CA2043800C - Joining device - Google Patents
Joining deviceInfo
- Publication number
- CA2043800C CA2043800C CA 2043800 CA2043800A CA2043800C CA 2043800 C CA2043800 C CA 2043800C CA 2043800 CA2043800 CA 2043800 CA 2043800 A CA2043800 A CA 2043800A CA 2043800 C CA2043800 C CA 2043800C
- Authority
- CA
- Canada
- Prior art keywords
- bodies
- bar
- pin
- holes
- joining device
- 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.)
- Expired - Fee Related
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- Mutual Connection Of Rods And Tubes (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A joining device comprises a cylindrical bar with a projecting pin at one end and two rigid bodies having cylindrical holes and channels for accomodating the bar and the pin. The two rigid bodies are first attached to elements to be joined. Insertion of the bar into the holes and subsequent rotation of the bar causes the two bodies and thus the two elements to be retained together. In a preferred case, the two elements are urged together because the far edge of the second body to be entered has a sloping edge which is a cam surface against the projecting pin. The joining device may be used in fencing particularly for surrounding temporary winter rinks. Erection and disassembly of such rinks is thus hastened.
Description
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BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
This invention relates to a joining device particularly to a device for joing elements of fencing together for instance to surround a temporary ice rink in the winter.
BRIEF DESCRIPTION OF THE PRIOR ART
In the game of ice hockey there is demand for large numbers of lower cost portable ice rinks than can make dual use of recreational land. Heretofore, the hockey "dasher" boards around the perimeter of the ice rink have had to be fastened together using support brackets attachable by time consuming construction operations using such basic .tools as screws and screwdrivers. Furthermore the dasher boards cannot easily be held together so as to exclude gaps, such gaps leading to a weaker structure more prone to climatological and user damage.
The mainly wooden boards now used on such rinks have to withstand the battering and collisions of players, resurfacing machines and hockey equipment as well as the expanding pressure of the ice as it is constantly melted and refrozen at its edges. As a result they suffer considerable wear made worse by harsh weather over the course of a winter.
In the light of the foregoing, it is clearly desirable to have a rink fencing mechanism which can be quickly and easily installed and dismantled preferably in conjunction with dasher boards of greater durability than used hitherto.
.
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OBJECTS OF THE INVENTION
It is therefore an object of the invention to provide a joining device useable in fence construction where two adjacent fence elements may be ~uickly and reversibly attached leaving a minimal gap between edges.
It is another object to provide such a joining device as an integrated constituent of a board having improved durability.
In meeting these and other objects, the present inventor appreciated that his invention was not restricted merely to fencing but could be used as a joining device for a multi-tude of purposes.
SUMMAR~ OF THE INVENTION
Thus, the present invention provides a device for use in joining two structural members end-to-end. This device comprises a first rigid body attachable adjacent to one end of one structural member and a second rigid body attachable adjacent to one end of the other structural member~ Each body has a cylindrical through-hole about its longitudinal axis and a recessed channel opening into the through-hole along its full length so that when both structural members are positioned end-to-end in joining position, the through-hole and recessed channel of each body are respectively coaxial and aligned with the through-hole and recessed channel of the other body. The joining device also includes a connection member comprising a cylindrical bar of such a diameter as to be insertable into the through-holes. This bar has its first end attached to a handling member designed to act as a stop to limit the insertion of the bar in the ~ ~ 3 8 ~ ~
through-holes. The second end is free. The connection member also comprises a pin projecting from the bar at such a distance from the handling member as to be free of the channels when the bodies are adjacent to each other and the bar is fully inserted into their holes. The pin is sized to pass along a path defined by the aligned channels.
In use, the structural members are joined end-to-end by positioning their respective bodies adjacent to each other with their through-holes and channels in registry, then inserting the bar and pin through the holes and channels of the bodies until the free end of the bar and the pin protrude beyond the adjacent bodies, on a side opposite to the handling member, and finally by causing the handling member to rotate the bar inside the aligned holes and thus to place the pin in a retaining position out of the channel path.
Preferably, the pin and the channels extend radially from the bar and the hole respectively.
In a particularly preferred embodiment, the first rigid body has two flat ends perpendicular to the axis and the second rigid body has a first flat end perpendicular to the axis and a second flat end angled slightly to its first flat end.
Furthermore, the pin has a partial cylindrical portion facing the connection member at a fixed distance (or "fixed amount") therefrom. The angled flat end is such that when in the joining position, the combined length of the cylindrical holes is at a maximum opposite the channel and is greater than the fixed amount. To achieve the joining position, the first (perpendicular) end of the second body is placed adjacent to one of the ends of the first body. In such juxtaposition, the bar is fully insertable. Now, when ~ '. ~ '~' , '. '' .
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the bar on the connection member is rotated, the two bodies are urged together by a cam action of the cylindrical portion of the pin on the angled end.
In this cam embodiment, it is also preferable that maximum compression between the bodies is achieved after about 90~
rotation of the bar.
The invention has the advantage that a construction worker may join adjacent fence elements by simple insertion of the bar on the enyaging member into the holes in the structural members (preferably already attached to the fencing elements) and may then simply rotate the engaging member to lock the joint. This rotation, in the preferred embodiment with the cam, also tightens the joint by compressing the two bodies together.
BRIEF DESCRIPTION OF THE DRAWNGS
In the following non-restrictive illustration of the invention:
Fig. 1 shows a rink with a surrounding fence supported by joining devices according to the present invention;
Fig. 2 is an exploded perspective view of two fence elements with joining devices according to the invention;
Fig. 3 is a perspective view of the embodiment of Fig. 2 but assembled;
Fif. 4 is a cross section along the line IV-IV of Fig. 2;
Fig. 5 is a plan view of detail of one joining mechanism of 2 ~ A ~
the invention before assembly; and Fig. 6 is a plan view similar to Fig. 5 showing the same embodiment after assembly.
DESCRIPTION OF A PREFERRED EMBODIMENT
In what follows, the same reference numerals apply to all figures, and "6" (for example) may collectively refer to "6a and 6b" (in this example).
Fig. 1 shows a schematic view of an enfenced rink (1) showing the smooth inner walls (2) with minimal gaps (3) between boards (4). Two joining devices (5) according to the invention straddle the gap (3) between adjacent boards (4).
Turning now to the embodiment of Figures 5 and 6, the joining device according to the invention comprises first (6) and second (7) structural members with a rigid body (8 and 9) attached respectively to each structural member (6 and 7).
In each body (8 and 9) there is a cylindrical through hole (103 symmetrical about the body's longitudinal axis (X).
There is a channel (11) communicating outwardly from the hole (10) enough to accommodate the pin 120). However in the illustrated embodiment, this channel (ll) extends a~l the way to the outer surface (12) of the body (8 or 9) although such is not essential. The channel is preferably parallel to the longitudinal axis X. It is also preferred that the channel (11) extend radially from this axis X, ie that the channel (ll) itself be bisected along its length by ' 2~3~
a single radius of the cylinder forming the hole (10).
The first body (8) has two flat ends ~13 and 14) both perpendicular to axis X while the second body (9) has one flat end (15) perpendicular to the axis (which can therefore abut flat end 14 of the first body) and another end (16) flat but preferably not perpendicular to the axis. Instead this end (16) may be angled slightly to the first end (15).
The angle is chosen so that the cylindrical hole (10) of the combined bodies (ie body 8 and 9 juxtaposed with respective flat sides 14 and 15 in abutment) has its shortest length (along the axis X) at the bisector of the channel (11) and has its maximum length diametrically opposite this bisector.
The other constituent of the invention visible in Figures 5 and 6 is the connection member (17) to which is attached a cylindrical bar (18). Towards the free end (19) of this bar (18) is an outwardly extending pin (20) at least a portion of which is preferably cylindrical but which more preferably is wholly cylindrical, as in this Figure. If the pin (20) is only partially cylindrical, the cylindrical part faces the connection member (17) at a fixed distance therefrom.
The fixed distance or "fixed amount" is chosen to be slightly more than the minimum hole length but slightly less than the maximum hole length.
The pin (20) is preferably radially projecting from the cylindrical bar (18) but in any event is designed to be accommodated in the channel (11), the channel (11) thereby forming a path for eventual entry of the pin (20).
For assembly, the two bodies (8 and 9) on respective structural members are juxtaposed to align their holes (10) 2 ~ ~ 3 , Q .
and channels (11) in register. Then the connection member (17) is manipulated to bring the cylindrical bar (18) into the hole (10) of the first body (8) while orienting the connection member (17) so that the pin (20) passes into the path formed by the channel (ll).
The cylindrical bar (18) is then pushed by the connection member (17) through the hole (11) of the first body (8) and into the hole (11) of the second body (9) until the pin (20) just protrudes beyond edge 16.
Owing to the selected fixed distance between pin (20) and connection member (17), the connection member (17) acts as a stop against the first flat side (13) of the first body (8) as the pin (20) reaches edge 16 of the second body ~9).
Thus, by now rotating the cylindrical bar (18) (downwards in Figures 5 and 6), the partically cylindrical portion of the pin (20) slides on the angled side (16) in a cam motion to force the bar (18) fully into the holes (10) until the connection member (17) is firmly compressed against first side (13) of the first body (8) The rotation needed to achieve maximum compression is preferably about 90~. That is to say that, in terms of radii of the cylindrical hole, there is about a 90~ angle between the radius bisecting the channel and the radius at which the hole is the same length as the "minimum fixed amount" between pin (20) and connection member (17).
In the simpler embodiment of the invention which lacks the angled side, rotation of the bar (18) does not necessarily compress the two bodies (8 and 9) together but locks them end-to-end.
2 ~ ~ 3 ~
Returning to Figure 2, it is preferred that each of the structural members (6 and 7) carries a pair of rigid bodies (8 and 9) of one of the types described.
Thus, in the cam embodiment, structural member 6 carries two "first" rigid bodies (8) - ie ones with two ~1at sides both perpendicular to axis X - and structural member 7 carries two "second" rigid bodies (9) - ie ones where one side is perpendicular to the axis X and the other slightly angled in the manner described.
In the case of Figure 2, the structural members (6 and 7) are boards or are attachable to such boards.
When the two boards are placed alongside each other so that holes (10) and channels (11) in respective rigid bodies (8 and 9) are aligned, two connec-tion members (17) may be manipulated to insert their respective cylindrical bars (18) into the cylindrical holes (10). After rotation to lock or tighten the joint (by compression in the cam embodiment), the two engaging members may be attached to each other (by interattachment means such as bolts, screws etc) or to the ground for instance by a stake, or to concrete or other material. This configuration is shown in Figure 3.
Clearly in the case of Figures 2 and 3, the structural members (attached to or forming part of boards, in this case) are vertically disposed so that longitudinal axis X is horizontal.
In this orientation, the channels (11) on the upper two rigid bodies (8a and 9a) are at 45~ to the vertical while the channels (11) on the other two rigid bodies (8b and 9b) are vertical). "Channel" in this context means the radius 2~ ~3~
of the cylindrical holes (10) which bisect the channel.
Thus when both connection members (17) are rotated about 90 they meet at their free ends (21 and 22) and may thus be joined in the manner exemplified in Fig. 3.
One way of attaching the free ends (21 and 22) is by use of registerable holes (23) in respective free ends (21 and 22) to allow passage of securing means (eg bolts, screws, etc).
When the structural members (6 and 7) are not integral with a board as part of a fence, they preferably have means for attachment to fencing. Again there may be simple holes for passage of securing means as above.
The preferred structural member (6 or 7) carries a pair of identical rigid bodies (8 or 9) attached (eg by welding) and is a flat bar (24) comprising holes for securing to a board (4).
This bar (24) is shown in cross-section in Fig. 4 attached by eg screws ~25) to a board (4). The whole is then enveloped in fibreglass (27) except for the protruding rigid bodies (8) or in another weather and user resistant cladding.
By this means a modular system of rink fencing can be created so that a plurality of such boards (4) may be inter-connected to surround a rink (1) - see Fig. 1. Thus on one board edge, the two rigid bodies (8) both have perpendi-cularly flat edges (13 and 14) and on the opposite side the outer pair of edges (15) is perpendicularly flat but the inner pair (16) may be angled in the manner described. The edges 14 and 15 are thus flush with opposite ends of adjacent boards.
The joining device (5) of the invention may be attached to rounded boards to form the corner dasher boards of the ring (1).
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
This invention relates to a joining device particularly to a device for joing elements of fencing together for instance to surround a temporary ice rink in the winter.
BRIEF DESCRIPTION OF THE PRIOR ART
In the game of ice hockey there is demand for large numbers of lower cost portable ice rinks than can make dual use of recreational land. Heretofore, the hockey "dasher" boards around the perimeter of the ice rink have had to be fastened together using support brackets attachable by time consuming construction operations using such basic .tools as screws and screwdrivers. Furthermore the dasher boards cannot easily be held together so as to exclude gaps, such gaps leading to a weaker structure more prone to climatological and user damage.
The mainly wooden boards now used on such rinks have to withstand the battering and collisions of players, resurfacing machines and hockey equipment as well as the expanding pressure of the ice as it is constantly melted and refrozen at its edges. As a result they suffer considerable wear made worse by harsh weather over the course of a winter.
In the light of the foregoing, it is clearly desirable to have a rink fencing mechanism which can be quickly and easily installed and dismantled preferably in conjunction with dasher boards of greater durability than used hitherto.
.
' ~
2 g '~. 3 ~
OBJECTS OF THE INVENTION
It is therefore an object of the invention to provide a joining device useable in fence construction where two adjacent fence elements may be ~uickly and reversibly attached leaving a minimal gap between edges.
It is another object to provide such a joining device as an integrated constituent of a board having improved durability.
In meeting these and other objects, the present inventor appreciated that his invention was not restricted merely to fencing but could be used as a joining device for a multi-tude of purposes.
SUMMAR~ OF THE INVENTION
Thus, the present invention provides a device for use in joining two structural members end-to-end. This device comprises a first rigid body attachable adjacent to one end of one structural member and a second rigid body attachable adjacent to one end of the other structural member~ Each body has a cylindrical through-hole about its longitudinal axis and a recessed channel opening into the through-hole along its full length so that when both structural members are positioned end-to-end in joining position, the through-hole and recessed channel of each body are respectively coaxial and aligned with the through-hole and recessed channel of the other body. The joining device also includes a connection member comprising a cylindrical bar of such a diameter as to be insertable into the through-holes. This bar has its first end attached to a handling member designed to act as a stop to limit the insertion of the bar in the ~ ~ 3 8 ~ ~
through-holes. The second end is free. The connection member also comprises a pin projecting from the bar at such a distance from the handling member as to be free of the channels when the bodies are adjacent to each other and the bar is fully inserted into their holes. The pin is sized to pass along a path defined by the aligned channels.
In use, the structural members are joined end-to-end by positioning their respective bodies adjacent to each other with their through-holes and channels in registry, then inserting the bar and pin through the holes and channels of the bodies until the free end of the bar and the pin protrude beyond the adjacent bodies, on a side opposite to the handling member, and finally by causing the handling member to rotate the bar inside the aligned holes and thus to place the pin in a retaining position out of the channel path.
Preferably, the pin and the channels extend radially from the bar and the hole respectively.
In a particularly preferred embodiment, the first rigid body has two flat ends perpendicular to the axis and the second rigid body has a first flat end perpendicular to the axis and a second flat end angled slightly to its first flat end.
Furthermore, the pin has a partial cylindrical portion facing the connection member at a fixed distance (or "fixed amount") therefrom. The angled flat end is such that when in the joining position, the combined length of the cylindrical holes is at a maximum opposite the channel and is greater than the fixed amount. To achieve the joining position, the first (perpendicular) end of the second body is placed adjacent to one of the ends of the first body. In such juxtaposition, the bar is fully insertable. Now, when ~ '. ~ '~' , '. '' .
.
.
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the bar on the connection member is rotated, the two bodies are urged together by a cam action of the cylindrical portion of the pin on the angled end.
In this cam embodiment, it is also preferable that maximum compression between the bodies is achieved after about 90~
rotation of the bar.
The invention has the advantage that a construction worker may join adjacent fence elements by simple insertion of the bar on the enyaging member into the holes in the structural members (preferably already attached to the fencing elements) and may then simply rotate the engaging member to lock the joint. This rotation, in the preferred embodiment with the cam, also tightens the joint by compressing the two bodies together.
BRIEF DESCRIPTION OF THE DRAWNGS
In the following non-restrictive illustration of the invention:
Fig. 1 shows a rink with a surrounding fence supported by joining devices according to the present invention;
Fig. 2 is an exploded perspective view of two fence elements with joining devices according to the invention;
Fig. 3 is a perspective view of the embodiment of Fig. 2 but assembled;
Fif. 4 is a cross section along the line IV-IV of Fig. 2;
Fig. 5 is a plan view of detail of one joining mechanism of 2 ~ A ~
the invention before assembly; and Fig. 6 is a plan view similar to Fig. 5 showing the same embodiment after assembly.
DESCRIPTION OF A PREFERRED EMBODIMENT
In what follows, the same reference numerals apply to all figures, and "6" (for example) may collectively refer to "6a and 6b" (in this example).
Fig. 1 shows a schematic view of an enfenced rink (1) showing the smooth inner walls (2) with minimal gaps (3) between boards (4). Two joining devices (5) according to the invention straddle the gap (3) between adjacent boards (4).
Turning now to the embodiment of Figures 5 and 6, the joining device according to the invention comprises first (6) and second (7) structural members with a rigid body (8 and 9) attached respectively to each structural member (6 and 7).
In each body (8 and 9) there is a cylindrical through hole (103 symmetrical about the body's longitudinal axis (X).
There is a channel (11) communicating outwardly from the hole (10) enough to accommodate the pin 120). However in the illustrated embodiment, this channel (ll) extends a~l the way to the outer surface (12) of the body (8 or 9) although such is not essential. The channel is preferably parallel to the longitudinal axis X. It is also preferred that the channel (11) extend radially from this axis X, ie that the channel (ll) itself be bisected along its length by ' 2~3~
a single radius of the cylinder forming the hole (10).
The first body (8) has two flat ends ~13 and 14) both perpendicular to axis X while the second body (9) has one flat end (15) perpendicular to the axis (which can therefore abut flat end 14 of the first body) and another end (16) flat but preferably not perpendicular to the axis. Instead this end (16) may be angled slightly to the first end (15).
The angle is chosen so that the cylindrical hole (10) of the combined bodies (ie body 8 and 9 juxtaposed with respective flat sides 14 and 15 in abutment) has its shortest length (along the axis X) at the bisector of the channel (11) and has its maximum length diametrically opposite this bisector.
The other constituent of the invention visible in Figures 5 and 6 is the connection member (17) to which is attached a cylindrical bar (18). Towards the free end (19) of this bar (18) is an outwardly extending pin (20) at least a portion of which is preferably cylindrical but which more preferably is wholly cylindrical, as in this Figure. If the pin (20) is only partially cylindrical, the cylindrical part faces the connection member (17) at a fixed distance therefrom.
The fixed distance or "fixed amount" is chosen to be slightly more than the minimum hole length but slightly less than the maximum hole length.
The pin (20) is preferably radially projecting from the cylindrical bar (18) but in any event is designed to be accommodated in the channel (11), the channel (11) thereby forming a path for eventual entry of the pin (20).
For assembly, the two bodies (8 and 9) on respective structural members are juxtaposed to align their holes (10) 2 ~ ~ 3 , Q .
and channels (11) in register. Then the connection member (17) is manipulated to bring the cylindrical bar (18) into the hole (10) of the first body (8) while orienting the connection member (17) so that the pin (20) passes into the path formed by the channel (ll).
The cylindrical bar (18) is then pushed by the connection member (17) through the hole (11) of the first body (8) and into the hole (11) of the second body (9) until the pin (20) just protrudes beyond edge 16.
Owing to the selected fixed distance between pin (20) and connection member (17), the connection member (17) acts as a stop against the first flat side (13) of the first body (8) as the pin (20) reaches edge 16 of the second body ~9).
Thus, by now rotating the cylindrical bar (18) (downwards in Figures 5 and 6), the partically cylindrical portion of the pin (20) slides on the angled side (16) in a cam motion to force the bar (18) fully into the holes (10) until the connection member (17) is firmly compressed against first side (13) of the first body (8) The rotation needed to achieve maximum compression is preferably about 90~. That is to say that, in terms of radii of the cylindrical hole, there is about a 90~ angle between the radius bisecting the channel and the radius at which the hole is the same length as the "minimum fixed amount" between pin (20) and connection member (17).
In the simpler embodiment of the invention which lacks the angled side, rotation of the bar (18) does not necessarily compress the two bodies (8 and 9) together but locks them end-to-end.
2 ~ ~ 3 ~
Returning to Figure 2, it is preferred that each of the structural members (6 and 7) carries a pair of rigid bodies (8 and 9) of one of the types described.
Thus, in the cam embodiment, structural member 6 carries two "first" rigid bodies (8) - ie ones with two ~1at sides both perpendicular to axis X - and structural member 7 carries two "second" rigid bodies (9) - ie ones where one side is perpendicular to the axis X and the other slightly angled in the manner described.
In the case of Figure 2, the structural members (6 and 7) are boards or are attachable to such boards.
When the two boards are placed alongside each other so that holes (10) and channels (11) in respective rigid bodies (8 and 9) are aligned, two connec-tion members (17) may be manipulated to insert their respective cylindrical bars (18) into the cylindrical holes (10). After rotation to lock or tighten the joint (by compression in the cam embodiment), the two engaging members may be attached to each other (by interattachment means such as bolts, screws etc) or to the ground for instance by a stake, or to concrete or other material. This configuration is shown in Figure 3.
Clearly in the case of Figures 2 and 3, the structural members (attached to or forming part of boards, in this case) are vertically disposed so that longitudinal axis X is horizontal.
In this orientation, the channels (11) on the upper two rigid bodies (8a and 9a) are at 45~ to the vertical while the channels (11) on the other two rigid bodies (8b and 9b) are vertical). "Channel" in this context means the radius 2~ ~3~
of the cylindrical holes (10) which bisect the channel.
Thus when both connection members (17) are rotated about 90 they meet at their free ends (21 and 22) and may thus be joined in the manner exemplified in Fig. 3.
One way of attaching the free ends (21 and 22) is by use of registerable holes (23) in respective free ends (21 and 22) to allow passage of securing means (eg bolts, screws, etc).
When the structural members (6 and 7) are not integral with a board as part of a fence, they preferably have means for attachment to fencing. Again there may be simple holes for passage of securing means as above.
The preferred structural member (6 or 7) carries a pair of identical rigid bodies (8 or 9) attached (eg by welding) and is a flat bar (24) comprising holes for securing to a board (4).
This bar (24) is shown in cross-section in Fig. 4 attached by eg screws ~25) to a board (4). The whole is then enveloped in fibreglass (27) except for the protruding rigid bodies (8) or in another weather and user resistant cladding.
By this means a modular system of rink fencing can be created so that a plurality of such boards (4) may be inter-connected to surround a rink (1) - see Fig. 1. Thus on one board edge, the two rigid bodies (8) both have perpendi-cularly flat edges (13 and 14) and on the opposite side the outer pair of edges (15) is perpendicularly flat but the inner pair (16) may be angled in the manner described. The edges 14 and 15 are thus flush with opposite ends of adjacent boards.
The joining device (5) of the invention may be attached to rounded boards to form the corner dasher boards of the ring (1).
Claims (21)
1. A device for use in joining two structural members end-to-end, said device comprising:
- a first rigid body attachable adjacent to one end of one structrural member;
- a second rigid body attachable adjacent to one end of the other structural member;
- each of said bodies having a cylindrical through-hole about a longitudinal axis thereof and a recessed channel opening into said through-hole along the full length thereof, so that when both structural members are positioned end-to-end in joining position, said through-hole and recessed channel of each body are respectively coaxial and aligned with the through-hole and recessed channel of the other body; and - a connection member comprising a cylindrical bar of such a diameter as to be insertable into said through-holes, said bar having a first end attached to a handling member designed to act as a stop to limit the insertion of the bar in the through-holes, and a second free end, said connection member also comprising a pin projecting from said bar at such a distance from the handling member as to be free of the channels when the bodies are adjacent to each other and the bar is fully inserted therein, said pin being sized to pass along a path defined by said aligned channels;
- whereby, in use, said structural members are joined end-to-end by positioning their respective bodies adjacent to each other with their through-holes and channels in registry, then inserting the bar and pin through said holes and channels of said bodies until the free end of the bar and the pin protrude beyond said adjacent bodies, on a side opposite to the handling member, and finally causing the handling member to rotate the bar inside said aligned holes and thusplace the pin in a retaining position out of the channel path.
- a first rigid body attachable adjacent to one end of one structrural member;
- a second rigid body attachable adjacent to one end of the other structural member;
- each of said bodies having a cylindrical through-hole about a longitudinal axis thereof and a recessed channel opening into said through-hole along the full length thereof, so that when both structural members are positioned end-to-end in joining position, said through-hole and recessed channel of each body are respectively coaxial and aligned with the through-hole and recessed channel of the other body; and - a connection member comprising a cylindrical bar of such a diameter as to be insertable into said through-holes, said bar having a first end attached to a handling member designed to act as a stop to limit the insertion of the bar in the through-holes, and a second free end, said connection member also comprising a pin projecting from said bar at such a distance from the handling member as to be free of the channels when the bodies are adjacent to each other and the bar is fully inserted therein, said pin being sized to pass along a path defined by said aligned channels;
- whereby, in use, said structural members are joined end-to-end by positioning their respective bodies adjacent to each other with their through-holes and channels in registry, then inserting the bar and pin through said holes and channels of said bodies until the free end of the bar and the pin protrude beyond said adjacent bodies, on a side opposite to the handling member, and finally causing the handling member to rotate the bar inside said aligned holes and thusplace the pin in a retaining position out of the channel path.
2. A device according to claim 1, wherein said pin and said channels extend radially from said bar and said hole respectively.
3. A device according to claim 1, wherein said channel communicates outwardly with an outer surface of said body.
4. A joining device according to claim 1, wherein each structural member carries a pair of said rigid bodies such that each pair of bodies has parallel longitudinal axes and each pair is separated by an identical distance. and wherein there are two of said connection members.
5. A joining device according to claim 4, wherein said structural members are vertically disposed and said longitudinal axes are horizontal, each pair of bodies comprising a lower body and an upper body.
6. A joining device according to claim 5, wherein said connection members have said bars at a first end thereof and have means for interattachment at a second end thereof and to the ground or similar surfaces.
7. A joining device according to claim 6, wherein said interattachment means comprises registerable holes in respective second ends for passage of securing means.
8. A joining device according to claim 7, wherein said structural members further comprise means for attachment to fencing.
9. A piece of fencing comprising a rectangular board and two joining devices according to claim 4 disposed adjacent to opposite ends of said board.
10. A rectangular piece of fencing comprising a piece of fencing according to claim 9 enveloped in fiberglass except for protruding rigid bodies.
11. A joining device according to claim 1, wherein:
- said first body has two flat ends perpendicular to said axis;
- said second body, has a first flat end perpendicular to said axis and a secondflat end angled slightly to said first flat end. said first end being intended to be positioned in use, adjacent to one of said ends of said first body; and - said pin has at least a partial cylindrical portion facing said connection member and spaced therefrom by a fixed amount:
- said two cylindrical holes being of combined maximum length opposite said channel that is greater than said fixed amount so that rotation of said bar causes said bodies to be urged together by a cam action of said cylindrical portion of said pin on said angled end.
- said first body has two flat ends perpendicular to said axis;
- said second body, has a first flat end perpendicular to said axis and a secondflat end angled slightly to said first flat end. said first end being intended to be positioned in use, adjacent to one of said ends of said first body; and - said pin has at least a partial cylindrical portion facing said connection member and spaced therefrom by a fixed amount:
- said two cylindrical holes being of combined maximum length opposite said channel that is greater than said fixed amount so that rotation of said bar causes said bodies to be urged together by a cam action of said cylindrical portion of said pin on said angled end.
12. A device according to claim 11, wherein said pin and said channels extend radially from said bar and said hole respectively.
13. A device according to claim 127 wherein said channel communicates outwardly with an outer surface of said body.
14. A device according to claim 13, wherein maximum compression between said bodies is achieved after about a 90 rotation of said bar.
15. A joining device according to claim 14, wherein the first structural member carries a pair of said first rigid bodies and the second structural member carries a pair of said second rigid bodies such that each pair of bodies has parallel longitudinal axes and each pair is separated by an identical distance, and wherein there are two of said connection members.
16. A joining device according to claim 15, wherein said structural members are vertically disposed and said longitudinal axes are horizontal, each pair of bodies comprising a lower body and an upper body wherein a radius of respective cylindrical holes bisecting said channel is vertical for said lower bodies and at 45 to the vertical for said upper bodies.
17. A joining device according to claim 16, wherein said connection members have said bars at a first end thereof and have means for interattachment at a second end thereof and to the ground or similar surfaces.
18. A joining device according to claim 17, wherein said interattachment means comprises registerable holes in respective second ends for passage of securing means.
19. A joining device according to claim 18, wherein said structural members further comprise means for attachment to fencing.
20. A piece of fencing comprising a rectangular board and two joining devices according to claim 16, said first and second structural members being so disposed on said board that said perpendicular ends are flush with opposite ends of said board.
21. A rectangular piece of fencing according to claim 20, wherein the board, except for protruding rigid bodies is enveloped in fiberglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2043800 CA2043800C (en) | 1991-06-03 | 1991-06-03 | Joining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2043800 CA2043800C (en) | 1991-06-03 | 1991-06-03 | Joining device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2043800A1 CA2043800A1 (en) | 1992-12-04 |
| CA2043800C true CA2043800C (en) | 1997-12-23 |
Family
ID=4147726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2043800 Expired - Fee Related CA2043800C (en) | 1991-06-03 | 1991-06-03 | Joining device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2043800C (en) |
-
1991
- 1991-06-03 CA CA 2043800 patent/CA2043800C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2043800A1 (en) | 1992-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |