US 2018/0001455 A1 · RETURN MECHANISM FOR A CORDLESS NAILER

Abstract

A driver return assembly can be positioned to return a concrete nail driver of a cordless electric powered nailer to the home position. A return rack can be fixedly coupled to and positioned along a longitudinal length of the concrete nail driver The driver return assembly can include a solenoid driving a plunger in a reciprocating motion in a homeward direction and a driven direction. A return pawl can be coupled to the plunger and pivotable into a pawl raised position relative to the plunger in which the pawl is engageable with the return rack during movement of the plunger in the homeward direction, and pivotable into a pawl lowered position relative to the plunger in which the pawl is not engageable with the return rack during movement of the plunger in the driven direction.

Claims29

Dependent claims

A cordless electric nailer comprising:

a power take-off assembly positioned and operable to selectively engage a pinch roller against a nail driver having a home position to pinch the nail driver against a battery-powered electric motor driven flywheel and fire the nail driver;
a return rack fixedly coupled to and positioned along a longitudinal length of the nail driver;
and
a driver return assembly positioned to engage and return the nail driver to the home position, the driver return assembly including:
a return motor operably coupled to a return pawl to alternating drive the return pawl in a homeward direction while the return pawl is in a raised position relative to the nail driver in which the return pawl is engageable with the return rack, and in a driven direction while the return pawl is in a lowered position relative to the nail driver in which the return pawl is not engageable with the return rack.

2 more elements

A cordless electric concrete nailer comprising:

a power take-off assembly positioned and operable to selectively engage a pinch roller against a concrete nail driver having a home position to pinch the concrete nail driver against a battery-powered electric motor driven flywheel and fire the concrete nail driver;
a return rack fixedly coupled to and positioned along a longitudinal length of the concrete nail driver;
and
a driver return assembly positioned to return the concrete nail driver to the home position, the driver return assembly including:
a solenoid driving a plunger in a reciprocating motion in a homeward direction and a driven direction;
a return pawl coupled to the plunger and pivotable into a pawl raised position relative to the plunger in which the pawl is engageable with the return rack during movement of the plunger in the homeward direction, and pivotable into a pawl lowered position relative to the plunger in which the pawl is not engageable with the return rack during movement of the plunger in the driven direction.

3 more elements

Dependencies are inferred from the claim text.

Return mechanism for a cordless nailer

Life of this patent

Return mechanism for a cordless nailer

Life of this patent

Abstract

Claims29