Device system including a radio link

Patent metadata

Field	Value
Publication number	US-10131071-B2
Application number	US-201515509164-A
Country	US
Kind code	B2
Filing date	Sep 1, 2015
Priority date	Sep 8, 2014
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A device system, including a remote control (13) having a device housing (31) and a first radio unit (38), a tool device with a second radio unit and a radio link which connects the first radio unit (38) of the remote control (13) to the second radio unit of the tool device. The first radio unit is (38) is arranged on a front side (57) of the device housing (31), wherein the front side (57) is lying opposite a rear side (56) of the device housing (31) facing the operator in a working position of the remote control (13).

First claim

What is claimed is:

1. A device system comprising:
a remote control having a device housing, an input device situated in an upper side of the device housing, a control unit situated within the device housing and a first radio unit;
a tool device including a cutting tool, a drive motor driving the cutting tool, another control unit controlling the drive motor, and a second radio unit;
a radio link connecting the first radio unit of the remote control to the second radio unit of the tool device;
the first radio unit being situated on a front side of the device housing, the front side being situated opposite a back side of the device housing facing the operator in a working position of the remote control;
wherein the first radio unit includes a first radio module having a first radio antenna and a second radio module having a second radio antenna, polarization directions of the first and second radio antennas being situated perpendicularly to each other; wherein a distance between a first antenna base point of the first radio module and a second antenna base point of the second radio module corresponds to an odd multiple of a quarter wavelength of a radio frequency; wherein the radio link has a frequency band including multiple radio frequencies between a lower radio frequency (f min ) and an upper radio frequency (f max ); and wherein the distance between the first antenna base point of the first radio module and the second antenna base point of the second radio module is matched to a center frequency of the frequency band (f min , f max ).

2. The device system as recited in claim 1 wherein the first and second radio modules have an identical design.

3. The device system as recited in claim 1 wherein the first radio unit includes a third radio module having a third radio antenna, a polarization direction of the third radio antenna being situated perpendicularly to the polarization directions of the first and second radio antennas.

Assignees

• Hilti Ag

Inventors

• Kaneider Wilfried

Classifications

• B28D7/005 Primary

  Devices for the automatic drive or the program control of the machines · CPC title

• B25F5/00

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• B28D1/044

  the saw blade being movable on slide ways (B28D1/043 takes precedence) · CPC title

• B28D1/042

  the saw blade being carried by a pivoted lever (B28D1/043 and B28D1/044 take precedence) · CPC title

• B28D1/045

  Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut · CPC title