Stud punch tool

Information

  • Patent Grant
  • 6647630
  • Patent Number
    6,647,630
  • Date Filed
    Friday, February 2, 2001
    24 years ago
  • Date Issued
    Tuesday, November 18, 2003
    21 years ago
Abstract
The present invention provides a novel stud punch tool for punching a stud. The tool includes a first member, a second member, a third member pivotally connected to the first and second members, and a punch assembly. The first member has an opening for receiving the stud and a bore that is in communication with the opening and which allows the punch assembly to move through the bore and the opening to punch the stud. The second member has slots therein to allow the punching assembly to be slidably mounted therein such that a portion of the punch assembly is capable of being positioned at a first end of the slot when the second member is parallel to the first member and such that the portion is capable of being positioned at a second end of the slots when the second member is angled from the first member.
Description




BACKGROUND OF THE INVENTION




For many years, those working in the plumbing industry have required tools that would allow them to punch holes in steel studs and/or sheet metal to allow them to run plumbing pipe therethrough. The tools that have evolved for this purpose have had some drawbacks. One such drawback is that the hand operated punches have required a large amount of handle force to punch a large hole, i.e., one with a diameter of over two and a half inches. If the required handle force were reduced, the punch was usually not provided with enough travel to allow the punch to clear the stud. Therefore, there is a need in the plumbing industry for a punch tool that is capable of punching holes of a large diameter that requires a relatively low handle force but that also provides enough travel for the punch to clear the stud.




OBJECTS AND SUMMARY OF THE INVENTION




A primary object of the invention is to provide a stud punch tool for the punching of steel studs and/or sheet metal that will allow the plumbing industry to punch holes therein large enough to run two-inch PVC pipe.




Another object of the invention is to provide a stud punch that keeps handle force low to punch a hole while providing enough travel so that the punch can clear a stud to allow the tool to be easily placed on and off of the stud.




Briefly, and in accordance with the foregoing, the present invention provides a novel stud punch tool for punching a stud. The tool includes a first member, a second member, a third member pivotally connected to the first and second members, and a punch assembly. The first member has an opening for receiving the stud and a bore that is in communication with the opening and which allows the punch assembly to move through the bore and the opening to punch the stud. The second member has slots therein to allow the punching assembly to be slidably mounted therein such that a portion of the punch assembly is capable of being positioned at a first end of the slots when the second member is parallel to the first member and such that the portion is capable of being positioned at a second end of the slots when the second member is angled from the first member.











BRIEF DESCRIPTION OF THE DRAWINGS




The features of the present invention which are believed to be novel are described in detail hereinbelow. The organization and manner of the structure and operation of the invention, together with further objects and advantages thereof, may best be understood by reference to the following description taken in connection with the accompanying drawings wherein like reference numerals identify like elements in which:





FIG. 1

is a side elevational view of a stud punch tool of the present invention with a punch in a punching position, such punch being shown partially in phantom lines;





FIG. 2

is a top plan view of the stud punch tool shown in

FIG. 1

;





FIG. 3

is a side elevational view of the stud punch tool with the punch in a non-punching position, such punch being shown partially in phantom lines;





FIG. 4

is a perspective view of a first member of the stud punch tool;





FIG. 5

is a side elevational view of the first member shown in

FIG. 4

;





FIG. 6

is a cross-sectional view of the first member taken along line


6





6


of

FIG. 5

;





FIG. 7

is a cross-sectional view of the first member taken along line


7





7


of

FIG. 5

;





FIG. 8

is a cross-sectional view of the first member taken along line


8





8


of

FIG. 5

;





FIG. 9

is a perspective view of a die of the stud punch tool;





FIG. 10

is a perspective view of a second member of the stud punch tool;





FIG. 11

is a side elevational view of the second member shown in

FIG. 10

;





FIG. 12

is a perspective view of a third member of the stud punch tool; and





FIG. 13

is an exploded, side, elevational view of the assembly for connecting the punch shaft to the second member.











DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS




While this invention may be susceptible to embodiment in different forms, there is shown in the drawings and will be described herein in detail, a specific embodiment with the understanding that the present disclosure is to be considered an exemplification of the principles of the invention, and is not intended to limit the invention to that as illustrated.




The present invention provides a stud punch tool


20


which generally includes a first member


22


, a second member


24


, a third member


26


which is pivotally connected to the first member


22


and to the second member


24


, and a punch assembly


28


.





FIGS. 4-8

illustrate the first member


22


of the stud punch tool


20


. The first member


22


is formed of a body portion


30


and an elongated handle portion


32


which is connected to a first end of the body portion


30


. It should be noted that the handle portion


32


can be formed as a separate component than the body portion


30


and attached thereto or can be integrally formed with the body portion


30


. The handle portion


32


preferably has a material thereon that facilitates the gripping of the handle portion


32


by a user's hand.




The body portion


30


includes a head portion


34


at a second end thereof and an elongated portion


36


that is integrally formed with the head portion


34


and extends from the head portion


34


to the handle portion


32


. The portion


36


has a thickness along its outer edges that is generally comparable to a thickness of the handle portion


32


. Proximate to the connection of the handle portion


32


and the portion


36


, the portion


36


has a section


38


which has a height which is larger than a height of the handle portion


32


. The portion


36


also has a section


40


which is distant from the handle portion


32


, but proximate to the head portion


34


, and which has a height that is larger than the height of the section


38


. The head portion


34


generally has a height that is comparable to the height of the section


40


which is proximate thereto. The head portion


34


has a thickness that is larger than that of the portion


36


and the handle portion


32


.




The head portion


34


has an opening


42


therein defining a first portion


44


and a second portion


46


, such that the head portion


34


is generally C-shaped.




The first portion


44


has a top


48


, a bottom


50


, and a continuous side


52


therebetween. The bottom


50


is proximate to the opening


42


in the head portion


34


. The top


48


extends from the second side of the body portion


30


upwardly and at an angle towards the section


40


. As best illustrated in

FIGS. 4 and 7

, the first portion


44


of the head portion


34


has a generally circular cross-section. A generally circular bore


54


extends through the first portion


44


from the top


48


to the bottom


50


such that the bore


54


is in communication with the opening


42


of the head portion


34


. The bore


54


is dimensioned such that the punching assembly


28


, which will be described in more detail herein, can move therethrough. A flange


56


extends outwardly from the side


52


at the second end of the body portion


30


. The flange


56


has an aperture


58


therethrough for allowing the third member


26


to be pivotally connected to the first member


22


, as discussed in more detail herein.




The second portion


46


has a top


60


, a bottom


62


, and a continuous side


64


therebetween. The top


60


is positioned below the opening


42


of the head portion


34


. The bottom


62


of the second portion


46


extends from the second side of the body portion


30


downwardly and at an angle towards the section


40


. The bottom


50


of the first portion


44


and the top


60


of the second portion


46


are separated by the opening


42


. The bottom


50


of the first portion


44


and the top


60


of the second portion


46


are also generally parallel with one another. As best illustrated in

FIGS. 4 and 6

, the second portion


46


of the head portion


34


has a generally circular cross-section. A generally circular bore


66


extends through the second portion


46


from the top


60


to the bottom


62


such that the bore


66


is in communication with the opening


42


of the head portion


34


. The bore


66


is dimensioned such that the punching assembly


28


, which will be described in more detail herein, can move into the bore


66


. The bore


54


and the bore


66


are aligned with each other. An aperture


68


extends through the continuous side


64


and is in communication with the bore


66


.




A die


70


is positioned within the bore


66


proximate to the top


60


thereof. The die


70


is connected to the second portion


46


of the head portion


34


by suitable means (not shown), such as a screw, which can be inserted through aperture


68


in the second portion


46


. As best illustrated in

FIG. 9

, the die


70


is generally in the form of a cylinder and is sized to fit snugly against the second portion


46


of the head portion


34


within the bore


66


. The die


70


has a circular bore


72


therethrough such that the punching assembly


28


can move through the die


70


during the punching process.





FIGS. 10 and 11

illustrate the second member


24


of the stud punch tool


20


. The second member


24


has an elongated body portion


74


, an elongated handle portion


76


and a stop


78


(see

FIG. 11

for the stop


78


). The handle portion


76


is connected to a first end of the body portion


74


. It should be noted that the handle portion


76


can be formed as a separate component than the body portion


74


and attached thereto or can be integrally formed with the body portion


74


. The handle portion


76


preferably has a material thereon that facilitates the gripping of the handle portion


76


by a user's hand.




The body portion


74


has an elongated first portion


80


and a second portion


82


. The first portion


80


is connected to the second portion


82


at one end thereof and to the handle portion


76


at the opposite end thereof.




The first portion


80


includes a first section


84


, a second section


86


, and a third section


88


. The first section


84


is connected to the handle portion


76


and the third section


88


is connected to the second portion


82


. The first section


84


and the third section


88


are parallel to each other and the second section


86


is curved and provided between the first and third sections


84


,


88


. This causes the first portion


80


to generally mirror the change in height in the portion


36


of the first member


22


when the handle portion


32


of the first member


22


and the handle portion


76


of the second member


24


are generally parallel to one another as shown in FIG.


1


. The first portion


80


has a thickness that is generally comparable to a thickness of the handle portion


76


.




The second portion


82


is generally U-shaped and includes a base


90


and a pair of extending sections


92


,


94


which are separated by an opening


96


. The U-shaped second portion


82


has a thickness that is greater than the thickness of the first portion


80


because of the opening


96


. The U-shaped second portion


82


has a height which is comparable to the height of the third section


88


. The base


90


connects the second portion


82


to the first portion


80


.




Each extending section


92


,


94


has an aperture


98


,


100


therethrough proximate to a respective end that is opposite to the connection point to the base


90


. Each aperture


98


,


100


is in communication with the opening


96


. The apertures


98


,


100


are also in axial alignment with one another. The apertures


98


,


100


allow the third member


26


to be pivotally connected to the second member


24


, as is discussed in more detail herein.




Each extending section


92


,


94


further includes an elongated slot


102


,


104


therein. The slots


102


,


104


are positioned in the extending sections


92


,


94


between the apertures


98


,


100


and the base


90


of the U-shaped second portion


82


. Each slot


102


,


104


is in communication with the opening


96


. The slots


102


,


104


are also in axial alignment with one another and are generally S-shaped. The slots


102


,


104


allow for the attachment, and the movement, of the punching assembly


28


relative to the second member


24


, the structure and operation of which will be described herein in further detail.




The stop


78


, see

FIG. 11

, of the second member


24


is located on a bottom side of the third section


88


of the first portion


80


proximate to the connection of the first portion


80


and the second portion


82


and extends therefrom. The use of the stop


78


will be discussed with regard to the operation of the stud punch tool


20


herein.




Attention is now directed to FIG.


12


and the third member


26


of the stud punch tool


20


. The third member


26


is formed of an elongated U-shaped portion


106


having a first pair of extending portions


108


,


110


extending from one end thereof and a second pair of extending portions


112


,


114


extending from an opposite end thereof. The U-shaped portion


106


has a generally curved base portion


116


, a straight portion


118


extending from one end of the base portion


116


and a straight portion


120


extending from the other end of the base portion


116


. The straight portions


118


,


120


are parallel to one another.




Extending portion


108


extends from one end of straight portion


118


and is angled relative to straight portion


118


. Extending portion


108


has an aperture


122


therethrough at its free end. Extending portion


110


extends from one end of straight portion


120


and is angled relative to straight portion


120


. Extending portion


110


has an aperture


124


therethrough at its free end. Extending portions


108


,


110


are parallel to each other and angled relative to the respective straight portions


118


,


120


at the same angle such that aperture


122


and aperture


124


are in axially alignment with one another.




Extending portion


112


extends from an opposite end of straight portion


118


than does extending portion


108


and is angled relative to straight portion


118


. Extending portion


112


has an aperture


126


therethrough at its free end. Extending portion


114


extends from an opposite end of straight portion


120


than does extending portion


110


and is angled relative to straight portion


120


. Extending portion


114


has an aperture


128


therethrough at its free end. Extending portions


112


,


114


are parallel to each other and angled relative to the respective straight portions


118


,


120


at the same angle such that aperture


126


and aperture


128


are in axially alignment with one another.




The extending portions


108


,


110


are positioned around the flange


56


of the first member


22


such that the apertures


122


,


124


are in axial alignment and communication with the aperture


58


of the flange


56


. A connector


130


, such as a pin, is inserted through the apertures


122


,


58


,


124


to secure the flange


56


and the extending portions


108


,


110


together while still allowing the rotation of the third member


26


and the first member


22


with respect to one another.




The extending portions


112


,


114


are positioned within the opening


96


of the U-shaped second portion


82


of the second member


24


between the extending sections


92


,


94


such that the apertures


126


,


128


of the extending portions


112


,


114


are in axial alignment and communication with the apertures


98


,


100


of the extending sections


92


,


94


of the second portion


82


of the second member


24


. A connector


132


, such as a pin, is inserted through the apertures


98


,


124


,


126


,


100


to secure the extending sections


92


,


94


and the extending portions


112


,


114


together while still allowing the rotation of the third member


26


and the second member


24


with respect to one another.





FIGS. 1-3

illustrate the punching assembly


28


of the stud punch tool


20


. The punching assembly


28


includes a punch


134


and a punch shaft


136


connected at a first end thereof to a first end of the punch


134


by suitable connection means


138


.




The punch


134


and the connection means


138


are conventional and as such, the details of the punch


134


and the connection means


138


are not described herein. The punch


134


is used for cutting/punching a steel stud (not shown) and has an edge formed for such purpose. The punch


134


has a diameter that is slightly less than that of the circular bore


72


in the die


70


mounted in the head portion


34


and of the bores


54


,


56


provided in the head portion


34


such that the punch


134


can move through the bores


54


,


66


and the die


70


during the punching process. It should be noted that the die


70


can be removed from the head portion


34


such that dies having different sized bores therethrough can be attached within the bore


66


. Similarly, the punch


134


can be removed and replaced with punches having different diameters that will allow the punch to move through the die should the die be changed. Such removability and replaceability of the die


70


and punch


134


allows a user to use the stud punch tool


20


to punch a plurality of different sized holes and to replace a die and punch should they become worn.




The punch shaft


136


is an elongated solid cylinder. An aperture (not shown) extends through the punch shaft


136


proximate to a second end thereof, which is opposite to the first end.




The second end of the punch shaft


136


is connected to the second member


24


by a connection assembly


142


, see FIG.


13


. The second end of the punch shaft


136


is positioned within the opening


96


between the U-shaped second portion


82


such that the aperture of the punch shaft


136


is in axial alignment with a portion of the elongated slots


102


,


104


of the U-shaped second portion


82


.




The connection assembly


142


includes a connector


144


, a pair of washers


146


,


148


and a pair of screws


150


,


152


. The connector


144


, such as a standoff, has openings


154


,


156


in both of its ends that are internally threaded. Each screw,


150


,


152


includes a head


158


,


160


having an unthreaded portion


162


,


164


extending therefrom which has a threaded portion


166


,


168


extending from the unthreaded portion


162


,


164


. Each washer


146


,


148


has an aperture


170


,


172


therethrough which has a diameter equal to the diameter of the unthreaded portion


162


,


164


of the respective screw


150


,


152


.




To connect the punch assembly


28


to the second member


24


, the connector


144


is inserted through the aperture


140


of the second end of the punch shaft


136


. The second end of the punch shaft


136


is then positioned between the slot


102


of the extending portion


92


and the slot


104


of the extending portion


94


. The screws


150


,


152


are placed through the apertures


170


,


172


of washers


146


,


148


such that a first side of the washers


146


,


148


abuts against the heads


158


,


160


of the respective screws


150


,


152


and are positioned around the unthreaded portions


162


,


164


of the screws


150


,


152


. The screws


150


,


152


are then placed through the slots


102


,


104


of the extending sections


92


,


94


and into the openings


154


,


156


of the connector


144


. The threaded portions


166


,


168


of the screws


150


,


152


are threaded into the openings


154


,


156


of the connector


144


. The unthreaded portions


162


,


164


of the screws


150


,


152


are positioned within the slots


102


,


104


, such that the unthreaded portions


162


,


164


of the screws


150


,


152


can slide within the slots


102


,


104


. A second side of the washers


146


,


148


abuts against the outside of the respective extending sections


92


,


94


. The connection assembly


142


connects the punching assembly


28


to the second member


24


.




An operation of the stud punch tool


20


of the present invention will now be discussed. The user uses the stud punch tool


20


of the present invention to punch a hole in, for instance, a steel stud or a piece of sheet metal to allow the user to run PVC pipe therethrough.




The user moves the second member


24


to a position as shown in

FIG. 3

by a pulling action, where the handle portion


76


of the second member


24


is not parallel to the handle portion


32


of the first member


22


. By positioning the second member


24


in this position, the first end of the punch shaft


136


is moved to the first end of the S-shaped slots


102


,


104


of the second portion


82


of the second member


24


. Because the first end of the punch shaft


136


is positioned at the first end of the S-shaped slots


102


,


104


, the punch


134


is positioned within the bore


54


of the first portion


44


of the head portion


34


. As the punch


134


is not positioned within the opening


42


of the head portion


34


, the user can position the steel stud or piece of sheet metal to be punched within the opening


42


of the head portion


34


and rest it on the die


70


.




When the steel stud or piece of sheet metal is properly positioned on the die


70


within the opening


42


of the head portion


34


, the user grips the handle portions


32


,


76


of both the first and second members


22


,


24


. The user then pushes the second member


24


toward the first member


22


until the stop


78


on the second member


24


abuts against the first member


22


when the two members


22


,


24


are generally parallel to one another, as illustrated in FIG.


1


.




By moving the second member


24


toward the first member


22


, the third member


26


pivots relative to the first member


22


and to the second member


24


. In addition, the second end of the punch shaft


136


slides within the S-shaped slots


102


,


104


from the first end of the slots


102


,


104


to the second end of the slots


102


,


104


. As the second end of the punch shaft


136


is moving from the first end of the slots


102


,


104


to the second end of the slots


102


,


104


due to the force being applied to the second member


24


, the first end of the punch shaft


136


causes the punch


134


to move through the bore


54


of the first portion


44


of the head portion


34


and into the opening


42


of the head portion


34


. The edge of the punch


134


comes into contact with the steel stud or piece of sheet metal in the opening


42


of the head portion


34


and the punch


134


punches through the steel stud or piece of sheet metal with the assistance of the die


70


helping to shear the steel stud or piece of sheet metal in conjunction with the punch


134


. The material of the steel stud or piece of sheet metal that is punched is then forced through the die


70


and the bore


66


of the second portion


46


by the punch


134


as it continues to move through the die


70


and the bore


54


of the second portion


46


. The material is expelled through the bore


66


of the second portion


46


.




After the hole is punched in the steel stud or piece of sheet metal, the user moves the second member


24


from its position as shown in

FIG. 1

back to a position as shown in

FIG. 3

by pulling the second member


24


away from the first member


22


. By moving the second member


24


back to this position, the third member


26


pivots relative to the first member


22


and the second member


24


. In addition, the second end of the punch shaft


136


slides from the second end of the slots


102


,


104


to the first end of the slots


102


,


104


. This movement in turn causes the punch


134


to move out of the bore


66


of the second portion


46


, through the opening


42


of the head portion


34


and into the bore


54


of the first portion


44


. After the punch


134


is removed from the opening


42


, the user is free to remove the tool


20


from the steel stud or piece of sheet metal. The steel stud or piece of sheet metal then has a hole punched therethrough such that the user can insert PVC pipe therein.




The slots


102


,


104


in the second portion


82


of the second member


24


create a mechanical advantage as the punch shaft


136


and the third member


26


are close together. The movement of the punch shaft


136


from one end of the slots


102


,


104


to punch a hole, to the other end of the slots


102


,


104


to lift the punch


134


clear of the stud, is a simple push or pull of the second member


24


. The elongated slots


102


,


104


further help keep the handle force low to punch the hole, but also provides enough travel so that the punch


134


can clear the stud, thus allowing the tool


20


to be easily placed on and off the stud. Also, because the pivot points are close together, the amount of force required to actuate the second member


24


is minimized.




It should be noted that the second portion


82


of the second member


24


need not be U-shaped, but rather could have a single extending portion having a single slot therethrough for connection of the punching assembly


28


and a single aperture therethrough for pivotal connection of the third member


26


. Should such a design be used, changes in the design of the punch shaft


136


would have to be made. The second end of the punch shaft


136


would have to have two extending portions having apertures therethrough such that the extending portions would extend around the single extending portion of the second portion of the second member. Each extending portion of the redesigned punch shaft would also have to have an aperture therethrough to allow for the connection of the extending portions to the second member through the slot of the second portion, all the while allowing the punch shaft to move from one end of the slot to another end of the slot. Such connections, while not described herein, would be obvious to one of ordinary skill in the art after a reading of the present disclosure.




It should further be noted that reference to tops, bottoms, sides, etc. as different parts of the invention are made for reference purposes only as the stud punch tool


20


does not necessarily have to be used in the manner shown in the illustrations, i.e., the stud punch tool


20


could be used by a user with the first and second members


22


,


24


being parallel to the ground.




While a preferred embodiment of the present invention is shown and described, it is envisioned that those skilled in the art may devise various modifications without departing from the spirit and scope of the foregoing description.



Claims
  • 1. A stud punch tool for punching a stud, comprising:a first member having first and second ends and an opening therein for receiving the stud, said first member further having a bore therethrough proximate to said first end thereof which is in communication with said opening; a second member having first and second ends and at least one elongated slot therein proximate to said first end thereof; a third member pivotally connected to said first end of said first member and pivotally connected to said first end of said second member; and a punch assembly, said punch assembly being slidable within said at least one slot of said second member, said punch assembly further being capable of moving through said bore and said opening of said first member for punching said stud.
  • 2. A stud punch tool as defined in claim 1, wherein said punch assembly includes a punch shaft having opposite ends and a punch connected to one said end of said punch shaft and said opposite end of said punch shaft being slidably mounted within said at least one slot of said second member.
  • 3. A stud punch tool as defined in claim 2, wherein said punch is sized to move through said bore of said first member.
  • 4. A stud punch tool as defined in claim 1, wherein said opening in said first member defines a C-shaped head of said first member such that said opening is positioned between a first portion of said C-shaped head and a second portion of said C-shaped head.
  • 5. A stud punch tool as defined in claim 4, wherein said bore of said first member extends through said first portion of said C-shaped head and into said second portion of said C-shaped head.
  • 6. A stud punch tool as defined in claim 1, wherein said opening is provided at said first end of said first member and a handle portion is provided at said second end of said first member.
  • 7. A stud punch tool for punching a stud, comprising:a first member having an opening therein for receiving the stud, said first member further having a bore therethrough in communication with said opening; a second member having at lease one elongated slot therein and opposite ends, said at least one slot being provided in one said end and a handle portion being provided at said opposite end; a third member pivotally connected to said first member and pivotally connected to said second member; and a punch assembly, said punch assembly being slidable within said at least one slot of said second member, said punch assembly further being capable of moving through said bore and said opening of said first member for punching said stud.
  • 8. A stud punch tool for punching a stud, comprising:a first member having an opening therein for receiving the stud, said first member further having a bore therethrough in communication with said opening; a second member having at least one elongated slot therein, said at least one slot being generally S-shaped; a third member pivotally connected to said first member and pivotally connected to said second member; and a punch assembly, said punch assembly being slidable within said at least one slot of said second member, said punch assembly further being capable of moving through said bore and said opening of said first member for punching said stud.
  • 9. A stud punch tool comprising:means for receiving a stud, wherein said receiving means has first and second opposite ends; means for punching the stud; means for moving said punching means, wherein said moving means has first and second opposite ends, said moving means comprises a member having at least one elongated slot therein and wherein a portion of said punching means is mounted in said at least one slot to slide from one end of said at least one slot to an opposite end of said at least one slot; and means for pivotally linking said receiving means at said first end thereof to said moving means at said first end thereof, said punching means being positioned between said first and second ends of said receiving means and between said first and second ends of said moving means.
  • 10. A stud punch tool comprising:means for receiving a stud; means for punching the stud; means for moving said punching means from a first position to a second position, said moving means comprising a member having at least one elongated slot therein, said at least one slot being generally S-shaped, a portion of said punching means being mounted in said at least one slot to slide from one end of said at least one slot to an opposite end of said at least one slot; means for pivotally linking said receiving means to said moving means.
  • 11. A stud punch tool comprising:means for receiving a stud; means for punching a stud; means for moving said punching means from a first position to a second position, said moving means comprising a member having at least one elongated slot therein, an end of said member having a handle portion, a portion of said punching means being mounted in said at least one slot to slide from one end of said at least one slot to an opposite end of said at least one slot; means for pivotally linking said receiving means to said moving means.
  • 12. A stud punch tool comprising:means for receiving a stud, wherein said receiving means has first and second opposite ends, said receiving means comprises a member having a first portion and a second portion extending from an end of said member, said first portion and said second portion defining an opening therebetween for receiving the stud, said receiving means has a bore therethrough that extends through said first portion and into said second portion; means for punching the stud, said punching means being capable of traveling through said vertical bore; means for moving said punching means, wherein said moving means has first and second opposite ends; and means for pivotally linking said receiving means at said first end thereof to said moving means at said first end thereof, said punching means being positioned between said first and second ends of said receiving means and between said first and second ends of said moving means.
  • 13. A stud punch tool for punching a stud, comprising:a first member having opposite ends, said first member having a handle portion at one end thereof and a head portion at an opposite end for receiving the stud, said head portion including a first portion and a second portion having an opening defined therebetween, said first member further having a bore extending through said first portion and said second portion of said head portion, said bore being in communication with said opening; a second member having a first end and a second end, said second member having a handle portion at said first end thereof and at least one S-shaped elongated slot at said second end thereof; a third member having a first end and a second end, said first end of said third member being pivotally connected to said first member, said second end of said third member being pivotally connected to said second end of said second member; a punch assembly including a punch shaft and a punch, said punch shaft having a first end and a second end, said first end of said punch being slidably connected to said second end of said second member through said at least one S-shaped elongated slot, said second end of said punch shaft being connected to said punch, said punch being sized to move through said bore of said first member.
US Referenced Citations (1)
Number Name Date Kind
5560110 Haines Oct 1996 A
Foreign Referenced Citations (2)
Number Date Country
637760 Apr 1935 DE
28437 Dec 1909 GB
Non-Patent Literature Citations (1)
Entry
Page 120 of Greenlee Product Catalog, Copyright 1990.