Patents by Inventor Tomoro AOYAMA
Tomoro AOYAMA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 12138752Abstract: To improve operability it is desireable to decrease the size of an impact tool. The impact tool includes a motor, a spindle including a spindle shaft and a flange. An anvil of the tool includes an anvil shaft and an anvil projection. A hammer of the tool includes a base surrounding the spindle shaft, a front ring protruding frontward from an outer circumference of the base, and a hammer projection to strike the anvil projection in a rotation direction. The base has a groove at a boundary with the hammer projection. One of ordinary skill in the art would appreciate that the arrangement disclosed herein results in space savings that allows for overall decrease in the size of an impact too.Type: GrantFiled: April 26, 2023Date of Patent: November 12, 2024Assignee: MAKITA CORPORATIONInventors: Kazuma Aoki, Tomoro Aoyama
-
Patent number: 12138753Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. Center height Hc, which is the distance in the up-down direction between the rotational axis and an upper-end portion of the motor-housing part, is 29 mm or less.Type: GrantFiled: May 30, 2023Date of Patent: November 12, 2024Assignee: MAKITA CORPORATIONInventors: Kazuma Aoki, Tomoro Aoyama
-
Patent number: 12115625Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle, an anvil including an anvil shaft and an anvil projection, a hammer including a hammer projection to strike the anvil projection in a rotation direction, a hammer case accommodating the hammer, an anvil bearing held in the hammer case and surrounding the anvil shaft, and a cup washer facing a front surface of the anvil projection. The cup washer includes an inner ring portion in contact with a rear end face of the anvil bearing, an outer ring portion surrounding the anvil bearing, and a connecting ring portion connecting an outer edge of the inner ring portion and an inner edge of the outer ring portion.Type: GrantFiled: May 2, 2023Date of Patent: October 15, 2024Assignee: MAKITA CORPORATIONInventors: Kazuma Aoki, Tomoro Aoyama
-
Publication number: 20240058927Abstract: The inclination of a hammer with respect to a spindle is reduced. An impact tool includes a motor, a spindle at least partially located frontward from the motor and rotatable by the motor, a hammer surrounding the spindle, an anvil at least partially located frontward from the spindle and strikable by the hammer in a rotation direction, and three or more balls between the spindle and the hammer.Type: ApplicationFiled: July 10, 2023Publication date: February 22, 2024Applicant: MAKITA CORPORATIONInventors: Koji YAMANAKA, Koji TSUKAMOTO, Tomoro AOYAMA
-
Publication number: 20230398663Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle, an anvil including an anvil shaft and an anvil projection, a hammer including a hammer projection to strike the anvil projection in a rotation direction, a hammer case accommodating the hammer, an anvil bearing held in the hammer case and surrounding the anvil shaft, and a cup washer facing a front surface of the anvil projection. The cup washer includes an inner ring portion in contact with a rear end face of the anvil bearing, an outer ring portion surrounding the anvil bearing, and a connecting ring portion connecting an outer edge of the inner ring portion and an inner edge of the outer ring portion.Type: ApplicationFiled: May 2, 2023Publication date: December 14, 2023Applicant: MAKITA CORPORATIONInventors: Kazuma AOKI, Tomoro AOYAMA
-
Publication number: 20230398662Abstract: An impact tool has less size increase. An impact tool includes a motor, a spindle including a spindle shaft and a flange, an anvil including an anvil shaft and an anvil projection, and a hammer including a base surrounding the spindle shaft, a front ring protruding frontward from an outer circumference of the base, and a hammer projection to strike the anvil projection in a rotation direction. The base has a groove at a boundary with the hammer projection.Type: ApplicationFiled: April 26, 2023Publication date: December 14, 2023Applicant: MAKITA CORPORATIONInventors: Kazuma AOKI, Tomoro AOYAMA
-
Publication number: 20230398665Abstract: An impact tool (1) includes: a motor (6) having a rotor (27) that is rotatable about a rotational axis (AX); a spindle (8) disposed forward of the stator and rotating when the rotor rotates; an anvil (10) having at least a portion disposed forward of the spindle and mounting a bit (300); a hammer (47), which rotatably impacts the anvil; and a housing (2), which has a motor-housing part (21) that houses the motor. The maximum tightening torque is 140 N·m or more. Overall length (La), which is the distance—in the front-rear direction parallel to the rotational axis—between a rear-end portion of the motor-housing part and a front-end portion of the anvil, is 100 mm or less. Center height Hc, which is the distance in the up-down direction between the rotational axis and an upper-end portion of the motor-housing part, is 29 mm or less.Type: ApplicationFiled: May 30, 2023Publication date: December 14, 2023Inventors: Kazuma AOKI, Tomoro AOYAMA
-
Publication number: 20230191502Abstract: To reduce size increase, an impact tool includes a motor, a spindle located frontward from the motor, rotatable by the motor, and having a support hole extending rearward from a front end of the spindle, a hammer supported by the spindle, a ball between the spindle and the hammer, and an anvil received in the support hole and strikable by the hammer in a rotation direction. The anvil has a rear end located rearward from the ball.Type: ApplicationFiled: November 14, 2022Publication date: June 22, 2023Applicant: MAKITA CORPORATIONInventors: Tomoro AOYAMA, Takeshi KAMIYA
-
Publication number: 20230166387Abstract: An impact tool (1) includes: a motor (4); a spindle (6), which is disposed forward of the motor and is rotated by the motor; a hammer (33), which is supported by the spindle; an anvil (8), which is impacted in a rotational direction by the hammer; a motor housing (14), which houses the motor; a grip housing (15), which extends downward from the motor housing; and a battery-holding housing (16), which is disposed at a lower-end portion of the grip housing and holds a battery pack (43) having a rated voltage of 18 V. The distance (Da) between a rearward-most edge of the motor housing and a frontward-most edge of the anvil is 97 mm or less.Type: ApplicationFiled: November 1, 2022Publication date: June 1, 2023Inventors: Tomoro AOYAMA, Kazunori KINOSHITA