Patent Publication Number: US-11641084-B2

Title: Portable in-line dieless crimping tool

Description:
CROSS-REFERENCED TO RELATED APPLICATIONS 
     The present disclosure is based on and claims benefit from U.S. Provisional Patent Application Ser. No. 62/719,897 filed on Aug. 20, 2018 entitled “Portable In-Line Dieless Crimping Tool” the contents of which are incorporated herein in their entirety by reference. 
    
    
     BACKGROUND 
     Field 
     The present disclosure relates to cooperating jaws and to hydraulic tools having cooperating jaws. More particularly, the present disclosure relates to hydraulic, hand-held crimping tool with a dieless jaw assembly for crimping a conductor, cable or wire to a termination. 
     Description of the Related Art 
     Hand-held in-line hydraulic tools are known in the art. These tools use cooperating jaws with removable dies that are hydraulically pressed together with great force to crimp a conductor to a termination. These tools may be battery-powered to allow mobility and portability for the user. These tools typically employ a scissor action to cause the cooperating jaws to be pressed together. 
     SUMMARY 
     The present disclosure provides exemplary embodiments of portable, handheld hydraulic tools with a dieless jaw assembly. For example, the portable, handheld hydraulic tool may be an in-line portable, handheld hydraulic crimping tool having an in-line handle assembly and a working head assembly. As another example, the portable, handheld hydraulic tool may be an in-line portable, handheld hydraulic cutting tool having an in-line handle assembly and a working head assembly. The handle assembly has a tool frame portion and a neck portion. The working head assembly has a pair of jaw members joined so that they are pivotable or movable relative to each other and held in place by a locking pin. For a crimping tool, one jaw member has a nest to receive a barrel of a termination and the other jaw member has an indentor used to crimp a conductor to the termination. For a cutting tool, one jaw member has a first cutting blade and the other jaw member has a second cutting blade. 
     In one exemplary embodiment, the present disclosure includes a working head assembly for a hydraulic crimping tool. The working head assembly includes a first jaw member, a second jaw member, a spring and a locking pin. The first jaw member has a proximal end portion and a distal end portion. The distal end portion includes a nest integrally or monolithically formed into the jaw member or secured to the jaw member, and the proximal end portion has one or more bores. The second jaw member has a proximal end portion and a distal end portion. The distal end portion of the second jaw member includes an indentor integrally or monolithically formed into the jaw member or secured to the jaw member, and the proximal end portion has one or more bores which when aligned with the one or more bores of the first jaw member defined a pivot point. The spring has a first end attached to the proximal end portion of the first jaw member and a second end attached to the proximal end portion of the second jaw member. The spring normally biases the proximal end of the first jaw member toward the proximal end of the second jaw member. The locking pin can extend through the one or more bores in the first jaw member and the one or more bores in the second jaw member when the bores are aligned to operatively couple the first jaw member to the second jaw member. 
     In an exemplary embodiment, a crimping tool includes a handle assembly and a working head assembly. The working head assembly includes a first jaw member, a second jaw member, a spring and a locking pin. The first jaw member includes a proximal end portion and a distal end portion. The distal end portion has a nest. The first jaw member has at least one bore. The second jaw member includes a proximal end portion and a distal end portion. The distal end portion includes an indentor. The second jaw member has at least one bore which when aligned with the at least one bore of the first jaw member defines a pivot point. The spring has a first end attached to the proximal end portion of the first jaw member and a second end attached to the proximal end portion of the second jaw member. The spring normally biases the proximal end portion of the first jaw member toward the proximal end of the second jaw member. The locking pin extends through the at least one bore in the first jaw member and the at least one bore in the second jaw member when the bores are aligned to releasably couple the first jaw member to the second jaw member; 
     The various advantages, aspects and features of the various embodiments of the present disclosure and claimed herein should become evident to a person of ordinary skill in the art given the following enabling description and drawings. The aspects and features disclosed herein are believed to be novel and other elements characteristic of the various embodiments of the invention are set forth with particularity in the appended claims. The drawings are for illustration purposes only and are not drawn to scale unless otherwise indicated. The drawings are not intended to limit the scope of the invention despite depicting a presently preferred embodiment of the invention. The following enabling disclosure is directed to one of ordinary skill in the art and presupposes that those aspects of the invention within the ability of the ordinarily skilled artisan are understood and appreciated. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The figures depict embodiments for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures illustrated herein may be employed without departing from the principles described herein, wherein: 
         FIG.  1    is a perspective view of an exemplary embodiment of a tool according to the present disclosure, illustrating a working head assembly having crimping jaws and an in-line type handle assembly; 
         FIG.  2    is an exemplary block diagram for describing various parts of the tool shown in  FIG.  1   ; 
         FIG.  3    is a side elevation view of a first side of the tool of  FIG.  1    with the working head assembly separated from a yoke of the handle assembly; 
         FIG.  4    is a side elevation view of the first side of the tool of  FIG.  1    with the working head assembly moving toward and engaging the yoke of the handle assembly; 
         FIG.  5    is a side elevation view of the first side of the tool of  FIG.  1    with the working head assembly engaging the yoke of the handle assembly, and illustrating a distal end of jaws of the working head assembly being moved toward each other; 
         FIG.  6    is a side elevation view of the first side of the tool of  FIG.  1    with the working head assembly fully engaged with the yoke of the handle assembly; 
         FIG.  7    is an exploded perspective view of the working head assembly of  FIG.  3   ; 
         FIG.  8    is a flat perspective view of the working head assembly of  FIG.  1   , illustrating a nest associated with a first jaw member and an indentor associated with a second jaw member of the working head assembly; 
         FIG.  9    is a side elevation view of the working head assembly of  FIG.  8   ; 
         FIG.  10    is side elevation view in partial cut-away of the first side of the working head assembly of the tool of  FIG.  1    in an open position and releasably secured to a yoke of the handle assembly; 
         FIG.  11    is an enlarged view of a portion of the working head assembly and yoke of the handle assembly of  FIG.  10    taken from detail  11 . 
         FIG.  12    is a side elevation view of the nest of the first jaw member illustrating a geometry of the nest; 
         FIG.  13    is a side elevation view of the nest of the first jaw member similar to  FIG.  12    and illustrating that an angle of receipt of a barrel of a termination is the same for different size terminations; 
         FIG.  14    is a side elevation view of the working head assembly of  FIG.  1   , illustrating a barrel of a large size termination resting in the nest of the first jaw member and the indentor of the second jaw member in contact with the termination, and illustrating a broad impact zone for the indentor to impact the barrel and a preferred impact zone; 
         FIG.  15    is a side elevation view of the working head assembly of  FIG.  1   , illustrating a barrel of a small size termination resting in the nest of the first jaw member and the indentor of the second jaw member in contact with the termination, and illustrating the broad impact zone for the indentor to impact the barrel and the preferred impact zone; 
         FIGS.  16 - 18    are side elevation views of the nest of  FIG.  12    demonstrating that an angle of receipt of the barrel of the termination is the same for different size terminations and different closure angles; 
         FIG.  19    is a side elevation view of the indentor of the second jaw member of the working head assembly according to the present disclosure; 
         FIG.  19 A  is a side elevation view of the indentor of the second jaw member fully seated in the nest of the first jaw member; 
         FIG.  20    is a schematic side elevation view illustrating points of contact between the indentor of  FIG.  19 A  and terminations of various sizes placed within the nest; 
         FIG.  21    is a side elevation view of the working head assembly of  FIG.  1    and rollers of the handle assembly in contact with cam surfaces of each jaw member when the jaws are in a home position; 
         FIG.  22 A  is a side elevation view of the working head assembly of  FIG.  21   , illustrating the rollers of the handle assembly in contact with the cam surfaces of each jaw member at a point along a convex surface segment of the cam surfaces; 
         FIG.  22 B  is an enlarged side elevation view of the cam surfaces of each jaw member of the working head assembly of  FIG.  22 A  taken from detail  22 B, illustrating the rollers of the handle assembly in contact with cam surfaces of each jaw member at a point along the convex surface segment of the cam surfaces; 
         FIG.  23 A  is a side elevation view of the working head assembly of  FIG.  21   , illustrating the rollers of the handle assembly in contact with the cam surfaces of each jaw member at a point further along a convex surface segment of the cam surfaces; 
         FIG.  23 B  is an enlarged side elevation view of the cam surfaces of each jaw member of the working head assembly of  FIG.  23 A  taken from detail  23 B, illustrating the rollers of the handle assembly in contact with cam surfaces of each jaw member at a point further along the convex surface segment of the cam surfaces; 
         FIG.  24    is a side elevation view of the working head assembly of  FIG.  21   , illustrating the rollers of the handle assembly in contact with cam surfaces of each jaw when the jaws are in a crimping position; 
         FIGS.  25 - 28    are side elevation views representing a crimping operation of the jaws of the working head assembly of the present disclosure while crimping a large size termination; 
         FIG.  29    is an end elevation view of the large termination of  FIGS.  25 - 28    after the crimping operation is complete; 
         FIGS.  30 - 33    are side elevation views representing a crimping operation of the jaws of the working head assembly of the present disclosure while crimping a small size termination; 
         FIG.  34    is an end elevation view of the small termination of  FIGS.  30 - 33    after the crimping operation is complete; 
         FIG.  35    is a side elevation view of another exemplary embodiment of a working head assembly according to the present disclosure with the jaw members in the home position, and illustrating a nest in a pivot arm of the first jaw member, an indentor on the second jaw member and a cantilevered spring with one end attached to the pivot arm and extending toward the second jaw member so that the free end of the spring rests on a guiding feature on the second jaw member, such as a pin or integral surface; 
         FIG.  36    is a side elevation view of the working head assembly of  FIG.  35    in a fully seated position, and illustrating the cantilevered spring maintaining alignment between the nest and the indentor; 
         FIG.  37    is a side elevation view of the working head assembly of  FIG.  35    with a barrel of a large size termination resting in the nest and in contact with the indentor, and illustrating the cantilevered spring maintaining alignment between the nest, the impact zone of the barrel of the large connector and the indentor; 
         FIG.  38    is a side elevation view of the working head assembly of  FIG.  35    with a barrel of a small size termination resting in the nest and in contact with the indentor, and illustrating the cantilevered spring maintaining alignment between the nest, the impact zone of the barrel of the small connector and the indentor; 
         FIG.  39    is a side elevation view of another exemplary embodiment of a working head assembly according to the present disclosure with the jaw members in the home position, and illustrating the nest in a first pivot arm of the first jaw member, an indentor on a second pivot arm of the second jaw member, and a guide assembly between the first pivot arm and the second pivot arm that maintains alignment between the nest and the indentor; 
         FIGS.  40 - 42    are side elevation views representing a crimping operation of the jaw members of the working head assembly of  FIG.  39   , illustrating the guide assembly between the first pivot arm and the second pivot arm maintaining alignment between the nest and the indentor as the jaw members move from the home position through the crimping position to the fully seated position; 
         FIG.  43    is a perspective view of another exemplary embodiment of a tool according to the present disclosure, illustrating a working head assembly having crimping jaws in an open position and an in-line type handle assembly; 
         FIG.  44    is a side elevation view of the crimping jaws of  FIG.  43    in a crimping position with a termination positioned within a nest of a crimping jaw, illustrating an exemplary embodiment of a hinge region that permits the crimping jaws to absorb a failure of the nest when the crimping jaws are in the crimping position; 
         FIG.  45    is a side elevation view of the crimping jaws of  FIG.  44    illustrating a failure of the nest and the hinge region absorbing the failure; 
         FIG.  46    is a side elevation view of the crimping jaws of  FIG.  43    in a crimping position with a termination positioned within a nest of a crimping jaw, illustrating another exemplary embodiment of a hinge region that permits the crimping jaws to absorb a failure of the nest when the crimping jaws are in the crimping position; 
         FIG.  47    is a side elevation view of the crimping jaws of  FIG.  46    illustrating a failure of the nest and the hinge region absorbing the failure; 
         FIGS.  48 - 51    are side elevation views representing a crimping operation of the jaws of the working head assembly of  FIG.  43    while crimping a large size termination; and 
         FIG.  52    is an end elevation view of the large termination of  FIGS.  48 - 51    after the crimping operation is complete. 
     
    
    
     DETAILED DESCRIPTION 
     The present disclosure provides embodiments of portable, battery-powered, in-line, hand-held hydraulic tools where crimping jaws of the tools can be interchanged with cutting jaws. The present disclosure will be shown and described in connection with portable, battery-powered, in-line, hand-held hydraulic crimping tools. For ease of description, the portable, battery-powered, in-line, hydraulic crimping tools according to the present disclosure may also be referred to as the “tools” in the plural and the “tool” in the singular. The conductors, cables, wires or other objects to be crimped to a termination by the tool of the present disclosure may also be referred to collectively as the “conductors” in the plural and the “conductor” in the singular. The terminations include all types of crimp terminations, such as lugs, contacts, splices, butt splices, male quick disconnect terminals, and female quick disconnect terminals, etc. In addition, as used in the present disclosure, the terms “front,” “rear,” “upper,” “lower,” “upwardly,” “downwardly,” and other orientation descriptors are intended to facilitate the description of the exemplary embodiments disclosed herein and are not intended to limit the structure of the exemplary embodiments or limit the claims to any particular position or orientation. 
     Referring to  FIGS.  1  and  2   , a battery-powered, handheld hydraulic tool  10  includes a handle assembly  20  that houses the hydraulic and electrical controls for the tool, seen in  FIG.  2   , and a working head assembly  60  that is operatively connected to the handle assembly  20 . The handle assembly  20  includes a tool frame  22 , a pump  28 , a motor  30 , a fluid reservoir  32 , a controller  34 , a hydraulic drive conduit system  36  and a battery  40 . The tool frame  22  includes a hand grip portion  24  and a neck portion  26  in an in-line type shape that utilizes a scissor-type crimping operation. However, the tool frame  22  could be in any suitable type of shape, such as, for example, a pistol like shape or a suitcase type shape that utilizes a scissor-type crimping operation. 
     The pump  28 , motor  30 , fluid reservoir  32 , controller  34  and hydraulic drive conduit system  36  are located within the grip portion  24  of the tool frame  22  and are shown schematically in  FIG.  2   . The tool  10  may also include a camera  42 , shown schematically in  FIG.  2   , mounted to the tool frame  22  and oriented to provide a video of a working area of the working head assembly  60 . The tool  10  may also include a tool tracking system  44 , shown schematically in  FIG.  2   , for tracking the location of the tool. In an exemplary embodiment, the tool tracking system  44  may include known GPS tracking components that receive GPS satellite signals and transmit the location of the tool to a remote station or mobile device allowing a user to track the location of the tool. Such transmissions to remote stations may be achieved using known communication systems, such as for example, cellphone networks. 
     In this exemplary embodiment, the battery  40  is removably connected to one end of the grip portion  24  of the tool frame  22 . However, in another embodiment, the battery  40  could be removably mounted or connected to any suitable position on the tool frame  22 . In another embodiment, the battery  40  may be affixed to the tool  10  so that it is not removable. The battery  40  shown is a rechargeable battery, such as a lithium ion battery, that can output a voltage of at least 16 VDC, and preferably in the range of between about 16 VDC and about 24 VDC. In the exemplary embodiment shown in  FIG.  1   , the battery  40  can output a voltage of about 18 VDC. 
     Continuing to refer to  FIGS.  1  and  2   , the motor  30  is coupled to the battery  40  and the controller  34 , and its operation is controlled by the controller  34 . Generally, the motor  30  is adapted to operate at a nominal voltage corresponding to the voltage of the battery  40 , e.g., between about 16 VDC and about 24 VDC. For example, if the battery  40  is adapted to output a voltage of about 18 VDC, then the motor  30  would be adapted to operate at a voltage of about 18 VDC. Under a no-load condition, such a motor  30  can operate at about 21,000 rpm with a current of about 2.7 amps. At maximum efficiency, the motor  30  can operate at about 15,000 rpm with a current of about 12 amps, a torque of about 75 mN-m, and an output of about 165 W. An example of such an 18 VDC motor  30  is the RS-550VC-7030 motor, manufactured by Mabuchi Motor Co., Ltd. of Chiba-ken, Japan. However, as noted above, any suitable type of motor adapted to operate at or above a 16 VDC nominal voltage could be used. As another example, the motor may be a motor adapted to operate at a 24 VDC nominal voltage. The output shaft of the motor  30  is connected to the pump  28  by a gear reduction assembly or gearbox  46 , shown schematically in  FIG.  2   . Any suitable type of gear reduction assembly  46  could be used. 
     The grip portion  24  of the tool frame  22  includes one or more operator controls, such as switches  48  and  50 , which can be manually activated by an operator. The grip portion  24  of the tool frame  22  may include a hand guard or hilt  52  that can protect an operator&#39;s hand while operating the tool  10 . The hilt  52  may include a light  54 , e.g., an LED, that is operatively connected to the controller  34  such that when a switch  48  or  50  is actuated the light activates to illuminate the working area of the working head assembly  60 . According to an embodiment of the present disclosure, one of the switches (e.g., switch  48 ) may be used to activate a piston (not shown) associated with the hydraulic drive system to activate the working head assembly  60  such that the work head assembly moves from a home position (or open position), seen in  FIG.  8   , toward a crimping position, seen in  FIG.  28   . The other switch (e.g., switch  50 ) may be used to retract the piston so that the working head assembly  60  moves from the crimping position to the home position. The operator controls, e.g., switches  48  and  50 , are operably coupled to the controller  34 . 
     The tool  10  may include a poppet valve  56 , shown schematically in  FIG.  2   , connected to the hydraulic drive conduit system  36 . The poppet valve  56  is adapted to open when the conduit system  36  reaches a predetermined minimum hydraulic pressure threshold, such as about 6,500 psi. When the poppet valve opens, hydraulic fluid being pumped by the pump  28  can exit the conduit system  36  and return to the fluid reservoir  32 . The poppet valve  56  can be adapted to generate an audible sound when it opens. This audible sound can signal to the operator that the tool  10  has reached its maximum predetermined hydraulic pressure and, thus, the action of the working head assembly  60 , e.g., a crimping operation or crimping action, is completed. 
     In the exemplary embodiment shown in  FIG.  2   , the controller  36  is adapted to sense a current drop of electricity to the motor  30 . When the poppet valve  56  opens, resistance to rotation of the motor  30  is reduced such that the motor draws less current. The controller  36  senses this current drop via a current sensor (not shown), and automatically deactivates the motor  30  for a predetermined period of time. In one embodiment, the predetermined period of time is between about 2 seconds and about 3 seconds. However, any suitable predetermined period of time could be set. In another embodiment, the controller  34  could be adapted to deactivate the motor  30  until a reset button or reset like procedure is performed by the operator. With this type of system, an operator can sense via tactile feedback that the motor  30  and pump  28  have stopped and would not need to rely on an audible signal being heard or a visual signal from an LED positioned on the tool  10 . 
     In an exemplary embodiment, the working head assembly  60  includes a pair of cooperating jaw members; a first jaw member  70  and second jaw member  150 . As shown in  FIGS.  3 - 7   , the first jaw member  70  includes a body  72  having a distal end portion  74  and a proximal end portion  76 . In the crimping tool embodiments, the distal end portion  74  includes a nest  78  used during a crimping operation. The nest  78  may be integrally or monolithically formed into the distal end portion  74  so that it is in a fixed position, or the nest  78  may be a separate member that is permanently or releasably secured to the distal end portion  74  using, for example, welds, mechanical fasteners or spring locking fasteners. In the event the nest  78  is a separate member, the nest may be in a fixed position or movable relative to the body  72 . Similarly, the second jaw member  150  includes a body  152  having a distal end portion  154  and a proximal end portion  156 . The distal end portion  154  includes an indentor  158  used during a crimping operation. The indentor  158  may be integrally or monolithically formed into the distal end portion  154  so that it is in a fixed position, or the indentor  158  may be a separate member that is permanently or releasably secured to the distal end portion  154  using, for example, welds, mechanical fasteners or spring locking fasteners. In the event the indentor  158  is a separate member, the indentor may be in a fixed position or movable relative to the body  152 . In this exemplary embodiment, the indentor  158  includes an arcuate shaped impacting surface  158   a , seen in  FIG.  7   , that is sufficiently rigid to impact a barrel portion of a termination positioned within the nest and deform the barrel portion of the termination. 
     It is noted that in the cutting tool embodiments, the distal end portion  74  of the body  72  includes a cutting blade instead of a nest, and the distal end portion  154  of the body  152  includes a cutting blade instead of an indentor. An example of jaws for an in-line tool with cutting blades is described in commonly owned U.S. application Ser. No. 16/378,992 filed on Apr. 9, 2019, which is incorporated herein in its entirety by reference. 
     Referring to  FIG.  7   , the jaw members  70  and  150  can be connected to one another using a number of known mechanical configurations. As non-limiting examples, jaw members  70  and  150  can be connected to one another using a tongue in groove type configuration or a clevis, tang and pin type configuration. In the exemplary embodiment shown, the jaw members  70  and  150  are connected to one another using the clevis, tang and pin type configuration. More specifically, the second jaw member  150  includes a clevis  80  having bores  82  and  84  through the sides of the clevis  80 , and the first jaw member  70  includes a tang  160  having a bore  162 , as shown. In this configuration, to connect the jaw members  70  and  150  together, the tang  160  is positioned within the clevis  80 . A sleeve or bushing  164  having a central opening  166  is disposed within the bores  82 ,  84  and  162 , seen in  FIG.  7   . The sleeve  164  holds the two jaw members  70  and  150  together until a locking pin  180 , seen in  FIGS.  3  and  4   , connects the jaw members  70  and  150  to the neck portion  26  of the handle assembly  20  of the tool  10 . The sleeve  164  allows the locking pin  180  to slide through one continuous surface when connecting the jaw members  70  and  150  to the neck portion  26 , which permits easier attachment of the jaw members  70  and  150  to the handle assembly  20 . In other words, the sleeve  164  allows the locking pin  180  to glide through areas or seems where the jaw members  70  and  150  meet without catching on a jaw member in the event the jaw members are slightly offset, misaligned or have gaps. Additionally, the sleeve  164  keeps the jaw members  70  and  150  of the working head assembly  60  together for easier handling when the locking pin  180  is removed from the tool  10 . 
     The jaw members  70  and  150  are configured to open and close relative to one another using, for example, the clevis, tang and locking pin type configuration. The jaw members  70  and  150  can open and close relative to one another between the home position and a fully seated position. The home position is a position where the jaw members are separated sufficiently to allow termination barrels to be inserted into the nest  78  of the first jaw member  70 , as seen in  FIG.  8   . The fully seated position is a position of the jaw members when the indentor  158  of the second jaw member  150  is fully seated in the nest  78  of the first jaw member  70 , as seen in  FIG.  19 A . As jaw members  70  and  150  move from the open position to the fully seated position, the jaw members can perform a crimping operation where the indentor  158  of the second jaw member  150  is in contact with a barrel of a termination and deforming the barrel of the termination with a force sufficient to crimp a conductor inserted into the barrel of the termination to the termination. Thus, when operating the tool  10 , the indentor  158  does not have to travel to the fully seated position in order to crimp a conductor to a termination because of a number of factors, including the size of the termination and the size of the conductor. Thus, using the clevis and tang arrangement, for example, allows the jaw members  70  and  150  to pivot around sleeve  164  and the locking pin  180  such that the jaw members can move between the home position and the fully seated position. When moving the jaw members  70  and  150  to the home position, seen in  FIG.  8   , the jaw members pivot causing the nest  78  and indentor  158  to move away from each other to permit a barrel of a termination to be inserted between the nest  78  and indentor  158 . When moving the jaw members  70  and  150  to the fully seated position, the jaw members pivot causing the nest  78  and indentor  158  to advance towards each other until the indentor  158  is fully seated in the nest  78 , seen in  FIG.  19 A . 
     Using the clevis, tang and pin type configuration described herein (or the tongue-and-groove type configuration) allows the working head assembly  60  to maintain the forces acting on the jaw members  70  and  150  symmetrically as well as reduces the stress on the jaw members, so as to allow a smaller, lighter weight design of the working head assembly. Specifically, with the clevis, tang and pin type configuration (or the tongue-and-groove type configuration), all of the forces are symmetrically applied to the jaw members. In addition, this configuration allows for tighter tolerances to further enhance performance of the operating jaw members. 
     Referring again to  FIGS.  3 - 7   , the jaw members  70  and  150  are configured for easy connection to and removal from the handle assembly  20  of the tool  10 . As shown, the proximal end portion  76  of the first jaw member  70  includes a raised tab  86  on one or both sides of the jaw member, and the proximal end portion  156  of the second jaw member  150  includes a raised tab  168  on one or both sides of the jaw member. The raised tabs  86  and  168  serve as stops. More specifically, the raised tabs  86  and  168  are preferably positioned to facilitate connecting the jaw members  70  and  150  of the working head assembly  60  to the handle assembly  20  by allowing the jaw members to only open an amount that results in the locking pin  180  being aligned with the central opening  166  of the sleeve  164 , thus freeing the hands of a user when connecting the working head assembly  60  to the handle assembly  20  or when removing the working head assembly from the handle assembly. A user can now allow the pin  180  to be removed and, subsequently, the jaw members  70  and  150  to release and fall open, leaving the jaw members aligned. A more detailed description of connecting the jaw members  70  and  150  to the handle assembly  20  and removing the jaw members and from the handle assembly is described in commonly owned patent application Ser. No. 15/979,709 filed on May 15, 2018 which is incorporated herein in its entirety by reference. 
     In addition, in the exemplary embodiment shown, each raised tab  86  and  168  is sized and configured to mate with a respective tab notch  90   a  and  90   b , seen in  FIGS.  6 ,  10  and  11   , provided in an inner surface of a yoke  90  of the neck portion of the handle assembly  20 , as is known, when attaching the jaw members  70  and  150  to the yoke  90 . More specifically, when the raised tabs  86  and  168  are positioned in their respective tab notches  90   a  and  90   b  the bores in the jaw members  70  and  150  are aligned so that the sleeve  164  and locking pin  180  can connect the jaw members  70  and  150  to the yoke  90 . This alignment allows one roller  92 , seen in  FIG.  21   , positioned within the yoke  90  to maintain a slight distance from cam surface  88   a  on the first jaw member  70 , and allows another roller  94 , seen in  FIG.  21   , positioned within the yoke  90  to maintain a slight distance from with cam surface  170   a  on the second jaw member  150 . 
     As noted above, the working head assembly  60  is releasably secured to the neck portion  26  of the handle assembly  20  via the locking pin  180 , which is described in more detail in commonly owned patent application Ser. No. 15/979,709. When the raised tabs  86  and  168  are positioned into their respective tab notches  90   a  and  90   b , the jaw members  70  and  150  are prevented from falling out of the yoke  90  of the neck portion  26  of the handle assembly  20  when the locking pin  180  is in an extended position. Additionally, when the locking pin  180  is in the extended position such that the locking pin  180  is removed from the bore  82  and  84  in jaw member  70  and the bore  162  in the jaw member  150 , the jaw members not only remain connected to the yoke  90 , but also tension from spring member  182 , seen in  FIG.  21   , coupled between the distal end portions  76  and  156  of the jaw members  70  and  150 , respectively, causes the raised tabs  86  and  168  to be held within the tab notches  90   a  and  90   b  in the yoke  90 . One end of the spring member  182  is connected to the distal end portion  76  of the first jaw member  70  and the opposite end of the spring member  182  is connected to the distal end portion  156  of the second jaw member  150  by a connection accessed through spring pin holes (not shown) in the respective jaw member. As will be appreciated, the spring member  182  normally bias the jaw members  70  and  150  toward the open position. This allows the jaw  60  to remain attached to the yoke  90 . 
     Referring now to  FIGS.  12 - 18   , the nest  78  of the jaw member  70  will be described in more detail. The nest  78  has an asymmetric shape that compensates for distortion in the crimp as the jaw members move angularly or along an arc pattern from the home position toward the fully seated position. This angular motion or arc pattern forms the scissor action of the tool  10  and is based off the pivot point of the jaw members  70  and  150  about the locking pin  180 . The asymmetric shape of the nest  78  is defined by three surfaces  78   a ,  78   b  and  78   c , seen in  FIG.  12   . More specifically, the first surface  78   a  is a concave surface relative to a center of the nest, as shown by arc S 1 . The second surface  78   b  is a convex surface relative to a center of the nest, as shown by arc S 2 . The third surface  78   c  is a concave surface relative to a center of the nest, as shown by arc S 3 . The third surface  78   c  joins the first surface  78   a  to the second surface  78   b  and has a radius of curvature that is less than the radius of curvature of the first surface  78   a . The surfaces  78   a ,  78   b  and  78   c  are oriented such that an angle “θ,” seen in  FIG.  13   , extending between termination contact segments on the first surface  78   a  and corresponding termination contact segments on the second surface  78   b  remains constant. A termination contact segment on the first surface  78   a  and a corresponding termination contact segment on the second surface  78   b  are segments on the surfaces  78   a  and  78   b  where a termination barrel placed in the nest contacts the first and second surfaces  78   a  and  78   b , as shown in  FIG.  13   . These corresponding termination contact segments may also be referred to herein as a “contact segment pair.” By maintaining the angle “θ” constant for each contact segment pair along the first and second surfaces  78   a  and  78   b , the impact of the indentor  158  against a barrel of a termination placed in the nest  78  occurs within a predefined impact zone “I Z1 ” which is about 60 degrees relative to a center of a termination barrel placed in the nest  78 . Preferably, the predefined impact zone is an impact zone “I Z2 ” which in this exemplary embodiment is about 30 degrees, as seen in  FIGS.  14  and  15   . 
     To illustrate and referring to  FIGS.  14 - 16   , if a termination  200  having a large diameter barrel is placed in the nest  78 , the angle of closure “a” between the first jaw member  70  and the second jaw member  150  relative to the pivot point of the jaw members  70  and  150  results in an angle “θ” between termination contact segment CS 1  on the first surface  78   a  and termination contact segment CS 2  on the second surface  78   b , as seen in  FIG.  16   . Similarly, if a termination  202  having a medium diameter barrel is placed in the nest  78 , the angle of closure “β” between the first jaw member  70  and the second jaw member  150  relative to the pivot point of the jaw members  70  and  150  results in an angle “θ” between termination contact segment CS 3  on the first surface  78   a  and termination contact segment CS 4  on the second surface  78   b , as seen in  FIG.  17   . Similarly, if a termination  204  having a small diameter barrel is placed in the nest  78 , the angle of closure “γ” between the first jaw member  70  and the second jaw member  150  relative to the pivot point of the jaw members  70  and  150  results in an angle “θ” between termination contact segment CS 5  on the first surface  78   a  and termination contact segment CS 6  on the second surface  78   b , as seen in  FIG.  18   . 
     Referring now to  FIGS.  19 ,  19 A and  20   , the indentor  158  of the jaw member  150  will be described in more detail. As shown, the indentor  158  has a rounded surface  158   a , seen in  FIG.  19   , and is configured so that when the jaw  60  is fully closed, the indentor  158  fits within the nest  78  so that it contacts the first surface  78   a  and the second surface  78   b  at a point adjacent the opening of the nest  78 , as shown in  FIG.  19 A . The indentor  158  has an impact segment “I S ” which is the portion of the indentor that strikes or impacts a barrel of a termination placed within the nest  78 . As seen in  FIG.  20   , the impact segment “I S ” remains substantially constant as the jaw members  70  and  150  move angularly or along their arc pattern from the home position to the crimp position. To illustrate, a termination  200  having a large diameter (shown as a dash line in  FIG.  20   ) is impacted in the impact zone “I Z1 ” by the impact segment “I S ” of the indentor  158  (shown as a dash line in  FIG.  20   ). Similarly, a termination  202  having a medium diameter (shown as a dash-dot-dot-dash line in  FIG.  20   ) is impacted in the impact zone “I Z1 ” by the impact segment “I S ” of the indentor  158  (shown as a dash-dot-dot-dash line in  FIG.  20   ). Similarly, a termination  204  having a large diameter (shown as a thick dash-dot-dot-dash line in  FIG.  20   ) is impacted in the impact zone “I Z1 ” by the impact segment “I S ” of the indentor  158  (shown in a thick dash-dot-dot-dash line in  FIG.  20   ). It is noted that in the exemplary embodiment of  FIG.  20   , the impact segment “I S ” of the indentor  158  is also impacting the termination  200 ,  202  or  204  in the preferred impact zone “I Z2 .” 
     Since the jaw members  70  and  150  of the present disclosure move angularly relative to each other when moving from the home position to the crimp position, the geometry of the nest  78  and the indentor  158  according to the present disclosure is configured so that nest-indentor relationship is substantially similar to a nest-indentor relationship of known linear nest-indentor configurations, where the nest is fixed and the indentor moves linearly relative to the fixed nest and impacts a barrel of a termination at a center of the barrel. In other words, the geometry of the nest  78  and the indentor  158  according to the present disclosure is such that the indentor  158  impacts the barrel of a termination (e.g., termination  200 ,  202  or  204 ) placed in the nest  78  at substantially the center of the barrel of the termination. 
     Turning now to  FIGS.  21 - 24   , in addition to the nest  78  and indentor  158  geometry of the jaw members  70  and  150 , the present disclosure also contemplates a new geometry for the cam surface  88  of the first jaw member  70  and the cam surface  170  of the second jaw member  150 . The geometry of the cam surfaces  88  and  170  is based upon a desired average crimping force of the jaw members  70  and  150 . The geometry of the cam surfaces  88  and  170  is configured to provide a sufficient crimping force between the nest  78  and the indentor  158  so that a wide variety of sizes of terminations can be placed in the nest  78  and crimped by the indentor  158 . Thus, the cam surfaces  88  and  170  can be used to establish the depth of crimp of the barrel of the termination after a crimping operation. 
     In an exemplary embodiment, the cam surface  88  has a first concave surface segment  88   a , a second concave surface segment  88   b  and a convex surface segment  88   c  between the first and second concave surface segments. Similarly, the cam surface  170  has a first concave surface segment  170   a , a second concave surface segment  170   b  and a convex surface segment  170   c  between the first and second concave surface segments. When the jaw members  70  and  150  are in the home position, the first concave surface segment  88   a  is the at-rest position of roller  92  and the first concave surface segment  170   a  is the at rest position of roller  94 , as seen in  FIG.  21   . When the jaw members  70  and  105  are in the crimp position, the second concave surface segment  88   b  is at the crimp position of roller  92  and the second concave surface segment  170   b  is at the crimp position of roller  94 , as seen in  FIG.  24   . The convex surface segment  88   c  is configured so that the crimping force of the jaw members  70  and  150  can change depending upon where along the convex surfaces  88   c  and  170   c  the respective rollers  92  and  94  are. For example and referring to  FIGS.  22 A and  22 B , when the roller  92  moves upwardly from the at-rest position in concave surface segment  88   a  to the convex surface segment  88   c  and the roller  94  moves upwardly from the at-rest position in concave surface segment  170   a  to the convex surface segment  170   c , the incline of the concave surface segments  88   c  and  170   c  increases the force the jaw members  70  and  150  generate. Thus, if the barrel of a termination placed in the nest  78  is a large size barrel, the indentor  158  can generate sufficient force to crimp the large size barrel. If the barrel of a termination placed in the nest  78  is a medium size barrel, rollers  92  and  94  move along the convex surface segments  88   c  and  170   c  to a point where indentor  158  can generate sufficient force to crimp the medium size barrel, seen in  FIGS.  23 A and  23 B . If the barrel of a termination placed in the nest  78  is a small size barrel, rollers  92  and  94  move along the convex surface segments  88   c  and  170   c  to a point where indentor  158  can generate sufficient force to crimp the small size barrel. 
     The operation of the nest  78  and indentor  158  for crimping a termination  200  with a large barrel will be described with reference to  FIGS.  25 - 29   . Initially, with the jaw members  70  and  150  in the home position, a barrel of termination  200  is inserted between the jaw members and a conductor (not shown) is inserted into the barrel. The tool  10  is activated using for example the switches  48  or  50 , until the rollers  92  and  94  move from their respective at-rest concave surface segments  88   a  and  170   a  to their respective convex surface segments  88   c  and  170   c  along cam surfaces  88  and  170  so that the impacting segment “I S ” of the indentor  158  contacts the barrel of the termination  200 , as seen in  FIG.  25   . It is noted that in this scenario the closure angle between the first and second jaw members is “a,” seen in  FIG.  16   . The closure angle is the angle between the first jaw member  70  and second jaw member  150  when the indentor  158  first contacts a barrel of a termination relative to the angle of the first jaw member  70  and second jaw member  150  at the point when the indentor  158  is fully seated in the nest  78 , seen in  FIG.  19 A . It is noted that the indentor  158  does not have to travel through the full closure angle in order to crimp a conductor to a termination. Further activation of the tool  10  causes the rollers  92  and  94  to move further along the convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170  applying sufficient force on the barrel of the termination  200  to begin deforming the barrel and thus begin crimping the conductor (not shown) to the termination  200 , as seen in  FIG.  26   . Further activation of the tool  10  causes the rollers  92  and  94  to move further along the convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170  applying sufficient force on the barrel of the termination  200  to further deform the barrel and crimp the conductor (not shown) to the termination  200 , as seen in  FIG.  27   . Further activation of the tool  10  causes the rollers  92  and  94  to move further along the convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170  to complete the crimp operation such that the conductor (not shown) is crimped to the termination  200 , as seen in  FIG.  28   . An example of the final deformation of the barrel of the termination after a crimping operation is shown in  FIG.  29   . 
     The operation of the nest  78  and indentor  108  for crimping a termination  204  with a small barrel will be described with reference to  FIGS.  30 - 34   . Initially, with the jaw members  70  and  150  in the home position, a barrel of termination  204  is inserted between the jaw members and a conductor (not shown) is inserted into the barrel. The tool  10  is activated using for example the switches  48  or  50 , so that the rollers  92  and  94  move from their respective at rest concave surface segments  88   a  and  170   a  along to their respective convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170  until the impacting segment “I S ” of the indentor  158  contacts the barrel of the termination  204 , as seen in  FIG.  30   . It is noted that the closure angle “γ” (seen in  FIG.  18   ) is less than the closure angle “a” (seen in  FIG.  16   ) due to the small diameter barrel of the termination  204 . Further activation of the tool  10  causes the rollers  92  and  94  to move further along the convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170 , applying sufficient force on the barrel of the termination  204  to begin deforming the barrel and thus begin crimping the conductor (not shown) to the termination  204 , as seen in  FIG.  31   . Further activation of the tool  10  causes the rollers  92  and  94  to move further along the convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170 , applying sufficient force on the barrel of the termination  204  to further deform the barrel and crimp the conductor (not shown) to the termination  204 , as seen in  FIG.  32   . Further activation of the tool  10  causes the rollers  92  and  94  to move further along the convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170  to complete the crimp operation such that the conductor (not shown) is crimped to the termination  204 , as seen in  FIG.  33   . An example of the final deformation of the small barrel of termination  204  after the crimping operation is shown in  FIG.  34   . It is noted that comparing the barrel of termination  200  in  FIG.  29    with the barrel of termination  204  in  FIG.  34    reveals that the final crimps have substantially the same shape such that the working head assembly  60  of the tool  10  provides substantially the same crimp over a wide range of termination barrel diameters. 
     It is noted that in instances where the termination is small such that the indentor  158  moves to the fully seated position during a crimping operation, the further activation of the tool  10  described above would cause the rollers  92  and  94  to move from the convex surface segments  88   c  and  170   c  of the cam surfaces  88  and  170  to the concave surface segments  88   b  and  170   b  to complete the crimp operation. 
     Referring now to  FIGS.  35 - 38   , another exemplary embodiment of a nest and indentor configuration is shown. In this exemplary embodiment, the nest  172  is pivotably attached to the jaw member  70 . The nest  172  has substantially the same shape as a nest of a linear action tool, such as the nest described in commonly owned patent application Ser. No. 15/429,869 filed on Feb. 10, 2017 which is incorporated herein in its entirety by reference. The indentor  158  is substantially similar to the indentor described above and for ease of description is not repeated. In this exemplary embodiment, one or both jaw members  70  and  150  include a pin  174  and a cantilevered spring  176 . In the embodiment shown, the pin  174  is secured to or formed into the distal end portion  154  of the jaw member  150 . The cantilevered spring  176  is secured to or formed into the nest  172  and extends toward the second jaw member  150  so that a free end of the spring  176  rests on the pin  174  as shown. In this exemplary embodiment, as the jaw members  70  and  150  move along their arc pattern from the home position to the crimp position, the pin  174  and cantilevered spring  176  pivot the nest  172  so that it remains aligned with the indentor  158  to ensure a consistent crimp. 
     Referring now to  FIGS.  39 - 42   , another exemplary embodiment of a nest and indentor configuration is shown. In this exemplary embodiment, the nest  184  is pivotably attached to the jaw member  70  and the indentor  186  is pivotably attached to the jaw member  150 . The nest  184  has substantially the same shape as a nest of a linear action tool, such as the nest described in commonly owned Patent Application No. Feb. 10, 2017. The indentor  186  has substantially the same shape as an indentor of a linear action tool, such as the indentor described in commonly owned Patent Application No. Feb. 10, 2017. In this exemplary embodiment, one or both jaw members  70  and  150  are operatively mounted to a guide mechanism, such as a rail and track system. In this configuration, as the jaw members  70  and  150  move along their arc pattern between the home position and the crimp position, the nest  184  and the indentor  186  can pivot so that they remain aligned to ensure a consistent crimp. 
     Turning to  FIGS.  43 - 47   , another exemplary embodiment of the working head assembly  60  of a tool  10  will be described. In this exemplary embodiment, the handle assembly  20  of the tool  10  is the same as the handle assembly described above and for ease of description is not repeated. In this exemplary embodiment, the structure of the cooperating jaws differ and to the extent they differ will be described in more detail. However, the coupling of the first jaw member  70  and the second jaw member  150  to the handle assembly  20  is the same as described above and the movement of the first jaw member  70  and the second jaw member  150  is substantially the same as described above and is not repeated. Accordingly, common elements of the first and second jaw members between the different embodiments described herein will utilize the same reference numerals. 
     As shown in  FIGS.  43  and  44   , in this exemplary embodiment, the distal end portion  74  of the first jaw member  70  includes a substantially flat surface  74   a  that acts as a stop, and the distal end portion  154  of the second jaw member  150  includes a raised surface or bumper  154   a  with a substantially flat surface as a face. The stop  74   a  and bumper  154   a  are used during a crimping operation to inhibit the indentor  158  from contacting the surfaces  78   a ,  78   b  and  78   c  of the nest  78  during the crimping operation. More specifically, as the jaw members  70  and  150  move from the open position toward the fully seated position, the bumper  154   a  of the second jaw member  150  contacts the stop  74   a  of the first jaw member  70  thus limiting the angular motion or arcuate motion of the jaw members inhibiting the indentor  158  from contacting the surfaces  78   a ,  78   b  and  78   c  of the nest  78 . 
     Referring to  FIGS.  44 - 47   , the distal end portion  74  of the first jaw member  70  may also include a hinge region  77 . In the embodiment shown in  FIGS.  44  and  45   , the hinge region  77  includes an opening  79 , such as slot, that is positioned adjacent an outer surface of the body  72  in proximity to the nest  78 . The hinge region  77  is provided as a fail-safe mechanism such that in the event the nest  78  were to fail during, for example, a crimping operation, the failure would be directed toward the hinge region  77 , here opening  79 , so that at least a portion of the distal end portion  74  of the first jaw member  70  would bend outwardly in a direction away from the second jaw member  150 , as shown by the arrows in  FIG.  45   . This bending of the at least a portion of the distal end portion  74  absorbs the nest failure while maintaining a connection between the portion of the nest that failed and the body  72 . In the embodiment of  FIGS.  46  and  47   , the hinge region  77  is formed by annealing a portion of the distal end portion  74  of the first jaw member  70 . By annealing the metal body  72 , the physical and possibly chemical properties of the metal are altered to increase the plastically, e.g., ductility and/or malleability, of the metal to reduce its hardness and allowing the metal to deform under stress, e.g., tensile stress or compression stress, without fracturing. Similar to the embodiment of  FIG.  45   , the hinge region  77  is provided as a fail-safe mechanism such that in the event the nest  78  were to fail during, for example, a crimping operation, the failure would be directed toward the hinge region  77  so that at least a portion of the distal end portion  74  of the first jaw member  70  would bend outwardly in a direction away from the second jaw member  150 , as shown by the arrows in  FIG.  47   . This bending of the at least a portion of the distal end portion  74  absorbs the nest failure while maintaining a connection between the portion of the nest that failed and the body  72 . 
     Referring to  FIG.  48   , in this exemplary embodiment, the first surface segment  88   a , second surface segment  88   b  and third surface segment  88   c  of the cam surface  88  differ from the cam surface segments in the embodiments described above. In this exemplary embodiment the first surface segment  88   a  is a linear surface, the second surface segment  88   b  is a linear surface, and the third surface segment  88   c  is an acute bend “B.” The acute bend of the third surface segment  88   c  is provided to generate enough available force on the jaw member sufficient to fully deform the barrel of any termination within the nest  78 , e.g., the barrel of termination  200 , that is within the rated range of terminations the tool  100  is capable of crimping. The force generated may be in the range of about, for example, 9000 lbs. Preferably, the acute bend of the third surface segment  88   c  is between about 45 degrees and 90 degrees relative to the first surface segment  88   a . Similarly, the first surface segment  170   a , second surface segment  170   b  and third surface segment  170   c  of the cam surface  170  differ from the cam surface segments in the embodiments described above. In this exemplary embodiment, the first surface segment  170   a  is a linear surface, the second surface segment  170   b  is a linear surface, and the third surface segment  170   c  is an acute bend “B.” The acute bend of the third surface segment  170   c  is provided to generate enough available force on the jaw member sufficient to fully deform the barrel of a termination within the nest  78 , e.g., the barrel of termination  200 , that is within the rated range of terminations the tool  100  is capable of crimping. The force generated may be in the range of about, for example, 9000 lbs. Preferably, the acute bend of the third surface segment  170   c  is between about 45 degrees and 90 degrees relative to the first surface segment  170   a    
     Referring to  FIGS.  48 - 51   , when the jaw members  70  and  150  are in the home position, the first surface segment  88   a  is the at-rest position of roller  92  and the first surface segment  170   a  is the at rest position of roller  94 , similar to that seen in  FIG.  21   . When the jaw members  70  and  150  are in the crimp position, the second surface segment  88   b  is at the crimp position of roller  92  and the second surface segment  170   b  is at the crimp position of roller  94 , similar to that in  FIG.  24   . The operation of the nest  78  and indentor  158  for crimping a termination  200  with a large barrel will be described. Initially, with the jaw members  70  and  150  in the home position, a barrel of termination  200  is inserted between the jaw members and a conductor (not shown) is inserted into the barrel. The tool  10  is activated using for example the switches  48  or  50 , until the rollers  92  and  94  move from their respective at-rest first surface segments  88   a  and  170   a  to their respective third surface segments  88   c  and  170   c  generating sufficient force for the impacting segment “I S ” of the indentor  158  to impart the initial deformation of the barrel of the termination  200  and thus begin crimping the conductor (not shown) to the termination  200 , as seen in  FIG.  49   . Further activation of the tool  10  causes the rollers  92  and  94  to move further along the cam surfaces  88  and  170  to the second surface segments  88   b  and  170   b  applying additional force on the barrel of the termination  200  to continue deforming the barrel and thus further crimping the conductor (not shown) to the termination  200 , as seen in  FIG.  50   . Further activation of the tool  10  causes the rollers  92  and  94  to move further along the second surface segments  88   b  and  170   b  of the cam surfaces  88  and  170  applying additional force on the barrel of the termination  200  to further deform the barrel and complete the crimp operation such that the conductor (not shown) is crimped to the termination  200 , as seen in  FIG.  51   . An example of the final deformation of the barrel of the termination after a crimping operation is shown in  FIG.  52   . It is noted that since the movement and operation of the jaw members  70  and  150  is the same as described above in reference to, for example,  FIGS.  25 - 29   , the final deformation of the barrel of the termination after a crimping operation is shown in  FIG.  52    is substantially the same as the final deformation of the barrel of the termination after a crimping operation is shown in  FIG.  29   . 
     It is noted that in the exemplary embodiment of  FIGS.  43 - 52   , the available output force applied by the jaw members  70  and  150  on the barrel of a termination peaks as the rollers  92  and  94 , similar to the rollers seen in  FIG.  21   , advance across the cam surface  88   c  and  170   c , and then decreases as the rollers advance across cam surfaces  88   b  and  170   b . This is done to limit the available force applied by the jaw members  70  and  150  on the barrel of a termination in order to induce the poppet valve  56 , seen in  FIG.  2   , to activate in order to stop the crimping cycle before the termination is over-crimped. This activation of the poppet valve  56  happens while the rollers  92  and  94  are on specific locations on cam surfaces  88   b  and  170   b , which depend on the diameter of the barrel of the termination being crimped. For larger terminations the poppet valve  56  activates when the rollers  92  and  94  are advancing along cam surfaces  88   b  and  170   b  but are in close proximity to the bend “B,” i.e., closer to the cam surfaces  88   c  and  170   c  respectively. For medium terminations the poppet valve  56  activates when the rollers  92  and  94  are advancing further along cam surfaces  88   b  and  170   b  but are intermediate proximity to the bend “B,” i.e., intermediate proximity to the cam surfaces  88   c  and  170   c  respectively. For smaller connectors the poppet valve  56  activates when the rollers  92  and  94  are advancing further along cam surfaces  88   b  and  170   b  but are further away from the cam surfaces  88   c  and  170   c  respectively relative to the intermediate proximity. 
     The foregoing embodiments and advantages are merely exemplary and are not to be construed as limiting the scope of the present invention. The description of an exemplary embodiment of the present invention is intended to be illustrative, and not to limit the scope of the present invention. Various modification, alternatives and variations will be apparent to those of ordinary skill in the art and are intended to fall within the scope of the invention.