PEX expanding tool

Patent metadata

Field	Value
Publication number	US-9975289-B2
Application number	US-201715648893-A
Country	US
Kind code	B2
Filing date	Jul 13, 2017
Priority date	Jul 27, 2016
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A tool operable to expand an end of a pipe, such as PEX pipe, has a jaw assembly with jaws movable between a closed position and an expanded position and rotatable about a longitudinal axis. A motor drives an output spindle driven by the motor, which in turn drives a radial cam. A wedge is movable by the radial cam in a reciprocating motion along the axis, causing the wedge to move between a first position where the jaws are in the closed position and a second position where the jaws are in the expanded position. A rotating ring is mounted on the wedge and connected to the jaws. The rotating ring is driven by the output spindle for rotating the jaws about the axis.

First claim

What is claimed is:

1. A tool operable to expand an end of a pipe, the tool comprising:
a housing;
a jaw assembly disposed on the housing, the jaw assembly comprising a plurality of jaws rotatable about an axis and movable between a closed position where portions of the plurality of jaws are adjacent to the axis, and an expanded position where the portions are moved away from the axis;
a motor disposed in the housing;
an output spindle driven by the motor;
a radial cam connected to the output spindle;
a wedge movable by the radial cam in a reciprocating motion along the axis;
an index cam connected to the output spindle;
a shaft connected to the index cam;
a rotating ring mounted on the wedge;
a clutch ring mounted on the wedge and engaging the rotating ring; and
a gear ring driven by the shaft and slidably engaging the clutch ring;
wherein the wedge is movable between a first position where the plurality of jaws are in the closed position and a second position where the plurality of jaws are in the expanded position.

2. The tool of claim 1 , wherein the plurality of jaws is rotated when the shaft rotates.

3. The tool of claim 1 wherein the clutch ring cap momentarily disengage from the rotating ring.

4. The tool of claim 3 , wherein the clutch ring has teeth, and the rotating ring has teeth meshing with the teeth of the clutch ring.

5. The tool of claim 4 , wherein the teeth of the clutch ring can momentarily disengage from the teeth of the rotating ring.

6. The tool of claim 1 , further comprising a sleeve connected to the wedge and contacting the radial cam.

7. The tool of claim 1 , further comprising a power tool battery pack releasably connected to the housing and electrically connected to the motor.

8. A tool operable to expand an end of a pipe, the tool comprising:
a housing;
a jaw assembly disposed on the housing, the jaw assembly comprising a plurality of jaws rotatable about an axis and movable between a closed position where portions of the plurality of jaws are adjacent to the axis and an expanded position where the portions are moved away from the axis;
a motor disposed in the housing;
an output spindle driven by the motor;
a radial cam connected to the output spindle;
a wedge movable by the radial cam in a reciprocating motion along the axis, the wedge being movable between a first position where the plurality of jaws are in the closed position and a second position where the plurality of jaws are in the expanded position; and
a rotating ring mounted on the wedge and connected to the plurality of jaws, the rotating ring being operatively connected to and driven by the output spindle for rotating the plurality of jaws about the axis.

9. The tool of claim 8 , further comprising a shaft connected to the output spindle and driving the rotating ring.

10. The tool of claim 9 , wherein the shaft is connected to the output spindle by an index cam.

11. The tool of claim 9 , further comprising:
a clutch ring mounted on the wedge and engaging the rotating ring; and
a gear ring driven by the shaft and slidably engaging the clutch ring.

12. The tool of claim 11 wherein the clutch ring can momentarily disengage from the rotating ring.

13. The tool of claim 12 , wherein the clutch ring has teeth, and the rotating ring has teeth meshing with the teeth of the clutch ring.

14. The tool of claim 13 , wherein the teeth of the clutch ring can momentarily disengage from the teeth of the rotating ring.

15. The tool of claim 8 , further comprising a sleeve connected to the wedge, the sleeve contacting the radial cam.

16. The tool of claim 8 , further comprising a power tool battery pack releasably connected to the housing and electrically connected to the motor.

Assignees

• Black & Decker Inc

Inventors

• Li Qingyang
• Xu Yuelong
• Zheng Xiaomei
• Kunz Michael P

Classifications

• B29L2023/22

  Tubes or pipes, i.e. rigid (bent tubes not for use as pipe couplings B29L2023/004) · CPC title

• B29K2105/258

  Tubular · CPC title

• B29C57/045 Primary

  rotating · CPC title

• B29D23/001

  Pipes; Pipe joints (pleated hoses B29D23/18) · CPC title

• B21D41/028

  expandable mandrels · CPC title