Portable battery-powered reciprocating saw

Patent metadata

Field	Value
Publication number	US-9233427-B2
Application number	US-39983909-A
Country	US
Kind code	B2
Filing date	Mar 6, 2009
Priority date	Mar 7, 2008
Publication date	Jan 12, 2016
Grant date	Jan 12, 2016

Abstract

A power tool includes a housing having a handle configured for a user, the handle defining a first axis, a motor supported by the housing, the motor defining a second axis along a length of the motor, a tool element movably supported by the housing and drivingly coupled to the motor, the tool element defining a third axis along a length of the tool element. Each of the first, second, and third axes are oblique with respect to each of the other axes.

First claim

What is claimed is:

1. A reciprocating saw comprising:
a housing including a handle housing portion, a motor housing portion, and a gear case housing portion, the handle housing portion having a longitudinal axis that defines a first axis of the reciprocating saw;
a motor supported by the motor housing portion, the motor including an output shaft having a longitudinal axis that defines a second axis of the reciprocating saw;
a switch positioned on the handle housing portion, the switch configured to power the reciprocating saw;
a pinion gear coupled to the output shaft of the motor for rotation with the output shaft;
a driven gear engaged with the pinion gear such that the driven gear rotates in response to rotation of the pinion gear;
a spindle coupled to the driven gear such that rotation of the driven gear by the pinion gear reciprocates the spindle along a longitudinal axis of the spindle that defines a third axis of the reciprocating saw;
a blade clamp coupled to the spindle such that the blade clamp reciprocates with the spindle, the blade clamp configured to couple a saw blade to the spindle;
wherein the first axis, the second axis, and the third axis are oblique with respect to each of the other axes,
wherein the second axis and the third axis define a first angle, and
wherein the first angle is in a range of approximately 110 degrees to 130 degrees.

2. The reciprocating saw of claim 1 , wherein the first angle is approximately 120 degrees.

3. The reciprocating saw of claim 1 , wherein the first axis and the third axis define a second angle, and wherein the second angle is in a range of approximately 150 degrees to 170 degrees.

4. The reciprocating saw of claim 3 , wherein the second angle is approximately 161.7 degrees.

5. The reciprocating saw of claim 1 , wherein the first axis and the second axis define a third angle, and wherein the third angle is in a range of approximately 50 degrees to 70 degrees.

6. The reciprocating saw of claim 5 , wherein the third angle is approximately 60 degrees.

7. The reciprocating saw of claim 1 , further comprising a battery operable to power the motor, wherein the handle housing portion includes a cavity, and wherein the battery is received in the cavity along the first axis.

8. The reciprocating saw of claim 1 , wherein the driven gear rotates about an axis of rotation, the reciprocating saw further comprising a pin coupled to the driven gear for rotation with the driven gear about the axis of rotation, and a yoke coupled to the spindle and the yoke reciprocates with the spindle along the third axis, wherein the pin extends into the yoke such that rotation of the driven gear rotates the pin to reciprocate the yoke and the spindle along the third axis.

9. The reciprocating saw of claim 1 , wherein the driven gear rotates about an axis of rotation, wherein the longitudinal axis of the motor intersects the longitudinal axis of the spindle at the axis of rotation of the driven gear.

10. The reciprocating saw of claim 1 , wherein the driven gear is a bevel gear and the pinion gear is a bevel gear.

11. The reciprocating saw of claim 1 , further comprising, a gear case supported by the gear case housing portion, the gear case substantially enclosing the pinion gear and the driven gear, wherein the gear case is coupled to the housing and is electrically isolated from the housing.

12. The reciprocating saw of claim 11 , wherein the gear case housing portion includes a boss, wherein the gear case includes a tab having an aperture for receiving the boss, the reciprocating saw further comprising a fastener that extends through the boss to couple the gear case to the housing, wherein the boss electrically isolates the gear case from the housing.

13. The reciprocating saw of claim 11 , wherein the housing is formed from a first housing portion and a second housing portion, each housing portion including a boss, wherein the boss of the first housing portion aligns with the boss of the second housing portion, wherein the gear case includes a tab with an aperture, wherein the aperture of the tab receives at least one of the bosses, the reciprocating saw further comprising a fastener that extends through the bosses to couple the gear case to the housing, wherein the bosses electrically isolate the gear case from the fastener.

14. The reciprocating saw of claim 13 , wherein each boss at least partially extends into the aperture of the tab.

15. The reciprocating saw of claim 13 , wherein the boss of the first housing portion contacts the boss of the second housing portion.

16. The reciprocating saw of claim 1 , wherein the motor is positioned above the longitudinal axis of the spindle.

17. The reciprocating saw of claim 1 , wherein the pinion gear is positioned above the longitudinal axis of the spindle.

18. The reciprocating saw of claim 1 , further comprising a shoe for engaging a surface of a workpiece, wherein the shoe includes a non-planar front surface configured to engage the surface of the workpiece.

19. The reciprocating saw of claim 18 , wherein the non-planar front surface has a radius of curvature of approximately 170 mm measured with respect to a center plane of the spindle.

Assignees

• Alberti Daniel J
• Scott John S
• Steele Michael S
• Neitzell Roger D
• Naughton Michael
• Phillips Michael W
• Batterman Andrew
• Milwaukee Electric Tool Corp

Inventors

• Alberti Daniel J
• Scott John S
• Steele Michael S
• Neitzell Roger D
• Naughton Michael
• Phillips Michael W
• Batterman Andrew

Classifications

• B23D49/11

  for special purposes, e.g. offset-blade hand; {Hand saws having spaced blades; Hand saws for sawing grooves or square holes} · CPC title

• B23D49/162 Primary

  Pad sawing devices · CPC title

• B23D51/16

  of drives or feed mechanisms for straight tools, e.g. saw blades, or bows · CPC title

• B27B19/09

  portable · CPC title

• B25F5/02

  Construction of casings, bodies or handles {(B25F5/006, B25F5/008 take precedence)} · CPC title