# US 7,411,144 B2 · Electric tool, particularly battery-operated electric tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,411,144 B2 - Document ID: US7411144B2 - Status: Granted - Kind: B2 - Application number: 11/621,668 - Filed: 2007-01-10 - Published: 2007-05-17 - Granted: 2008-08-12 - Earliest claimed: 2004-07-15 - Assignees: Marquardt GmbH - Inventors: Peter Broghammer - Web page: https://patentgrep.com/patent/US7411144B2 ## CPC - B25F 5/00: Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for - H01M 50/202: Casings or frames around the primary casing of a single cell or a single battery - H01M 50/247: specially adapted for portable devices, e.g. mobile phones, computers, hand tools or pacemakers - Y02E 60/10: Energy storage using batteries - 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)} - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract An electric tool is provided, including an electric tool housing, an electric motor located in the electric tool housing, and an energy store, particularly a battery, for supplying the electric motor with energy. An actuating member for actuating a switching means for supplying the electric motor with energy is arranged in and/or on the electric tool housing. The energy store has an energy store housing, which can be fastened in and/or to the electric tool housing. The switching means is located in the energy store housing, and a transmission means which interacts with both the actuating member and the switching means, is arranged in the electric tool housing such that the movement of the actuating member is transmitted to the switching means. ## Claims ### Claim 1 An electric tool comprising: an electric tool housing; an electric motor located in the electric tool housing; an energy store for supplying the electric motor with energy; an actuating member operatively connected to the electric tool housing for actuating a switching means for supplying the electric motor with energy; and an energy store housing removably attached to the electric tool housing; wherein the switching means is located in the energy store housing, and the actuating member, during movement, acts in at least one of a direct and an indirect manner on the switching means to actuate the switching means; said electric tool further comprising transmission means, that operatively interacts with both the actuating member and the switching means, arranged in the electric tool housing to transmit movement of the actuating member to the switching means, wherein the transmission means is a leaf spring arranged to extend in the electric tool housing such that a first end of the leaf spring is in operative connection with the actuating member and a second end of the leaf spring is brought into operative connection with the switching means via the actuating member. ### Claim 2 (depends on 1) The electric tool as claimed in claim 1, wherein the switching means comprises an electric switch. ### Claim 3 (depends on 1) The electric tool as claimed in claim 1, wherein the switching means comprises a sensor switch. ### Claim 4 (depends on 3) The electric tool as claimed in claim 3, wherein the sensor switch comprises one of a force sensor, a Hall sensor, and a magneto-resistive sensor. ### Claim 5 (depends on 1) The electric tool as claimed in claim 1, wherein the switching means is connected to electronics, arranged in the energy store housing, for controlling the energy supply such that the electric motor is operated with one of a speed assigned to motion displacement of the actuating member and a torque assigned to motion displacement of the actuating member. ### Claim 6 (depends on 5) The electric tool as claimed in claim 5, wherein the electronics are provided on a printed circuit board located in the energy store housing, and wherein the switching means comprises a sensor switch attached to the printed circuit board in an approximately perpendicularly projecting manner. ### Claim 7 (depends on 6) The electric tool as claimed in claim 6, wherein the switching means projects into a top part of the energy store housing. ### Claim 8 (depends on 5) The electric tool as claimed in claim 5, wherein the electronics control the energy supply in one of a pulse-width modulation manner, a leading-edge phase control manner and a trailing-edge phase control manner. ### Claim 9 (depends on 5) The electric tool as claimed in claim 5, wherein the electronics include electronics for charging the energy store. ### Claim 10 (depends on 1) The electric tool as claimed in claim 1, wherein the first end of the leaf spring is in operative connection with an actuating element located in the electric tool housing, wherein a pivot bearing is provided so that the leaf spring is pivoted via the actuating element about an axis of rotation on the pivot bearing serving as a fastening point, wherein, after pivoting, the second end of the leaf spring is brought into operative connection with a switching element via the actuating member, and wherein the switching element and the switching means are arranged side by side in the energy store housing. ### Claim 11 (depends on 1) The electric tool as claimed in claim 1, wherein an extension is located on the second end of the leaf spring, so that the leaf spring acts on the switching means via the extension. ### Claim 12 (depends on 11) The electric tool as claimed in claim 11, wherein the switching means comprises a sensor switch located in a top part of the energy store housing. ### Claim 13 (depends on 12) The electric tool as claim in claim 12, wherein the extension acts on the sensor switch via an elastic element arranged as a closure in an aperture on the top part of the energy store housing. ### Claim 14 (depends on 1) The electric tool as claimed in claim 1, wherein the energy store is a battery. ### Claim 15 (depends on 1) The electric tool as claimed in claim 1, wherein the transmission means is brought into an operative connection with both the actuating member and the switching means. ### Claim 16 (depends on 1) The electric tool as claimed in claim 1, wherein the transmission means is fastened approximately centrally to a bearing in the electric tool housing. ### Claim 17 An electric tool comprising: an electric tool housing; an electric motor located in the electric tool housing; an energy store for supplying the electric motor with energy; an actuating member operatively connected to the electric tool housing for actuating a sensor switch for supplying the electric motor with energy; and an energy store housing removably attached to the electric tool housing, wherein the sensor switch is located in the energy store housing, and the actuating member, during movement, acts in at least one of a direct and an indirect manner on the sensor switch to actuate the sensor switch. ### Claim 18 (depends on 17) The electric tool as claimed in claim 17, wherein the sensor switch comprises one of a force sensor, a Hall sensor, and a magneto-resistive sensor. ### Claim 19 (depends on 17) The electric tool as claimed in claim 17, further comprising a transmission means, that operatively interacts with both the actuating member and the sensor switch, arranged in the electric tool housing such that movement of the actuating member is transmitted to the sensor switch. ### Claim 20 (depends on 19) The electric tool as claimed in claim 19, wherein the transmission means is brought into an operative connection with both the actuating member and the sensor switch. ### Claim 21 (depends on 17) The electric tool as claimed in claim 17, wherein the sensor switch is connected to electronics, arranged in the energy store housing, for controlling the energy supply such that the electric motor is operated with one of a speed assigned to motion displacement of the actuating member and a torque assigned to motion displacement of the actuating member. ### Claim 22 (depends on 21) The electric tool as claimed in claim 21, wherein the electronics are provided on a printed circuit board located in the energy store housing, and wherein the sensor switch is attached to the printed circuit board in an approximately perpendicularly projecting manner. ### Claim 23 (depends on 22) The electric tool as claimed in claim 22, wherein the sensor switch projects into a top part of the energy store housing. ### Claim 24 (depends on 21) The electric tool as claimed in claim 21, wherein the electronics control the energy supply in one of a pulse-width modulation manner, a leading-edge phase control manner and a trailing-edge phase control manner. ### Claim 25 (depends on 21) The electric tool as claimed in claim 21, wherein the electronics include electronics for charging the energy store. ### Claim 26 (depends on 19) The electric tool as claimed in claim 19, wherein the transmission means is a leaf spring arranged to extend in the electric tool housing such that a first end of the leaf spring is in operative connection with the actuating member and a second end of the leaf spring is brought into operative connection with the sensor switch via the actuating member. ### Claim 27 (depends on 26) The electric tool as claimed in claim 26, wherein the first end of the leaf spring is in operative connection with an actuating element located in the electric tool housing, wherein a pivot bearing is provided so that the leaf spring is pivoted via the actuating element about an axis of rotation on the pivot bearing serving as a fastening point, wherein, after pivoting, the second end of the leaf spring is brought into operative connection with a switching element via the actuating member, and wherein the switching element and the sensor switch are arranged side by side in the energy store housing. ### Claim 28 (depends on 26) The electric tool as claimed in claim 26, wherein an extension is located on the second end of the leaf spring, so that the leaf spring acts on the sensor switch via the extension. ### Claim 29 (depends on 28) The electric tool as claimed in claim 28, wherein the sensor switch is located in a top part of the energy store housing. ### Claim 30 (depends on 29) The electric tool as claim in claim 29, wherein the extension acts on the sensor switch via an elastic element arranged as a closure in an aperture on the top part of the energy store housing. ### Claim 31 (depends on 26) The electric tool as claimed in claim 26, wherein the transmission means is fastened approximately centrally to a bearing in the electric tool housing. ### Claim 32 (depends on 17) The electric tool as claimed in claim 17, wherein the energy store is a battery.