US 11,850,719 B2
Guard and adaptor for power tools
Christopher R. Crowell, Des Plaines, IL (US); Eric J. Acevedo, Chicago, IL (US); Jeremy D. Rubens, Palantine, IL (US); and Alan B. Lebowitz, Chicago, IL (US)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Filed by Robert Bosch GmbH, Stuttgart (DE)
Filed on Jun. 20, 2019, as Appl. No. 16/447,202.
Claims priority of provisional application 62/687,596, filed on Jun. 20, 2018.
Prior Publication US 2019/0389046 A1, Dec. 26, 2019
Int. Cl. B25F 3/00 (2006.01); B25F 5/02 (2006.01); B24B 23/02 (2006.01); B23Q 11/00 (2006.01)
CPC B25F 3/00 (2013.01) [B24B 23/028 (2013.01); B25F 5/02 (2013.01); B23Q 11/0046 (2013.01); B23Q 11/0071 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A portable power tool system comprising:
a portable power tool with a housing including a nose portion and a gripping portion, the nose portion defining an opening;
a motor enclosed within the housing, the motor including an output shaft, the output shaft extending through the opening defined by the nose portion of the housing;
an accessory tool holder secured to an end portion of the output shaft located exterior to the nose portion of the housing, the accessory tool holder configured to couple with at least one accessory tool with a first type of shank; and
an attachment configured to be attached and removed from the nose portion of the housing as desired by an operator of the power tool, the attachment including a first housing interface that is configured to interact with an attachment interface of the nose portion to position the attachment at a first predetermined position on the nose portion of the housing whereat the attachment extends away from the nose portion in a direction along an axis of the output shaft,
wherein the attachment interface and the first housing interface are configured to be magnetically attracted to each other with sufficient force to retain the attachment on the nose portion of the housing during normal operating conditions while allowing the attachment to be removed from the nose portion of the housing by hand by the operator.