US 12,611,754 B2Granted

Crimping and/or pinching accessory for power tool

AssigneeBlack & Decker Inc.

InventorThomas R. Kaye, Jr.

Life of this patent

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Abstract

A crimping accessory and/or a pinching accessory for a power-driven tool is provided. The crimping accessory and/or the pinching accessory can include first and second jaws that are rotatably coupled relative to a guide assembly and an actuating mechanism coupled in the guide assembly. The actuating mechanism includes a trunnion mounted on a rod. First and second cam followers exert a force on first cam surfaces of the first and second jaws as the trunnion moves in a first longitudinal direction, to bring the jaws together in a crimping and/or pinching area of the accessory and exert a crimping and/or pinching force on a workpiece. Movement of a pair of first pins and a pair of second pins along second cam surfaces of the first and second jaws guides an opening movement of the first and second jaws to release the force exerted on the workpiece.

Claims22

Dependent claims

An accessory for a rotary power tool, comprising:

a rod extending along a longitudinal axis, the rod having an end portion configured to be coupled to the rotary power tool, wherein the rod is configured to rotate about the longitudinal axis in response to operation of the rotary power tool;
a first jaw having a first working portion and coupled to a first guide portion including a first cam surface;
a second jaw having a second working portion facing the first working portion and coupled to a second guide portion, the first jaw being pivotable relative to the second jaw about a fulcrum oriented transverse to the longitudinal axis, between a fully open position and a fully closed position;
a trunnion operatively coupled to the rod and configured to move in a first axial direction along the rod in response to rotation of the rod in a first direction, and to move in a second axial direction along the rod, opposite the first axial direction, in response to rotation of the rod in a second direction;
and
a first cam follower coupled to the trunnion and configured to engage the first cam surface to cause the first jaw to pivot relative to the second jaw,
wherein the first cam surface includes a first section, a second section, and a third section, and
wherein, in response to rotation of the rod in the first direction, the first cam follower is configured to sequentially engage the first, second, and third sections of the first cam surface such that
the first cam follower engages the first section of the first cam surface to cause the first working portion of the first jaw to pivot toward the second working portion of the second jaw from the fully open position toward the fully closed position of the first and second jaws,
the first cam follower engages the second section of the first cam surface to cause the first working portion of the first jaw to pivot toward the second working portion of the second jaw to the fully closed position of the first and second jaws to crimp or clamp a workpiece positioned between the first and second jaws, and
the first cam follower engages the third section of the first cam surface to cause the first working portion of the first jaw to pivot away from the second working portion of the second jaw from the fully closed position to a partially open position of the first and second jaws.

8 more elements

An accessory for a rotary power tool, comprising:

a rod positioned between a first guide plate and a second guide plate, the rod having an end portion configured to be coupled to the rotary power tool, wherein the rod is configured to rotate about a longitudinal axis in response to operation of the power tool;
a first jaw and a second jaw coupled between the first guide plate and the second guide plate, wherein at least one of the first jaw or the second jaw is rotatable relative to the other of the first jaw or the second jaw between a fully open position and a fully closed position of the first jaw and the second jaw to crimp or clamp a workpiece positioned between the first and second jaws;
a trunnion positioned between a first guide plate and a second guide plate, wherein the rod extends through a threaded portion of the trunnion to operatively couple the trunnion on the rod, wherein the trunnion is configured to move axially along the rod in response to rotation of the rod;
at least one cam follower coupled to the trunnion and configured to engage a cam surface coupled to at least one of the first jaw or the second jaw, wherein
in response to rotation of the rod in a first direction,
the threaded portion of the trunnion is engaged with a threaded portion of the rod to move the trunnion in a first axial direction along the rod, the at least one cam follower moves from a first portion to a second portion of the cam surface in response to movement of the trunnion in the first axial direction, and the at least one of the first jaw or the second jaw rotates relative to the other of the first jaw or the second jaw in response to the movement of the at least one cam follower along the cam surface, to move from the fully open position to the fully closed position of the first and second jaws;
and
in response to continued rotation of the rod in the first direction and continued movement of the trunnion in the first axial direction, the threaded portion of the trunnion is disengaged from the threaded portion of the rod and moved onto an unthreaded portion of the rod, the at least one cam follower moves from the second portion to a third portion of the cam surface in response to the continued movement of the trunnion in the first axial direction and the movement of the trunnion onto the unthreaded portion of the rod, and the at least one of the first jaw or the second jaw rotates relative to the other of the first jaw or the second jaw to move from the fully closed position to a partially open position of the first jaw and the second jaw.

5 more elements

An accessory for a rotary power tool, comprising:

a rod between a first guide plate and a second guide plate, the rod having an end portion configured to be coupled to the rotary power tool, wherein the rod is configured to rotate about a longitudinal axis in response to operation of the power tool;
a first jaw coupled between the first guide plate and the second guide plate;
a second jaw rotatably coupled between the first guide plate and the second guide plate, wherein the first jaw is rotatable relative to the second jaw between a fully open position and a fully closed position of the first jaw and the second jaw to crimp or clamp a workpiece positioned between the first and second jaws;
a trunnion positioned on the rod, the trunnion including:
a threaded opening formed in an intermediate portion of the trunnion, wherein the rod extends through the threaded opening such that the trunnion is configured to move axially along the rod in response to rotation of the rod;
a mounting pin extending between a first side portion and a second side portion of the trunnion;
and
a cam follower mounted on the mounting pin, wherein the cam follower is configured to engage a first cam surface coupled the first jaw,
wherein a position of the mounting pin in the trunnion is adjustable so as to adjust a position of the cam follower and a corresponding separation distance between a working portion of the first jaw and a working portion of the second jaw;
in response to rotation of the rod in a first direction,
the threaded portion of the trunnion is engaged with a threaded portion of the rod to move the trunnion in a first axial direction along the rod,
the cam follower moves along the cam surface of the second jaw in response to movement of the trunnion in the first axial direction, and
the second jaw rotates relative to first jaw in response to the movement of the first cam follower along the first cam surface.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/332,213Filed 9 Jun 2023 · us provisional application
Priority: 29 Jul 2022
Published: US 2024/0033890 A11 Feb 2024
Granted: 28 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B25B 27/10
For connecting objects by press fit or detaching same: inserting fittings into hoses
B25B 27/146
For assembling objects other than by press fit or detaching same: clip clamping hand tools
B25F 3/00
Associations of tools for different working operations with one portable power-drive means
B23B 2231/06
Details of chucks, toolholder shanks or tool shanks: chucks for handtools having means for opening and closing the jaws using the driving motor of…