Low-profile impact tools

Patent metadata

Field	Value
Publication number	US-9833885-B2
Application number	US-201313832305-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Mar 15, 2013
Publication date	Dec 5, 2017
Grant date	Dec 5, 2017

Abstract

Illustrative embodiments of impact tools are disclosed. In at least one illustrative embodiment, an impact tool comprises a motor including an output shaft configured to rotate about a first axis and a drive train configured to be driven by the output shaft of the motor and to drive rotation of an output drive about a second axis that is non-parallel to the first axis, wherein the drive train includes an impact mechanism comprising a hammer configured to rotate about a third axis to periodically deliver an impact load to an anvil, the third axis being parallel to and spaced apart from the second axis.

First claim

The invention claimed is:

1. An impact tool comprising:
a motor including an output shaft configured to rotate about a first axis; and
a drive train driven by the output shaft of the motor and to drive rotation of an output drive about a second axis that is non-parallel to the first axis;
wherein the drive train includes an impact mechanism comprising a hammer that rotates about a third axis to periodically deliver an impact load to an anvil, the third axis being parallel to and spaced apart from the second axis;
wherein the hammer moves axially along the third axis to deliver the impact load to the anvil;
an idler gear that engages both the anvil and the output drive;
wherein the impact load on the anvil rotates the anvil and rotates the idler gear parallel with anvil;
wherein the idler gear rotates the output drive about the second axis parallel with idler gear; and
wherein no portion of the hammer or the anvil is located above or below the output drive along the second axis.

2. The impact tool of claim 1 , wherein the second axis and the third axis are perpendicular to the first axis.

3. The impact tool of claim 1 , wherein the output drive is formed to include an opening extending entirely through the output drive along the second axis.

4. The impact tool of claim 3 , wherein the output drive comprises an interchangeable hex insert.

5. The impact tool of claim 1 , wherein no portion of the drive train is positioned adjacent the output drive along the second axis.

6. The impact tool of claim 1 , wherein an outer surface of the anvil includes gear teeth that mesh with the idler gear.

7. The impact tool of claim 6 , wherein the output drive comprises an outer ring including gear teeth that mesh with the idler gear.

8. The impact tool of claim 7 , wherein the output drive further comprises an interchangeable hex insert engaged with the outer ring.

Assignees

• Ingersoll-Rand Company

Inventors

• Seith Warren Andrew
• Mcclung Mark T

Classifications

• B25B21/02 Primary

  with means for imparting impact to screwdriver blade or nut socket · CPC title

• B25B21/002

  for special purposes · CPC title

• B25B21/00

  Portable power-driven screw or nut setting or loosening tools; (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00; {for mounting or dismounting wheels B60B29/006}); Attachments for drilling apparatus serving the same purpose (machines B23P19/06) · CPC title

• B25F5/02

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

• B25B13/481

  for operating in areas having limited access · CPC title