 14. In this arrangement, the second coupling portion 22 is maintained in the second passage 28 of the neighboring log 14 end region 17b with the first abutment surface 44a abutted against the upper inclined surface 46a of the end region 17a of the first log 14 (FIG. 6). These steps are repeated for another device being inserted; in the adjacent log, resulting in at least two coupling devices in each log connection, in this example.

1000541 In the stacking of devices 10 within logs 14, the end nearest the first coupling end region 30 of the first coupling. portion 20 of a device 10 is the received in a lower region of the first passage or bore 24 of an upper row 50 of logs 14 as shown in FIG. 4.'A second device 10 may then be inserted in the fast passage 24 where the second coupling end region 32 of second device 10 is coupled within the first coupling end region 30 of the first device 10 as is shown in FIGS 5and.6.
These steps continue as..
successive logs are assembled into successive log connections, resulting in the log construction 12.
CC-CS/CDA 13 .

1000551 Also shown in FIGS. 5 and 6, the second column 54 of devices 10 is formed amongst lower 48 and upper 50 rows and adjacent logs 14. In operation, the devices 10 of the second column 54 are similarly positioned to those of first column 52 as noted above with the first coupling portion 20 being received substantially in the first passage 24. As shown in the second column 54 of FIGS. 5 and 6, the second coupling. port ion 22 is received with the second passage 28 of a log 14 such that the inclined third abutment surface 42 is parallel with the upper inclined surface 46a of the lower end region 17a. When the second coupling portion 22 is received in such a manner, the inclined third abutment surface 42 does not extend so as to interfere with the lower inclined surface 46b of the upper end region 17b of a horizontally adjacent log 14 as shown in FIG. 5 and in ghost in FIG.6. In other words, in this example, the inclined third abutment surface 42 lies parallel to and does not extend beyond the interface between surfaces 46a and 46b. However, there may be some cases in which the surface 42 or formations thereon do indeed extend beyond the interface, for example to enhance the coupling there between. Thus, as can be seen, a portion of the first coupling portion 20 located near the second coupling end region 32 is received in a portion of the first passage located in a lower row 48 of logs and is coupled with.the first coupling end region 30 of another like device l0a (FIG. 5).

1000561 As described above, a plurality of the like devices 10 are arranged, in certain embodiments, in at least one of the columns 52 or 54. Preferably, as shown in the figures both the first column 52 and- the second column 54 are used to maintain horizontally adjacent logs 14, and upper 5.0 and lower 48 log rows in communication as described herein. Furthermore; as shown in FIG. 7, a connecting rod 36 or suitable fastening member is then received through the central passage 34 of the plurality of devices 10 installed in a plurality of logs 14, for example as,shown in FIGS. 5 and 6. The connecting rod 36 maintains the relative upper 50 and lower 48 rows of logs in vertical alignment. In some embodiments, the connecting rod 36 has means for applying pressure along its length, for example by way of a threaded portion 56'and complementary nut 58 as shown in FIG. 7. In other embodiments, a coil spring 60 may be installed about the rod 36 between the first coupling end region 30 of the device 10 and the nut 58 as shown in FIG. 8 so as to reduce the frequency with which the nut 58 must tightened as the logs contract over time. In some exemplary embodiments, at least one end of the rod 36 may be coupled to a through-bolt holder 62 as shown in FIG. 8.

1000571 Owing to the moisture properties and other physical properties of logs 14, in some embodiments, the .convergent shape of the outer surfaces 38a and 38b of the second, coupling portion 22 may cause horizontally adjacent logs 14 to be maintained in close contact.
Since the second passage 28 is complementary to the convergent shape of the outer surfaces 38a and 38b, as the moisture content of the log 14 is reduced and the log's dimensions contract, the log may naturally be forced inwards to the log connections 18. In a preferred embodiment, the first and second columns 52 and 54 of devices 10 are -configured to couple horizontally adjacent logs 14 in substantially right-angled or, opposing directions or in other embodiments (not shown) at various other angles relative each other.
As the logs 14 contract they may be pulled towards each other by way of log contractile (or compressive) forces acting on the device 10, thus maintaining a log connections 18 joints tight over time. In the example of the device 10 as shown, the first coupling portion 20, if snugly held within passage, results in balanced compressive forces exerted thereon as the log progressively loses moisture and dries out. On the other hand, the wedge shape of the second coupling portion and its corresponding passage result in net compressive forces that tend to draw the receiving log (i.e. the log receiving the second coupling portion) to be drawing toward the adjacent log (i.e. the log receiving the first portion. Thus, when the log connection is provided with thecolumns of coupling devices 52 and 54, each log in the log connection is drawn to its adjacent log, resulting in an enhanced connection. In addition, each coupling device provides both a considerable structural connection across the corresponding interfacing surfaces to provide a secure log connection, as well as a direct or physical interrupting weather barrier across the interfacing surfaces.
Further, owing to the progressively tightening connection from the shrinkage of the logs, the interfacing surfaces themselves may over time prove to be tighter than in other log connections to provide for improved, weather resistance. Still further, additional weather barrier strips may be provided as desired through the various interfacing surfaces, as desired.

1000581 In light of the description above and for further clarity, the device 10 includes the first coupling portion 20 with the central longitudinal axis 21 and the longitudinal first span "C" approximating the first log dimension "A". The second coupling portion 22 extends laterally outwardly from the first coupling portion 20 with the second span "D" parallel with the central longitudinal axis 21 approximating the second log dimensions "B I" or "B2". The first coupling portion 20 is configured to extend through the first passage 24 extending through the first log dimension "A" of one log 14.
The second portion 22 is configured to extend through the second passage 28 extending through the second log dimension "B 1" or "B2" of an adjacent log 14. The first coupling portion 20 includes end regions 30 and 32 and the central-passage 34 extending between and open thereto. Each end region 30 or 32 is configured for complementary engagement with an end region 30 or 32 of a neighboring coupling device 10 when forming a second log connection so as to couple the relative upper 50 and lower 48 log rows. The first coupling end region 30 has a configuration which is complementary to the second coupling end region 32.
In this exemplary embodiment, the first coupling end region 30 has a male configuration and the second coupling end region 32 has a female configuration.

1000591 As can be seen in FIG. I, the first coupling portion 20 has a circular cross section, though other cross sections may also be suitable, such as rectangular cross sections.

1000601 The second coupling portion 22 has a pair of outer surfaces 38a and 38b which are convergent toward the first coupling portion 20 and, in this example, has a triangular cross section as shown in the figures, particularly FIG. I. With such a cross-sectional shape, the second coupling portion 22, when received in the second passage 28, maintains the log connection 18 joined in substantially tight contact as the logs 14 contract over time.

1000611 The second coupling portion 22 has a first abutment surface 44a therdon to engage the upper inclined face 46a, when oriented relative to a first plane, on an end region 17a of the adjacent log 14. The second abutment 44b, as an alternative to the first abutment surface 44a, may engage the inclined face 46a, when oriented relative to a second plane, on the end region 17a of the adjacent log 14. Still further, the third abutment surface 42 is oriented to engage an inclined face 46b on an adjacent log in the second log 14 connection as shown in FIGS. 5 and 6:

1000621 Thus, one exemplary embodiment is shown in FIGS. 5 and 6 and, with reference to FIGS. 4 and 9 is provided which shows the use of a number of the. coupling devices 10 in a log corner construction.
In this example, the log construction includes a first group of logs forming a first side 64 of the corner construction and a second group of logs forming a second side 66 of the comer construction. The corner CC-CS/CDA

construction 68 is thus formed of a stack of log connections 18 wherein each log connection 18 includes one log from each of the first and second groups 64 and 66 as shown in FIGS.
4, 5, 6 and 9. To form the corner construction 68 each of the logs 14 of the first group 64 has a first access paths 25a extending from an upper boundary 25b to a lower boundary 25c thereof as shown in FIG. 4, the first access path 25a of the first group 64 being co-linear so to form a single aligned first path through the first group (FIG. 5).

Correspondingly, each of the logs of the second group 66 has a second access-path 24a extending from an upper boundary 24b to a lower boundary 24c thereof as shown in FIGS. 4, 5 and 9 wherein the second access paths 24a are co-linear so as to forma second path through the second group 66 Furthermore, each log of the first and second groups, 64 and 66, have a first log dimension "A"
and either a lower end'region 17a or an upper end region 17b respectively (FIGS. 4 and 9) with a first interface surface 70 located parallel to, and open to, first or second access paths 25a or 24a therein: The first interface 70 of first log group 64 is configured for engaging a second interface surface 72 belonging to second log group 66.
Similarly, the first interface 70 of second log group 66 is configured for engaging a second interface surface 72 belonging to first log group 64. Also, as shown in FIGS. 4, 5 and 9, each of the logs 14 includes a third interface surface 74 for engaging a corresponding third interface surface 74 of the horizontally adjacent log. Each of the logs of the first group 64 have a first cavity 28 extending from its upper or lower boundary 28b or 28c along, and open to, its second interface surface 72 and terminating near its third interface surface 74. Similarly, each of the logs 14 of the second group 66 have a second cavity 29 extending from its upper or lower boundary 29b or 29c along, and open to, its second interface surface 72 and terminating near its third interface surface 74.

[000631 According to the abovementioned example, for maintaining, the logs 14 of first and second log groups 64 and 66 in communication, first and second groups of coupling units or devices 52 and 54 for joining the log connections 18 together to form the corner construction 68 are provided. The first and second groups of coupling devices 52 and 54 each comprise at least one coupling device 10 (FIGS. 4, 5, 6 and 9). The coupling device 10 includes the first coupling portion 20 with a longitudinal dimension approximating the first dimension, "A". The second coupling portion 22 extends laterally outwardly from the first coupling portion 20 with a span, "D", substantially parallel with the longitudinal dimension and approximating the second dimension, "B I" or "B2" (FIG. 4). The first group of coupling units 52 forms a substantially continuous stack of first coupling portions 20 extending through the aligned first access paths 25a and forms a set of spaced second coupling portions 22, each extending from the first access path 25a and into the first cavity 28, with adjacent second coupling portion 22 being separated by the lower end region 17a of a corresponding log 14. Similarly, the second group of coupling units 54 forms a substantially continuous stack of first coupling portions 20 extending through the aligned second access paths 24a so as to form a set of spaced second coupling portions 22, each extending from the second access path 24a and into the second cavity 29, with the adjacent second coupling portions 22 being separated by the upper end region l7b of a corresponding log 14 as is shown in FIGS. 5 and 6. Thus, by way of the abovementioned example, a corner log connection is provided.

1000641 Furthermore, by way of an exemplary method, log construction may be formed as follows.
First, at least two logs 14 are provided, with each log 14 having the first log dimension "A" and with a cut end region 17a having the dimension "B I ". The other log has corresponding upper end cut region l 7b having dimension "B2" and shaped to form the log connection 18. In at least one of the logs 14, the first passage 24 extends through the first log dimension "A" and, in at least the other of the logs, the second passage 28 extends through the dimension "B I" or "B2" of the lower 17a or upper 17b cut end regions.
1000651 The coupling device 10 is then provided to form or affix the log connection 18 as shown in FIGS. 4, 5 and 6; The device 10 includes first coupling portion 20 with length "C" approximating the first log dimension "A" and the second coupling portion 22 extending laterally outwardly from the first coupling portion 20 with length "D" approximating the second log dimension "B 1" or "B2", the central passage 34 extending through the first coupling portion 20 and bounded by the pair of end regions 30 and 32, each of which being in communication with the central passage 34 and configured for complementary engagement with an end region of a neighboring coupling device 10 for forming the stack or columns 52 and 54 therewith. The second coupling portion 22 has an end section with first and second abutment surfaces 44a and 44b formed thereon. The first abutment surface 44a is oriented according to the upper inclined surface 46a and the second abutment surface 44b is oriented according to the corresponding upper inclined surface .._.... 46a on and adjacent log 14.

1000661 The coupling device 10 is then installed with the first coupling portion 20 extending through the first passage 24 and the second portion 22 extending through the second passage 28. The end section is then adjacent an inclined face 44a on the log lower end region 17a and then either the first abutment surface 44a or the second abutment surface 44b is engaged with the upper inclined surface 46a according to the orientation of the upper inclined surface 46a relative the planes..

1000671 In certain embodiments, a pair of retaining members, such as the nut 58, through bolt holder 62 or similar device, are provided for placement on opposite sides of the log connection. The fastener 36 is installed through the central passage 34 and coupled to each of the retaining members 62 and 58. In this .regard, the stack 52 or 54 of a plurality of devices and thus logs 14 may be vertically comptessed and substantially maintained in a desired position.

1000681 The device 10, in another exemplary embodiment, may also be used in a comer construction 68 embodiment having an upright corner member 80, as shown, for example, in FIGS.
I I and 12. In such a construction, the logs 14 are provided with lateral dimensions substantially as described above and at "A"
of FIG. 4 wherein each log has a lateral log dimension defined by an upper boundary 82 and a lower boundary 84. As shown in FIG. 12 and particularly in FIG. 11, each log 14 has at least one end region with a first interface surface 70. In some instances it may be desirable to also have a first interface 70 located at both end regions of the log 14. The first interface surface 70 is provided so as to be capable of complementarily mating with a second interface surface 72 located on the upright corner member 80 in an abutting relationship. Formed within the first interface surface 70, near the end region of the log 14, is a first access path 24a (FIG. 11) which is open on one side thereof to the first interface surface 70 and extends from the upper boundary 82 of the log to the lower boundary 84. In the upright corner member 80, a second access path 25a, and in some exemplary embodiments, a third access path 25d are formed along the length of the upright corner member 80 and are open to the second and third interface surfaces 72 and 74, respectively.

[00069) The device 10, as substantially described above and shown particularly in FIGS l and 2, has a .. . .........................
first coupling portion 20 configured to be complimentarily received in the first access 24a and a second coupling portion 22 is configured to be received in either the second access path 25a or the third access path 25d as shown in FIGS. I I and 12. Furthermore, shown in FIGS. 11 and 12, the device 10, has complementary first and second end coupling regions 30 and 32 provided for coupling two or more like neighboring devices 10 wherein 30 is received with 32 as shown with particular reference to FIG. 12. In this case, the device 10, if desired, may be provided with a coupling portion which with a dimension D
which is longer than that shown in figure 1, and may approach the size of dimension C of coupling portion 20, while providing accommodation for end regions 30, 32 for interconnection between adjacent. devices 10. Further, in some cases, the end regions 30, 32 may not be required in cases where the devices 10 need not be interconnected.

1000701 Having now substantially described parts the corner construction 68, in the execution of this exemplary corner construction 68 using the device 10, the first interface surface 70 of a first log 76 is abutted to the second interface surface 72 of the upright corner member 80 as is shown in FIG. I I such that the first access path 24a and the second access path 25a align. Also shown in FIG. 11, in some embodiments, the first interface surface 70 of a second log 78 may be similarly abutted to the third interface surface 74 of the upright corner member 80 such the first access path 24a of the second log 78 and the third access path 25d align. The alignment of the first access paths 24a with the second and third access paths 25a and 25d respectively, allows for the insertion of the device 10 so as to the couple the logs 76 and 78 respectively to the upright corner member 80 and substantially maintain them in a desired position as show in FIGS. I I and 12.

1000711 Particularly in FIG. 12, the interaction of the logs 14, the comer member 80 and a plurality of like devices 10 is shown. The first coupling portion 20 is received in the first access path 24a and the second coupling portion 22 is received in either the second or third access path 25a or 25d. The logs 14, may in certain embodiments, such as that shown in FIG. 12 may be provided such that the upper boundary 82 of the log 14 in a lower log row 48 is shaped for complementary engagement with the lower boundary 84 a log 14 of a relative upper log row 50. Thus the upper and lower boundaries 82 and 84 of each log have complementary interconnecting surfaces so as to interconnectingly mate with a relative upper log 50 or a relative lower log 48. In this case, a plurality of devices 10 may be coupled to each other and received in the first, second and third access paths 24a, 25a and 25d respectively as described above so as to form the corner construction 68 of a stacked log wall.

1000721 Although not shown in FIGS. I I and 12, a rod or fastening member 36 may be provided through the central passage 34 in this arrangement or a similar corner construction 68 so as to connect a plurality of like devices 10 substantially as describes with respect to other embodiments as described above and shown in FIG. 8.

1000731 Those of skill in the art will recognize certain modifications, permutations, additions and sub-.
combinations thereof of parts noted herein. While the coupling device 10 for use in log construction to maintain a corner of stacked logs 14 in a desired position is described for what are presently considered the exemplary embodiments, the invention is not so limited. To the contrary, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the following claims is to be accorded the broadest interpretation so as to encompass.
all such modifications and equivalent structures and functions.

Claims

1. A coupling device for use in a log construction involving a plurality of stacked logs, each log having a first lateral log dimension, each log having an end region which is shaped to form a log connection with an adjacent log, the end region having a second reduced lateral log dimension, the device including a first coupling portion with a central longitudinal axis and a longitudinal first span approximating the first log dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a second span parallel with the central longitudinal axis approximating the second log dimension, the first coupling portion configured to extend through a first passage extending through the first log dimension of one log, the second coupling portion configured to extend through a second passage extending through the second log dimension of an adjacent log to form a first log connection, the first coupling portion including a pair of end coupling regions and a central passage extending therebetween and open to the pair of end coupling regions, each end region being configured for complementary engagement with an opposing end coupling region of a neighboring coupling device when forming a second log connection.

2. A device as defined in claim 1, the first coupling portion having a circular cross section.

3. A device as defined in claim 2, the second coupling portion having a pair of outer surfaces which are convergent toward the first coupling portion.

4. A device as defined in claim 3, the second coupling portion having a trapezoidal or a triangular cross section.

5. A device as defined in claim 4, the second coupling portion having a first abutment surface thereon to engage an inclined face, when oriented relative to a first plane, on the end region of the adjacent log.

6. A device as defined in claim 5, the second coupling portion having a second abutment surface thereon, as an alternative to the first abutment surface, to engage the inclined face, when oriented relative to a second plane, on the end region of the adjacent log.

7. A device as defined in claim 6, the second coupling portion having a third abutment surface opposite the first and second abutment surfaces, the third abutment surface oriented to engage an inclined face on an adjacent log in the second log connection.

8. A device as defined in claim 6, the first coupling end region having a configuration which is complementary to the second coupling end region.

9. A device as defined in claim 5, the first coupling end region having a male configuration or a female configuration.

10. A log construction comprising a plurality of stacked logs, each log having a first log dimension, each log having an end region which is shaped, to form a log connection with an adjacent log, the end region having a second log dimension, a coupling device including a first coupling portion with a length approximating the first log dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a length approximating the second log dimension, the first coupling portion configured to extend through a first passage extending through the first log dimension of the first log, the second coupling portion configured to extend through a second passage extending through the second log dimension of the second log to from a first log connection, the first coupling portion including a pair of end coupling regions and a central passage extending therebetween and open to the pair of end coupling regions to receive a fastener therein, each end coupling region being configured for complementary engagement with an end region of a neighboring coupling device for forming a stack therewith.

11. The log construction as defined in claim 10, the first coupling portion having a circular cross section.

12. The log construction as defined in claim 11, the second coupling portion having a pair of outer surfaces which are convergent toward the first coupling portion.

13. The log construction as defined in claim 12, the second coupling portion having a trapezoidal or a triangular cross section.

14. The log construction as defined in claim 13, the second coupling portion having a first abutment surface thereon to engage an inclined face, when oriented relative to a first plane, on the end region of the adjacent log.

15. The log construction as defined in claim 14, the second coupling portion having a second abutment surface thereon, as an alternative to the first abutment surface, to engage the inclined face, when oriented relative to a second plane, on the end region of the adjacent log.

16. The log construction as defined in claim 15, the second coupling portion having a third abutment surface opposite the first and second abutment surfaces, the third abutment surface oriented to engage an inclined face on an adjacent log in a second log connection.

17. The log construction as defined in claim 16, the first coupling end region having a configuration which is complementary to the second coupling end region.

18. The log construction as defined in claim 17, wherein the first coupling end region has a male configuration or a female configuration.

19. A method of forming a log connection comprising providing a pair of logs, each with a first log dimension and an end region which is shaped to form a complementary log connection with the other log formed along a first pair of longitudinal interface surfaces generally inline with a longitudinal axis of each log and at least a second pair of lateral interface surfaces generally perpendicular to the longitudinal axis of one of the logs, providing a first passage through a first of the logs with openings on opposite sides thereof and, with the first passage to be adjacent and open to the second pair of lateral interface surfaces, providing a second passage in the end region of a second of the logs with openings on opposite sides of the end region, with the second passage to be adjacent and open to the second pair of lateral interface surfaces, engaging the end regions of the logs to form the log connection to form the first and second interface surfaces, with one of the second openings terminating at the first interface surfaces, installing a coupling device with first and second coupling portions respectively extending into the first and second passages for joining the logs together in the log connection, orienting a first coupling portion so that it extends through the first passage and is in communication with the first openings and a second coupling portion extending laterally outwardly from the first coupling portion and through the second interface surfaces with one end of the second coupling portion terminating at or near the first interface surfaces.

20. A method as defined in claim 19, further comprising the step of providing the second passage and the second coupling portion with complementary wedge shaped cross sections.

21. A method as defined in claim 20, further comprising providing the first passage and the first coupling portion with complementary circular cross sections.

22. A method as defined in claim 21, further comprising providing the first coupling portion with a central passage and extending a fastener through the central passage to anchor the log connection.

23. A method as defined in claim 21, further comprising providing the first coupling portion with complementary end regions, each for interconnecting with an end region of a neighboring first coupling portion to form a stack.

24. A log corner construction comprising a first group of logs forming a first side of the corner construction and a second group of logs forming a second side of the corner construction, the corner construction being formed of a stack of log connections, each log connection including one log from each of the first and second groups, a. each of the logs of the first group having a first access path extending from an upper boundary to a lower boundary thereof, the first access paths of the first group being co-linear so to form a single aligned first path through the first group, each of the logs of the second group having a second access path extending from an upper boundary to a lower boundary thereof, the second access paths being co-linear so as to form a second path through the second group, b. each log of the first and second groups having a first log dimension and an end region with a first interface surface located parallel to, and open to, a corresponding first or second passage therein, c. each log of the first and second groups having a second interface surface to engage a corresponding first interface surface of an adjacent log of the first and second groups, and a third interface surface to engage a corresponding third interface surface of the adjacent log, d. each of the logs of the first group having a first cavity extending from its upper or lower boundary along, and open to, its second interface surface and terminating near its third interface surface; each of the logs of the second group having a second cavity extending from its upper or lower boundary along, and open to, its second interface surface and terminating near its third interface surface;

e. first and second groups of coupling devices for joining the log connections together to form the corner construction, each coupling device including a first coupling portion with a longitudinal dimension approximating the first dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a span substantially parallel with the longitudinal dimension and approximating the second dimension, the first group of coupling devices forming a substantially continuous stack of first coupling portions extending through the aligned first passages and forming a set of spaced second coupling portions, each extending from the first passage and into the first cavity, with adjacent second portion being separated by the end region of a corresponding log, the second group of coupling devices forming a substantially continuous stack of first coupling portions extending through the aligned second passages and forming a set of spaced second coupling portions, each extending from the second passage and into the second cavity, with adjacent second portion being separated by the end region of a corresponding log.

25. A method for forming a log construction comprising (a) providing at least two logs, (b) providing each log with a first log dimension and an end region which is shaped to form a log connection with the other log, with the end region having a second log dimension, (c) providing, in at least one of the logs, a first passage extending through the first log dimension and, in at least the other of the logs, a second passage extending through the second log dimension, (d) providing a coupling device to form the log connection, the device including a first coupling portion with a length approximating the first log dimension and a second coupling portion extending laterally outwardly from the first coupling portion with a length approximating the second log dimension, a central passage extending through the first coupling portion and bounded by a pair of end regions, each of which being in communication with the central passage and configured for complementary engagement with an end region of a neighboring coupling device for forming a stack therewith, the second coupling portion having an end section with first and second abutment surfaces formed thereon, the first abutment surface oriented according to a first plane and the second abutment surface oriented according to a second plane, (e) installing the coupling device with the first coupling portion extending through the first passage and the second portion extending through the second passage;

(f) locating the end section adjacent an inclined face on the end region, and engaging either the first abutment surface or the second abutment surface according to the orientation of the inclined face relative to the first and second planes, (g) providing a pair of retaining members for placement on opposite sides of the log connection, and (h) installing a fastener through the central passage and coupling the fastener to each of the retaining members.

26. A log corner construction comprising at least one log having an end region with a first interface surface located thereon shaped for abutting a second interface surface located on a portion of an upright corner member;

- the log being maintained in communication with the corner member by a coupling device;
- the log having a first lateral log dimension defined by an upper boundary and a lower boundary thereof;

- the coupling device including a first coupling portion with a central longitudinal axis and a longitudinal first span approximating the first log dimension and a second coupling portion extending laterally outwardly from the first coupling portion;

- the first coupling portion configured to extend through a first access path extending from the upper boundary to the lower boundary of the log and includes a pair of end coupling regions adapted for complementary engagement with an opposing end of a like neighboring device;

- the first access path being open along one side to the first interface surface;

- the corner member having at least a second access path open to the second interface surface formed therein substantially along its length in at least one side;

- the first access path configured for receiving the first coupling region therein and the second access path configured for receiving the second coupling portion therein.

27. The log corner construction as defined in claim 26, the first coupling portion having a circular cross section.

28. The log corner construction as defined in claim 27, the second coupling portion having a pair of outer surfaces which are convergent toward the first coupling portion.

29. The log corner construction as defined in claim 26, the first coupling region having a central passage extending between and open to the pair of end coupling regions.

30. The log corner construction as defined in claim 29, the central passage being dimensioned for receiving therethrough a rod for connecting a plurality of like devices.

31. The log corner construction as defined in claim 26, wherein more than one log is provided so as to form a plurality of stacked logs stackable for forming a wall.

32. The log corner construction as defined in claim 31, wherein the upper and lower boundaries of each log have complementary lateral interconnecting surfaces so as to interconnectingly mate with a relative upper log or a relative lower log

33. The log corner construction as defined in claim 26, wherein the corner member includes a third access path open to a third interface surface formed therein along its length in another side;

- the third interface surface for communicating with the first interface surface of a second log;

- the third access path for receiving therein the second coupling portion of a second coupling device so as to form a linking of at least two logs.

34. The log corner construction as defined in claim 33, wherein more than one log is provided so as to form a plurality of stacked logs stackable for forming a plurality of walls.

35. The log corner construction as defined in claim 34, wherein the upper and lower boundaries of each log have complementary lateral interconnecting surfaces so as to interconnectingly mate with a relative upper log or a relative lower log.