The present invention relates to guards for hand-held power tools, and more particularly to adjustable guards.
Power tools, such as hand-held angle grinders, include rotating abrasive tool elements that create debris during operation on a workpiece. A guard can shield a user of the power tool from such debris created during operation. However, guards may be non-adjustable, or difficult to adjust, and may block the user's view of the workpiece.
The invention provides, in another aspect, a power tool comprising an output shaft defining a rotational axis and a housing from which the output shaft protrudes. The power tool further includes a flange at least partially surrounding the output shaft, a circumferential groove defined between the housing and the flange, and a radially inward-extending slot in the flange. The power tool also includes a rotatable guard having a first radially inward-extending projection and a plurality of apertures positioned radially about the rotational axis. The first radially inward-extending projection is receivable through the radially inward-extending slot in the flange and positioned within the groove. Furthermore, the power tool includes a lever having a detent member, and a biasing member for biasing the lever toward the rotatable guard. The detent member is receivable in one of the plurality of apertures to rotationally lock the rotatable guard relative to the housing.
Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
With reference to
With continued reference to
Referring still to
With reference to
The latch plate 162 further includes a stop finger 204 that cooperates with a corresponding final stop projection 208 extending from an upper surface of the guard 146. The final stop projection 208 prevents over-rotation of the guard 146 regardless of whether the detent member 174 is received in one of the apertures 155. The final stop projection 208 abuts the stop finger 204 of the latch plate 162 to prevent more than a predetermined amount of rotation (e.g., 180 degrees) of the guard 146 relative to the gear housing 116 from occurring should, for example, the grinding disc 124 shatter during use of the tool 100. The gear case cover 120 includes a bulkhead 212, which provides additional reinforcement and strength to the gear case cover 120, having a bumper portion 216 for absorbing an impact between the final stop projection 208 and stop finger 204. In the illustrated embodiment, the bumper portion 216 is circumferentially adjacent the mounting tab 190 of the latch plate 162, such that any circumferential impact transferred to the latch plate 162 is absorbed by the bumper portion 216. The bumper portion 216 is positioned at least in part for preventing a complete rotation of the latch plate 162, as required by UL 60745-2-3, should the boss 194 and fastener 196 be sheared from an impact between the final stop projection 208 and the stop finger 204. In alternative embodiments, the particular features described above as formed on the gear case cover 120 (e.g., the bulkhead 212, the spring seat 186, the groove 134, etc.) may be formed on the gear case 118. In further alternative embodiments, the gear case cover 120 may be an integral component of the gear case 118. In further alternative embodiments, the gear case 118 may be integrally formed with the motor housing 114.
With reference to
Various features and advantages of the invention are set forth in the following claims.
This application claims priority to U.S. Provisional Patent Application No. 62/024,848 filed on Jul. 15, 2014, the entire contents of which are incorporated herein by reference.
Number | Name | Date | Kind |
---|---|---|---|
1911471 | Sacrey | May 1933 | A |
2104436 | Pattison et al. | Jan 1938 | A |
2377271 | Schumann | May 1945 | A |
2452268 | Schumann | Oct 1948 | A |
2546846 | Atkin | Mar 1951 | A |
2746220 | Thomas | May 1956 | A |
3413498 | Bowen, III et al. | Nov 1968 | A |
3464165 | Meredith | Sep 1969 | A |
3476960 | Rees | Nov 1969 | A |
3574975 | Liss | Apr 1971 | A |
3618994 | Gepfert et al. | Nov 1971 | A |
3742655 | Oliver | Jul 1973 | A |
3829722 | Rosenthal, Jr. et al. | Aug 1974 | A |
3907257 | Drzewiecki | Sep 1975 | A |
3940818 | Anderson | Mar 1976 | A |
4130770 | Wrobel | Dec 1978 | A |
4526024 | Toti | Jul 1985 | A |
4574532 | Häberle et al. | Mar 1986 | A |
4612734 | Nakajima et al. | Sep 1986 | A |
4810919 | Ponce et al. | Mar 1989 | A |
4920702 | Kloss et al. | May 1990 | A |
4924635 | Rudolf | May 1990 | A |
4962617 | Tilders et al. | Oct 1990 | A |
4976071 | Stäbler | Dec 1990 | A |
5005321 | Barth | Apr 1991 | A |
5020280 | O'Reilly | Jun 1991 | A |
5030028 | Riviera et al. | Jul 1991 | A |
5076030 | Schwab et al. | Dec 1991 | A |
5144175 | Craggs | Sep 1992 | A |
5157873 | Rudolf et al. | Oct 1992 | A |
5163252 | Garner et al. | Nov 1992 | A |
5311089 | Stroetgen et al. | May 1994 | A |
5315193 | Kummer et al. | May 1994 | A |
5319889 | Rudolf et al. | Jun 1994 | A |
5384985 | Jacobsson | Jan 1995 | A |
5386667 | Hausslein | Feb 1995 | A |
D368772 | Liao | Apr 1996 | S |
5558571 | Toyoshima et al. | Sep 1996 | A |
5601483 | Rudolf et al. | Feb 1997 | A |
5632578 | McCurry et al. | May 1997 | A |
5634274 | Ohkouchi et al. | Jun 1997 | A |
5637035 | Yee | Jun 1997 | A |
5766062 | Edling | Jun 1998 | A |
5947671 | Kanaan et al. | Sep 1999 | A |
6004194 | Hild et al. | Dec 1999 | A |
D421798 | Liang | Mar 2000 | S |
D423155 | Paynter et al. | Apr 2000 | S |
6048260 | Kopras | Apr 2000 | A |
RE36909 | Satos | Oct 2000 | E |
D433906 | Heun | Nov 2000 | S |
D456234 | Keller | Apr 2002 | S |
D456685 | Keller | May 2002 | S |
D458825 | Keller et al. | Jun 2002 | S |
6464573 | Keller | Oct 2002 | B1 |
6569001 | Rudolf et al. | May 2003 | B2 |
D483467 | Horng et al. | Dec 2003 | S |
6814655 | Hofmann | Nov 2004 | B2 |
6848985 | Lamprecht et al. | Feb 2005 | B2 |
6921236 | Rahberger | Jul 2005 | B2 |
6942560 | Hofmann | Sep 2005 | B2 |
6949017 | Koschel | Sep 2005 | B2 |
D511285 | Henssler | Nov 2005 | S |
D511824 | Chen et al. | Nov 2005 | S |
7059947 | Crover | Jun 2006 | B2 |
7077734 | Tiede | Jul 2006 | B2 |
7077736 | Uzumcu et al. | Jul 2006 | B2 |
7131897 | Crover | Nov 2006 | B2 |
7157818 | Jones | Jan 2007 | B2 |
7175513 | Folin | Feb 2007 | B2 |
7252581 | Numata et al. | Aug 2007 | B2 |
7258173 | Hammerstingl et al. | Aug 2007 | B2 |
D553933 | Esenwein | Oct 2007 | S |
7300262 | Ku et al. | Nov 2007 | B2 |
D558324 | Hong | Dec 2007 | S |
7332838 | Akiba | Feb 2008 | B2 |
D574077 | Horng et al. | Jul 2008 | S |
7510465 | Chung et al. | Mar 2009 | B2 |
7524239 | Schmidberger-Brinek et al. | Apr 2009 | B2 |
7567001 | Kasai et al. | Jul 2009 | B2 |
7719146 | Takahashi et al. | May 2010 | B2 |
7722444 | Gallagher et al. | May 2010 | B2 |
7732955 | Miller et al. | Jun 2010 | B2 |
7768750 | Uchida | Aug 2010 | B2 |
7786627 | Riedl | Aug 2010 | B2 |
7794305 | Nelson | Sep 2010 | B2 |
7892075 | Esenwein | Feb 2011 | B2 |
D633928 | Nilsson | Mar 2011 | S |
D634170 | Hu et al. | Mar 2011 | S |
D634833 | Stagg | Mar 2011 | S |
7909680 | Boeck et al. | Mar 2011 | B2 |
7927191 | Esenwein | Apr 2011 | B2 |
D637057 | Schomisch | May 2011 | S |
7955162 | Boeck et al. | Jun 2011 | B2 |
7988538 | Trautner et al. | Aug 2011 | B2 |
D644898 | Okuda | Sep 2011 | S |
D647772 | Hayakawa | Nov 2011 | S |
D651062 | Wack | Dec 2011 | S |
D651499 | Tong | Jan 2012 | S |
D651874 | Davidian | Jan 2012 | S |
D651875 | Davidian | Jan 2012 | S |
D651876 | Davidian | Jan 2012 | S |
D651877 | Davidian | Jan 2012 | S |
D651878 | Davidian | Jan 2012 | S |
D652274 | Davidian | Jan 2012 | S |
8087475 | Habel et al. | Jan 2012 | B2 |
8087977 | Gallagher et al. | Jan 2012 | B2 |
8096857 | Hofmann et al. | Jan 2012 | B2 |
8113922 | Esenwein | Feb 2012 | B2 |
8123596 | Kobayashi et al. | Feb 2012 | B2 |
D660119 | Fukumoto et al. | May 2012 | S |
8221197 | Boeck et al. | Jul 2012 | B2 |
8231436 | Boeck et al. | Jul 2012 | B2 |
8246425 | Schudel | Aug 2012 | B2 |
D669754 | Wackwitz | Oct 2012 | S |
8282446 | Sulea et al. | Oct 2012 | B2 |
8292700 | Gallagher et al. | Oct 2012 | B2 |
8425282 | Woods et al. | Apr 2013 | B2 |
8454411 | Boeck et al. | Jun 2013 | B2 |
8454412 | Esenwein | Jun 2013 | B2 |
D685240 | Waldron | Jul 2013 | S |
D685241 | Waldron | Jul 2013 | S |
D694076 | Davidian | Nov 2013 | S |
D694597 | Davidian | Dec 2013 | S |
D694598 | Davidian | Dec 2013 | S |
D694599 | Davidian | Dec 2013 | S |
D697384 | Wackwitz | Jan 2014 | S |
D707517 | Aglassinger | Jun 2014 | S |
D708031 | Aglassinger | Jul 2014 | S |
D709341 | Nispel | Jul 2014 | S |
D710170 | Aglassinger | Aug 2014 | S |
D710171 | Aglassinger | Aug 2014 | S |
D715616 | Aglassinger | Oct 2014 | S |
D724923 | McRoberts | Mar 2015 | S |
D735568 | Barnett | Aug 2015 | S |
D746118 | Xu | Dec 2015 | S |
20040138668 | Fisher | Jul 2004 | A1 |
20050282474 | Jones | Dec 2005 | A1 |
20080153404 | Schmidberger-Brinek | Jun 2008 | A1 |
20090179507 | Tanimoto | Jul 2009 | A1 |
20090293696 | Rauscher et al. | Dec 2009 | A1 |
20100026107 | Hosokawa | Feb 2010 | A1 |
20100056029 | Grunikiewicz | Mar 2010 | A1 |
20100102654 | Lange et al. | Apr 2010 | A1 |
20100105300 | Esenwein | Apr 2010 | A1 |
20100123359 | Nishikawa | May 2010 | A1 |
20100132968 | Hartmann | Jun 2010 | A1 |
20100178857 | Esenwein | Jul 2010 | A1 |
20100304648 | Boeck et al. | Dec 2010 | A1 |
20110001368 | Lau | Jan 2011 | A1 |
20110025142 | Bernhardt et al. | Feb 2011 | A1 |
20110171887 | Tanimoto et al. | Jul 2011 | A1 |
20110195643 | Dai | Aug 2011 | A1 |
20110241457 | Müller et al. | Oct 2011 | A1 |
20110281507 | Trautner et al. | Nov 2011 | A1 |
20120080963 | Yoshikawa | Apr 2012 | A1 |
20120184191 | Schulze | Jul 2012 | A1 |
20120231710 | Boeck et al. | Sep 2012 | A1 |
20120270480 | Rohde | Oct 2012 | A1 |
20130090045 | Meyer | Apr 2013 | A1 |
Number | Date | Country |
---|---|---|
236537 | Sep 1987 | EP |
2003246208 | Sep 2003 | JP |
Entry |
---|
Radnor Brand Grinder Instruction Manual, <http://airgas.com/documents/pdf/SpecSheet/N-R/RAD—Radnor/instruct-man%20radnorneutrix.pdf> 2010, 12 pages. |
Number | Date | Country | |
---|---|---|---|
20160016285 A1 | Jan 2016 | US |
Number | Date | Country | |
---|---|---|---|
62024848 | Jul 2014 | US |