Angle impact tool

Patent metadata

Field	Value
Publication number	US-10131037-B2
Application number	US-201414552536-A
Country	US
Kind code	B2
Filing date	Nov 25, 2014
Priority date	Feb 23, 2011
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

An angle impact tool includes a handle assembly extending along a first axis, a prime mover in the handle, an output shaft rotatable about the first axis, and a work attachment connected to the handle assembly. An output drive is supported in the work attachment for rotation about an output axis perpendicular to the first axis. A gear assembly including a spur gear is positioned within the work attachment to transfer torque from the prime mover about the first axis to the output drive about the output axis. An impact mechanism is positioned within the work attachment and includes a hammer and an anvil. The hammer rotates under the influence of the prime mover and is operable to periodically deliver an impact load to the anvil. The output drive rotates about the output axis under the influence of the impact load being transmitted to the output drive by the anvil.

First claim

The invention claimed is:

1. An angle impact tool comprising:
a handle housing having an outer handle housing height dimension defined by at least one outer surface of the handle housing;
a motor positioned in the handle housing, the motor having a motor shaft configured to rotate about a first axis;
a work attachment coupled to the handle housing, the work attachment having a first wall and a second wall positioned opposite the first wall, the first wall and the second wall cooperating to define a cavity in the work attachment, wherein the work attachment includes a head height dimension defined between a first outer surface of the first wall and a second outer surface of the second wall; and
an impact mechanism positioned in the cavity of the work attachment, the impact mechanism having a hammer and an anvil and being configured to rotate about a second axis that is non-parallel to the first axis;
wherein the head height dimension of the work attachment is smaller than the outer handle housing height dimension of the handle housing.

2. The angle impact tool of claim 1 , wherein: (i) the impact mechanism further includes an impact mechanism height dimension defining a height of the impact mechanism, and (ii) the impact mechanism is positioned in the cavity such that the head height dimension encompasses the impact mechanism height dimension.

3. The angle impact tool of claim 1 , wherein the second axis is perpendicular to the first axis.

4. The angle impact tool of claim 1 , wherein the head height dimension extends parallel to the second axis and the handle housing height dimension extends parallel to the second axis.

5. The angle impact tool of claim 1 , wherein the head height dimension extends orthogonal to the first axis and the handle housing height dimension extends orthogonal to the first axis.

6. The angle impact tool of claim 1 , wherein the head height dimension extends parallel to the handle housing height dimension.

7. The angle impact tool of claim 1 , further comprising an output shaft supported by the work attachment and extending through a passageway formed in the first wall, the output shaft being configured to rotate about the second axis.

8. The angle impact tool of claim 7 , wherein:
(i) the hammer of the impact mechanism is rotatably coupled to the motor shaft and the anvil is coupled to the output shaft, and
(ii) in response to rotation of the motor shaft about the first axis, the hammer rotates about the second axis and periodically strikes the anvil such that the anvil and the output shaft rotate about the second axis.

9. The angle impact tool of claim 1 , further comprising a gear assembly positioned between the impact mechanism and the motor, the gear assembly being rotationally coupled to the hammer and rotationally coupled to the motor shaft, the gear assembly configured to transmit the rotation of the motor shaft about the first axis to the hammer of the impact mechanism.

10. The angle impact tool of claim 1 , wherein the outer surface of the handle housing is shaped to be grasped by a user.

11. An angle impact tool comprising:
a motor including a motor shaft configured to rotate about a first axis, and a motor housing having at least one outer surface, and an outer motor housing height dimension defined by the at least one outer surface;
a work attachment coupled to the motor housing, the work attachment having a head height dimension extending between a first outer surface of the work attachment and a second outer surface of the work attachment positioned opposite the first outer surface; and
an impact mechanism positioned in the work attachment between the first outer surface and the second outer surface, the impact mechanism having a hammer and an anvil and being configured to rotate about a second axis that is non-parallel to the first axis;
wherein the head height dimension of the work attachment is smaller than the outer motor housing height dimension of the motor housing.

12. The angle impact tool of claim 11 , wherein the impact mechanism is positioned in the work attachment such that the head height dimension is larger than and encompasses an impact mechanism height dimension defined by the impact mechanism.

13. The angle impact tool of claim 11 , wherein: (i) the outer surface of the motor housing is cylindrical in shape and (ii) the outer motor housing height dimension is defined between two diametrically opposed points on the cylindrical outer surface.

14. The angle impact tool of claim 11 , further comprising an output shaft supported by the work attachment and extending through a passageway formed in the first outer surface, the output shaft being configured to rotate about the second axis.

Assignees

• Ingersoll Rand Co

Inventors

• Seith Warren Andrew
• Taylor Lucas James

Classifications

• B25B21/02 Primary

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

• B25B21/026 Primary

  Impact clutches · CPC title

• B25F5/02

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

• B25B21/023

  for imparting an axial impact, e.g. for self-tapping screws · CPC title