U.S. patent application number 12/117301 was filed with the patent office on 2009-07-30 for resin mixing and cable tensioning device and assembly for cable bolts.
Invention is credited to Ben L. Seegmiller.
Application Number | 20090191007 12/117301 |
Document ID | / |
Family ID | 46331839 |
Filed Date | 2009-07-30 |
United States Patent
Application |
20090191007 |
Kind Code |
A1 |
Seegmiller; Ben L. |
July 30, 2009 |
Resin Mixing and Cable Tensioning Device and Assembly for Cable
Bolts
Abstract
The present invention is directed to a device and assembly for
the anchoring and tensioning of cable bolts used in earthen
formations to stabilize the earthen structures to prevent or
minimize the caving in or sluffing-off of the earthen structure.
The new invention presents an integral wedge barrel and threaded
sleeve which can be turned to facilitate both the mixture of
cementing resins and the physical tensioning of an anchored cable
and which can reduce or prevent undesirable twisting of the cable
during tensioning.
Inventors: |
Seegmiller; Ben L.; (Salt
Lake City, UT) |
Correspondence
Address: |
KIRTON AND MCCONKIE
60 EAST SOUTH TEMPLE,, SUITE 1800
SALT LAKE CITY
UT
84111
US
|
Family ID: |
46331839 |
Appl. No.: |
12/117301 |
Filed: |
May 8, 2008 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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12022051 |
Jan 29, 2008 |
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12117301 |
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Current U.S.
Class: |
405/259.5 |
Current CPC
Class: |
E21D 21/008 20130101;
E21D 21/0086 20130101; E21D 21/006 20160101 |
Class at
Publication: |
405/259.5 |
International
Class: |
E21D 20/00 20060101
E21D020/00 |
Claims
1. A cable bolt tensioning device comprising: an integral wedge
barrel and threaded sleeve configured to receive a cable, the
threaded sleeve disposed in an aperture of a bearing plate; and
means for substantially preventing the rotation of the cable in the
aperture.
2. The device of claim 1 further comprising wedges disposed within
the wedge barrel.
3. The device of claim 1 wherein the bearing plate comprises one or
more projections to engage an adjacent surface.
4. The device of claim 1 wherein the means for substantially
preventing the rotation of the cable in the aperture comprises
mating surfaces of the threaded sleeve and of the aperture of the
plate wherein the mating surface of the threaded member is a
substantially flat surface.
5. The device of claim 1 wherein the means for substantially
preventing the rotation of the cable in the aperture comprises
mating surfaces of the threaded sleeve and of the aperture of the
plate wherein the mating surface of the threaded member is a keyway
into which a portion of plate projects.
6. A cable bolt assembly comprising: an integral body comprising
wedge barrel and threaded sleeve configured to receive a cable; a
bearing plate defining an aperture therethrough, the threaded
sleeve disposed in the aperture; one or more cables disposed within
the integral body; wedges disposed within the wedge barrel between
the wedge barrel and the cable(s); and a nut disposed about the
threaded sleeve, the nut having threads compatible with the
threaded sleeve; and means for substantially preventing the
rotation of the cable(s) in the aperture.
7. The assembly of claim 6 further comprising a bearing plate
disposed about the threaded sleeve such that the nut is disposed
between the integral body and the bearing plate.
8. The assembly of claim 6 further comprising one or more washers
disposed about the threaded sleeve portion between the nut and the
bearing plate.
9. The assembly of claim 6 further comprising a sleeve cover
disposed along a length of the threaded sleeve.
10. The device of claim 6 wherein the bearing plate comprises one
or more projections to engage an adjacent surface.
11. The device of claim 6 wherein the means for substantially
preventing the rotation of the cable in the aperture comprises
mating surfaces of the threaded sleeve and of the aperture of the
plate.
12. The device of claim 11 wherein the mating surface of the
threaded sleeve is a substantially flat surface.
13. The device of claim 11 wherein the mating surface of the
threaded sleeve is a keyway into which a portion of plate
projects.
14. A cable bolt assembly comprising: an integral wedge barrel and
threaded sleeve configured to receive a cable, the threaded sleeve
disposed in an aperture of a bearing plate; and means for
substantially preventing the twisting of the cable during
tensioning.
15. The device of claim 14 wherein the bearing plate comprises one
or more projections at or near the periphery of the plate to engage
an adjacent surface.
16. The device of claim 14 wherein the means for substantially
preventing the twisting of the cable during tensioning comprises
mating surfaces of the threaded sleeve and of the aperture of the
plate combined with one or more projections on the learning plate,
wherein the mating surface of the threaded sleeve is a
substantially flat surface.
17. The device of claim 14 wherein the means for substantially
preventing the twisting of the cable during tensioning comprises
mating surfaces of the threaded sleeve and of the aperture of the
plate combined with one or more projections on the learning plate,
wherein the mating surface of the threaded sleeve is a keyway into
which a portion of the plate projects.
Description
RELATED INVENTIONS
[0001] This application is a Continuation-in-Part of my co-pending
application Ser. No. 12/022,051 filed on Jan. 29, 2008, for Resin
Mixing and Cable Tensioning Device and Assembly For Cable
Bolts.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a device and assembly for
cable bolt systems. In particular, the present invention relates to
cable bolt apparatus which can be used to both mix associated cable
resin and to tension the cable bolt assembly against a bearing
plate.
[0004] 2. Background and Related Art
[0005] Steel bolts and cable bolts are commonly used in underground
mines to stabilize geologic layers adjacent mine openings. For
example, cable bolt assemblies are used to secure the geologic
layers of the roof of a mine tunnel or drift to prevent roof strata
from falling and causing obstructions or injury to persons or
equipment in the tunnel.
[0006] Rigid members such as steel rods or rebar have long been
used in anchoring systems in construction applications and as rock
bolts in mining applications. For example, threaded rebar
manufactured and sold by DYWIDAG under the brand name Threadbar has
been used for rock bolts for years. Anchoring such rods or rebar at
one end or at both ends allows the rod to bear a tension load.
Steel rods have been particularly useful in anchoring applications
because threads can be formed on the outer surface of the rods to
receive desired bolts with corresponding threads or to receive
other fastening devices such as a Frazer-Jones D9 expansion shell
assembly. Rigid steel rods are, however, not always ideal because
they are manufactured in finite, fixed lengths and long rods are
often difficult to work with in confined spaces such as
construction and mining sites. Rigid rods can also be subject to
shearing stresses if, for example, there is ground movement
adjacent the rod in a mining application.
[0007] Steel cables comprising multiple strands of steel have also
been used as anchoring systems. Unlike rigid, steel rods, cables
provide some flexibility along their length. That is, a cable can
bent around an object or deflect when subject to ground movement
adjacent the cable. In some instances, steel cable is easier to use
in confined spaces. Historically, anchoring a cable at one or both
ends is more difficult because the cable does not bear threads to
receive bolts. A number of cable anchoring methods have been used.
One example is a multistrand anchorage device which separates
strands of the cable and anchors each strand individually or in
groups such as the DYWIDAG Multistrand Posttensioning System.
Another example comprises positioning a thread-bearing sleeve along
the length of the cable at the desired locations to receive a
desired bolt or Frazer-Jones D9 expansion shell assembly.
[0008] Another example includes unraveling the cable and sliding a
ring over and down along the center or king wire of the cable to a
desired location and then rewinding the cable. In this way, a bulge
or `bird cage` is formed in the cable due to a spreading of the
wires in the area of the ring. The bulge or spreading of the wires
permits resin used with the cable to permeate into the cable to
enhance anchorage of the cable upon the setting of the resin. If
mechanical anchorage is also desired, an additional thread-bearing
or thread-like-bearing apparatus must still be added if a desired
bolt or Frazer-Jones D9 expansion shell assembly is to be used.
[0009] A number of devices rely upon a thread-bearing sleeve being
disposed about the cable or other threaded systems to tension a
cable. The sleeve is positioned relative to the cable or other
threaded systems which are used to tension the cable including:
[0010] (1) placing a threaded tube and clamping it on the
cable;
[0011] (2) threading the cable itself;
[0012] (3) placing and securing the cable inside a threaded bar
such as a DYWIDAG threadbar.RTM. with a hole in it; and
[0013] (4) using a threaded insert which is placed over the king
wire and then threaded inside a Frazer-Jones D9 expansion shell
assembly.
[0014] A number of cable and other bolt assemblies are known,
including those taught by U.S. Pat. Nos. 2,667,037, 3,077,809,
4,509,889, 4,954,017, 4,984,937, 5,015,125, 5,026,517, 5,215,411,
5,230,589, 5,259,703, 5,375,946, 5,378,087, 5,441,372, 5,458,442,
5,525,013 and others.
[0015] These techniques include drilling a long hole into the
earthen geology which is to be stabilized. A requisite amount of
multi-component epoxy resin is placed in the hole at the desired
location. The steel cable is also placed in the hole. A machine is
used to spin the cable thereby mixing the multi-component epoxy to
cause the chemical reaction between the multi-components. The epoxy
sets and anchors the cable in the hole.
[0016] Known techniques for mixing multi-component epoxy include
mechanical devices designed to spin the cable at a relatively low
torque to mix the epoxy components followed by tensioning the cable
using increased torque after the cable is cemented in place. The
mechanical devices include known and available domed nuts, crimped
bolts, perpendicular roll pins, shear pins, weld beads, and keys
ways which permit spinning a nut or other structure on a threaded
sleeve at a low torque without compromising or defeating the
ability of the domed nuts, crimped bolts, perpendicular roll pins,
shear pins, weld beads, and keys ways to at least temporarily fix
the relative position of the nut and threaded sleeve affixed to the
cable. In this way, the spinning of the cable mixes the epoxy resin
components. After the cable is cemented in place, a higher torque
is then applied, typically in the same direction as the low torque,
to tension the cable which use of higher torque does compromise or
defeat the ability of the domed nuts, crimped bolts, perpendicular
roll pins, shear pins, weld beads, and keys ways to fix the
relative position of the nut and threaded sleeve.
[0017] When tensioning a steel cable, it is not uncommon for the
cable itself to twist somewhat between the point of application of
torque for tensioning and the point at which the cable is cemented
in place. This can cause a slight decrease in the length of the
cable. Upon release of the torquing device the cable can untwist
thereby returning to its longer repose length and causing an
undesirable decrease in the tension on the cable.
[0018] Accordingly, it would be an improvement in the art to
augment or even replace current techniques with simpler devices and
devices which permit the use of power tools which apply torque in
opposing directions and avoid unwanted decrease in tensioning of
the cable after removal of the torquing tool.
SUMMARY OF THE INVENTION
[0019] The present invention relates to an integral wedge barrel
and threaded sleeve which can be used for both spinning to mix
epoxy resin and used to tension a cable bolt.
[0020] The present invention contemplates a unitary or integral
wedge barrel and threaded sleeve with a rotatable nut about the
threaded sleeve. The threaded sleeve is disposed in an aperture of
a bearing plate. A cable is disposed through the threaded sleeve
and through the wedge barrel. The cable is fixed in place relative
to the wedge barrel by common barrel wedges. When assembled the
cable is fixed relative to the wedge barrel. The threaded sleeve is
fixed relative to the barrel because the threaded sleeve and wedge
barrel are either manufactured as one integral unit or are joined
together in a fixed relationship by means of welding or some other
common joining practice.
[0021] In use, the device permits reliable mixing of epoxy resin
components by rotating the nut until it abuts the wedge barrel
whereupon the cable will spin in the direction the nut is being
turned. This turning or spinning action can be used to mix the
epoxy resins.
[0022] In some applications, after the epoxy resin is set and the
cable cemented in place, the nut may be turned or spun in the
opposite direction causing the nut to move away from the wedge
barrel and move toward the opposing bearing plate against which the
nut can be forced by applying high torque to the nut whereby the
cable is put under tension. In other applications it may be
necessary to use known techniques thereby turning the cable in the
same direction for both mixing and tensioning.
[0023] The bearing plate may comprise one or more projections or
protrusions from the face or edge of the bearing place toward the
surface against which the bearing place is disposed. This provides
points of contacts between the bearing plate and for example an
earthen or rock surface to reduce or prevent the bearing place
resting against a surface from spinning when the cable is being
tensioned.
[0024] The structure of the aperture of the bearing plate and the
threaded sleeve disposed in the aperture permit the threaded sleeve
to slide through the bearing plate to permit tensioning while at
the same time reducing or preventing any twisting of the
cable-bearing threaded sleeve within the aperture.
[0025] While the methods and processes of the present invention
have proven to be particularly useful in the area of cable bolt
tensioning, those skilled in the art can appreciate that the
methods and processes can be used in a variety of different
applications and in a variety of different areas of manufacture to
yield an equivalent device.
[0026] These and other features and advantages of the present
invention will be set forth or will become more fully apparent in
the description that follows and in the appended claims. The
features and advantages may be realized and obtained by means of
the instruments and combinations particularly pointed out in the
appended claims. Furthermore, the features and advantages of the
invention may be learned by the practice of the invention or will
be obvious from the description, as set forth hereinafter.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order that the manner in which the above recited and
other features and advantages of the present invention are
obtained, a more particular description of the invention will be
rendered by reference to specific embodiments thereof, which are
illustrated in the appended drawings. Understanding that the
drawings depict only typical embodiments of the present invention
and are not, therefore, to be considered as limiting the scope of
the invention, the present invention will be described and
explained with additional specificity and detail through the use of
the accompanying drawings in which:
[0028] FIG. 1 illustrates a perspective view of one embodiment of
the device and system that provides a suitable structure and
function for the present invention;
[0029] FIG. 2 illustrates a cross-sectional view of an embodiment
of the present invention;
[0030] FIG. 3 illustrates a cross-sectional view of an embodiment
of the present invention;
[0031] FIG. 4 illustrates use of the present invention with a
breakaway view of a cable cemented into a geological formation.
[0032] FIG. 5 illustrates a perspective view of another embodiment
of the bearing plate;
[0033] FIG. 6 illustrates a perspective view of another embodiment
of the a threaded sleeve with at least one flatten side;
[0034] FIG. 7 illustrates a cross-sectional view of another
embodiment;
[0035] FIG. 8 illustrates a cross-sectional view of another
embodiment;
[0036] FIG. 9A illustrates a partial cross-sectional view along
line A of FIG. 8 depicting the relationship between a bearing plate
and a threaded sleeve;
[0037] FIGS. 9B, 9C and 9D illustrate partial cross-sectional views
of alternative embodiments of FIG. 9A;
[0038] FIG. 10 illustrates use of another embodiment of the present
invention with a breakaway view of a cable cemented into a
geological formation.
DETAILED DESCRIPTION OF THE INVENTION
[0039] The present invention relates to a device for use in
anchoring and tensioning cables or cable bolts to stabilize walls
or ceilings in earthen bodies such a mines or other underground
openings. In particular, the present invention is directed to a
integral device which both facilitates mixing the epoxy resins used
to anchor the cable bolt in the earthen body and tensioning the
cable bolt after it is anchored in place. The present invention
contemplates an integral wedge barrel used to capture a cable bolt
and a threaded sleeve about the cable bolt.
[0040] FIG. 1 and the corresponding discussion are intended to
provide a general description of one embodiment of the present
invention. One skilled in the art will appreciate that the
invention may be practiced by one or more embodiments in a variety
of configurations. Mixing and tensioning assembly 10 is shown in
perspective view. Assembly 10 comprises cable or cable bolt 20, an
integral body 30 of a wedge barrel and threaded sleeve disposed
about cable bolt 20, nut 40 disposed along integral body 30 and
bearing plate 50. Cable bolt 20, nut 40 and bearing plate 50 are
all commonly known, used and available cable bolt components.
[0041] As depicted in FIG. 2, device or integral body 30 comprises
a wedge barrel end 32 defining sloped interior surface 34 to
receive a plurality of wedges 36. Integral body 30 further
comprises a threaded sleeve portion 38. While the preferred
embodiment contemplates integral body 30 being a continual unitary
member, a person of skill in the art would recognize that other
embodiments would contemplate an interface between a wedge barrel
and a threaded sleeve achieved via a weld between a wedge barrel
and a threaded sleeve, via a recessed barrel with a mating surface
corresponding to a mating end of a threaded sleeve, via screwing
the threaded sleeve into the wedge barrel, or via prongs on one end
of the threaded sleeve engaging apertures in the wedge barrel, all
to fix the interrelationship between the wedge barrel and the
threaded sleeve. The result in all embodiments being a
interdependent wedge barrel and threaded sleeve which when either
part is acted upon by a force the same or substantially similar
force is also transmitted to the other part of the integral body
30.
[0042] Cable bolt 20 is disposed within integral body 30. As is
commonly known in the art, wedges 36 disposed between cable bolt 20
and wedge barrel 32 act by friction and/or other forces to fix
cable bolt 20 within integral body 30 such that force along bolt 20
is transmitted to integral member 30 and vice versa.
[0043] Nut 40 is disposed along a length of body 30 between wedge
barrel portion 32 and bearing plate 50. Nut 40 can be turned in
both directions. As shown in FIG. 2, when nut 40 is turned until it
abuts wedge barrel 32, then upon abutting wedge barrel portion 32,
further turning of nut 40 will cause both body 30 and bolt 20 to
turn or spin in the same direction. This spinning can be used to
spin cable bolt 20 to mix epoxy resins as discussed below.
[0044] As shown in FIG. 3, nut 40 can also be turned in the
opposite direction until it abuts bearing plate 50, or one or more
optional washers 60 constructed of metal and/or HDEP, Teflon,
nylon, or similar materials to reduce friction. As known in the
art, plate 50 may be dome-shaped. Bearing plate 50 defines a plate
aperture 52 to permit plate 50 to move independent of body 30.
Similarly, optional washer 60 defines a washer aperture 62 to
permit washer 60 to move independent of body 30. Upon abutting
plate 50 or washer 60, continued turning or spinning of nut 40 in
the same direction puts a force upon plate 50 thereby putting cable
bolt 20 in tension as plate 50 is forced against a geologic
formation such as rock, dirt or mineral. It will be appreciated
that threaded sleeve portion 38 is of a sufficient length to permit
tensioning and, as needed, retensioning of cable bolt 20. Threaded
sleeve portion 38 may be about twelve inches or longer or shorter
depending on the geologic conditions of use.
[0045] The present invention permits universal use of assembly 10.
For example, when sleeve threads are right-handed threads as is
typical in coal mines, tools are used that are able to turn nut 40
in either direction as depicted in FIGS. 2 and 3.
[0046] When sleeve threads are left-handed threads as is typical in
hard rock mines, jack-legs are typical tools used to turn nuts 40
but are able to turn nut 40 in only one direction to force nuts 40
against bearing plates 50. When tools such as unidirection
jack-legs are used, the present invention further comprises means
for providing a temporary, fixed interface between nut 40 and
threaded sleeve portion 38. The temporary, fixed interface between
nut 40 and threaded sleeve portion 38 can be accomplished by known
techniques previously discussed including but not limited to known
frictional interfaces, weld beads, roll pins, keyway with keys,
buggered threads, domed nuts, or crimped sleeves. As a result,
turning of nut 40 also turns sleeve portion 38 which turns cable
20. This commonly known unidirection turning of nut 40 can be used
to both mix epoxy resins at a lower torque and then at higher
torque to overcome, break or shear the temporary, fixed interface
to place bolt 20 under tension.
[0047] An optional sleeve cover, not shown, extends along the
length of threaded portion 39 from nut 40 through plate aperture 52
towards the end of portion 38 to protect the threads of portion 38
from being damaged or compromised prior to use. The sleeve cover is
disposed about threaded portion 38 and can comprise plastic, soft
metal, rubber, cardboard or any other suitable material capable of
protecting the threads of sleeve portion 38 from damage prior to
use.
[0048] Embodiments of the present invention may comprise other
structural features. Bearing plate 50 may comprise one or more
projections or protrusion toward the bearing surface. For example,
FIGS. 5 and 7 depict projections 54 which may imbed into or catch
onto the bearing surface or onto or into appliances such as metal
mesh upon a bearing surface. In place, projections 54 reduce or
prevent bearing plate 50 from spinning when torque is applied to
tension the cable. As depicted in FIG. 8, alternative projections
or protrusions 56 may be employed. Projections 56 could be prepared
by casting, machining or by adding material to plate 50 such as by
welding. FIG. 8 also depicts other alternative projections 57 which
may be formed by a punching or stamping process during manufacture
of plate 50. In all cases, projections 54, 56 or 57 act to engage
the surface or surfaces against which bearing plate 50 is
positioned to reduce or prevent movement or spinning of plate
50.
[0049] Threaded member 38 may comprise one or more exterior shapes
with a corresponding, opposing and mating shape in the aperture 52
of bearing plate 50, all designed to permit threaded member 38 to
slide through aperture 52 of plate 50 but also reduce or prevent
threaded member 38 from spinning within aperture 52. For example,
FIG. 6 depicts threaded member 38 with flattened side 39. FIG. 9A
depicts a corresponding, opposing flattened aperture wall 58 of
plate 50 which mates with surface 39. FIG. 9B depicts another
illustrative embodiment comprising threaded member 38 with two
flattened side walls 39 within two corresponding, opposing
flattened aperture walls 58 which mate with surfaces 39. FIG. 9C
depicts another illustrative embodiment comprising threaded member
38 with keyway 39 with a corresponding, opposing key projection 58
of plate 50 projecting into keyway 39 which mates with surface 39.
FIG. 9D depict another illustrative embodiment comprising an
alternative threaded member 38 with keyway 39 with a corresponding,
opposing key projection 58 of plate 50 projecting into keyway 39
which mates with surface 39. These embodiments are merely
illustrative of one or more opposing surfaces 39 and 58 which
permit member 38 to pass through plate 50 but reduce or prevent
member 38 from turning or spinning independent of member 38's
relationship to or position in plate 50. One skilled in the art may
recognize other such structures. The structure and function of
embodiments illustrated in FIGS. 9A-D are examples of means for
substantially preventing the rotation of threaded member 38 and
cable 20 when disposed through plate 50.
[0050] The structure and function of embodiments illustrated in
FIGS. 9A-D combined with projections 54, 56, or 57 are examples of
means for substantially preventing the twisting of cable 20 during
tensioning. That is, the means for substantially preventing the
twisting of cable 20 during tensioning reduces or prevents the
undesirable twisting, shortening and/or lengthening of cable 20
during or after tensioning. The present invention reduces or
prevents back-spin of the cable after release from the torquing
tool. These devices and techniques may also be used in certain
mining operations that use cement grouting systems which require no
mixing but utilize similar tensioning of a cable.
[0051] As depicted in FIGS. 4 and 10, the subject wall, roof, or
floor of a geologic structure 70 is drilled to create drill hole
72. Epoxy resin components are placed in hole 72 at the desired
location. Assembly 10, preassembled and comprising cable 20, body
30, nut 40 and bearing plate 50 is placed such that cable 20 is
inserted into hole 72 to a depth so a portion of cable 20 is
inserted through or adjacent the epoxy resin components in hole 72.
Nut 40 is turned in the desired direction causing cable 20 to spin
in hole 72 to mix the epoxy components to create a epoxy resin or
cement 80 which acts to anchor cable 20 in hole 72. Cable 20 is
thrust into hole 72 to the desired depth with the entire device 10
thrust against wall 70 and held in place until the resin sets.
After the resin or cement is set and cable 20 is anchored in hole
72, nut 40 is again turned in the desired direction to further
force nut 40 against bearing plate 50, or washer 60. This pushes
plate 50 against wall 70 putting cable 20 under tension. The
appropriate tension is placed upon cable 20 to help stabilize wall
70. After tensioning, the preferred installation contemplates
removing the thrust force by withdrawing the tensioning tool about
one quarter inch away from the washer 60 or plate 50 to ensure that
the tool is not experiencing friction loss against the washer 60 or
plate 50 and nut 40 is again turned for further tensioning. A
plurality of assemblies 10 are used over an area to prevent
geologic structures 70 from caving in and causing injury to persons
or equipment.
[0052] The devices depicted in FIGS. 5-10 provided the added
advantage of having bearing plate 50 affirmatively engage wall 70
or any appliance thereon via projections 54, 56, or 57 to reduce or
prevent movement of plate 50 vis-a-vis wall 70. When torque is
applied to tension cable 20, member 38 may move laterally through
plate 50 in the direction of the cable as needed for tensioning.
However, because of surfaces 39 and 58 member 38 is not permitted
to spin or rotate within aperture 52 of plate 50. As a result,
cable 20 is held in a relatively fixed orientation to wall 70
thereby reducing or preventing twisting of cable 20 between the
point of application of torque for tensioning and the point of
cementation or anchorage in wall 70 during or after tensioning.
[0053] While the Figures only depict a single cable comprising a
plurality of wound or twisted wires, the present invention also
contemplates assembly 10 being capable of receiving and securing a
number of cables 20 as illustrated in U.S. Pat. No. 5,525,013.
[0054] Thus, as discussed herein, the embodiments of the present
invention embrace an assembly 10 comprising a device which can be
turned to facilitate both mixing resin or cement to anchor cable 20
and to put cable 20 under the desired tension to secure the
adjacent surface.
[0055] The present invention may be embodied in other specific
forms without departing from its spirit or essential
characteristics. The described embodiments are to be considered in
all respects only as illustrative and not restrictive. The scope of
the invention is, therefore, indicated by the appended claims
rather than by the foregoing description. All changes that come
within the meaning and range of equivalency of the claims are to be
embraced within their scope.
* * * * *