System of building modular log homes
A substantially pre-assembled modular log home provides a banding support defined by a front, a rear, and a pair of side support members, and a plurality of floor joists secured to the support members. A sub-floor is secured to the banding support. The log home is made from stacked structural members that form a front, a rear, and a pair of side-walls that are each secured to the sub-floor. Each structural member has a rectangular elongate body. A pair of projections are disposed along the top surface of each member. A pair of grooves extend along the bottom surface of each member. The pair of grooves on a lower member engage the pair of projections of a vertically adjacent structural member to align two members in the stack. Fasteners secure the members together in each stack. A roof, having an assembly of rafters, is secured to the top of the log home.
1. Field of the Invention
The present invention relates to modular log homes and more particularly to a log home that is made from real wood logs and is substantially prefabricated and pre-assembled in a factory and then delivered to a building site.
2. Description of the Related Art
Log homes have been in existence and common use for centuries. Originally, log cabins were built in wooded areas where there was a large supply of wooden logs from trees. Because log homes are still considered versatile, energy efficient structures, many modern improvements have been made to the log home. The majority of the improvements attempt to minimize the amount of labor involved in erecting a log home while improving the overall integrity of the structure. The following patent documents provide examples of some modern log homes.
Japanese Patent No. 2003-119930 published on Apr. 23, 2003 discloses a log cabin. The log cabin is a common log cabin made from stacked wooden logs. The wooden logs provide notches in the ends of the logs for securely fitting the stacked logs together.
Japanese Patent No. 8049321 published on Feb. 2, 1996 discloses an assembly type log house. The log house provides a flat base panel with a plurality of holes for receiving support rods. Walls are erected on the flat base plate. The walls are made from a laminated material.
Japanese Patent No. 5079097 published on Mar. 30, 1993 discloses a log house-type building formed with a supporting framework structure. The framework includes a roof and is made by stretching a back plate across a number of columns of the framework. Log members are then stacked to form wall members. The log members are stacked on top of a foundation.
French Patent No. 2 588 584 published on Apr. 17, 1987 discloses timber houses made from prefabricated frames. Novel shaped boards are then secured to the frames to create the exterior walls of the houses.
U.S. Pat. No. 6,418,680 issued to Calkins discloses a log panel system for constructing buildings using prefabricated panels made of full sized logs. The log panels are made at a factory and assembled at the building site using fasteners. The logs have a tongue on the top surface and a groove on the bottom surface so that the logs can fit securely on top of each other. Fasteners are then driven down through adjoining logs. A sealant is disposed between the connecting logs.
U.S. Pat. No. 6,363,672 issued to Baker discloses a plurality of horizontal logs extending between vertical log posts. The horizontal logs are secured to the vertical posts by a spline. Fasteners may be driven into the tops of the logs for a more secure attachment.
U.S. Pat. No. 6,295,778 issued to Burt discloses a modular building comprised of a plurality of horizontally oriented, extruded wall members stacked to form wall panels. The panels are connected by fasteners. The building may also include a banding support, a roof and an interior wall.
U.S. Pat. No. 6,035,583 issued to Papke discloses a building structure made from a one piece, extruded, cut-to-length structure. The structure has integral side walls, roof and floor. The exterior of the structure is designed to simulate the appearance of a wood frame construction.
U.S. Pat. No. 5,881,515 issued to George discloses a plurality of modular log members for creating concatenated structures. The modular members may be parallel, offset, overlapping, or interconnected in relation to each other. Each modular member has a plurality of holes extending through their planar top and bottom surfaces. The holes receive connectors and may have different diameters. Varying types of connectors may be used.
U.S. Pat. No. 5,718,091 issued to Sellers et al. discloses a log cabin made from prefabricated, tapered logs. Each log has a large notch that fits over the large end of another log, and a small notch that fits over the small end of the other log. The logs are stacked so that the large end of any given log lies between the small end of a log immediately above the log and the small end of the log immediately below the given log.
U.S. Pat. No. 5,608,997 issued to Mahowich discloses a vertical log cabin. A foundation is provided having a floor plate disposed thereon. Vertically oriented logs are stacked next to one another on top of the floor plate. Each log has slots on two opposing side portions. Each log has a L-shaped notch on both the top and the bottom end. The L-shaped notches connect to the floor plate and the ceiling plate. A plurality of plates is positioned in the slots of the vertical logs to form wall structures.
U.S. Pat. No. 5,058,343 issued to Nipko discloses a modular structure having an outer wall framing of horizontal logs. The logs are interlocking and bolted to a rigid floor assembly. The logs are glued and lag-bolted together. Logs may be spliced end to end to make longer logs. A number of the logs provide a tension and shear support means, in the form of steel strapping, to permit lifting of the modules.
U.S. Pat. No. 4,947,615 issued to Peacock discloses a modular building having a frame for supporting panels on the uprights of the frame.
U.S. Pat. No. 4,510,724 issued to Magnuson discloses a building structure made from alternatingly stacked, tapered timbers having a notching system for corner joinder of the stacked timbers.
U.S. Pat. No. 4,463,532 issued to Faw discloses a prefabricated log wall unit made from stacked logs. The logs are secured to one another by lag bolts. Vertical studs are secured to the ends of the stacked logs and insulation is sprayed between the studs. A plurality of wall units are vertically arranged in abutting relationship on a conventional building foundation to produce a log structure. Wall units are connected by lag bolts.
U.S. patent application No. 2003/0054189 published for Morgenstern discloses a building made from stacked structural elements. A cushion layer and an insulating layer are disposed between each stacked element. The exterior layers of the structural elements are a fabricated cast concrete material and have an exterior surface that simulates the appearance of a log cabin.
U.S. patent application No. 2002/0088200 published to Chambers discloses a building having stacked, tapered logs. Notches are cut into the ends of logs for fitting the logs to one another.
U.S. patent application No. 2002/0046519 to Houseal discloses a log structure comprising a stack of logs with a support column extending vertically through the logs for preventing the logs from moving downward due to shrinkage. Each support column comprises a vertical stack of log support pipes having a plate at each end of the support element.
A problem with the structures disclosed above is that most of them require a great deal of on-site construction and labor. In the areas where log homes are very popular, the weather tends to limit the amount of building time available in a given year. Another disadvantage is that many of those structures do not use real wood logs, but instead use building panels that simulate the appearance of a log home. Therefore, what is needed is a log home that may be substantially prefabricated and pre-assembled prior to arrival at the building site, while still using real wood logs.
None of the above inventions and patents, taken either singly or in combination, is seen to describe the instant invention as claimed. Thus a system of building modular log homes solving the aforementioned problems is desired.
SUMMARY OF THE INVENTIONThe system of building modular log homes provides a modular log home that is prefabricated and substantially pre-assembled prior to being delivered to the building location. The log homes are assembled in the controlled environment of a factory so that they are built in a more timely and cost effective manner. The log homes are approximately eighty-five percent complete when delivered to the building location. The log homes are created using real wood logs that are stacked to form the walls of the home.
According to one aspect of the present invention a modular log home comprises a generally rectangular banding support defined by a front support member, a rear support member, a pair of side support members, and a plurality of floor joists. Each floor joist has a front end secured to the front support member and a rear end secured to the rear support member. A sub-floor panel is disposed on top of the banding support. The main structure of the log home is made from a plurality of structural members that are horizontally oriented in vertical stacks. The stacks of structural members form a front wall, a rear wall and a pair of side walls that are each aligned with and secured to a side of the sub-floor panel.
Each of the structural members has a generally rectangular elongate body with a top surface, a bottom surface, a front surface, a rear surface, a first end and a second end. A pair of projections are disposed along the entire length of the top surface of each structural member. A pair of grooves extend along the entire length of the bottom surface of each structural member. The pair of grooves on a lower structural member engage the pair of projections of a vertically adjacent structural member to align two structural members in the stack. A plurality of fasteners are spaced at even intervals along each of the structural members for securing the structural members together in a stack. Additionally, a solid rod is placed through the stack of logs and bolted at the top and bottom of the rod for additional support. Each fastener is driven into a structural member and extends down through the member and into the vertically adjacent structural member directly below in the given stack.
A roof assembly is transported to the building site and secured to the top of the building using a crane. The roof assembly comprises a plurality of roof joists disposed on top of the stacked structural members. Each joist has a front end extending outwardly from the front wall and a rear end extending outwardly from the rear wall, at least two rafters, and a roof cover disposed on top of the rafters. Each of the rafters has a front member and a rear member. The front member and the rear member each have a lower portion and an upper portion that is hingedly connected to the lower portion. The lower portion of the front member and the rear member are secured to one of the roof joists. The upper portion of the front member and the rear member are secured to one another to form the peak of the roof. The roof assembly provides at least two rafters, one at each end of the building. The roof cover is then lifted and secured over the rafters.
Accordingly, it is a principal object of the invention to provide a modular log home made from real wood logs.
It is another object of the invention to provide a modular log home that may be substantially prefabricated and pre-assembled in the controlled environment of a factory and then delivered to a building site.
It is a further object of the invention to provide a roof assembly that may be easily transported to the building site and secured to the top of the log cabin.
Still another object of the invention is to provide materials and a method of building a log cabin that provides a secure building structure and prevents damage due to the effects of weather.
It is an object of the invention to provide improved elements and arrangements thereof for the purposes described which is inexpensive, dependable and fully effective in accomplishing its intended purposes.
These and other objects of the present invention will become readily apparent upon further review of the following specification and drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Similar reference characters denote corresponding features consistently throughout the attached drawings.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTSThe present invention provides a system for building modular log homes in a more timely and cost-effective manner. According to a certain aspect of the present invention, a system is provided for building a modular log home in the controlled environment of a factory. The materials of the log home are prefabricated and substantially pre-assembled prior to being delivered to a building site. The log homes are approximately 80-85% when they leave the factory.
The floor joists 30 extend across the banding support 14 from the front support member 28 to the rear support member 27 and are oriented parallel to the side support members 29. The joists 30 are preferably wooden 2×10″s and are spaced 16 inches apart along the length of the log home 10. Each floor joist 30 has an elongate body with a pair of ends 40. Each floor joist 30 is secured to the front support member 28 and the rear support member 27.
As shown in
Each support member 22 provides at least a pair of mating projections 58 that extend, parallel to one another, along the entire length of the top surface 50 of the support member 22. Each support member 22 also provides at least a pair of mating grooves 56 that extend, parallel to one another, along the entire length of the bottom surface 48 of the support member 22. The projections 58 and the grooves 56 allow vertically adjacent support members to be aligned and mated together when stacked to form the walls of the log home 10. The mating projections 58 of the support member 22 engage the mating grooves 56a of the vertically adjacent support member 22a that is positioned directly above the lower support member 22. The space between the mating grooves 56a of the vertically adjacent support member 22a is equivalent to the space between the mating projections 58 of the lower support member 22.
Once the horizontally oriented support members 22 are aligned and vertically stacked to form a wall they are secured in place by a plurality of fasteners 68(as shown in
In addition to the plurality of fasteners 68 a plurality of support rod 69 extends through the stack of support members 22 (shown in
As shown in
As shown in
According to another aspect of the preferred embodiments of the present invention, the modular log home 10 provides a layer of weather stripping 64 (shown in
The present modular log home 10 provides a roof assembly 12, shown in
The roof assembly 12 further comprises a plurality of rafters 82. The number of rafters 82 will vary depending on the length of the log home 10, but at a minimum the roof assembly will provide two rafters 82, one positioned above each side wall 18. As shown in
The roof assembly 12 is mounted to the log home 10 at the building site with the use of a crane. For easier transport of the rafters 82, the front rafter member 86 and the rear rafter member 88 are foldable about the center of each rafter member, as shown in
The roof assembly 12 further comprises a roof cover 84, shown in
According to another aspect of the preferred embodiments of the present invention, the modular log home 10 provides a metal flashing 102 that extends along the banding support 14 (as shown in
It is to be understood that the present invention is not limited to the embodiments described above, but encompasses any and all embodiments within the scope of the following claims.
Claims
1. A modular log home, comprising:
- a generally rectangular banding support defined by a front support member, a rear support member and a pair of side support members, and a plurality of floor joists, each floor joist having a front end secured to the front support member and a rear end secured to the rear support member;
- a sub-floor panel disposed on top of said banding support;
- a plurality of horizontally stacked structural members forming a front wall, a rear wall, and a pair of side walls, said structural members being stacked on top of said sub-floor panel, each of said structural members having a generally rectangular elongate body with a top surface, a bottom surface, a front surface, a rear surface, a first end and a second end, a pair of projections disposed along the top surface of each structural member, and a pair of grooves disposed along the bottom surface of each structural member;
- a plurality of fasteners spaced at even intervals along each of said structural members for securing said structural members together in a stack; and
- a roof assembly having a plurality of roof joists disposed on top of the stacked structural members, each joist having a front end extending outwardly from the front wall and a rear end extending outwardly from the rear wall, at least two rafters, and a roof cover disposed on top of the rafters, each of said rafters having a front member with an upper portion hingedly connected to a lower portion and a rear member with an upper portion hingedly connected to a lower portion, whereby the lower portion of the front member is secured to the front end of one of said joints, the lower portion of the rear members is secured to the rear end of the same joist and the upper portion of the front member is secured to the upper portion of the rear member to form a roof peak;
- whereby the structural members may be stacked and secured to one another on said banding support prior to being transported to a building site and said rafters and said roof cover may be transported and secured onto the modular log home at the building site.
2. The modular log home according to claim 1, wherein said front support member, rear support member and side support members are double banded comprising two boards of wood with a plywood gusset fixed between the two boards.
3. The modular log home according to claim 1, wherein said stacked structural members comprise wood logs.
4. The modular log home according to claim 1, wherein the pair of side walls of said stacked structural members comprise a curved front surface and a generally flat rear surface.
5. The modular log home according to claim 1, wherein said floor joists are secured to the front support member and the rear support member by a joist hanger.
6. The modular log home according to claim 1, wherein said fasteners comprise threaded log fasteners.
7. The modular log home according to claim 1, further comprising a layer of weather stripping on each projection on said structural members.
8. The modular log home according to claim 1, further comprising a layer of sealant disposed along the top surface of said structural members between the pair of projections.
9. The modular log home according to claim 1, wherein the stacked structural members are mated together by aligning the projections of a first structural member with the grooves of a vertically adjacent structural member.
10. The modular log home according to claim 1, further comprising a metal flashing having a top end secured into the groove of the structural members positioned directly adjacent the sub-floor panel and a bottom end extending along the banding support to prevent water from penetrating between the stacked structural members and the sub-floor panel.
11. The modular log home according to claim 1, wherein said roof cover is made from a roof cover material selected from the group consisting of metal and fiber glass shingles.
12. The modular log home according to claim 1, further comprising at least one door assembly disposed along one of said walls, having door frame and a door secured to the door frame.
13. The modular log home according to claim 1, further comprising at least one window assembly disposed along one of said walls, having a window frame and a window secured to the window frame.
14. The modular log home according to claim 1, further comprising dowel rods for securing horizontally adjacent structural members.
15. The modular log home according to claim 1, wherein the ends of the structural members forming the front wall and are arranged overlappingly with the ends of the structural members forming the side walls to form corner joints.
16. The modular log home according to claim 15, wherein the ends of the structural members forming the rear wall and the ends of the structural members forming the side walls are arranged flush forming corner butt joints.
17. The modular log home according to claim 16, further comprising a plurality of corner dowels disposed in each corner joint.
18. The modular log home according to claim 1, wherein said lower portion of said front member and said lower portion of said rear member are secured to the joist by securing a first pair of plywood gussets on each side of the front end of said joist and a second pair of plywood gussets on each side of the rear end of said joist and passing a first bolt through the first set plywood gussets and said lower portion of said front member and a second bolt through the second set of plywood gussets and the lower portion of said rear member.
19. A modular log home, comprising:
- a generally rectangular banding support defined by a front support member, a rear support member and a pair of side support members, and a plurality of floor joists, each floor joist having a front end secured to the front support member and a rear end secured to the rear support member; a sub-floor panel disposed on top of said banding support; a plurality of horizontally stacked structural members forming a front wall, a rear wall, and a pair of side walls, said structural members being stacked on top of said sub-floor panel, each of said structural members having a generally rectangular elongate body with a top surface, a bottom surface, a front surface, a rear surface, a first end and a second end, a pair of projections disposed along the top surface of each structural member, and a pair of grooves disposed along the bottom surface of each structural member; a plurality of fasteners spaced at even intervals along each of said structural members for securing said structural members together in a stack; a layer of sealant disposed along the top surface of said structural member between the pair of projections; a layer of weather stripping on each projection on said structural members; a metal flashing having a top end secured into the groove of the structural members positioned directly adjacent the sub-floor panel and a bottom end extending along the banding support to prevent water from penetrating between the stacked structural members and the sub-floor panel; and a roof assembly comprising a plurality of roof joists disposed on top of the stacked structural members, each joist having a front end extending outwardly from the front wall and a rear end extending outwardly from the rear wall, at least two rafters, and a roof cover disposed on top of the rafters, each of said rafters having a front member with an upper portion hingedly connected to a lower portion and a rear member with an upper portion hingedly connected to a lower portion, whereby the lower portion of the front member is secured to the front end of one of said joints, the lower portion of the rear members is secured to the rear end of the same joist and the upper portion of the front member is secured to the upper portion of the rear member to form a roof peak; whereby the structural members may be stacked and secured to one another on said banding support prior to being transported to a building site and said rafters and said roof cover may be transported and secured onto the modular log home at the building site.
20. The modular log home according to claim 19, wherein said stacked structural members comprise wood logs.
Type: Application
Filed: Dec 11, 2003
Publication Date: Jun 16, 2005
Inventors: Deborah Woksa (Nashville, TN), David Clark (Old Hickory, TN)
Application Number: 10/732,224