Hydraulic power tool

Patent metadata

Field	Value
Publication number	US-2025050479-A1
Application number	US-202418796510-A
Country	US
Kind code	A1
Filing date	Aug 7, 2024
Priority date	Aug 9, 2023
Publication date	Feb 13, 2025
Grant date	—

Abstract

A crimping head includes a clevis having a first arm and second arm defining a gap therebetween in which a workpiece is positioned and a nest. The crimping head further includes a first sleeve received within a first bore in the first arm and a second sleeve received within a second bore in the second arm. The first pin is received in the first sleeve for relative rotation therewith and the second pin is selectively received within the second sleeve. The hardness of the first and second sleeves is greater than the hardness of the clevis.

First claim

What is claimed is:

1 . A crimping head coupled to a hydraulic power unit, the crimping head comprising:
a clevis having a first arm and a second arm defining a gap therebetween in which a workpiece to be crimped is positioned, a nest having a first end pivotably coupled to the first arm with a first pin and an opposite, second end selectively coupled to the second arm with a second pin to rigidly affix the nest to the clevis, a first sleeve received within a first bore in the first arm, the first pin being received within the first sleeve for relative rotation therewith, and a second sleeve received within a second bore in the second arm, the second pin being selectively received within the second sleeve, wherein a hardness of the first and second sleeves is greater than a hardness of the clevis.

2 . The crimping head of claim 1 , wherein the first pin includes a first end and an opposite, second end, wherein the first pin includes a radially outward extending flange at the first end engaged with the first arm, wherein the first pin includes a circumferential groove at the second end in which a retaining clip is received, and wherein the flange and retaining clip, collectively, axially retain the first pin within the first bore.

3 . The crimping head of claim 1 further comprising a quick-release latch selectively locking the second pin within the second bore.

4 . The crimping head of claim 3 , wherein the quick-release latch is movable between a locked position, in which the second pin is axially retained within the second bore, and a release position, in which the second pin is removable from the second bore to permit the nest to pivot about the first pin away from the clevis.

5 . The crimping head of claim 4 , wherein the quick-release latch is pivotable between the locked position and the release position, and wherein the quick-release latch is biased towards the locked position.

6 . The crimping head of claim 4 further comprising a spring biasing the second pin out of the second bore to facilitate removal of the second pin from the second bore when the quick-release latch is in the release position.

7 . The crimping head of claim 1 , wherein each of the first and second sleeves is made from steel, and wherein the clevis is made from Aluminum.

8 . The crimping head of claim 7 , wherein each of the first and second pins is made from steel.

9 . A hydraulic power tool comprising:
a hydraulic power unit; and a crimping head coupled to the hydraulic power unit, the crimping head including
a clevis having a first arm and a second arm defining a gap therebetween in which a workpiece to be crimped is positioned,
a nest having a first end pivotably coupled to the first arm with a first pin and an opposite, second end selectively coupled to the second arm with a second pin to rigidly affix the nest to the clevis,
a first sleeve received within a first bore in the first arm, the first pin being received within the first sleeve for relative rotation therewith, and
a second sleeve received within a second bore in the second arm, the second pin being selectively received within the second sleeve,
wherein a hardness of the first and second sleeves is greater than a hardness of the clevis.

10 . The hydraulic power tool of claim 9 , wherein the first pin includes a first end and an opposite, second end, wherein the first pin includes a radially outward extending flange at the first end engaged with the first arm, wherein the first pin includes a circumferential groove at the second end in which a retaining clip is received, and wherein the flange and retaining clip, collectively, axially retain the first pin within the first bore.

11 . The hydraulic power tool of claim 9 , wherein the crimping head further comprises a quick-release latch selectively locking the second pin within the second bore.

12 . The hydraulic power tool of claim 11 , wherein the quick-release latch is movable between a locked position, in which the second pin is axially retained within the second bore, and a release position, in which the second pin is removable from the second bore to permit the nest to pivot about the first pin away from the clevis.

13 . The hydraulic power tool of claim 12 , wherein the quick-release latch is pivotable between the locked position and the release position, and wherein the quick-release latch is biased towards the locked position.

14 . The hydraulic power tool of claim 13 , wherein the crimping head further comprises a spring biasing the second pin out of the second bore to facilitate removal of the second pin from the second bore when the quick-release latch is in the release position.

15 . The hydraulic power tool of claim 9 , wherein each of the first and second sleeves is made from steel, and wherein the clevis is made from Aluminum.

16 . The hydraulic power tool of claim 15 , wherein each of the first and second pins is made from steel.

17 . The hydraulic power tool of claim 9 , wherein the first sleeve is removably coupled to the first bore and the second sleeve is removably coupled to the second bore.

18 . A hydraulic power tool comprising:
a hydraulic power unit; and a crimping head coupled to the hydraulic power unit, the crimping head including
a clevis having a first arm and a second arm defining a gap therebetween in which a workpiece to be crimped is positioned,
a nest having a first end pivotably coupled to the first arm with a first pin and an opposite, second end selectively coupled to the second arm with a second pin to rigidly affix the nest to the clevis,
a first sleeve received within a first bore in the first arm,
a second sleeve received within a second bore in the second arm,
a third sleeve received within the first bore opposite the first sleeve, and
a fourth sleeve received within the second bore opposite the second sleeve,
wherein the first pin is received within both the first sleeve and the third sleeve for relative rotation therewith,
wherein the second pin is slidably received within both the second sleeve and the fourth sleeve, and
wherein a hardness of the first, second, third, and fourth sleeves is greater than a hardness of the clevis.

19 . The hydraulic power tool of claim 18 , wherein the clevis is made from Aluminum, and wherein each of the first pin, second pin, first sleeve, second sleeve, third sleeve, and fourth sleeve is made from steel.

20 . The hydraulic power tool of claim 18 , wherein the crimping head further comprises a quick-release latch selectively locking the second pin within the second bore, wherein the first pin includes a first end and an opposite, second end, wherein the first pin includes a radially outward extending flange at the first end engaged with the first arm, wherein the first pin includes a circumferential groove at the second end in which a retaining clip is received, and wherein the flange and retaining clip, collectively, axially retain the first pin within the first bore.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Jensen Matthew

Classifications

• B21D39/046

  Connecting tubes to tube-like fittings · CPC title

• B21D39/048

  using presses for radially crimping tubular elements · CPC title

• B25B27/10

  inserting fittings into hoses · CPC title

• B25B27/026 Primary

  fluid driven · CPC title