Pneumatic fastener driver

Patent metadata

Field	Value
Publication number	US-11110577-B2
Application number	US-201816193277-A
Country	US
Kind code	B2
Filing date	Nov 16, 2018
Priority date	Nov 16, 2017
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A fastener driver includes a housing having a handle portion. A motor is positioned within the housing. The fastener driver further includes an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder. The fastener driver further includes a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner. At least a portion of the drive train extends through the handle portion of the housing.

First claim

What is claimed is:

1. A fastener driver comprising:
a housing including a handle portion;
a motor positioned within the housing;
an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder; and
a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner,
wherein at least a portion of the drive train extends through the handle portion of the housing,
wherein the drive train includes a speed reduction mechanism that receives the torque from the motor,
wherein the speed reduction mechanism is a first speed reduction mechanism, and
wherein the drive train includes a second speed reduction mechanism separate from the first speed reduction mechanism such that the first speed reduction mechanism and the second speed reduction mechanism is configured as a split gearbox.

2. The fastener driver of claim 1 , wherein the drive train includes a drive shaft that extends at least partially through the handle portion.

3. The fastener driver of claim 2 , wherein the drive train includes a speed reduction mechanism upstream of the drive shaft.

4. The fastener driver of claim 1 , wherein the handle portion includes a first end and a second end, and wherein the drive train includes a first speed reduction mechanism positioned proximate the first end.

5. The fastener driver of claim 1 , wherein the drive train includes a crank arm assembly operatively coupled to the compressor piston.

6. The fastener driver of claim 1 , further comprising a battery pack, wherein the battery pack provides power to the motor.

7. A fastener driver comprising:
a housing including a handle portion;
a motor positioned within the housing;
an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder; and
a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner,
wherein at least a portion of the drive train extends through the handle portion of the housing,
wherein the drive train includes a drive shaft that extends at least partially through the handle portion, and
wherein the drive train includes a speed reduction mechanism downstream of the drive shaft.

8. The fastener driver of claim 7 , wherein the speed reduction mechanism is a gear train including a first gear, a second gear meshed with the first gear, and a third gear meshed with the second gear.

9. A fastener driver comprising:
a housing including a handle portion;
a motor positioned within the housing;
an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder; and
a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner,
wherein at least a portion of the drive train extends through the handle portion of the housing,
wherein the handle portion includes a first end and a second end, and wherein the drive train includes a first speed reduction mechanism positioned proximate the first end, and
wherein the drive train includes a second speed reduction mechanism positioned proximate the second end.

10. The fastener driver of claim 9 , wherein the housing includes a head portion adjacent the handle portion, the head portion supporting the air compressor, and wherein the second speed reduction mechanism is at least partially within the head portion.

11. A fastener driver comprising:
a housing including a head portion, a battery attachment portion, and a handle portion extending therebetween;
a motor positioned within the battery attachment portion;
a battery pack coupled to the battery attachment portion for providing power to the motor;
an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder; and
a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner,
wherein the drive train includes a drive shaft extending through the handle portion, and
wherein the drive train includes a speed reduction mechanism downstream of the drive shaft.

12. The fastener driver of claim 11 , wherein the drive train includes a speed reduction mechanism upstream of the drive shaft.

13. The fastener driver of claim 11 , wherein the handle portion includes a first end and a second end opposite the first end, and wherein a speed reduction mechanism is positioned proximate the first end.

14. The pneumatic fastener driver of claim 13 , wherein the drive shaft extends at least between the first and second ends.

15. A fastener driver comprising:
a housing including a head portion, a battery attachment portion, and a handle portion extending therebetween;
a motor positioned within the battery attachment portion;
a battery pack coupled to the battery attachment portion for providing power to the motor;
an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder; and
a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner,
wherein the drive train includes a drive shaft extending through the handle portion,
wherein the handle portion includes a first end and a second end opposite the first end, and wherein a speed reduction mechanism is positioned proximate the first end, and
wherein the drive train includes a second speed reduction mechanism positioned proximate the second end.

16. A fastener driver comprising:
a housing including a head portion, a battery attachment portion, and a handle portion extending therebetween;
a motor positioned within the battery attachment portion;
a battery pack coupled to the battery attachment portion for providing power to the motor;
an air compressor including a compressor cylinder and a compressor piston movable within the compressor cylinder in a reciprocating manner to compress air within the compressor cylinder; and
a drive train converting torque from the motor to a linear force applied to the compressor piston, causing the compressor piston to move in the reciprocating manner,
wherein the drive train includes a drive shaft extending through the handle portion, and
wherein the drive train includes a speed reduction mechanism positioned within the head portion.

17. The fastener driver of claim 16 , wherein the drive train includes a crank arm assembly positioned within the head portion, the crank arm assembly connected between the compressor piston and the speed reduction mechanism.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Weber Andrew J
• Wentzloff James M
• Albers Nicholas A
• Helm Bradley S
• Thorson Troy C

Classifications

• B25C1/06

  operated by electric power · CPC title

• B25C1/005

  for rows of contiguous nails · CPC title

• B25C1/042

  Main valve and main cylinder · CPC title

• B25C1/047 Primary

  Mechanical details · CPC title