# US 11,897,109 B2 · Striking tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,897,109 B2 - Document ID: US11897109B2 - Status: Granted - Kind: B2 - Application number: 17/575,776 - Filed: 2022-01-14 - Published: 2022-08-11 - Granted: 2024-02-13 - Earliest claimed: 2021-02-10 - Assignees: Makita Corporation - Applicants: Makita Corporation - Inventors: Kiyonobu Yoshikane; Mizuki Yamamoto - Web page: https://patentgrep.com/patent/US11897109B2 ## CPC - B25D 17/043: {Handles resiliently mounted relative to the hammer housing (B25D17/046 takes precedence)} - B25D 2211/068: Crank-actuated impulse-driving mechanisms - B25D 2222/57: Elastomers, e.g. rubber - B25D 2250/245: Spatial arrangement of components of the tool relative to each other - B25D 2250/345: Use of o-rings - B25D 2250/371: Use of springs - B25D: PERCUSSIVE TOOLS {(percussive machines for forging B21J; hand-held drilling machines, in general B23B45/00, for wood B27C3/08; drilling machines, used for mining or quarrying, with reciprocating tool which is turned intermittently when out of contact with the working face E21B1/00)} ## Abstract An objective is to provide a technique to securely protect the striking tool even when the striking tool inadvertently falls down. A striking tool including a rotating shaft relatively rotatably connect a main body with a handle, a first elastic member reducing transmitting of vibration from the main body to the handle in a case that the handle relatively rotates to the main body, wherein the handle includes a battery mounting portion to which battery to drive the motor is attachable and the handle is arranged to relatively move to the main body across the rotating shaft, and an adjuster such that the relative movement amount of the handle to the main body in a predetermined direction is adjusted to be larger than the relative movement amount in a direction other than the predetermined direction. ## Claims ### Claim 1 A striking tool comprising: a main body having a motor and a mechanism part driven by the motor to make an end tool operate striking movement, a handle to be held by a user of the striking tool, a rotating shaft relatively rotatably connect the main body with the handle, a first elastic member disposed between the main body and the handle, wherein the first elastic member reduces transmitting of vibration from the main body to the handle in a case that the handle relatively rotates around the rotating shaft, wherein the handle includes a battery mounting portion to which battery to drive the motor is attachable and the handle is arranged to relatively move to the main body across the rotating shaft, and an adjuster to adjust the relative movement amount of the handle to the main body such that the relative movement amount of the handle to the main body in a predetermined direction is larger than the relative movement amount of the handle to the main body in a direction other than the predetermined direction. ### Claim 2 (depends on 1) The striking tool according to claim 1, wherein a second elastic member is disposed around the rotating shaft between the main body and the handle. ### Claim 3 (depends on 1) The striking tool according to claim 1, wherein the adjuster is disposed in a region remote from the rotating shaft. ### Claim 4 (depends on 1) The striking tool according to claim 1, wherein the adjuster includes an elongated opening and a projecting portion inserted to the elongated opening, wherein the longitudinal direction of the elongated opening generally coincides with the predetermined direction. ### Claim 5 (depends on 1) The striking tool according to claim 1, further comprising a battery mounted to the battery mounting portion, wherein the predetermined direction is an impact force exerting direction defined as a direction in which falling impact heads toward the main body via the battery in a case that the striking tool falls down. ### Claim 6 (depends on 5) The striking tool according to claim 5 wherein the impact force exerting direction is defined as a direction to head towards the gravity center of the main body from the battery. ### Claim 7 (depends on 5) The striking tool according to claim 5, further comprising a working operation accessory integrally mounted to the main body, wherein the impact force exerting direction is defined as a direction to head towards the gravity center of the main body integrally with the working operation accessory. ### Claim 8 (depends on 5) The striking tool according to claim 5, wherein the main body includes a third elastic member disposed between the main body and the battery. ### Claim 9 (depends on 8) The striking tool according to claim 8, wherein the third elastic member is normally non-contact with the battery. ### Claim 10 (depends on 5) The striking tool according to claim 5, wherein the rotating shaft is disposed at the front side of the battery at the main body. ### Claim 11 (depends on 1) The striking tool according to claim 1, wherein the first elastic member is defined by a coil spring. ### Claim 12 (depends on 1) The striking tool according to claim 1, wherein a second elastic member is disposed around the rotating shaft between the main body and the handle and the adjuster is disposed in a region remote from the rotating shaft. ### Claim 13 (depends on 1) The striking tool according to claim 1, wherein the adjuster is disposed in a region remote from the rotating shaft and the adjuster includes an elongated opening and a projecting portion inserted to the elongated opening, wherein the longitudinal direction of the elongated opening generally coincides with the predetermined direction. ### Claim 14 (depends on 1) The striking tool according to claim 1, wherein a second elastic member is disposed around the rotating shaft between the main body and the handle, wherein the adjuster is disposed in a region remote from the rotating shaft and the adjuster includes an elongated opening and a projecting portion inserted to the elongated opening, wherein the longitudinal direction of the elongated opening generally coincides with the predetermined direction. ### Claim 15 (depends on 1) The striking tool according to claim 1, wherein the adjuster includes an elongated opening and a projecting portion inserted to the elongated opening, wherein the longitudinal direction of the elongated opening generally coincides with the predetermined direction, the striking tool further comprising a battery mounted to the battery mounting portion, wherein the predetermined direction is an impact force exerting direction defined as a direction in which falling impact heads toward the main body via the battery in a case that the striking tool falls down. ### Claim 16 (depends on 1) The striking tool according to claim 1, wherein the adjuster includes an elongated opening and a projecting portion inserted to the elongated opening, wherein the longitudinal direction of the elongated opening generally coincides with the predetermined direction, the striking tool further comprising a battery mounted to the battery mounting portion, wherein the predetermined direction is an impact force exerting direction defined as a direction in which falling impact heads toward the main body via the battery in a case that the striking tool falls down and the impact force exerting direction is defined as a direction to head towards the gravity center of the main body from the battery. ### Claim 17 (depends on 1) The striking tool according to claim 1, wherein the adjuster includes an elongated opening and a projecting portion inserted to the elongated opening, wherein the longitudinal direction of the elongated opening generally coincides with the predetermined direction, the striking tool further comprising a battery mounted to the battery mounting portion, wherein the predetermined direction is an impact force exerting direction defined as a direction in which falling impact heads toward the main body via the battery in a case that the striking tool falls down, the impact force exerting direction is defined as a direction to head towards the gravity center of the main body from the battery and the main body includes a third elastic member disposed between the main body and the battery.