Pivoting jaw and motor-actuable handheld apparatus

Patent metadata

Field	Value
Publication number	US-10272482-B2
Application number	US-201414269716-A
Country	US
Kind code	B2
Filing date	May 5, 2014
Priority date	Dec 3, 2013
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

An assembly includes a first punching jaw, a second punching jaw pivotally connected to the first punching jaw, a punching stamp provided on one of the punching jaws and a punching opening provided on the other of the punching jaws, and a handheld apparatus connected to the jaws. When said handheld apparatus is actuated, the first ends of the jaws move toward each other to effect a punching process.

First claim

What is claimed is:

1. An assembly comprising:
a first punching jaw having a first end and a second end, the first punching jaw having an opening therethrough at the second end;
a second punching jaw having a first end and a second end, the first and second punching jaws being pivotally connected together and configured to pivot in a pivot plane about a common pivot axis between an open position and a punching position;
a first spring engaged with each punching jaw, wherein the first spring is configured to move the punching jaws to the open position;
a punching stamp provided on the first end of one of the punching jaws and a punching opening provided on the first end of the other of the punching jaws; and
a handheld apparatus connected to the first and second jaws comprising a rod having a first end and a second end, the rod extending through the opening in the first jaw, the second end of the rod being attached to the second punching jaw, a cylinder attached to the first end of the rod and bearing against the first punching jaw, the rod extending into the cylinder, and a second spring within the cylinder, the second spring bearing against the rod, wherein responsive to introduction of a hydraulic or pneumatic medium under pressure into the cylinder, the first ends of the punching jaws move toward each other to the punching position to affect a punching process and the rod is moved further into the cylinder, wherein movement of the rod takes place counter to a biasing force of the first and second springs, and compresses the first and second springs.

2. The assembly of claim 1 , wherein said handheld apparatus is linearly actuated on an actuation axis which is angled relative to the pivot axis.

3. The assembly of claim 2 , wherein the actuation axis is perpendicular to the pivot axis.

4. The assembly of claim 1 , wherein the pivot axis is provided between the first end of the punching jaws and the rod.

5. The assembly of claim 1 , wherein the pivot axis is between the rod and the second ends of the punching jaws.

6. The assembly of claim 1 , wherein
the handheld apparatus includes a spherical-cap section, and
the second punching jaw includes a concave pocket into which the spherical-cap section seats.

7. The assembly of claim 6 , wherein the rod extends through the spherical-cap section.

8. The assembly of claim 1 , wherein the punching jaws extend so as to cross one another.

9. The assembly of claim 1 , wherein the handheld apparatus comprises a gripping region and a user's hand can grip the gripping region to hold the handheld apparatus.

10. The assembly of claim 1 , wherein the second end of the rod extends through an opening in the second punching jaw, and the second end of the rod is attached to the second punching jaw by a retaining member engaged with the second end of the rod and bearing against the second punching jaw.

11. The assembly of claim 10 , wherein the retaining member comprises a removable clip.

12. The assembly of claim 11 , wherein the rod has engagement recesses, and the clip has teeth thereon, the teeth engaging within the engagement recesses on the rod.

13. The assembly of claim 1 , wherein the second end of the rod extends through an opening in the second punching jaw, and the rod comprises a head and a shank extending therefrom, the second end of the rod is attached to the second punching jaw by the head bearing against the second punching jaw.

14. The assembly of claim 1 , wherein the first spring surrounds the rod.

15. The assembly of claim 1 , further comprising a scraper part mounted on the punching stamp, a third spring mounted on the punching stamp and provided between the scraper part and the first end of the punching jaw on which the punching stamp provided, the third spring biasing the scraper part into a position which radially overlaps the punching stamp, the third spring acting in a same direction as the first and second springs.

16. An assembly comprising:
a first punching jaw having a first end and a second end, the first punching jaw having an unthreaded opening formed by a wall therethrough;
a second punching jaw having a first end and a second end, the second punching jaw having an unthreaded opening formed by a wall therethrough, the first and second punching jaws being pivotally connected together and configured to pivot in a pivot plane about a common pivot axis between an open position and a punching position, the openings in the first and second punching jaws aligning with each other and aligning with the pivot plane;
a spring engaged with each punching jaw, wherein the spring is configured to move the punching jaws to the open position;
a punching stamp provided on the first end of one of the punching jaws and a punching opening provided on the first end of the other of the punching jaws; and
a handheld apparatus comprising
a spherical-cap part engaged with the first punching jaw, the spherical-cap part having an opening therethrough,
a rod comprising a shank having first and second opposite ends and a head at the first end of the shank, the shank defining a longitudinal axis of the rod, the shank having a dimension transverse to the longitudinal axis of the rod, the shank extending through the unthreaded openings in the first and second punching jaws and through the opening in the spherical-cap part, the opening in the first punching jaw defining a dimension transverse to the longitudinal axis of the rod which is larger than the dimension of the rod such that a space is formed between the rod and the wall forming the opening in the first punching jaw, the opening in the second punching jaw defining a dimension transverse to the longitudinal axis of the rod which is larger than the dimension of the rod such that a space is formed between the rod and the wall forming the opening in the second punching jaw, the head engaging the spherical-cap part and being larger than the opening through the spherical-cap part such that the head cannot pass through the opening through the spherical-cap part,
a wrench connected to the first end of the rod, the wrench being a separate component from the jaws and removable from the first end of the rod, and
a nut threadedly attached to the second end of the rod and configured to engage the second punching jaw, the nut being larger than the opening through the second punching jaw such that the nut cannot pass through the opening through the second punching jaw, the nut being a separate component from the jaws and removable from the second end of the rod,
wherein the rod and the nut are freely rotatable around the longitudinal axis of the rod when the wrench is not attached to the first end of the rod, and
wherein when the nut is held stationary and when the wrench and rod are rotated together relative to the nut, the punching jaws and the spherical-cap part, at least one of the punching jaws moves in response such that the first ends of the punching jaws move toward each other to affect a punching process.

17. The assembly of claim 16 , wherein during a punching process the punching stamp passes through the punching opening.

Assignees

• Klauke Gmbh Gustav
• Greenlee Textron Inc
• Greenlee Tools Inc

Inventors

• Frenken Egbert
• Tully Gerald

Classifications

• B26F1/34

  power actuated (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title

• B21D28/26

  in sheets or flat parts · CPC title

• B21D28/34 Primary

  Perforating tools; Die holders · CPC title