CA1058431A - Toggle bolt - Google Patents
Toggle boltInfo
- Publication number
- CA1058431A CA1058431A CA283,046A CA283046A CA1058431A CA 1058431 A CA1058431 A CA 1058431A CA 283046 A CA283046 A CA 283046A CA 1058431 A CA1058431 A CA 1058431A
- Authority
- CA
- Canada
- Prior art keywords
- sleeve
- collar
- bolt
- wall
- toggle 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.)
- Expired
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- Dowels (AREA)
Abstract
A B S T R A C T
A toggle bolt capable without disassembly or reassembly of cutting a mounting hole through a wall and being easily in-stalled therein. The toggle bolt includes a generally tubular sleeve having an internally threaded collar pivotally mounted at a position along the longitudinal axis of the sleeve such that the sleeve includes a heavier portion between the collar and one end and a lighter portion between the collar and the opposite end. One of the sleeve ends has cutting teeth or other cutting configuration, and a slot is provided in the wall of the sleeve along the lighter portion thereof. A bolt is threaded into the collar and is disposable transversely of the sleeve during drilling of a mounting hole and is disposable via the slot coaxially of the sleeve for insertion of the sleeve through the mounting hole for anchoring therein.
A toggle bolt capable without disassembly or reassembly of cutting a mounting hole through a wall and being easily in-stalled therein. The toggle bolt includes a generally tubular sleeve having an internally threaded collar pivotally mounted at a position along the longitudinal axis of the sleeve such that the sleeve includes a heavier portion between the collar and one end and a lighter portion between the collar and the opposite end. One of the sleeve ends has cutting teeth or other cutting configuration, and a slot is provided in the wall of the sleeve along the lighter portion thereof. A bolt is threaded into the collar and is disposable transversely of the sleeve during drilling of a mounting hole and is disposable via the slot coaxially of the sleeve for insertion of the sleeve through the mounting hole for anchoring therein.
Description
1058431 ll FIELD OF THE INVENTION
1 , This invention relates to fasteners and more particularly
1 , This invention relates to fasteners and more particularly
2 ' to toggle bolts for engagement of the back surface of a hollow
3 wall or other partition via a hole provided therethrough.
¦ BACKGROUND OF THE INVENTION
1 I Various fasteners are known for securing an item to a 2 1 hollow wall or partition by anchoring the fastener to the rear 3 ! surface of the hollow wall via a hole provided therethrough.
¦ BACKGROUND OF THE INVENTION
1 I Various fasteners are known for securing an item to a 2 1 hollow wall or partition by anchoring the fastener to the rear 3 ! surface of the hollow wall via a hole provided therethrough.
4 For example, one well-known toggle bolt employs a pair of hinged j wings threaded onto a bolt and held in a normally open or out-6 ¦, wardly extending position by means of a spring. The wings are 7 ,¦ folded toward one another for insertion through a previously 8 , drilled hole in a hollow wall, such as a plaster or plasterboard 9 wall, the wings snapping open after passa~e through the hole.
,j The open wings are drawn via the threaded bolt against the rear 11 ~, wall surface and the bolt tightened against the front wall sur-12 ~I face to anchor the fastener, to the front end of which is con-13 !I nected a picture hook, bracket or other item being fastened to 14 j the wall. Such toggle bolts of conventional construction are 1! widely employed and provide good holding action for many purposes.
16 l~ However, a hole must be provided in the wall substantially larger 17 than the bolt diameter to accommodate the relatively large hinged 18 wing assembly which must be passed through the hole to the rear 19 of the wall for anchoring therein. Moreover, the mounting hole ~ must be drilled or reamed by a separate drill bit or other ' ,, . i 1 , suitable tool. As a further disadvantage, the wing assembly can 2 wrongly be installed backwards on the bolt in which event firm 3 ! anchoring is not achieved. The wings must also be drawn against 4 I the rear wall surface to tighten the bolt and pre~ent rotation of the wings.
6 1 Various alternative toggle bolt structures have been 7 1I proposed heretofore. In U.S. Patent 3,782,238 an anchor plate 8 to which a bolt is threaded and secured to the rear surface of 9 a hollow wall is configured to serve as a drill bit for provision ¦
l~ of a mounting opening in the wall. When used as a drill bit, the ~ plate must be disassembled from the fastener bolt and employed 12 , with a conventional hand or power drill, and after the hule is 13 i made, the plate must then be reinstalled onto the fastener bolt 14 ii at a specially configured end thereof such that the plate is 15 ll colinear with the bolt axis for insertion through the mounting 16 ,~ hole. After insertion of th~e~bolt and plate through the hole, 17 ll the bolt is twisted to cause the mounting plate to assume a 18 jl transverse disposition for anchoring against the rear wall sur-19 ¦I face as the bolt is tightened. Other fasteners of known con-¦~ struction are shown in U.S. Patents 2,908,196; 1,409,626;
21 1' 608,717; and 2,578,515.
I, SUMMARY OF THE INVENTION
l 1' Briefly, the present invention provides a relatively t 2 1 simple yet highly efficient and reliable toggle bolt capable 3 1, without disassembly or reassembly of cutting a mounting hole i' , I
. ' I .
i ~3~
., .11 ..... ,...... .... I
`
:1058431 f' 1 through a wall and then being easily installed therein.. The 2 mounting hole is substantially smaller than the hole required 3 for a correspondingly sized toggle bolt of conventional wing 4 ~ construction, and the mounting hole is readily cut by the cutting i portion of the novel structure with minimal tearing or chipping 6 , of the wall surfaces. The novel toggle bolt structure includes -7 i~a generally tubular sleeve having an internally threaded collar 8 '~pivotally mounted at a position along the longitudinal axis of 9 ~; the sleeve such that the sleeve includes a heavier portion between ithe collar and one end and a lighter portion between the collar 11 and the opposite end. A channel or slot is provided in the wall 12 ' of the sleeve extending longitudinally along the lighter portion 13 j of the sleeve, the slot being sized to accommodate a bolt thread-14 , ably mated with the pivotably disposed collar. One end of the , tubular sleeve includes a series of cutting teeth or other cutting 16 'I configuration suitable for cutting a circular o~ening through a 17 !I wall to which the toggle bolt is to be mounted.
18 1 In use, the bolt is threaded through the collar in a 19 1, position generally transverse to the axis of the sleeve and the !' cutting end of the sleeve is positioned on the outer sur~ace of 21 i a wall at the location of the mounting hole. The sleeve is 22 lf rotated or reciprocated manually by use of the outwardly extending 23 ~ portions of the bolt to drill an opening through the wall, the 24 , opening having a diameter approximating the outside diameter of 3 f the sleeve. Alter~atively, the bolt can be removed from the 26 threaded collar and the sleeve inserted into a drill for use as 27 a bit for provision of the mounting hole. After cutting of the 28 mounting hole, the bolt is threaded out of the collar until the f ?
i 1C~58431 1 end of the bolt is within the collar or within the tubular sleeve 2 such that the collar and bolt can be pivoted approximately 9O
3 for alignment of the bolt within the sleeve and generally colinear 4 therewith. In this colinear disposition, the assembly is rotatedi to a position where the slot is facing generally upward such that 6 j~ the sleeve will remain in colinear disposition. The sleeve is v 7 then inserted through the previously provided mounting hole until 8 , the sleeve is completely through the hole, at which time the 9 , sleeve is rotated approximately 180 to dispose the slot down-~ wardly to permit the heavier end of the sleeve to drop to a 11 i position transverse to the axis of the threaded bolt. The bolt 12 is then tightened to draw the sleeve against the rear wall sur-13 1 face, and anchor the bolt.
I,' , ' .
.' 1' ,~ 1i DESCRIPTION OF THE DRAWINGS
1 ¦ The invention will be more fully understood from the -2 i following detailed description taken in conjunction with the 3 , accompanying drawings, in which:
4 ll Fig. 1 is a pictorial view of a toggle bolt according to , the invention;
6 Fig. 2 is a partly sectional side view illustrating 7 1l operation of the invention in cutting a mounting hole;
8 Fig. 3 is a partly sectional side view illustrating 9 insertion of the toggle bolt through a mountlng hole;
Fig. 4 is a partly sectional side view illustrating the 11 disposition of the toggle boit after insertion through a mounting.
li hole ! -.... . . . . . .. .
1 Fig. 5 is a partly sectional side view illustrating the 2 toggle bolt in anchored position; and 3 Fig. 6 is a pictorial view of a toggle bolt of alter- !
4 native embodiment.
1.
¦, DETAILED DESCRIPTION OF THE INVENTION
.
1 A toggle bolt constructed and operative according to the 2 ! invention is illustrated in Fîg. 1 and includes a generally - 3 tubular sleeve 10 of uniform wall thickness and having an 4 ' internally threaded collar 12 pivotally mounted therein by means of pivot pins 14 and 16 cooperative with respective openings 6 i` provided in the wall of sleeve 10 and disposed at an axial 7 j position offset from the longitudinal center of sleeve 10 such 8 ! that the sleeve has a longer and thus heavier portion 18 between 9 " collar 12 and a cutting end 20, and a shorter and lighter por-J~ tion 22 between collar 12 and the opposite end of sleeve 10. A
11 1 slot 24 is provided in the wall of sleeve 10 extending longi-12 ,' tudinally along the shorter portion 22. A bolt or machine 13 ¦ screw 26 is threadably mated with the internal threads of collar 14 l 12 and is of a diameter to pass through slot 24 into longitudinal j generally coaxial alignment with sleeve 10. The cutting end 20 16 ~, of sleeve 10 includes a plurality of cutting teeth 28 or other 17 1l cutting configuration suitable for cutting a circular opening 18 through a wall and in which opening the toggle bolt is to be ~, ; 19 secured.
!
.
. . I
,~
1 ; The sleeve 10 can be of many different materials depending 2 upon the degree of strength required and the nature of the wall 3 material through which an opening must be cut by the cutting end 4 of the sleeve. The sleeve can be, for example, of alumin~ or I stainless steel and can be readily abricated from tube stock in 6 Il which slot 24 is cut and cutting end 20 formed. Alternatively, 7 1l the sleeve 10 can be molded of a suitable plastic material with 8 ~ the entire sleeve configuration integrally formed without addi-9 tional fabricating steps. The collar and its pivot pins are ¦, dimensioned to provide the requisite strength.
11 , For use in cutting a mounting opening through a wall, 12 ' bolt 26 is threaded through collar 12 and through an opening 13 13 il in sleeve 10 in a position generally transverse to the axis of 14 ' sleeve 10, as shown i~ Fig. 2, and cutting end 20 is positioned ' on the outer surface of a wall 29 at the location at which a 16 ~, mounting hole is to be provided. The sleeve and its cutting end 17 ~l is manually rotated or reciprocated by use of the outwardly 18 ! extending portions 30 and 32 of bolt 26 to drill an opening 19 ¦I through the wall, this opening having a diameter approximating ¦I the outside diameter of sleeve 10. A clean hole can be readily 21 1I drilled with minimal tearing or chipping of the wall isurfaces.
22 11 After drilling of the mounting hol.e through the wall, the bolt 26 23 1' is threaded out of collar 12 until the end of the bolt is within 24 I! threaded opening of collar 12 or within sleeve 10 to permit ¦ rotation of the collar and bolt by approximately 90 for axial 26 ; alignment of bolt 26 within sleeve 10. Such pivoting of bolt 26 27 1~ with respect to sleeve 10 can be accompLished with the end por- ¦
28 tion 18 of sleeve 10 within the mounting hole or after removal ' ~, ' i ' . : ~' :
~05843~ ~
I, 1 of sleeve 10 from the mounting hole upon completion of ~he drill-2 ing operation. With bolt 26 in generally colinear disp~sition 3 within sleeve 10, the assembly is rotated to a position where 4 I slot 24 faces generally upward, such that sleeve 10 remains colinearly disposed about bolt 26. - ¦
6 , Sleeve 10 is next inserted through the mounting hole 7 ,'(Fig. 3) until the sleeve is completely through the hole, at 8 which time the sleeve is rotated approximately 180 to dispose 9 slot 24 downwardly to permit the heavier portion 18 to drop to ' a position generally transverse to the axis of bolt 26, as shown ~ in Fig. 4. Bolt 26 is next tightened to draw sleeve lO against 12 1i the rear wall surface 32, as illustrated in Fig 5, to anchor 13 1 the entire toggle bolt assembly in position between wall surfaces 14 i 32 and 34. A picture hook 36 or other item being fastened is !' shown secured to bolt 26 on front wall surface 34. Depending 16 ¦l on the nature of the item being fastened, bolt 26 may or may not 17 need disassembly from sleeve 10 prior to insertion of the sleeve 18 ! through the mounting hole. It will be appreciated that the 19 ¦I toggle bolt can be removed from its mounting hole by reversing 1 the installation procedure described above~
21 ~l In the transverse position, the heavier downward end of 22 , sleeve 10 serves as a pendulous mass such that bolt 26 can be 23 l tightened without pulling the sleeve against the rear wall sur- ¦
24 ~ face, since sleeve 10 tends to remain stationary as the bolt is threaded through the ~ollar. During drilling of a mounting hole, 26 ~ a core of wall material, such as plaster, often remains within 27 sleeve lO and thus adds to the weight and pendulosity of the 28 ¦ heavier sleeve portion. A bushin~ 40 (Fig. 3) can be installed . ''' ' ' . I
! -8--. ~.
~, i 1, i lOS8~3~
1 in the mounting hole in the event that bolt 26 is to be centeréd 2 in the hole.
3 , An alternative embodiment is shown in Fig. 6 in which 4 sleeve lOa includes a slot along its entire length. This sleeve , is typically formed from a flat piece of metal or other suitable 6 material which is then formed into the illustrated tubular shape.
7 ~ The cutting end includes a beveled knife edge 28a providing a ~. i 8 ! circular cutter for formation of the mounting hole. It will be 9 ¦~ appreciated that the novel toggle bolt can be constructed ll variously to suit intended performance requirements. For 11 j' example, the sleeve can be of nonuniform cross section such that .
12 ¦~ the sleeve portions on either side bolt 26, such as portions 18a 13 and 20a in Fig. 6, are of equal length with portion 18a being 14 ~ heavier by virtue of greater cross sectional area of the sleeve I along this portion. The cutting end of the sleeve can also be 16 ~l of various configurations in accordance with the type of material 17 in which a mounting hole is to be provided.
18 ! Accordingly, the invention is not to be limited by what 19 ~ has been particularly shown and described except as indicated in the appended claima.
1 , ' _ g _ ,. , I
.. _. i .... .. _ __. . ,, . . _ ~ _ . _ . . . _ _ .. _.. .. _. .. , . . _ _ .. . .. . _ ._ __.. _ . . . . _
,j The open wings are drawn via the threaded bolt against the rear 11 ~, wall surface and the bolt tightened against the front wall sur-12 ~I face to anchor the fastener, to the front end of which is con-13 !I nected a picture hook, bracket or other item being fastened to 14 j the wall. Such toggle bolts of conventional construction are 1! widely employed and provide good holding action for many purposes.
16 l~ However, a hole must be provided in the wall substantially larger 17 than the bolt diameter to accommodate the relatively large hinged 18 wing assembly which must be passed through the hole to the rear 19 of the wall for anchoring therein. Moreover, the mounting hole ~ must be drilled or reamed by a separate drill bit or other ' ,, . i 1 , suitable tool. As a further disadvantage, the wing assembly can 2 wrongly be installed backwards on the bolt in which event firm 3 ! anchoring is not achieved. The wings must also be drawn against 4 I the rear wall surface to tighten the bolt and pre~ent rotation of the wings.
6 1 Various alternative toggle bolt structures have been 7 1I proposed heretofore. In U.S. Patent 3,782,238 an anchor plate 8 to which a bolt is threaded and secured to the rear surface of 9 a hollow wall is configured to serve as a drill bit for provision ¦
l~ of a mounting opening in the wall. When used as a drill bit, the ~ plate must be disassembled from the fastener bolt and employed 12 , with a conventional hand or power drill, and after the hule is 13 i made, the plate must then be reinstalled onto the fastener bolt 14 ii at a specially configured end thereof such that the plate is 15 ll colinear with the bolt axis for insertion through the mounting 16 ,~ hole. After insertion of th~e~bolt and plate through the hole, 17 ll the bolt is twisted to cause the mounting plate to assume a 18 jl transverse disposition for anchoring against the rear wall sur-19 ¦I face as the bolt is tightened. Other fasteners of known con-¦~ struction are shown in U.S. Patents 2,908,196; 1,409,626;
21 1' 608,717; and 2,578,515.
I, SUMMARY OF THE INVENTION
l 1' Briefly, the present invention provides a relatively t 2 1 simple yet highly efficient and reliable toggle bolt capable 3 1, without disassembly or reassembly of cutting a mounting hole i' , I
. ' I .
i ~3~
., .11 ..... ,...... .... I
`
:1058431 f' 1 through a wall and then being easily installed therein.. The 2 mounting hole is substantially smaller than the hole required 3 for a correspondingly sized toggle bolt of conventional wing 4 ~ construction, and the mounting hole is readily cut by the cutting i portion of the novel structure with minimal tearing or chipping 6 , of the wall surfaces. The novel toggle bolt structure includes -7 i~a generally tubular sleeve having an internally threaded collar 8 '~pivotally mounted at a position along the longitudinal axis of 9 ~; the sleeve such that the sleeve includes a heavier portion between ithe collar and one end and a lighter portion between the collar 11 and the opposite end. A channel or slot is provided in the wall 12 ' of the sleeve extending longitudinally along the lighter portion 13 j of the sleeve, the slot being sized to accommodate a bolt thread-14 , ably mated with the pivotably disposed collar. One end of the , tubular sleeve includes a series of cutting teeth or other cutting 16 'I configuration suitable for cutting a circular o~ening through a 17 !I wall to which the toggle bolt is to be mounted.
18 1 In use, the bolt is threaded through the collar in a 19 1, position generally transverse to the axis of the sleeve and the !' cutting end of the sleeve is positioned on the outer sur~ace of 21 i a wall at the location of the mounting hole. The sleeve is 22 lf rotated or reciprocated manually by use of the outwardly extending 23 ~ portions of the bolt to drill an opening through the wall, the 24 , opening having a diameter approximating the outside diameter of 3 f the sleeve. Alter~atively, the bolt can be removed from the 26 threaded collar and the sleeve inserted into a drill for use as 27 a bit for provision of the mounting hole. After cutting of the 28 mounting hole, the bolt is threaded out of the collar until the f ?
i 1C~58431 1 end of the bolt is within the collar or within the tubular sleeve 2 such that the collar and bolt can be pivoted approximately 9O
3 for alignment of the bolt within the sleeve and generally colinear 4 therewith. In this colinear disposition, the assembly is rotatedi to a position where the slot is facing generally upward such that 6 j~ the sleeve will remain in colinear disposition. The sleeve is v 7 then inserted through the previously provided mounting hole until 8 , the sleeve is completely through the hole, at which time the 9 , sleeve is rotated approximately 180 to dispose the slot down-~ wardly to permit the heavier end of the sleeve to drop to a 11 i position transverse to the axis of the threaded bolt. The bolt 12 is then tightened to draw the sleeve against the rear wall sur-13 1 face, and anchor the bolt.
I,' , ' .
.' 1' ,~ 1i DESCRIPTION OF THE DRAWINGS
1 ¦ The invention will be more fully understood from the -2 i following detailed description taken in conjunction with the 3 , accompanying drawings, in which:
4 ll Fig. 1 is a pictorial view of a toggle bolt according to , the invention;
6 Fig. 2 is a partly sectional side view illustrating 7 1l operation of the invention in cutting a mounting hole;
8 Fig. 3 is a partly sectional side view illustrating 9 insertion of the toggle bolt through a mountlng hole;
Fig. 4 is a partly sectional side view illustrating the 11 disposition of the toggle boit after insertion through a mounting.
li hole ! -.... . . . . . .. .
1 Fig. 5 is a partly sectional side view illustrating the 2 toggle bolt in anchored position; and 3 Fig. 6 is a pictorial view of a toggle bolt of alter- !
4 native embodiment.
1.
¦, DETAILED DESCRIPTION OF THE INVENTION
.
1 A toggle bolt constructed and operative according to the 2 ! invention is illustrated in Fîg. 1 and includes a generally - 3 tubular sleeve 10 of uniform wall thickness and having an 4 ' internally threaded collar 12 pivotally mounted therein by means of pivot pins 14 and 16 cooperative with respective openings 6 i` provided in the wall of sleeve 10 and disposed at an axial 7 j position offset from the longitudinal center of sleeve 10 such 8 ! that the sleeve has a longer and thus heavier portion 18 between 9 " collar 12 and a cutting end 20, and a shorter and lighter por-J~ tion 22 between collar 12 and the opposite end of sleeve 10. A
11 1 slot 24 is provided in the wall of sleeve 10 extending longi-12 ,' tudinally along the shorter portion 22. A bolt or machine 13 ¦ screw 26 is threadably mated with the internal threads of collar 14 l 12 and is of a diameter to pass through slot 24 into longitudinal j generally coaxial alignment with sleeve 10. The cutting end 20 16 ~, of sleeve 10 includes a plurality of cutting teeth 28 or other 17 1l cutting configuration suitable for cutting a circular opening 18 through a wall and in which opening the toggle bolt is to be ~, ; 19 secured.
!
.
. . I
,~
1 ; The sleeve 10 can be of many different materials depending 2 upon the degree of strength required and the nature of the wall 3 material through which an opening must be cut by the cutting end 4 of the sleeve. The sleeve can be, for example, of alumin~ or I stainless steel and can be readily abricated from tube stock in 6 Il which slot 24 is cut and cutting end 20 formed. Alternatively, 7 1l the sleeve 10 can be molded of a suitable plastic material with 8 ~ the entire sleeve configuration integrally formed without addi-9 tional fabricating steps. The collar and its pivot pins are ¦, dimensioned to provide the requisite strength.
11 , For use in cutting a mounting opening through a wall, 12 ' bolt 26 is threaded through collar 12 and through an opening 13 13 il in sleeve 10 in a position generally transverse to the axis of 14 ' sleeve 10, as shown i~ Fig. 2, and cutting end 20 is positioned ' on the outer surface of a wall 29 at the location at which a 16 ~, mounting hole is to be provided. The sleeve and its cutting end 17 ~l is manually rotated or reciprocated by use of the outwardly 18 ! extending portions 30 and 32 of bolt 26 to drill an opening 19 ¦I through the wall, this opening having a diameter approximating ¦I the outside diameter of sleeve 10. A clean hole can be readily 21 1I drilled with minimal tearing or chipping of the wall isurfaces.
22 11 After drilling of the mounting hol.e through the wall, the bolt 26 23 1' is threaded out of collar 12 until the end of the bolt is within 24 I! threaded opening of collar 12 or within sleeve 10 to permit ¦ rotation of the collar and bolt by approximately 90 for axial 26 ; alignment of bolt 26 within sleeve 10. Such pivoting of bolt 26 27 1~ with respect to sleeve 10 can be accompLished with the end por- ¦
28 tion 18 of sleeve 10 within the mounting hole or after removal ' ~, ' i ' . : ~' :
~05843~ ~
I, 1 of sleeve 10 from the mounting hole upon completion of ~he drill-2 ing operation. With bolt 26 in generally colinear disp~sition 3 within sleeve 10, the assembly is rotated to a position where 4 I slot 24 faces generally upward, such that sleeve 10 remains colinearly disposed about bolt 26. - ¦
6 , Sleeve 10 is next inserted through the mounting hole 7 ,'(Fig. 3) until the sleeve is completely through the hole, at 8 which time the sleeve is rotated approximately 180 to dispose 9 slot 24 downwardly to permit the heavier portion 18 to drop to ' a position generally transverse to the axis of bolt 26, as shown ~ in Fig. 4. Bolt 26 is next tightened to draw sleeve lO against 12 1i the rear wall surface 32, as illustrated in Fig 5, to anchor 13 1 the entire toggle bolt assembly in position between wall surfaces 14 i 32 and 34. A picture hook 36 or other item being fastened is !' shown secured to bolt 26 on front wall surface 34. Depending 16 ¦l on the nature of the item being fastened, bolt 26 may or may not 17 need disassembly from sleeve 10 prior to insertion of the sleeve 18 ! through the mounting hole. It will be appreciated that the 19 ¦I toggle bolt can be removed from its mounting hole by reversing 1 the installation procedure described above~
21 ~l In the transverse position, the heavier downward end of 22 , sleeve 10 serves as a pendulous mass such that bolt 26 can be 23 l tightened without pulling the sleeve against the rear wall sur- ¦
24 ~ face, since sleeve 10 tends to remain stationary as the bolt is threaded through the ~ollar. During drilling of a mounting hole, 26 ~ a core of wall material, such as plaster, often remains within 27 sleeve lO and thus adds to the weight and pendulosity of the 28 ¦ heavier sleeve portion. A bushin~ 40 (Fig. 3) can be installed . ''' ' ' . I
! -8--. ~.
~, i 1, i lOS8~3~
1 in the mounting hole in the event that bolt 26 is to be centeréd 2 in the hole.
3 , An alternative embodiment is shown in Fig. 6 in which 4 sleeve lOa includes a slot along its entire length. This sleeve , is typically formed from a flat piece of metal or other suitable 6 material which is then formed into the illustrated tubular shape.
7 ~ The cutting end includes a beveled knife edge 28a providing a ~. i 8 ! circular cutter for formation of the mounting hole. It will be 9 ¦~ appreciated that the novel toggle bolt can be constructed ll variously to suit intended performance requirements. For 11 j' example, the sleeve can be of nonuniform cross section such that .
12 ¦~ the sleeve portions on either side bolt 26, such as portions 18a 13 and 20a in Fig. 6, are of equal length with portion 18a being 14 ~ heavier by virtue of greater cross sectional area of the sleeve I along this portion. The cutting end of the sleeve can also be 16 ~l of various configurations in accordance with the type of material 17 in which a mounting hole is to be provided.
18 ! Accordingly, the invention is not to be limited by what 19 ~ has been particularly shown and described except as indicated in the appended claima.
1 , ' _ g _ ,. , I
.. _. i .... .. _ __. . ,, . . _ ~ _ . _ . . . _ _ .. _.. .. _. .. , . . _ _ .. . .. . _ ._ __.. _ . . . . _
Claims (7)
What is claimed is:
1. A toggle bolt comprising:
a generally tubular sleeve having on an end thereof a cutting configuration suitable for cutting a circular opening through a wall to which the toggle bolt is to be mounted;
an internally threaded collar pivotally mounted in said sleeve at a position along the longitudinal axis of the sleeve such that the sleeve includes a heavier portion between said collar and one end and a lighter portion between said collar and the opposite end of said sleeve;
a slot provided in the wall of said sleeve extending longitudinally between said collar and said opposite end;
a threaded bolt threadably mated with the collar and having a diameter adapted to pass through said slot into longi-tudinal generally coaxial alignment with said sleeve; and an opening through the wall of said sleeve confronting said collar to permit threading of said bolt through said collar and passage through said opening.
a generally tubular sleeve having on an end thereof a cutting configuration suitable for cutting a circular opening through a wall to which the toggle bolt is to be mounted;
an internally threaded collar pivotally mounted in said sleeve at a position along the longitudinal axis of the sleeve such that the sleeve includes a heavier portion between said collar and one end and a lighter portion between said collar and the opposite end of said sleeve;
a slot provided in the wall of said sleeve extending longitudinally between said collar and said opposite end;
a threaded bolt threadably mated with the collar and having a diameter adapted to pass through said slot into longi-tudinal generally coaxial alignment with said sleeve; and an opening through the wall of said sleeve confronting said collar to permit threading of said bolt through said collar and passage through said opening.
2. The toggle bolt of claim 1 wherein said sleeve is of sub-stantially uniform wall thickness and wherein said collar is pivotally mounted in said sleeve at a position offset from the longitudinal center of the sleeve to provide a longer and heavier portion between said collar and one end of the sleeve.
3. The toggle bolt of claim 1 wherein said cutting configuration includes a plurality of cutting teeth circumferentially arranged around an end of said sleeve.
4. The toggle bolt of claim 1 wherein said slot extends longi-tudinally along the entire length of said sleeve.
5. The toggle bolt of claim 1 wherein said cutting configuration includes a beveled knife edge on an end of said sleeve.
6. The toggle bolt of claim 5 wherein said sleeve includes a slot in the wall thereof extending longitudinally along the entire length thereof.
7. The toggle bolt of claim 1 wherein said collar includes a central portion having a threaded hole therethrough for threaded engagement with said bolt, the first and second pivot pins out-wardly extending from respective opposite sides of said collar to define a pivotal axis;
said sleeve having openings in the wall thereof in which said pivot pins are mounted for pivotable disposition of said collar within said sleeve.
said sleeve having openings in the wall thereof in which said pivot pins are mounted for pivotable disposition of said collar within said sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA283,046A CA1058431A (en) | 1977-07-19 | 1977-07-19 | Toggle bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA283,046A CA1058431A (en) | 1977-07-19 | 1977-07-19 | Toggle bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1058431A true CA1058431A (en) | 1979-07-17 |
Family
ID=4109170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA283,046A Expired CA1058431A (en) | 1977-07-19 | 1977-07-19 | Toggle bolt |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1058431A (en) |
-
1977
- 1977-07-19 CA CA283,046A patent/CA1058431A/en not_active Expired
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