Max Co., Ltd.

Takashi Nakazato

Morio Yamaguchi

Mitsuhiro Takatsuru

Takumi Harigaya

Shigeyuki Umino

Chikamitsu Sawada

Masaru Sekita

Yasunori Kudoh

A sound reduction apparatus for a pneumatic type nailing machine in which a driving piston is driven by compressed air to drive a nail and the compressed air is exhausted from an exhaust port after driving is provided. The sound reduction apparatus includes a sound reduction chamber configured for receiving the compressed air from the exhaust port and exhausting the air after driving. The sound reduction chamber includes a wall defining a plurality of exhaust slits extending circumferentially about the sound reduction chamber. The exhaust slits are constructed and arranged to exhaust the compressed air from the sound reduction chamber in a substantially laminar flow thereby reducing an intensity of exhaust sound.

Sound reduction apparatus for pneumatic type nailing machine

A tape printing apparatus has a main body, a print device mounted on the main body, and a tape wound body being rotatably supported on the main body. The tape wound body has an annular core member, and a print tape wound on the annular core member. The print tape includes a tape base material including a print surface, and an adhesive layer being exposed to a surface opposite to the print surface of said tape base material. The print device prints data on the print surface of the print tape wound on the tape wound body. The print device contacts an outermost print surface of the print tape. The main body includes a bias device for urging the tape wound body toward the print device, a tape feeder for rotating the tape wound body in contact with an outer circumferential surface of the tape wound body, and a tape separator for separating the print tape by peeling off the print tape in a wound state.

Tape printing apparatus

A driver bit holding sleeve 6 is disposed in a shooting portion 4 so as to enable it to be rotated together with a driver bit 5 struck by a striking piston 2 while permitting the driver bit 5 to be slidably displaced in the shooting portion 4, and a piston-cylinder mechanism 10 for rotationally driving the holding sleeve 6 is arranged in the vicinity of the shooting portion 4. The piston-cylinder mechanism 10 is operatively associated with the holding sleeve 6 via a converting mechanism 17 for converting reciprocable linear movement of the piston-cylinder mechanism 10 into rotary movement of the holding sleeve 6. Since a striking sleeve 7 is threadably squeezed in a material to be handled after it is struck by a driver bit 5, any type of striking screw 7 having a circular head portion can easily and reliably be struck in the material.

Tool for handling a striking screw

A very small displacement enlargement mechanism is disclosed, in which a first stationary frame and a second movable frame are disposed on the opposite sides of a piezoelectric element for producing a strain in a longitudinal direction according to an applied voltage. A movable member consisting of a plurality of elements linked together into a substantially parallelogrammic form is disposed between the two frames such as to surround the piezoelectric element. An element of the movable member or the side of the first frame is united integrally to the first frame, and another element which is on the side of the second frame and faces the first-mentioned element is united integrally to the second frame. The strain of the piezoelectric element produces a relative displacement of the two frames via the movable member, and the relative displacement is transmitted as an enlarged output to a drive wire. A printing head has a plurality of radially spaced-apart mounting grooves, and a printing unit having the above construction is mounted in each of the mounting grooves.

Very small displacement enlargement mechanism and printing head using

This striking tool of an internal combustion type includes in a housing of a tool body a cylinder providing slidably a piston connecting to a driver. A combustion chamber is disposed around the side wall of the cylinder. A fluid controlled valve is disposed between the combustion chamber disposed around the side wall of the cylinder. A fluid controlled valve is disposed between the combustion chamber and a piston upper chamber of the cylinder, which is normally biased to close communication between the combustion chamber and the piston upper chamber and operated to open communication therebetween when mixture gas of combustible gas and air in the combustion chamber is exploded therein. When a trigger, disposed on the external of the tool body and driveable outwardly, is driven, said mixture gas at first enters and fills up the combustion chamber and then is ignited therein by igniting means. A rising of combustion pressure generated by ignition of mixture gas in the combustion chamber directly opens said valve. The combustion pressure is, thereby, supplied into the piston upper chamber of the cylinder and pressurize a upper surface of the piston to drive the piston lower abruptly. At the same time, the piston gives the driver connected thereto striking force.

Growing community of inventors

Tokyo, Japan

Takashi Nakazato