CA1084031A - Cable clamps for spacer dampers - Google Patents
Cable clamps for spacer dampersInfo
- Publication number
- CA1084031A CA1084031A CA285,898A CA285898A CA1084031A CA 1084031 A CA1084031 A CA 1084031A CA 285898 A CA285898 A CA 285898A CA 1084031 A CA1084031 A CA 1084031A
- Authority
- CA
- Canada
- Prior art keywords
- keeper
- clamp
- clamp body
- cable
- aperture
- 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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- Installation Of Indoor Wiring (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A cable clamp for use with a spacer damper comprises a clamp body and a keeper which cooperate to define a cable receiving opening. A clasp is pivotally mounted on the body and is swingable to engage the keeper and retain it in a clamping position. A resilient liner is placed in the open-ing for gripping the cable and biases the keeper against the clasp.
A cable clamp for use with a spacer damper comprises a clamp body and a keeper which cooperate to define a cable receiving opening. A clasp is pivotally mounted on the body and is swingable to engage the keeper and retain it in a clamping position. A resilient liner is placed in the open-ing for gripping the cable and biases the keeper against the clasp.
Description
1~84~3~
The present invention relates to cable clamps for spacer dampers.
Spacer dampers for use with bundle conductors comprising a plurality of sub-conductors or cables are provided with a plurality of cable clamps for resiliently securing the sub-conduc-tors or cables to the spacer dampers.
To enable a spacer damper to function successfully in service, it must be provided with cable clamps which provide an adequate and continuous clamping pressure on the sub-conductors, since loss of clamping pressure results in abrasive damage to the sub-conductors and loss of bundle restoration torque. ~tionally, the cable clamps must have the ability to compensate for various natural phenomena such as cold flow (creep) of the aluminium strands which normally form the sub-conductors, and high cycli-cal stresses resulting from differential coefficients of expansion.
The clamping stress on the sub-conductors should be kept to a minimum to avoid damaging the latter, but the gripping or clamping strength should be sufficient to resist bundle rota-tional movement caused by unequal ice loading, electrical short circuit forces, conductor galloping and any other external force imposed on the conductor, and also to resist longitudinal slip caused by unequal ice loading of the sub-conductors.
To facilitate field installation and maintenance of the spacer dampers, it is also desirable to design the cable clamps so that all of the components thereof are captive, which eliminates any necessity for removing any of these components when the clamps are secured to and removed from the sub-conductors.
Conventional cable clamps use a threaded fastener as a means of applying clamping pressure for securing the cable clamps to the sub-conductors. However, the use of a threaded fastener -- 1 -- ;
~ .
1~84~31 for this purpose can result in a wide range of clamping pressure due to variations in the application of torque to the threaded fastener. For example, U.S. Patent 3,161,721 to Torr discloses a device in which the cable is clamped between a pair of pivot-ally connected jaws. The jaws are heldin theirclamping position by a lockingdevice comprising a headedshank extending firstly through a hole or slot in one of the jaws with its head abuttingagainst that jaw,and secondly through a slot in the other jaw. The shank has a transverse cotter which i8 adapted to overlie the otherjaw.
During assembly of the clamp it is necessary to ensure that the orientationof the cotteris suchthat itmay passthrough the slotin the otherjaw. The shank must then be rotated about its longitudinal axis to move the cotter into an overlying position.
Since the shankhas limitedlongitudinal movement it is essential that thehead is heldagainst thejaw duringassembly and whilstthe shank is rotated. This is both inconvenient and time consuming.
It is an object of the present invention to provide a novel and improved cable clamp for use in a spacer damper, which cable clamp at least partially fulfills these requirements.
According to the present invention there is provided a cable clamp for use with a spacer damper assembly, the clamp com-prising a clamp body unting means on the clamp body for connect-ing the cable clamp to a spacer damper assembly; a keeper movable relative to the clamp body into a clamping position and having an elongate nose extending toward the mounting means; pivot means at the opposite end of the body to the mounting means to pivot-ally connect the keeper and the clamp body; wall means on the clamp body and the keeper intermedîate the pivot means and the mounting means defining, in the clamped position, an aperture to receive a cable; keeper retaining means operable to retain the ~ - 2 -- 108403~
body and the keeper in the clamped posit~on, the keeper retain-ing means including a rigid clasp pivotally mounted on the clamp body intermediate the ends thereof between the wall means and the mounting means fior pivotal movement of the rigid clasp in a plane perpendicular to the aperture and swingable in the plane to release the keeper and permit relative movement of the keeper and the body; and a resilient liner within the aperture for gripping engagement around at least a portion of a cable, the liner being compressed by the body and the keeper in the clamped position and biasing the keeper and the clasp into mutual engage-ment; the rigid clasp including a pair of spaced arms intercon-nected by an intermediate portion spaced from the clamp body, the intermediate portion engaging the elongate nose on the keeper to retain the body and the keeper in the clamped position.
Preferably the clasp has a pair of spaced apart arms interconnected by an intermediate portion spaced from the clamp body for engaging a portion of the keeper.
Preferably the pivot means comprises an inturned por-tion at the extremity of each arm of the clasp, each inturned portion being received in an opening in the clamp body.
The keeper portion, which may be formed as a projection in the form of a nose, preferably has a transverse groove for engagement with the intermediate portion of the keeper. The groove and the openings in the clamp body which are engaged by the inturned arm ends of the clasp may be positioned so that the clasp arms detend at an acute angle to a plane containing the axis of pivotationof the keeperrelative to the clamp body and the \l ~ ~ 3 ~
longitudinal axis of the liner, the retainer being inclined in direction extending from the cable receiving opening and away from the liner when the intermediate portion is engaged in the groove.
The invention will be more readily understood from the following description of a preferred embodiment thereof given, by way of example, with reference to the accompanying drawing, in which:
FIGURE 1 shows a view taken in perspective of a cable clamp embodying the present invention, the cable clamp being shown in a partly assembled condition;
FIGURE 2 shows a view in transverse elevation of a part of a liner forming part of the cable clamp of Figure l;
FIGURE 3 shows an end view of the liner part shown in Figure 2;
- 3a .
--- iO84031 The cable clamp illustrated in the accompanying drawing has a clamp body 10 and a keeper 11. At one of its ends, the clamp body 10 is formed with a projection 12, which fits between projections 14 at the corresponding end of the keeper 11, the projections 12 and 14 being rounded to allow pivotation of the keeper 11 relative to the clamp body 10 about a transverse axis.
Borings, of which one is indicated by reference numeral 15, are provided in the projections 14 and are in alignment with a boring (not shown) through the projection 12, these three bor-ings having a common axis coinciding with the above-mentioned axis of pivotation of the keeper 11.
A pivot pin 16 having a splined central portion 17 fits into the above-mentioned borings with its cylindrical end por-tions in the borings 15 of the projections 14 on the keeper 11, and with its central portion engaging the wall of the boring in -the clamp body projection 12 with sufficient friction to retain the pivot pin 16 in position relative to the clamp body 10 and the keeper 11.
The clamp body 10, at the top thereof as viewed in Figure 1, is formed adjacent the projection 12 with an upwardly facing recess 18, and the keeper 11, adjacent the projections 14 thereof, is formed with a corresponding recess 19.
Adjacent the reoess 18, the clamp body 10 is formed with a further recess 20 which extends between opposed, spaced, parallel and upstanding side walls 21.
The end of the keeper 11 opposite from the projections 14 is formed with a projection in the form of a nose 23 which is shaped to be received between the walls 21 on pivotation of the keeper 11 in a clockwise direction, as viewed in Figure 1, to-wards the clamp body 10.
iO84031 The above-described cable clamp is further provided with a resilient liner having two longitudinally separate halves 25 and 26 which, when the clamp is assembled, are received in the recesses 18 and 19, respectively, and which are identical to one another. Preferably, the liner halves 25 and 26 are made of a resilient polyisoprene material or rubber. However, these liner halves 25 and 26 may be made of any other elastomer which is suitable for use in cable clamps.
As can be seen from Figures 2 and 3, taken in conjunc-tion with Figure 1, the liner half 26 has a cylindrical innersurface 28, an outer surface comprising oppositely`divergent frusto-conical coaxial surfaces 29 and 30, flat semi-annular end faces 31 and 32 and flat coplanar side surfaces 33 and 34.-The cylindrical inner surface 28 of the liner half 26is knurled to enable the liner half to securely grip the cable.
The frusto-conical surfaces 29 and 30 merge smoothly mid-way along the length of the liner half 26 and provide a peri-pheral concavity extending around the liner half 26 from the surface 33 to the surface 34. As can be seen in Figure 3, this concavity is interrupted by a round projection 36, which is formed in one piece with the remainder of the liner half 26 and which is also located midway along the length of the liner half 26. The rounded projection 36 is shaped to extend into a corres-ponding boring 37 provided in the recess 19 of the keeper 11, and thus serves to releasably secure the liner half 26 to the keeper 11 .
The recess 19 in the keeper 11 is formed with outwardly divergent frusto-conical surfaces 38 and 39 corresponding in shape and conical ~ngles to the frusto-conical surfaces 29 and 30 of the liner half 26.
iO8~031 As mentioned above, the liner half 25 is identical to the liner half 26, and the recess 18 of the clamp body 10 is formed with outwardly divergent frusto-conical surfaces similarly corresponding to those of the liner half 25, which also has a rounded projection (not shown) corresponding to the projection 36 and mating with a boring (not shown) in the clamp body 10 for releasably securing the liner half 25 to the latter.
For retaining the keeper 11 in a clamping position, in which the keeper nose 23 extends partially into the recess 20, the clamp body 10 is provided with a keeper retainer in the form of a U-shaped clasp indicated generally by reference numeral 40.
The clasp 30 has an intermediate or bridge portion 41 .
extending between opposite parallel arms 42, and the arms 42 have inturned ends, one of which is indicated by reference numeral 43 in Figure 1, which fit into openings, of which one is indicated by reference numeral 44, in opposite sides of the clamp body 10, the inturned ends of the clasp 40 being pivotable in these openings.
The nose 23 of the keeper 11 is formed, at its upper side, with a transverse groove 46 for engagement with the intermediate portion 41 of the clasp 40.
Also, the intermediate portion 41 of the clasp 40 is spaced from the clamp body 10, and more particularly from the bottom of the recess 20, by a distance which is not merely suff-icient to receive the nose portion 23 therebetween but which enables the keeper 11 to be pivoted downwardly into the recess 20 beyond its normal clamping position in order to enable the intermediate portion 41 of the clasp 40 to be pivoted past the outer end of the keeper nose to and from the groove 46.
As will be readily apparent to those skilled in the art, when the above-described cable clamp is in use and a subconductor iO84031 in the form of a cable is clamped between the two halves 25 and 26 of the liner, the keeper 11 being in its above-described clamping position with the intermediate portion 41 of the clasp engaging with the groove 46, the compressed liner halves 25 and 26 resiliently bias the keeper 11 against the clasp 40, thus ensuring that the intermediate portion 41 of the clasp 40 remains engaged in the groove 46.
To enable the keeper 11 to be pivoted against the resilience of the liner and into and beyond its normal clamping 10 position, a manually operable screw clamp of known type may be employed during the fitting of the cable clamp onto its cable to enable the clasp 40 to be pivoted over the nose 23 of the keeper 11 .
The end of the clamp body 10 opposite from the projec-tion 12 may be adapted in any known manner to facilitate assembly with components of the spacer damper. In the preferred embodiment it is formed with a transverse boring 48 for receiving a bolt (not shown), a plurality of recesses 49 being spaced around the boring 48 at opposite sides of the clamp body 10 for engagement 20 with resilient washers (not shown) as described, for example, in United Kingdom Patent Specification No. 1,410,622.
As can be seen from Figure 1, the arms 42 of the clasp 40, which are illustrated in the position which they assume when the keeper 11 is in its clamping position and the intermediate portion 41 of the clasp is engaged in the groove 46, are not vertical but are inclined at an acute angle to the vertical.
More particularly, the groove 46 and the openings 44 are positioned relative to one another so that the clasp arms 42 and the intermediate portion 41 have their axes in a common plane 30 which extends at an acute angle to a plane containing the axis of 108403~
pivotation of the keeper 11, i.e. the axis of the pivot pin 16, and the longitudinal axis of the liner, i.e. the axis of the cable which extends through the liner, the clasp 40 being in-clined in a direction extending from the openings 44 and away from the liner.
This arrangement ensures that the intermediate portion 41 is retained in the groove 46 and that pivotal movement of the clasp 40 in a direction to unlock the keeper 11 requires displacement of the keeper 11 in a direction which further com-presses the liner and therefore increases the bias.
The development described hereinbefore represents a clear advance in the art which will benefit the industry and the public generally.
The present invention relates to cable clamps for spacer dampers.
Spacer dampers for use with bundle conductors comprising a plurality of sub-conductors or cables are provided with a plurality of cable clamps for resiliently securing the sub-conduc-tors or cables to the spacer dampers.
To enable a spacer damper to function successfully in service, it must be provided with cable clamps which provide an adequate and continuous clamping pressure on the sub-conductors, since loss of clamping pressure results in abrasive damage to the sub-conductors and loss of bundle restoration torque. ~tionally, the cable clamps must have the ability to compensate for various natural phenomena such as cold flow (creep) of the aluminium strands which normally form the sub-conductors, and high cycli-cal stresses resulting from differential coefficients of expansion.
The clamping stress on the sub-conductors should be kept to a minimum to avoid damaging the latter, but the gripping or clamping strength should be sufficient to resist bundle rota-tional movement caused by unequal ice loading, electrical short circuit forces, conductor galloping and any other external force imposed on the conductor, and also to resist longitudinal slip caused by unequal ice loading of the sub-conductors.
To facilitate field installation and maintenance of the spacer dampers, it is also desirable to design the cable clamps so that all of the components thereof are captive, which eliminates any necessity for removing any of these components when the clamps are secured to and removed from the sub-conductors.
Conventional cable clamps use a threaded fastener as a means of applying clamping pressure for securing the cable clamps to the sub-conductors. However, the use of a threaded fastener -- 1 -- ;
~ .
1~84~31 for this purpose can result in a wide range of clamping pressure due to variations in the application of torque to the threaded fastener. For example, U.S. Patent 3,161,721 to Torr discloses a device in which the cable is clamped between a pair of pivot-ally connected jaws. The jaws are heldin theirclamping position by a lockingdevice comprising a headedshank extending firstly through a hole or slot in one of the jaws with its head abuttingagainst that jaw,and secondly through a slot in the other jaw. The shank has a transverse cotter which i8 adapted to overlie the otherjaw.
During assembly of the clamp it is necessary to ensure that the orientationof the cotteris suchthat itmay passthrough the slotin the otherjaw. The shank must then be rotated about its longitudinal axis to move the cotter into an overlying position.
Since the shankhas limitedlongitudinal movement it is essential that thehead is heldagainst thejaw duringassembly and whilstthe shank is rotated. This is both inconvenient and time consuming.
It is an object of the present invention to provide a novel and improved cable clamp for use in a spacer damper, which cable clamp at least partially fulfills these requirements.
According to the present invention there is provided a cable clamp for use with a spacer damper assembly, the clamp com-prising a clamp body unting means on the clamp body for connect-ing the cable clamp to a spacer damper assembly; a keeper movable relative to the clamp body into a clamping position and having an elongate nose extending toward the mounting means; pivot means at the opposite end of the body to the mounting means to pivot-ally connect the keeper and the clamp body; wall means on the clamp body and the keeper intermedîate the pivot means and the mounting means defining, in the clamped position, an aperture to receive a cable; keeper retaining means operable to retain the ~ - 2 -- 108403~
body and the keeper in the clamped posit~on, the keeper retain-ing means including a rigid clasp pivotally mounted on the clamp body intermediate the ends thereof between the wall means and the mounting means fior pivotal movement of the rigid clasp in a plane perpendicular to the aperture and swingable in the plane to release the keeper and permit relative movement of the keeper and the body; and a resilient liner within the aperture for gripping engagement around at least a portion of a cable, the liner being compressed by the body and the keeper in the clamped position and biasing the keeper and the clasp into mutual engage-ment; the rigid clasp including a pair of spaced arms intercon-nected by an intermediate portion spaced from the clamp body, the intermediate portion engaging the elongate nose on the keeper to retain the body and the keeper in the clamped position.
Preferably the clasp has a pair of spaced apart arms interconnected by an intermediate portion spaced from the clamp body for engaging a portion of the keeper.
Preferably the pivot means comprises an inturned por-tion at the extremity of each arm of the clasp, each inturned portion being received in an opening in the clamp body.
The keeper portion, which may be formed as a projection in the form of a nose, preferably has a transverse groove for engagement with the intermediate portion of the keeper. The groove and the openings in the clamp body which are engaged by the inturned arm ends of the clasp may be positioned so that the clasp arms detend at an acute angle to a plane containing the axis of pivotationof the keeperrelative to the clamp body and the \l ~ ~ 3 ~
longitudinal axis of the liner, the retainer being inclined in direction extending from the cable receiving opening and away from the liner when the intermediate portion is engaged in the groove.
The invention will be more readily understood from the following description of a preferred embodiment thereof given, by way of example, with reference to the accompanying drawing, in which:
FIGURE 1 shows a view taken in perspective of a cable clamp embodying the present invention, the cable clamp being shown in a partly assembled condition;
FIGURE 2 shows a view in transverse elevation of a part of a liner forming part of the cable clamp of Figure l;
FIGURE 3 shows an end view of the liner part shown in Figure 2;
- 3a .
--- iO84031 The cable clamp illustrated in the accompanying drawing has a clamp body 10 and a keeper 11. At one of its ends, the clamp body 10 is formed with a projection 12, which fits between projections 14 at the corresponding end of the keeper 11, the projections 12 and 14 being rounded to allow pivotation of the keeper 11 relative to the clamp body 10 about a transverse axis.
Borings, of which one is indicated by reference numeral 15, are provided in the projections 14 and are in alignment with a boring (not shown) through the projection 12, these three bor-ings having a common axis coinciding with the above-mentioned axis of pivotation of the keeper 11.
A pivot pin 16 having a splined central portion 17 fits into the above-mentioned borings with its cylindrical end por-tions in the borings 15 of the projections 14 on the keeper 11, and with its central portion engaging the wall of the boring in -the clamp body projection 12 with sufficient friction to retain the pivot pin 16 in position relative to the clamp body 10 and the keeper 11.
The clamp body 10, at the top thereof as viewed in Figure 1, is formed adjacent the projection 12 with an upwardly facing recess 18, and the keeper 11, adjacent the projections 14 thereof, is formed with a corresponding recess 19.
Adjacent the reoess 18, the clamp body 10 is formed with a further recess 20 which extends between opposed, spaced, parallel and upstanding side walls 21.
The end of the keeper 11 opposite from the projections 14 is formed with a projection in the form of a nose 23 which is shaped to be received between the walls 21 on pivotation of the keeper 11 in a clockwise direction, as viewed in Figure 1, to-wards the clamp body 10.
iO84031 The above-described cable clamp is further provided with a resilient liner having two longitudinally separate halves 25 and 26 which, when the clamp is assembled, are received in the recesses 18 and 19, respectively, and which are identical to one another. Preferably, the liner halves 25 and 26 are made of a resilient polyisoprene material or rubber. However, these liner halves 25 and 26 may be made of any other elastomer which is suitable for use in cable clamps.
As can be seen from Figures 2 and 3, taken in conjunc-tion with Figure 1, the liner half 26 has a cylindrical innersurface 28, an outer surface comprising oppositely`divergent frusto-conical coaxial surfaces 29 and 30, flat semi-annular end faces 31 and 32 and flat coplanar side surfaces 33 and 34.-The cylindrical inner surface 28 of the liner half 26is knurled to enable the liner half to securely grip the cable.
The frusto-conical surfaces 29 and 30 merge smoothly mid-way along the length of the liner half 26 and provide a peri-pheral concavity extending around the liner half 26 from the surface 33 to the surface 34. As can be seen in Figure 3, this concavity is interrupted by a round projection 36, which is formed in one piece with the remainder of the liner half 26 and which is also located midway along the length of the liner half 26. The rounded projection 36 is shaped to extend into a corres-ponding boring 37 provided in the recess 19 of the keeper 11, and thus serves to releasably secure the liner half 26 to the keeper 11 .
The recess 19 in the keeper 11 is formed with outwardly divergent frusto-conical surfaces 38 and 39 corresponding in shape and conical ~ngles to the frusto-conical surfaces 29 and 30 of the liner half 26.
iO8~031 As mentioned above, the liner half 25 is identical to the liner half 26, and the recess 18 of the clamp body 10 is formed with outwardly divergent frusto-conical surfaces similarly corresponding to those of the liner half 25, which also has a rounded projection (not shown) corresponding to the projection 36 and mating with a boring (not shown) in the clamp body 10 for releasably securing the liner half 25 to the latter.
For retaining the keeper 11 in a clamping position, in which the keeper nose 23 extends partially into the recess 20, the clamp body 10 is provided with a keeper retainer in the form of a U-shaped clasp indicated generally by reference numeral 40.
The clasp 30 has an intermediate or bridge portion 41 .
extending between opposite parallel arms 42, and the arms 42 have inturned ends, one of which is indicated by reference numeral 43 in Figure 1, which fit into openings, of which one is indicated by reference numeral 44, in opposite sides of the clamp body 10, the inturned ends of the clasp 40 being pivotable in these openings.
The nose 23 of the keeper 11 is formed, at its upper side, with a transverse groove 46 for engagement with the intermediate portion 41 of the clasp 40.
Also, the intermediate portion 41 of the clasp 40 is spaced from the clamp body 10, and more particularly from the bottom of the recess 20, by a distance which is not merely suff-icient to receive the nose portion 23 therebetween but which enables the keeper 11 to be pivoted downwardly into the recess 20 beyond its normal clamping position in order to enable the intermediate portion 41 of the clasp 40 to be pivoted past the outer end of the keeper nose to and from the groove 46.
As will be readily apparent to those skilled in the art, when the above-described cable clamp is in use and a subconductor iO84031 in the form of a cable is clamped between the two halves 25 and 26 of the liner, the keeper 11 being in its above-described clamping position with the intermediate portion 41 of the clasp engaging with the groove 46, the compressed liner halves 25 and 26 resiliently bias the keeper 11 against the clasp 40, thus ensuring that the intermediate portion 41 of the clasp 40 remains engaged in the groove 46.
To enable the keeper 11 to be pivoted against the resilience of the liner and into and beyond its normal clamping 10 position, a manually operable screw clamp of known type may be employed during the fitting of the cable clamp onto its cable to enable the clasp 40 to be pivoted over the nose 23 of the keeper 11 .
The end of the clamp body 10 opposite from the projec-tion 12 may be adapted in any known manner to facilitate assembly with components of the spacer damper. In the preferred embodiment it is formed with a transverse boring 48 for receiving a bolt (not shown), a plurality of recesses 49 being spaced around the boring 48 at opposite sides of the clamp body 10 for engagement 20 with resilient washers (not shown) as described, for example, in United Kingdom Patent Specification No. 1,410,622.
As can be seen from Figure 1, the arms 42 of the clasp 40, which are illustrated in the position which they assume when the keeper 11 is in its clamping position and the intermediate portion 41 of the clasp is engaged in the groove 46, are not vertical but are inclined at an acute angle to the vertical.
More particularly, the groove 46 and the openings 44 are positioned relative to one another so that the clasp arms 42 and the intermediate portion 41 have their axes in a common plane 30 which extends at an acute angle to a plane containing the axis of 108403~
pivotation of the keeper 11, i.e. the axis of the pivot pin 16, and the longitudinal axis of the liner, i.e. the axis of the cable which extends through the liner, the clasp 40 being in-clined in a direction extending from the openings 44 and away from the liner.
This arrangement ensures that the intermediate portion 41 is retained in the groove 46 and that pivotal movement of the clasp 40 in a direction to unlock the keeper 11 requires displacement of the keeper 11 in a direction which further com-presses the liner and therefore increases the bias.
The development described hereinbefore represents a clear advance in the art which will benefit the industry and the public generally.
Claims (8)
1. A cable clamp for use with a spacer damper assembly, the clamp comprising: a clamp body mounting means on said clamp body for connecting said cable clamp to a spacer damper assembly;
a keeper movable relative to the clamp body into a clamping posi-tion and having an elongate nose extending toward said mounting means; pivot means at the opposite end of said body to said mounting means to pivotally connect said keeper and said clamp body; wall means on said clamp body and said keeper intermediate said pivot means and said mounting means defining, in said clamped position, an aperture to receive a cable; keeper retain-ing means operable to retain said body and said keeper in said clamped position, said keeper retaining means including a rigid clasp pivotally mounted on said clamp body intermediate the ends thereof between said wall means and said mounting means for pivotal movement of said rigid clasp in a plane perpendicular to said aperture and swingable in said plane to release said keeper and permit relative movement of said keeper and said body; and a resilient liner within said aperture for gripping engagement around at least a portion of a cable, said liner be-ing compressed by said body and said keeper in said clamped posi-tion and biasing said keeper and said clasp into mutual engage-ment; said rigid clasp including a pair of spaced arms inter-connected by an intermediate portion spaced from the clamp body, said intermediate portion engaging said elongate nose on said keeper to retain said body and said keeper in the clamped position.
a keeper movable relative to the clamp body into a clamping posi-tion and having an elongate nose extending toward said mounting means; pivot means at the opposite end of said body to said mounting means to pivotally connect said keeper and said clamp body; wall means on said clamp body and said keeper intermediate said pivot means and said mounting means defining, in said clamped position, an aperture to receive a cable; keeper retain-ing means operable to retain said body and said keeper in said clamped position, said keeper retaining means including a rigid clasp pivotally mounted on said clamp body intermediate the ends thereof between said wall means and said mounting means for pivotal movement of said rigid clasp in a plane perpendicular to said aperture and swingable in said plane to release said keeper and permit relative movement of said keeper and said body; and a resilient liner within said aperture for gripping engagement around at least a portion of a cable, said liner be-ing compressed by said body and said keeper in said clamped posi-tion and biasing said keeper and said clasp into mutual engage-ment; said rigid clasp including a pair of spaced arms inter-connected by an intermediate portion spaced from the clamp body, said intermediate portion engaging said elongate nose on said keeper to retain said body and said keeper in the clamped position.
2. A cable clamp according to claim 1 in which said keeper is provided with a transverse groove and said inter-mediate portion is engagable with said groove when said body and said keeper are in said clamped position.
3. A cable clamp according to claim 2 in which said rigid clasp is pivotally connected to said body by an in-turned portion at the extremity of each arm of the rigid clasp, each inturned portion being received in an opening in the clamp body.
4. A clamp according to claim 3 in which said openings are closer to said aperture than said groove on said keeper.
5. A clamp according to claim 4 in which said openings are circular and coaxial.
6. A clamp according to claim 1 in which the keeper and the body are provided with a through bore adjacent the wall means and a pin passes through said bore and is retained therein by friction.
7. A clamp according to claim 1 in which the clamp body is formed with a pair of upstanding walls which are spaced apart to at least partially receive the keeper portion therebetween.
8. A cable clamp for use with a spacer damper assembly, the cable clamp comprising: a clamp body; a keeper pivotally interconnected to said clamp body by pivot means; wall means on said keeper and on said clamp body, said wall means defining, when in a clamping position, an aperture to receive a cable;
a resilient liner within said aperture and engaging said wall means; mounting means on said clamp body at the opposite end to said pivot means for connecting said cable clamp to a spacer damper assembly; and a keeper retaining means to retain said keeper and said clamp body in said clamped position, said keeper retaining means including a rigid clasp pivotally mount-ed on said body between said mounting means and said aperture and movable in a plane perpendicular to the aperture from a position in which said keeper and said clamp body are retained in said closed condition to a position in which said keeper and clamp body are freely pivotable with respect to one another.
a resilient liner within said aperture and engaging said wall means; mounting means on said clamp body at the opposite end to said pivot means for connecting said cable clamp to a spacer damper assembly; and a keeper retaining means to retain said keeper and said clamp body in said clamped position, said keeper retaining means including a rigid clasp pivotally mount-ed on said body between said mounting means and said aperture and movable in a plane perpendicular to the aperture from a position in which said keeper and said clamp body are retained in said closed condition to a position in which said keeper and clamp body are freely pivotable with respect to one another.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3740276 | 1976-09-09 | ||
| GB37402/76 | 1976-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1084031A true CA1084031A (en) | 1980-08-19 |
Family
ID=10396206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA285,898A Expired CA1084031A (en) | 1976-09-09 | 1977-08-31 | Cable clamps for spacer dampers |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1084031A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394695A (en) * | 2017-09-04 | 2017-11-24 | 南京汉启能源技术有限公司 | Three core crosslinked cable joints automatic pre-processing device cable quick-speed jigs |
-
1977
- 1977-08-31 CA CA285,898A patent/CA1084031A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394695A (en) * | 2017-09-04 | 2017-11-24 | 南京汉启能源技术有限公司 | Three core crosslinked cable joints automatic pre-processing device cable quick-speed jigs |
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