Apparatus for applying deformable metal fastener clips to concrete reinforcement steel and the like

• US 5,881,452 A
• Filed: 11/05/1997
• Issued: 03/16/1999
• Est. Priority Date: 09/10/1997
• Status: Expired due to Fees

• Current Assignee: Nowell A. Carter, Stephen C. Nowell III
• Original Assignee: Nowell A. Carter, Stephen C. Nowell III
• Inventors: Nowell, Stephen C. III, Nowell, A. Carter
• Primary Examiner(s): Bryant, David P.
• Application Number:
  US08/968,829
• Time in Patent Office: 496 Days
• Field of Search: 29/897.34, 29/460, 29/513, 29/525.05, 29/816, 29/243.56, 72/409.02, 72/409.03, 72/453.16, 52/685, 52/686, 52/688, 52/665, 52/719
• US Class Current: 29/816
• CPC Class Codes: B25B 27/146 Clip clamping hand tools
• CPC Class Codes: E04G 21/122 Machines for joining reinforcing bars
• CPC Class Codes: Y10T 29/53513 Means to fasten by deforming
• CPC Class Codes: Y10T 29/53783 Clip applier

Abstract

A hand held applicator tool for applying deformable metal fastener clips to secure together reinforcement steel members used in concrete construction. The concrete reinforcement steel members are used to strengthen concrete structures in a known manner and can be in the form of wire mesh sheets or rebar positioned in a grid pattern. The deformable metal fastener clips are generally U-shaped members that are open on one side before being deformed so that the fastener clips can be easily placed over the reinforcement steel members. The tool comprises a frame, an anvil supported at one end of the frame, a movable blade assembly supported for sliding movement along the frame toward the anvil, and a handle for manipulating and positioning the tool. The movable blade assembly has a generally U-shaped receptacle for holding a fastener clip. The anvil has a pair of machined grooves for guiding the first and second legs of a fastener clip generally toward one another to close the open side of the fastener clip and deform the first and second legs to clamp tightly around the reinforcement members. The steel reinforcement members can thus be secured together in substantially less time than with other conventional methods, and with substantially less cost in both materials and labor. The applicator tool design can also be used for applying deformable fastner rings during the manufacture of automotive seating, upholstery, furniture, bedding, and other applications where hog ring fasteners are conventionally used.

Claims

1. An apparatus for securing two or more members together using deformable fastener clips, the fastener clips each comprising a generally U-shaped member having an open side defined by first and second deformable legs, the apparatus comprising:

a frame having a handle for positioning the apparatus relative to the members to be secured together, said-frame comprising an anvil supporting member having an anvil receiving groove;

an anvil received in said anvil receiving groove and secured in place by a fastener means, said anvil having at least one machined groove for guiding the first and second legs of a fastener clip to deform around the members to be secured together; and

a movable blade assembly having a generally U-shaped receptacle for accommodating one of the fastener clips, said U-shaped receptacle having an open side facing said anvil and said anvil receiving groove, said blade assembly being movable relative to said anvil to push a fastener clip held in said U-shaped receptacle against said anvil to cause the first and second legs of the fastener clip to be deformed around the members to be secured together.

2. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said anvil comprises two machined grooves for guiding the first and second legs, respectively, of a fastener clip held in said U-shaped receptacle, said two machined grooves being positioned generally side-by-side with each other and being canted relative to a plane of the fastener clip held in said U-shaped receptacle, whereby the legs of the fastener clip can be coplanar with a body portion of the fastener clip without causing the legs to abut and interfere with each other as the fastener clip is deformed by the anvil.

3. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, further comprising a drive means connected to said movable blade assembly for moving said blade assembly linearly toward and away from said anvil.

4. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 3, further comprising an actuating lever positioned adjacent to said handle, said actuating lever being operable to cause said drive means to move said blade assembly toward said anvil.

5. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said frame comprises a generally L-shaped portion supporting said anvil, first and second parallel guide portions arranged to guide respective edges of said movable blade assembly as said blade assembly is moved linearly toward and, away from said anvil, and an entrance opening defined between an end of said first guide portion and an end of said generally L-shaped portion of said frame for receiving the members to be secured together between said movable blade assembly and said anvil.

6. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 5, wherein said frame further comprises a base portion extending between said first and second guide portions, said base portion supporting a piston and cylinder drive assembly having a member connected to said movable blade assembly for moving said blade assembly along said first and second parallel guide portions toward said anvil, and said anvil receiving groove an said anvil being located on a side of said movable blade assembly opposite from said base portion and said piston and cylinder drive assembly.

7. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 5, wherein said anvil has a recess extending from one side of the anvil to the other side of the anvil for receiving at least a portion of one of the members to be secured together, said recess having a curvature about a longitudinal axis thereof, a radius of said curvature being such that two members to be secured together, each having approximately a same radius as said radius of curvature of said recess, can be passed through said entrance opening simultaneously, said anvil having two grooves formed within said recess for guiding the first and second legs, respectively, of a fastener clip held in said U-shaped receptacle.

8. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 7, wherein said recess extends across said anvil at an angle from one side of the anvil to the other side of the anvil for receiving a portion of one of two members to be secured together, said angle being such that said longitudinal axis of said recess is not perpendicular to a plane of the fastener clip held in said U-shaped receptacle.

9. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 7 wherein said longitudinal axis of said recess forms an angle with a plane of the fastener clip held in said U-shaped receptacle of approximately 45 degrees.

10. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said anvil receiving groove has a generally dovetail-shaped cross-section which prevents removal of said anvil from said anvil receiving groove in a direction toward said movable blade assembly and permits removal of said anvil by sliding said anvil through an open free end of the anvil supporting member.

11. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said anvil supporting member has a through opening when said anvil is removed, said through opening being large enough to permit said movable blade assembly to pass therethrough for removal of the blade assembly from said frame.

12. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said movable blade assembly is magnetized to help keep the fastener clips within the U-shaped receptacle until the fastener clips are deformed around the members to be secured together.

13. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said frame is generally rectangular-shaped with a first side supporting said anvil and said anvil receiving groove, a second side supporting a drive means for moving said blade assembly, and third and fourth sides having guiding means for guiding opposite edges of said blade assembly for linear movement relative to said anvil, said third side defining an opening for allowing the apparatus to be positioned over the members to be secured together, said first and second sides of said frame being connected together by said fourth side of said frame with said first side located on an opposite side of said blade assembly from said second side.

14. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, further comprising a magazine containing a supply of fastener clips, said magazine being mounted to said apparatus with a first end of the magazine adjacent said generally U-shaped receptacle of the blade assembly, whereby the fastener clips are supplied by said magazine to said generally U-shaped receptacle.

15. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein each of said fastener clips comprises a curved body portion connecting said first and second deformable legs, said curved body portion having a radius of curvature which is the same as or slightly larger than a radius of the members to be secured together, said first and second deformable legs of each fastener clip each having a length which is two to six times the radius of said curved body portion of the fastener clip.

16. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said anvil and said movable blade assembly are each detachable from said frame upon removal of a single fastening screw securing said anvil to said frame and a single fastening screw securing said blade assembly to a connecting member of a drive means for moving the blade assembly.

17. The apparatus for securing two or more members together using deformable fastener clips as set forth in claim 1, wherein said handle comprises an elongated portion having a first end attached to said frame and a second end spaced a distance from said frame, said handle further comprising a hand grip secured to said second end of said elongated portion and a stabilizing grip member secured to said elongated portion and projecting outwardly therefrom between said first and second ends of the elongated portion, whereby said apparatus can be easily manipulated using said hand grip and said stabilizing grip member.

18. A system for reinforcing concrete structures, comprising:

a plurality of reinforcement members to be embedded in concrete;

a plurality of generally U-shaped, deformable fastener clips which are each adapted to be closed about two or more adjacent reinforcement members to secure said reinforcement members together in a pattern, said fastener clips each having an open side defined by first and second deformable legs; and

an apparatus for deforming said deformable fastener clips around said adjacent reinforcement members to secure said reinforcement members together, said apparatus comprising;

a frame having a handle for positioning the apparatus relative to said reinforcement members;

an anvil supported at one end of said frame, said anvil having at least one machined groove for guiding said first and second legs of each fastener clip to deform around said reinforcement members;

a movable blade assembly having a generally U-shaped receptacle for accommodating one of said fastener clips at a time, said U-shaped receptacle having an open side facing said anvil, said blade assembly being movable relative to said anvil to push the fastener clip held in said U-shaped receptacle against said anvil to cause the first and second legs of the fastener clip to be deformed around the reinforcement members to secure the reinforcement members together; and

a drive means connected to said movable blade assembly for moving said blade assembly linearly toward and away from said anvil;

said frame having an opening adjacent one end of said anvil through which two of said reinforcement members can pass simultaneously and be positioned between said anvil and said movable blade assembly; and

said anvil has a recess extending from one side of the anvil to the other side of the anvil for receiving at least a portion of one of said reinforcement members, said recess having curvature about a longitudinal axis with a radius approximately equal to a radius of said reinforcement members.

19. The system for reinforcing concrete structures according to claim 18, wherein both legs of each fastener clip are coplanar with a body portion of the fastener clip, and wherein said anvil comprises two machined grooves for guiding said first and second legs, respectively, of the fastener clip held in said U-shaped receptacle, said two machined grooves being canted relative to a plane of the fastener clip held in said U-shaped receptacle, whereby said anvil is arranged to guide the legs of the fastener clip held in the U-shaped receptacle to prevent the legs from abutting and interfering with each other as the fastener clip is deformed by the anvil.

20. The system for reinforcing concrete structures according to claim 18. wherein said frame is generally rectangular-shaped with a first side supporting said anvil a second side supporting said drive means for moving said blade assembly, and third and fourth sides having guiding means for guiding opposite edges of said blade assembly for linear movement relative to said anvil, one of said third and fourth sides defining said opening for allowing the apparatus to be positioned over the reinforcement members to be secured together.

21. The system for reinforcing concrete structures according to claim 18, wherein each of said fastener clips comprises a curved body portion connecting said first and second deformable legs, said curved body portion having a radius of curvature which is the same as or slightly larger than a radius of the reinforcement members to be secured together, said first and second deformable legs of each fastener clip each having a length which is two to six times the radius of said curved body portion of the fastener clip.

22. The system for reinforcing concrete structures according to claim 18, wherein said longitudinal axis of said recess is approximately coaxial with a longitudinal axis of one of said reinforcement members received in said recess, and said longitudinal axis of said recess extends at a nonperpendicular angle relative to a plane of the U-shaped fastener clip held in the movable receptacle.

23. An apparatus for securing two or more members together using deformable fastener clips, the fastener clips each comprising a generally U-shaped member having an open side defined by first and second deformable legs, the apparatus comprising:

a frame having a handle for positioning the apparatus relative to the members to be secured together;

an anvil supported at one end of said frame, said anvil having at least one machined groove for guiding the first and second legs of a fastener clip to deform around the members to be secured together, said anvil having a recess extending from one side of the anvil to the other side of the anvil for receiving a portion of one of the members to be secured together, said recess having a curvature about a longitudinal axis thereof, a radius of said curvature being such that two members to be secured together, each having approximately a same radius as said radius of curvature of said recess, can be passed through an entrance opening of said frame simultaneously;

a movable blade assembly having a generally U-shaped receptacle for accommodating one of the fastener clips, said U-shaped receptacle having an open side facing said anvil, said blade assembly being movable relative to said anvil to push a fastener clip held in said U-shaped receptacle against said anvil to cause the first and second legs of the fastener clip to be deformed around the members to be secured together; and

said longitudinal axis of said recess forms an angle with a plane of the fastener clip held in said U-shaped receptacle of approximately 45 degrees.