US 12,377,479 B2 · Reciprocating saw

Abstract

A reciprocating saw includes a housing, a motor, and a drive mechanism. The motor includes an output gear rotatable about a motor axis. The drive mechanism includes a driven gear that engages the output gear and is rotated by the motor. The driven gear has a circumference and is vertically-oriented within the housing. The drive mechanism also includes an output shaft coupled to the driven gear and configured to reciprocate relative to the housing. The drive mechanism further includes a single counterweight fixed relative to the driven gear and rotating with the driven gear through a path and in a same direction. As the counterweight moves through a rearward half of the path, the counterweight generally moves in an upward direction, and as the counterweight moves through a forward half of the path, the counterweight generally moves in a downward direction.

Claims20

Dependent claims

A reciprocating saw comprising:

a housing including a rearward portion and a forward portion, the rearward portion having a handle;
a motor positioned within the housing, the motor including an output gear rotatable about a motor axis;
and
a drive mechanism positioned within the housing and coupled to the motor, the drive mechanism including:
a driven gear that engages the output gear and is rotated by the motor, the driven gear having a circumference and being vertically-oriented within the housing,
an output shaft driven by the motor to reciprocate relative to the housing, the output shaft configured to support a tool element adjacent the forward portion of the housing, and
a single counterweight fixed relative to the driven gear and rotating with the driven gear, the counterweight including a mass portion having a leading edge, a trailing edge, and a curved outer perimeter, the curved outer perimeter extending more than 90 degrees and less than 180 degrees between the leading and trailing edges.

4 more elements

A reciprocating saw comprising:

a housing including a rearward portion and a forward portion, the rearward portion having a handle that supports a trigger;
a motor positioned within the housing, the motor including an output gear rotatable about a motor axis;
and
a drive mechanism positioned within the housing and coupled to the motor, the drive mechanism including:
a driven gear that engages the output gear and is rotated by the motor, the driven gear having a circumference and being vertically-oriented within the housing,
an output shaft driven by the motor to reciprocate relative to the housing, the output shaft configured to support a tool element adjacent the forward portion of the housing, and
a counterweight coupled to the driven gear and rotating with the driven gear, the counterweight including a mass portion having a leading edge, a trailing edge, and a curved outer perimeter, the curved outer perimeter extending more than 90 degrees and less than 180 degrees between the leading and trailing edges;
wherein the trigger and the output shaft are located on a same side of the motor axis.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application

18/732,909Filed 4 Jun 2024 · continuation

Priority

23 Jul 2010

Published

US 2024/0326143 A13 Oct 2024

Granted

5 Aug 2025

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

B23D 51/161
Of drives or feed mechanisms for straight tools, e.g. saw blades, or bows: with dynamic balancing
B23D 49/10
Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws: hand-held or hand-operated sawing devices with straight saw…
B23D 49/162
Actuated by electric or magnetic power or prime movers: pad sawing devices
B23D 51/10
Of devices for mounting straight saw blades or other tools: for hand-held or hand-operated devices

Family

Application12/842,209Parent of this continuation-in-part · filed 23 Jul 2010

Application61/831,968Us provisional application · filed 6 Jun 2013

Application14/296,892Parent of this continuation · filed 5 Jun 2014

US 9,579,735 B2Parent of this continuation-in-part · filed 28 Feb 2017

Application15/723,815Parent of this continuation · filed 3 Oct 2017

US 9,776,263 B2Parent of this continuation · filed 3 Oct 2017

Application16/422,189Parent of this continuation · filed 24 May 2019

US 10,300,541 B2Parent of this continuation · filed 28 May 2019

Application17/131,996Parent of this continuation · filed 23 Dec 2020

US 10,875,110 B2Parent of this continuation · filed 29 Dec 2020

Application17/850,029Parent of this continuation · filed 27 Jun 2022

US 11,370,043 B2Parent of this continuation · filed 28 Jun 2022

Application18/123,728Parent of this continuation · filed 20 Mar 2023

US 11,607,738 B2Parent of this continuation · filed 21 Mar 2023

US 2024/0326143 A1Pre-grant publication · published 3 Oct 2024

US 12,017,289 B2Parent of this continuation

Application14/296,892Parent of this continuation-in-part

US 2011/0107608 A1Published application

US 2014/0283394 A1Published application

US 2018/0021868 A1Published application

US 2019/0275597 A1Published application

US 2021/0107076 A1Published application

US 2022/0324040 A1Published application

US 2023/0226628 A1Published application

US 12,377,479 B2This patent

From the US filing history. Foreign family members aren’t listed.

Reciprocating saw

Life of this patent

Reciprocating saw

Life of this patent

Abstract

Claims20