# US 9,434,041 B2 · Mechanical hand tool device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,434,041 B2 - Document ID: US9434041B2 - Status: Granted - Kind: B2 - Application number: 13/877,132 - Filed: 2011-08-04 - Published: 2014-01-23 - Granted: 2016-09-06 - Earliest claimed: 2010-09-30 - Assignees: Robert Bosch GmbH - Applicants: Reiner Krapf; Heiko Sgarz; Ernie Fischer - Inventors: Reiner Krapf; Heiko Sgarz; Ernie Fischer - Web page: https://patentgrep.com/patent/US9434041B2 ## CPC - B23Q 17/2433: {Detection of presence or absence} - B25F 5/00: Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for - Y10T 83/04: Processes - Y10T 83/141: With means to monitor and control operation [e.g., self-regulating means] - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - B25F: COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR {(machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass B23P23/00 and subgroups)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract The disclosure relates to a mechanical hand tool device, in particular a fret and/or a reciprocating saw device, including a locating unit having at least one antenna. The locating unit is configured to detect objects outside a workpiece and to detect objects inside the workpiece. ## Claims ### Claim 1 A handheld machine tool apparatus comprising: a locating unit including at least one antenna, and the locating unit being configured (i) to detect objects outside a workpiece, and (ii) to detect objects inside the workpiece, wherein: a first antenna of the at least one antenna is configured to receive a signal in a first polarization, a second antenna of the at least one antenna, is configured to receive the signal in a second polarization, and the second polarization is different than the first polarization. ### Claim 2 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, further comprising: a workpiece guide apparatus including a workpiece support level, wherein the locating unit defines a locating space configured to penetrate the workpiece support level. ### Claim 3 (depends on 2) The handheld machine tool apparatus as claimed in claim 2, wherein the locating space of the locating unit has an extent greater than 1 cm perpendicular to the workpiece support level on a side of the workpiece support level facing the at least one antenna. ### Claim 4 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, further comprising: an insertion tool mount, wherein the at least one antenna is located behind the insertion tool mount relative to a main working direction. ### Claim 5 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, wherein the at least one antenna has a planar configuration. ### Claim 6 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, wherein the at least one antenna is fed in a balanced form. ### Claim 7 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, wherein the at least one antenna is configured to, at least one of, send on a narrowband basis and receive on a narrowband basis. ### Claim 8 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, wherein: the locating unit further includes at least one compensating apparatus, and the at least one compensating apparatus is configured, during operation, to at least partially compensate for crosstalk by an antenna signal from the first antenna on the second antenna. ### Claim 9 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, wherein the locating unit includes at least three antennas having different polarizations. ### Claim 10 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, further comprising: a computation unit, wherein the antennas of the at least one antenna have different direction regions, and wherein the computation unit is configured to ascertain at least one piece of information about a position of an object from position signals from the antennas of the at least one antenna and parameters of the direction regions. ### Claim 11 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, wherein the locating unit is configured to evaluate only one change in a received signal at least during machining of the workpiece. ### Claim 12 (depends on 1) The handheld machine tool apparatus as claimed in claim 1, wherein the locating unit defines two different reaction regions. ### Claim 13 A handheld machine tool comprising: a handheld tool apparatus including a locating unit having at least one antenna, the locating unit being configured (i) to detect objects outside a workpiece, and (ii) to detect objects inside the workpiece, wherein: a first antenna of the at least one antenna is configured to receive a signal in a first polarization, a second antenna of the at least one antenna, is configured to receive the signal in a second polarization, and the second polarization is different than the first polarization.