EP1913266A2 - Structural member joints - Google Patents

Structural member joints

Info

Publication number
EP1913266A2
EP1913266A2 EP06786944A EP06786944A EP1913266A2 EP 1913266 A2 EP1913266 A2 EP 1913266A2 EP 06786944 A EP06786944 A EP 06786944A EP 06786944 A EP06786944 A EP 06786944A EP 1913266 A2 EP1913266 A2 EP 1913266A2
Authority
EP
European Patent Office
Prior art keywords
sleeve
sleeves
members
hole
bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06786944A
Other languages
German (de)
French (fr)
Other versions
EP1913266A4 (en
Inventor
Richard W. Kauppila
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US11/189,040 external-priority patent/US7815391B2/en
Application filed by Individual filed Critical Individual
Publication of EP1913266A2 publication Critical patent/EP1913266A2/en
Publication of EP1913266A4 publication Critical patent/EP1913266A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/48—Dowels, i.e. members adapted to penetrate the surfaces of two parts and to take the shear stresses
    • E04B1/486—Shear dowels for wood
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2628—Interlocking connectors, e.g. with hooks or dovetails, added to the elongated wooden members
    • E04B2001/2636—Interlocking connectors, e.g. with hooks or dovetails, added to the elongated wooden members with connectors located in slots of the wooden members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2668—Connections specially adapted therefor for members with a round cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B15/00—Nails; Staples
    • F16B15/0023—Nail plates
    • F16B15/003—Nail plates with teeth cut out from the material of the plate

Definitions

  • This invention concerns joinery and more particularly joining one end of a member such as a timber or composite beam or log to the side of another member.
  • Such connections have heretofore been made by mortise and tenon joints or other joints involving shaping of the members themselves, by metal connectors, by lag screws or bolts, etc.
  • screw threads in wood or other soft material have insufficient holding power.
  • AU of these prior methods have disadvantages, primarily in the cost or time involved in making the joint due to the need to machine the wood or to install costly, complicated connectors or result in a joint of inadequate strength. Many such joints use components which are conspicuously exposed, to be unsightly.
  • the hole may have a smaller diameter clearance hole at its bottom to receive the protruding end of a bolt to be threaded into the nut, described below.
  • a third, slightly smaller diameter sleeve is driven into the first sleeve, driving out an array of recessed spike features formed around and along the first sleeve out to be set into the surrounding wood to securely anchor the first sleeve therein.
  • the third sleeve is left in position within the first sleeve to reinforce the same.
  • a hole is drilled through the side of the second member and the second sleeve, which is shorter than the first sleeve inserted therein, also having an array of spike features, formed therein, which are set with a tool driven into the third sleeve, which tool is then removed.
  • An end piece is inserted into the outside end of the through hole aligned with the second sleeve, and is attached to the opposite side of the second member as with screws.
  • Xn alternative j oint connection involves a connector including a flat plate having a transverse end piece attached thereto, the plate inserted into a slot machined into the
  • first member Bolts are inserted into holes drilled through the first member end and through aligned holes in the plate thereafter, secured with nuts threaded on the bolt ends, the drilled holes counter-bored to recess the bolt heads and nuts.
  • the integral transverse piece which may be curved to match a log surface, is seated against the second member and secured thereto with screws.
  • An end stabilizer is preferably used when wood members are to be joined.
  • An annular groove is machined into the end of a log or beam and a ring pressed there into.
  • the spikes can be formed by first cutting pointed end three sided tabs to a metal sheet to be formed into a sleeve.
  • the tab is then bent in to one side of the sheet to be angled out of the plane of the sheet with the pointed end pointing to the inside.
  • the end of each spike is reversely bent back so that this pointed tip points in the opposite direction.
  • the angled tab provides a cam surface for forcing the tip out and into the surrounding material.
  • Figure 1 is a partially sectional view of one end of a part of a wood member with a first sleeve tube installed in a drilled hole therein.
  • Figure 2 is a view of an intermediate segment of a second wood member with a sleeve installed therein with a separated tool shown for setting spikes in the tube.
  • Figure 3 is a partially exploded view of a second sleeve being installed in the first sleeve shown previously shown being installed in the first member in Figure 1.
  • Figure 4 is a partially exploded view of the two members shown in Figures 1 -3 being joined with a separated end piece being installed on the second member.
  • Figure 5 is a fragmentary sectional view of the two members to be joined in abutment, with the sleeves assembled, but with a locking bolt shown in an aligned preparatory to being inserted into the sleeves.
  • Figure 6 is the same view as Figure 5 but with the locking bolt fully tightened.
  • Figure 7 is a sectional view of two log members connected together at right angles using a connector according to another embodiment of the invention.
  • Figure 8 is an end view of one of the log members with the connector attached.
  • Figure 9 is a sectional view of a log member and a square beam connected together at right angles by a variation of the connector shown in Figure 7.
  • Figure 10 is an end view of the log member with connector attached.
  • Figure 11 is a sectional view of two log members connected at an acute angle to each other with a variation of the connector shown in Figures 7 and 9.
  • Figure 12 is a sectional view of two log members connected at an acute angle to each other with a variation of the connector shown in Figures 7 and 9.
  • Figure 13 is a partially exploded view of an end of a log member and a withdrawn hole saw used to cut an annular groove into the log end.
  • Figure 14 is an end view of the log end shown in Figure 13 with a ring stabilizer pressed therein.
  • Figure 15 Is a partially sectional view of the log end of Figure 13 and 14 with the stabilizer ring in place.
  • Figure 16 is a fragmentary partially sectional enlarged view of a metal plate used to form the spiked sleeves used in the connector shown in Figures 1-6.
  • Figure 17A is a fragmentary side view of the sheet section shown in Figure 16.
  • Figure 17B is an end view of the sheet section shown in Figure 17A.
  • Figure 18A is a side view of the sheet section with the tab bent up out of the plane of the sheet.
  • Figure 18B is an end view of the sheet section shown in Figure 18 A.
  • Figure 19A is a side view of the sheet section with the end of the tab bent outwardly.
  • Figure 19B is an end view of the sheet section shown in Figure 19 A.
  • an end 10 of a first wood member 12 such as a log, has the face 14 cut at an angle corresponding to the angle of a joint to be made with a second member 16 ( Figure 2).
  • Such members can be of wood, composite or other composition.
  • a first metal sleeve 18, preferably of steel which is galvanized or otherwise rust protected is pressed into the hole 19.
  • the sleeve 18 is longer than the hole 19 so that a substantial segment 20 thereof protrudes out of the hole 19.
  • An end plate 22 is affixed as by welding to the end of the sleeve 18 within the hole 19 to which is in turn attached a weld nut 24 aligned with the longitudinal axis of the sleeve 18.
  • a short clearance hole 21 allows the end of a bolt described below to protrude through the nut 24.
  • An array of circumferential sets of formed spike features 26 is arranged distributed along the length of the sleeve 18, with successive sets rotated out of alignment with the prior set. These features are punched or otherwise formed into the side wall of the sleeve 18 so as to be recessed below the surface of the sleeve 18 to allow unimpeded insertion into the drilled hole 18.
  • the second wood member 16 has a through hole 27 drilled through the sides 28 thereof at an angle normal to the angle of the face 14 of the first member. A shorter angled end second metal sleeve 30 is inserted in the drilled hole 26.
  • the sleeve 30 also has an array of sets of spikes 32 punched or otherwise formed into the side wall of the sleeve 30, distributed along the length of the sleeve 30 in similar fashion to the first sleeve 18.
  • ' ⁇ hlt$ffi%ar ⁇ !a" ⁇ y% ij lol 34 driven into the inside of the sleeve 30, with a chamfered end 35 forcing the pointed tips of the spikes 32 out and into the surrounding wood to lock the sleeve 30 in the hole 26.
  • the tool 34 is then removed.
  • a third liner sleeve 36 is inserted into the previously inserted sleeve 18, of a diameter slidably fit within the sleeve 18.
  • FIG. 4 shows the members 12, 16 positioned with the respective first, second and third sleeves 18, 30, 36 in alignment, with the second sleeve 30 of an inside diameter sized to slidably receive the protruding end of the first sleeve 18 and allow the members 12, 16 to be brought into abutment with each other the end 10 of the first member 12 against one side of the second member 16, as seen in Figure 5.
  • An end piece 40 is installed in the outer end of the hole 26 in the second member 16, with a truncated sleeve portion 42 received therein and a flange 44 overlying the adjacent surfaces of the side 28A. Screws 46 are used to secure the end piece 40 in place.
  • a clearance hole 48 is formed in an end wall 50 of the end piece 40.
  • a locking bolt 52 is inserted through the hole 48 and sleeves 18, 30, 36 and threadably engaged with the nut 24, and advanced therein to draw the head 54 against the end wall 50 and tightened to pull the remembers 12, 16 together, as seen in Figure 6.
  • the large number of spikes 26, 32 distributed along the sleeves 18, 30 creates a holding power which is greater than can be obtained with screw threads to create a strong joint in members of wood or other soft material.
  • connector 56 is utilized including an anchoring plate 58 and a curved cross piece 60 integral therewith extending across an outer end thereof, each having a pattern of through holes 62, 64 formed therein.
  • the anchor plate 58 is received in a slot 66 machined into the end of a first wood member 68.
  • a series of bolts 70 pass through the holes 62 in the plate 58 and align holes 72 through the first wood member.
  • Counter bores 74 accommodate the bolt heads 74 and nuts 76 to positively secure the plate 58 in the slot 66.
  • the curved cross piece 60 is recessed into a curved space 78 machined into the end of the first member.
  • FIG. 11 shows an angled joint in which a first log member 88 is connected at an angle to a second member 90 using a concavely curved cross piece 92 of another formed connector 94 attached at an angle to the anchor plate 96.
  • Figure 13 shows a step in an end reinforcement method for a log 98 in which a hole saw 100 is used to cut an annular groove 102.
  • a steel metal ring 104 (preferably of steel) is pressed into the groove 102 serving to prevent splitting, etc. ( Figures 14, 15). This can be used in conjunction with the joints described above.
  • Figures 16-19B show details of the spikes 26 and 32.
  • the spike 26 outline is cut as by punching or laser cutting, with a pointed shape 106 at the end, as seen in Figures 16, 17 A, 17B.
  • the spike-tabs 26 are bent in towards what will be the inside of the sleeve 18, ( Figures 18A, 18B) along the connected side of the tab-spike 26. That is, the tab- spikes 26 can be formed in steel sheet stock prior to forming the sleeve 18, with the sheet rolled and welded to form the sleeve 18.
  • each spike is bent down to be pointed down towards the other side of the sheet as seen in Figure 19 A, 19.
  • the sloping backside 108 provides a camming surface recessed within the sleeve 18 for engagement by the third liner sleeve 36 to force the sharp tips 106 out and into the surrounding wood when the liner sleeve is driven into the sleeve 18.
  • the spikes 26 are initially completely recessed within the first sleeve 18 to allow the sleeve 18 to be slidably seated within the hole 19.
  • the spikes 32 can be made in the same way. The large number of spikes 26, 32 create considerable holding power in wood compared to screws.
  • Each set of spikes 26, 32 are arranged circumferentially with four or more in each set depending on the size of the sleeves. Succeeding sets are distributed axially down the length of the sleeve, each set rotated to be located between spikes in the previous set so as to not be aligned and thereby better distribute the stress imposed on the wood.
  • the connector and joint can be used with members of material other than woood such as plastic or composite which can be penetrated by the spikes as described.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

A connector and method for joining one end of a first member such as a wood log or beam to a side of a second member involving metal sleeves secured in aligned holes in a respective member with a protruding one of the sleeve slidable into the other sleeve. A bolt is threaded into an internally threaded element on the inner end of the sleeve in the first member and advanced to pull the members together. The sleeves are secured in the holes with spike features driven out into the surrounding material. Alternatively, a tee connector has a plate portion fitting into a slot extending through aligned holes in the plate and one end of the first member. A cross plate is held against the one side of the other member with thread fasteners.

Description

STRUCTURAL MEMBER JOINTS
Cross Reference to Related This application claims the benefit of U.S. provisional application No. 60/592,874 filed on July 23, 2004.
Background of the Invention This invention concerns joinery and more particularly joining one end of a member such as a timber or composite beam or log to the side of another member. Such connections have heretofore been made by mortise and tenon joints or other joints involving shaping of the members themselves, by metal connectors, by lag screws or bolts, etc. For large member joints, screw threads in wood or other soft material have insufficient holding power. AU of these prior methods have disadvantages, primarily in the cost or time involved in making the joint due to the need to machine the wood or to install costly, complicated connectors or result in a joint of inadequate strength. Many such joints use components which are conspicuously exposed, to be unsightly. It is the object of the present invention to provide a joint between such members using simpler connectors which can be quickly and easily installed, which creates a strong joint, and involves only minimal exposed components to have a neat appearance. Summary of the Invention The above recited object as well as other objects which will be appreciated by reading the following specification and claims are achieved by making a joint using first and second tubular metal sleeves inserted in respective holes in each member which holes can be easily and quickly made as by drilling. The first sleeve is inserted into a first hole drilled into the end of a first member with a substantial portion of its length remaining protruding out of the hole. The inserted end of the sleeve has an end wall with a weld nut attached thereto. The hole may have a smaller diameter clearance hole at its bottom to receive the protruding end of a bolt to be threaded into the nut, described below. A third, slightly smaller diameter sleeve is driven into the first sleeve, driving out an array of recessed spike features formed around and along the first sleeve out to be set into the surrounding wood to securely anchor the first sleeve therein. The third sleeve is left in position within the first sleeve to reinforce the same. A hole is drilled through the side of the second member and the second sleeve, which is shorter than the first sleeve inserted therein, also having an array of spike features, formed therein, which are set with a tool driven into the third sleeve, which tool is then removed. An end piece is inserted into the outside end of the through hole aligned with the second sleeve, and is attached to the opposite side of the second member as with screws. After assembling the members together by inserting the protruding first sleeve end into the second sleeve, a long bolt is inserted through the end piece and threaded into the weld nut at the inner end of the first sleeve, and tightened against an end wall of the end piece to complete the joint. Xn alternative j oint connection involves a connector including a flat plate having a transverse end piece attached thereto, the plate inserted into a slot machined into the
end of a first member. Bolts are inserted into holes drilled through the first member end and through aligned holes in the plate thereafter, secured with nuts threaded on the bolt ends, the drilled holes counter-bored to recess the bolt heads and nuts. The integral transverse piece, which may be curved to match a log surface, is seated against the second member and secured thereto with screws. An end stabilizer is preferably used when wood members are to be joined. An annular groove is machined into the end of a log or beam and a ring pressed there into. The spikes can be formed by first cutting pointed end three sided tabs to a metal sheet to be formed into a sleeve. The tab is then bent in to one side of the sheet to be angled out of the plane of the sheet with the pointed end pointing to the inside. Next, the end of each spike is reversely bent back so that this pointed tip points in the opposite direction. The angled tab provides a cam surface for forcing the tip out and into the surrounding material.
Description of the Drawings Figure 1 is a partially sectional view of one end of a part of a wood member with a first sleeve tube installed in a drilled hole therein. Figure 2 is a view of an intermediate segment of a second wood member with a sleeve installed therein with a separated tool shown for setting spikes in the tube. Figure 3 is a partially exploded view of a second sleeve being installed in the first sleeve shown previously shown being installed in the first member in Figure 1. Figure 4 is a partially exploded view of the two members shown in Figures 1 -3 being joined with a separated end piece being installed on the second member. Figure 5 is a fragmentary sectional view of the two members to be joined in abutment, with the sleeves assembled, but with a locking bolt shown in an aligned preparatory to being inserted into the sleeves. Figure 6 is the same view as Figure 5 but with the locking bolt fully tightened. Figure 7 is a sectional view of two log members connected together at right angles using a connector according to another embodiment of the invention. Figure 8 is an end view of one of the log members with the connector attached. Figure 9 is a sectional view of a log member and a square beam connected together at right angles by a variation of the connector shown in Figure 7. Figure 10 is an end view of the log member with connector attached. Figure 11 is a sectional view of two log members connected at an acute angle to each other with a variation of the connector shown in Figures 7 and 9. Figure 12 is a sectional view of two log members connected at an acute angle to each other with a variation of the connector shown in Figures 7 and 9. Figure 13 is a partially exploded view of an end of a log member and a withdrawn hole saw used to cut an annular groove into the log end. Figure 14 is an end view of the log end shown in Figure 13 with a ring stabilizer pressed therein. Figure 15 Is a partially sectional view of the log end of Figure 13 and 14 with the stabilizer ring in place. Figure 16 is a fragmentary partially sectional enlarged view of a metal plate used to form the spiked sleeves used in the connector shown in Figures 1-6. Figure 17A is a fragmentary side view of the sheet section shown in Figure 16. Figure 17B is an end view of the sheet section shown in Figure 17A. Figure 18A is a side view of the sheet section with the tab bent up out of the plane of the sheet. Figure 18B is an end view of the sheet section shown in Figure 18 A. Figure 19A is a side view of the sheet section with the end of the tab bent outwardly. Figure 19B is an end view of the sheet section shown in Figure 19 A.
Detailed Description In the following detailed description, certain specific terminology will be employed for the sake of clarity and a particular embodiment described in accordance with the requirements of 35 USC §112, but it is to be understood that the same is not intended to be limiting and should not be so construed inasmuch as the invention is capable of taking many forms and variations within the scope of the appended claims. Referring to the drawings, and particularly Figure 1, an end 10 of a first wood member 12 such as a log, has the face 14 cut at an angle corresponding to the angle of a joint to be made with a second member 16 (Figure 2). Such members can be of wood, composite or other composition. 11A' hole 1 &""isα(Irilledlntb"ihe W 14 in a direction aligned with the longitudinal axis of the member 10. A first metal sleeve 18, preferably of steel which is galvanized or otherwise rust protected is pressed into the hole 19. The sleeve 18 is longer than the hole 19 so that a substantial segment 20 thereof protrudes out of the hole 19. An end plate 22 is affixed as by welding to the end of the sleeve 18 within the hole 19 to which is in turn attached a weld nut 24 aligned with the longitudinal axis of the sleeve 18. A short clearance hole 21 allows the end of a bolt described below to protrude through the nut 24. An array of circumferential sets of formed spike features 26 is arranged distributed along the length of the sleeve 18, with successive sets rotated out of alignment with the prior set. These features are punched or otherwise formed into the side wall of the sleeve 18 so as to be recessed below the surface of the sleeve 18 to allow unimpeded insertion into the drilled hole 18. The second wood member 16 has a through hole 27 drilled through the sides 28 thereof at an angle normal to the angle of the face 14 of the first member. A shorter angled end second metal sleeve 30 is inserted in the drilled hole 26. The sleeve 30 also has an array of sets of spikes 32 punched or otherwise formed into the side wall of the sleeve 30, distributed along the length of the sleeve 30 in similar fashion to the first sleeve 18. 'τhlt$ffi%arσ !a"§y%ijlol 34 driven into the inside of the sleeve 30, with a chamfered end 35 forcing the pointed tips of the spikes 32 out and into the surrounding wood to lock the sleeve 30 in the hole 26. The tool 34 is then removed. Referring to Figure 3, a third liner sleeve 36 is inserted into the previously inserted sleeve 18, of a diameter slidably fit within the sleeve 18. A chamfered lead end 38 engages the spikes 26 forcing the pointed tips out into the surrounding wood to lock the sleeve 18 in place in the hole 19. The third liner sleeve 36 is left in place and is substantially coextensive with the sleeve 18 to strengthen the same. Figure 4 shows the members 12, 16 positioned with the respective first, second and third sleeves 18, 30, 36 in alignment, with the second sleeve 30 of an inside diameter sized to slidably receive the protruding end of the first sleeve 18 and allow the members 12, 16 to be brought into abutment with each other the end 10 of the first member 12 against one side of the second member 16, as seen in Figure 5. An end piece 40 is installed in the outer end of the hole 26 in the second member 16, with a truncated sleeve portion 42 received therein and a flange 44 overlying the adjacent surfaces of the side 28A. Screws 46 are used to secure the end piece 40 in place. A clearance hole 48 is formed in an end wall 50 of the end piece 40. A locking bolt 52 is inserted through the hole 48 and sleeves 18, 30, 36 and threadably engaged with the nut 24, and advanced therein to draw the head 54 against the end wall 50 and tightened to pull the remembers 12, 16 together, as seen in Figure 6. The large number of spikes 26, 32 distributed along the sleeves 18, 30 creates a holding power which is greater than can be obtained with screw threads to create a strong joint in members of wood or other soft material. connector 56 is utilized including an anchoring plate 58 and a curved cross piece 60 integral therewith extending across an outer end thereof, each having a pattern of through holes 62, 64 formed therein. As seen in Figure 12, the anchor plate 58 is received in a slot 66 machined into the end of a first wood member 68. A series of bolts 70 pass through the holes 62 in the plate 58 and align holes 72 through the first wood member. Counter bores 74 accommodate the bolt heads 74 and nuts 76 to positively secure the plate 58 in the slot 66. The curved cross piece 60 is recessed into a curved space 78 machined into the end of the first member. The outwardly concave shape allows a second wood member, log 80 to be received against the curved cross piece 60, secured thereto with lag screws 82. For square or rectangular timbers 86, a flat cross piece 84 can be used in a connector 85 to abut flat against the same (Figures 9, 10). Figure 11 shows an angled joint in which a first log member 88 is connected at an angle to a second member 90 using a concavely curved cross piece 92 of another formed connector 94 attached at an angle to the anchor plate 96. Figure 13 shows a step in an end reinforcement method for a log 98 in which a hole saw 100 is used to cut an annular groove 102. A steel metal ring 104, (preferably of steel) is pressed into the groove 102 serving to prevent splitting, etc. (Figures 14, 15). This can be used in conjunction with the joints described above. Figures 16-19B show details of the spikes 26 and 32. the spike 26 outline is cut as by punching or laser cutting, with a pointed shape 106 at the end, as seen in Figures 16, 17 A, 17B. Next, the spike-tabs 26 are bent in towards what will be the inside of the sleeve 18, (Figures 18A, 18B) along the connected side of the tab-spike 26. That is, the tab- spikes 26 can be formed in steel sheet stock prior to forming the sleeve 18, with the sheet rolled and welded to form the sleeve 18. Finally, the pointed end of each spike is bent down to be pointed down towards the other side of the sheet as seen in Figure 19 A, 19. Thus, the sloping backside 108 provides a camming surface recessed within the sleeve 18 for engagement by the third liner sleeve 36 to force the sharp tips 106 out and into the surrounding wood when the liner sleeve is driven into the sleeve 18. The spikes 26 are initially completely recessed within the first sleeve 18 to allow the sleeve 18 to be slidably seated within the hole 19. The spikes 32 can be made in the same way. The large number of spikes 26, 32 create considerable holding power in wood compared to screws. Each set of spikes 26, 32 are arranged circumferentially with four or more in each set depending on the size of the sleeves. Succeeding sets are distributed axially down the length of the sleeve, each set rotated to be located between spikes in the previous set so as to not be aligned and thereby better distribute the stress imposed on the wood. The connector and joint can be used with members of material other than woood such as plastic or composite which can be penetrated by the spikes as described.

Claims

cessi 1. Aj oint between two members in a position with one end of a first member against the side of a second member comprising a first sleeve secured within a hole extending in from said one end of said first member; a second sleeve secured in a hole extending through said second member, said sleeves overlapping and slidably interfit with each other with said members in said position against each other; an internally threaded element secured to an inmost end of said first sleeve in said hole; and a locking bolt extending through both of said sleeves and threaded into said internally threaded element.
2. The joint according to claim 1 wherein each of said sleeves are secured in their respective associated holes by penetrating spike features on said sleeves penetrating radially into portions of said wood members surrounding said holes.
3. The j oint according to claim 2 wherein said first sleeve has a portion protruding out of said first member and into said second sleeve, to create said overlapping of said sleeves.
4. The joint according to claim 3 further including a third sleeve slidably fit within said first sleeve to force out said penetrating features into said surrounding portions of said first member.
5. The joint according to claim 5 wherein said third sleeve extends substantially coextensively within said first sleeve including said protruding portion.
6. The joint according to claim 3 further including an end piece having a sleeve portion fit into said hole in said second member and against an end of said second sleeve remote from said first member and also having an end wall abutted by a head on said bolt with an opening therein allowing a body portion of said bolt to pass through said end wall.
7. The joint according to claim 6 wherein said end piece has a flange position overlying a side surface of said second member adjacent said hole therein.
8. The joint according to claim 7 wherein said flange is fastened to said second member.
9. The joint according to claim 1 wherein said members are wood.
10. A method of joining one end of a first member to one side of a second member including forming a hole extending into said one end of said first member;
inserting a first sleeve into said hole and securing the same therein; "ϊibrnlrig i;:nBϊe"ditSMng through said second member exiting through said one side of said first member; inserting a second sleeve into said hole in said second member and securing the same therein; configuring at least one of said sleeves to protrude out of the associated hole and to be slidably fit in the other sleeve when said members are positioned against each other with said sleeves, said members so positioned with said one end of said first member against said one side of said second member; inserting a bolt through said sleeves from said one side of said second member and threading the same into an internally threaded element at the inside end of said first sleeve, until a head on said bolt pulls said first and second members together.
11. The method according to claim 9 wherein said first and second sleeves are each secured to said first and second members respectively by forcing spike features formed on said sleeves out into surrounding positions of said members.
12. The method according to claim 10 wherein said spike features are forced out by inserting a cylindrical piece into the inside of each sleeve to force spike features disposed within said sleeves out into said surrounding portions of a respective first and second members. '13'. I|J "ϊh€'ϊnetliBtfacSb'WMg to claim 11 wherein a third sleeve comprising said cylindrical piece is forced into the inside of said first sleeve to force said spike features radially outwardly.
14. The method according to claim 12 wherein said third sleeve is fit within said protruding portion of one of said sleeves and left in place after creating said joint.
15. The method according to claim 9 further including installing an end piece on said hole in said second member on a side opposite said one of said second member, and engaging said bolt head with an end wall on said end piece to pull said first and second members together.
16. The method according to claim 9 wherein said first sleeve is protruded out from said one end of said first member and is extended within said second sleeve which is not protruded from said second member.
EP06786944A 2005-07-25 2006-07-11 Structural member joints Withdrawn EP1913266A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/189,040 US7815391B2 (en) 2004-07-23 2005-07-25 Structural member joints
PCT/US2006/026966 WO2007013905A2 (en) 2005-07-25 2006-07-11 Structural member joints

Publications (2)

Publication Number Publication Date
EP1913266A2 true EP1913266A2 (en) 2008-04-23
EP1913266A4 EP1913266A4 (en) 2009-10-28

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Application Number Title Priority Date Filing Date
EP06786944A Withdrawn EP1913266A4 (en) 2005-07-25 2006-07-11 Structural member joints

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EP (1) EP1913266A4 (en)
CA (1) CA2616743C (en)
WO (1) WO2007013905A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354549A (en) * 1919-04-16 1920-10-05 John T Gilmer Dowel-pin
GB974115A (en) * 1961-12-15 1964-11-04 Carr Fastener Co Ltd Device for connecting tubes or tube-like elements to one another
GB2132305A (en) * 1982-12-22 1984-07-04 Turner & Co N Z Limited A R A timber connector
DE3516423A1 (en) * 1984-05-03 1985-11-07 Multikunst Design ApS, Ringe Method of producing a stabilised bolt connection between a wooden element and another construction element, and connecting element
US4770581A (en) * 1984-03-01 1988-09-13 Dom Holdings Plc Expansion anchor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4787793A (en) * 1987-03-27 1988-11-29 Terrell Lee Sharp Bolt guard

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1354549A (en) * 1919-04-16 1920-10-05 John T Gilmer Dowel-pin
GB974115A (en) * 1961-12-15 1964-11-04 Carr Fastener Co Ltd Device for connecting tubes or tube-like elements to one another
GB2132305A (en) * 1982-12-22 1984-07-04 Turner & Co N Z Limited A R A timber connector
US4770581A (en) * 1984-03-01 1988-09-13 Dom Holdings Plc Expansion anchor
DE3516423A1 (en) * 1984-05-03 1985-11-07 Multikunst Design ApS, Ringe Method of producing a stabilised bolt connection between a wooden element and another construction element, and connecting element

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2007013905A2 *

Also Published As

Publication number Publication date
WO2007013905A3 (en) 2007-05-03
CA2616743A1 (en) 2007-02-01
WO2007013905A2 (en) 2007-02-01
CA2616743C (en) 2013-06-18
EP1913266A4 (en) 2009-10-28

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