Armored cable cutter with cutting blade retention

Patent metadata

Field	Value
Publication number	US-11110528-B2
Application number	US-201916547227-A
Country	US
Kind code	B2
Filing date	Aug 21, 2019
Priority date	Aug 31, 2018
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A cutting head for a hydraulic power tool includes a first jaw that includes a first ear configured with a slot for receiving a corresponding ear. The second jaw includes a second ear with a third ear bore that aligns in between a first ear bore and to a second ear bore of the first ear when the second ear is coupled in the slot of the first ear. The cutting head further includes a spring-biased flange coupled to a blade mounted to the first jaw and a retained coupled at a fixed position to a blade mounted to the second jaw. The retainer is configured to receive the flange during a cutting action such that the flange prevents the blades from shifting out of alignment during the cutting action.

First claim

I claim:

1. A cutting head for a hydraulic power tool, the cutting head comprising:
a hollow pin,
a first jaw disposed for rotation about an axis defined by the hollow pin, the first jaw comprising a first blade mounting surface having a first pair of screw bores configured to receive a first pair of blade mount screws and further comprising a first ear, wherein the first ear includes a first ear bore and a second ear bore for receiving the hollow pin and a slot for receiving a second ear;
a second jaw disposed for rotation about the axis defined by the hollow pin, the second jaw comprising a second blade mounting surface having a second pair of screw bores configured to receive a second pair of blade mount screws and further comprising the second ear having a third ear bore such that the third ear bore aligns in between the first ear bore and the second ear bore of the first ear when the second ear is coupled in the slot of the first ear;
a first blade mounted to the first blade mounting surface of the first jaw by the first pair of blade mount screws;
a second blade mounted to the second blade mounting surface of the second jaw by the second pair of blade mount screws;
a flange configured as a separate component from the first blade and coupled to and extending from the first blade; and
a retainer coupled to the second blade, the retainer having an inner groove configured to receive the flange prior to and during a cutting action to resist movement of the first jaw or the second jaw out of alignment during the cutting action, and the inner groove configured to receive the first blade.

2. The cutting head of claim 1 , wherein the flange is pivotably coupled to the first blade.

3. The cutting head of claim 1 , wherein the flange is spring-biased toward the retainer in an extended configuration.

4. The cutting head of claim 1 , wherein the retainer is mounted to the second blade at a fixed position.

5. The cutting head of claim 4 , wherein the first jaw and the second jaw rotate about the axis defined by the hollow pin causing the retainer to receive the flange such that the flange prevents the first blade and the second blade from shifting out of alignment during the cutting action.

6. The cutting head of claim 1 , wherein the second ear comprises the third ear bore for receiving a pivot pin positioned through the hollow pin.

7. The cutting head of claim 6 , further comprising:
a pivot pin that attaches the first jaw to the second jaw.

8. The cutting head of claim 1 , wherein the second blade is disposed within the inner groove.

9. The cutting head of claim 1 , wherein the flange includes first and second detent plungers.

10. A power tool comprising:
a cutting head comprising:
a hollow pin,
a first jaw disposed for rotation about an axis defined by the hollow pin, the first jaw comprising a first blade mounting surface having a first pair of screw bores configured to receive a first pair of blade mount screws and further comprising a first ear, wherein the first ear includes a first ear bore and a second ear bore for receiving the hollow pin and a slot for receiving a second ear;
a second jaw disposed for rotation about the axis defined by the hollow pin, the second jaw comprising a second blade mounting surface having a second pair of screw bores configured to receive a second pair of blade mount screws and further comprising the second ear having a third ear bore such that the third ear bore aligns in between the first ear bore and the second ear bore of the first ear when the second ear is coupled in the slot of the first ear;
a first blade mounted to the first blade mounting surface of the first jaw by the first pair of blade mount screws;
a second blade mounted to the second blade mounting surface of the second jaw by the second pair of blade mount screws;
a flange pivotably coupled to and extending from the first blade; and
a retainer coupled to the second blade, the retainer having an inner groove dimensioned to receive the flange and the first blade, the inner groove configured to receive the flange prior to and during a cutting action to resist movement of the first jaw or the second jaw out of alignment during the cutting action.

11. The power tool of claim 10 , wherein the flange is spring-biased toward the second blade in an extended configuration.

12. The power tool of claim 10 , wherein the retainer is mounted to the second blade at a fixed position.

13. The power tool of claim 12 , wherein the first jaw and the second jaw rotate about the axis defined by the hollow pin causing the retainer to receive the flange such that the flange prevents the first blade and the second blade from shifting out of alignment during the cutting action.

14. The power tool of claim 10 , wherein the second ear comprises the third ear bore for receiving a pivot pin positioned through the hollow pin.

15. The power tool of claim 14 , further comprising:
a pivot pin that attaches the first jaw to the second jaw.

16. The power tool of claim 10 , wherein the flange is moveable between an extended position and an open position,
wherein in the extended position, the flange extends into the retainer during a cutting action and in the open position, the flange does not extend into the retainer.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Olbrich Nathaniel P

Classifications

• B23D29/00 Primary

  Hand-held metal-shearing or metal-cutting devices (with nibbling action B23D27/02; hand-operated devices for metal-cutting otherwise than by shearing B26B) · CPC title

• B23D17/06

  actuated by fluid or gas pressure · CPC title

• B23D29/002

  for cutting wire or the like · CPC title

• B23D35/002 Primary

  Means for mounting the cutting members · CPC title

• B23D17/00

  Shearing machines or shearing devices cutting by blades pivoted on a single axis (on an axis parallel to the blade B23D15/10; hand-held devices B23D29/00) · CPC title