Max Co., Ltd.

Max Kabushiki Kaisha

Seiko Instruments Inc

Shimizu Construction Co., Ltd.

Dainihon Glass Industry Co., Ltd.

Kabushikikaisha Riken & Simizu Construction Co.

Kyojin Rope Manufacturing Co., Ltd.

Noboru Ishikawa

Ichiro Kusakari

Takahiro Nagaoka

Yasushi Nakagawa

Osamu Itagaki

Satoshi Nakayama

Hiroshi Yamakawa

Shuichi Ishii

Atsushi Matsuoka

Akikazu Odawara

Terufumi Hamano

Michiaki Adachi

Kazuo Chinone

Yasushi Yokochi

Minoru Sawaide

Hiroshi Tanaka

Youichi Kimura

Takeo Fujiyama

Yoshio Fukushima

Mitsugu Takezaki

Syuichi Ishii

Minoru Sugita

Teruyuki Nakatsuji

Hiroshi Hanagasaki

Tadashi Fujisaki

Kazuhiko Kuraguchi

Nobuo Kishi

Hiroyoshi Ishii

Misao Kaneko

Hideyo Shiokawa

Kazuhiko Mashimo

Kenzo Suzuki

Yasuo Inada

Satoshi Osuka

Shinobu Iino

A reinforcement binding machine capable of detecting, by the rotation of a reel, that wire on the reel is consumed and the reel, the reinforcement binding machine wherein an interrupter is installed in the cassette case of a binding machine body, a cover is rotatably held on a reel mounting shaft, an opening part is formed in the cover, a projection is formed on the reel and fitted into the opening part, and a color with a lightness different from that of the cover is applied to the projection to detect the rotation of the reel by the interrupter.

Reinforcement binding machine, reel, and method of detecting rotation of reel

A front end of a ball screw shaft driven by a motor is connected with a binding line clamp apparatus () including three clamp plates (). The left and right clamp plates () are constituted to be brought into elastic contact with the center clamp plate () and close the left and right clamp plates by operation of cams () when a sleeve is moved rearward. In a state of opening the clamp plates, a binding line is fed out to an upper side by passing through an interval between the right clamp plate () and the center clamp plate (), formed in a loop shape and moved into an interval between the left clamp plate () and the center clamp plate (). When the sleeve is moved rearward by driving to rotate a ball screw shaft, the left and right clamp plates are closed to grasp a front end and a rear end of the binding line loop and thereafter, the binding line clamp apparatus is rotated to twist the binding line to bind a reinforcing bar.

Reinforcing steel bar typing machine

A reinforcement binding machine and a reel used for the machine capable of solving such a problem that wire comes out of the flange of the reel whereby wire feeding is disabled, wherein a recessed part (A) is steppingly provided at the opening edge part of a cassette case (), the flange of the cassette case () on the opening part side is formed in a large flange () having a diameter fitted to the recessed part (A) of the reel (), an engaging claw () for preventing the reel from coming out of a reel mounting shaft () is formed on the inner peripheral surface of a hub hole () for inserting the reel mounting shaft () of the reel () therein, and the engaging claw () and the reel mounting shaft () are engaged with each other so that the reel () can be rotated intermittently.

Reinforcement binding machine and reel used for the machine

A reinforcement binding machine () capable of binding reinforcement () by winding wire () in loop shape around the reinforcement (), wherein irregular parts () are formed on the peripheral surface of a reel mounting shaft (), an engagement claw () is formed on the inner peripheral surface of a hub hole () of the reel (), and an engagement part () engaged with the irregular parts () to prevent the reel () from racing is formed at the tip part of the engagement claw (), whereby the reel can be prevented from racing while allowing the reel to rotate in normal and reverse directions so as to eliminate the occurrence of entanglement of the wire.

A final gear () and a ball screw shaft () of a rotation drive system of a binding line twist mechanism are connected by a spline and a shaft portion of a center clamp plate () of a binding line clamp apparatus () is connected to a front end of the ball screw shaft (). A shift mechanism for moving the ball screw shaft () and the binding line clamp apparatus () in a front and rear direction by a slide motor () is provided. A wire (W) is wound around a reinforcing bar (S) by a binding line feed mechanism, the wire is grasped by a front end portion of the binding line clamp apparatus () and thereafter, a shift mechanism applies a tension to a loop of the wire by moving rearward the binding line clamp apparatus (). The binding line clamp apparatus () is rotated by a twist motor () and the shift mechanism twists up the wire by moving forward the binding line clamp apparatus (). Since the wire is applied with the tension and twisted, a reinforcing bar binding strength of the wire loop is stabilized.

Reinforcing steel bar tying machine

A binding machine for reinforcing bars comprising a binding machine body, a bending guide arm, a feed adjustment mechanism, and a twisting mechanism. The bending guide arm is arranged at an end of the binding machine body. A binding wire is sent outside reinforcing bars from the bending guide arm and is formed into a loop, and then a portion of the loop is twisted by the twisting mechanism so as to bind the reinforcing bars. The feed adjustment mechanism adjusts a feed of the binding wire according to one of a diameter of the reinforcing bars and a diameter of the loop of the binding wire wound round the reinforcing bars.

Binding machine for reinforcing bars

In a nondestructive method of quantitatively evaluating a degree of plasticity of ferromagnetic materials, a magnetic field of a surface of a ferromagnetic test body is measured using a magnetic sensor, and the surface of the ferromagnetic test body is partitioned into regions corresponding to domains of the ferromagnetic test body. A difference between a maximum value and a minimum value of a magnetic signal corresponding to the magnetic field for each of the domains is calculated as a spatial difference amount. A distribution width of the spatial difference amounts and an amount of residual strain corresponding to an amount of plastic deformation of the ferromagnetic test body is measured. A correlation between the distribution width of the spatial difference amounts and the amount of residual strain is calculated. A degree of plasticity of the ferromagnetic test body in calculated in accordance with the correlation.

Nondestructive method of quantitatively evaluating degree of plasticity

To provide an effective method of nondestructively and easily judging plasticization of steel used in a real construction. A magnetic sensor 10 is made to scan along the surface of steel to detect a magnetic field caused by a magnetic anisotropy induced by plastic deformation of the steel, and the existence and position of the plasticization is judged from the state of distribution of the magnetic field. As a magnetic sensor, a differential type one comprised of detection coils 10a and 10b, the winding directions of which are opposite to each other, is used to compensate a magnetic field intrinsic to the steel.

Method of detecting plastic deformation in steel using a differential

A screw driving and turning machine comprises: a body having a nose portion; a driving cylinder received in the body; a screw driving mechanism having a driving piston having a driving and turning bit slidably accommodated in the driving cylinder, wherein compressed air is fed into the driving cylinder to drive the driving piston, and a screw held in the nose portion of the body is driven to a state in which a head portion of the screw is raised; a screw turning mechanism having an air motor driven by a portion of compressed air fed to the driving cylinder, for turning the screw, which has been driven by the driving piston; a stop valve for opening and closing an air passage between the driving cylinder and the air motor, arranged in the middle of the air passage; and a contact arm slidably arranged along the nose portion, for operating the stop valve by being pushed to the body in accordance with pressing an end of the contact arm against a material into which the screw is driven, wherein the feed of compressed air from the driving cylinder to the air motor is stopped by closing the stop valve when the contact arm is pushed to a predetermined position by pressing an end of the contact arm against the material into which the screw is driven.

Screw driving and turning machine

A box nailing machine includes a piston within a cylinder to drive a nail. A main selector valve introduces compressed air into the cylinder and discharges the compressed air from the cylinder. A start operation valve operates the main selector valve. A trigger device for the box nailing machine comprises: a trigger switch operated by a trigger lever; a contact switch operated by the contact arm; an electromagnetic valve serving as the start operation valve; a logical circuit for applying a drive current to the electromagnetic valve when both the trigger switch and the contact switch are turned on; and a controller which includes a timer with a predetermined time limit. The timer is started in accordance with a trigger signal of the trigger switch and prohibits the drive current from the electromagnetic valve when the timer counts the predetermined time period. The timer is reset upon release of the trigger.

Trigger device for box nailing machine and box nailing machine having

The operation mode of a nailing machine can be automatically and reliably switched, for its selection, from the successive nailing mode and the one-shot nailing mode and vice versa by changing the order of operating a trigger lever and a contact arm. In the selected mode, the nailing work can be performed. By releasing both the trigger lever and the contact arm, the machine is returned to its initial mode. When the contact arm is moved to the top dead center after the trigger lever is operated, a portion of a slide die comes in contact with the underside of the trigger lever. When the trigger lever is operated after the contact arm is moved to the top dead center, the portion of the slide die comes in contact with the upper side of the trigger lever, thereby preventing a further movement of the contact arm to the bottom dead center.

Drive device for a nailing machine

A magnetic-shielding sheet comprising a laminated-structure layer of soft magnetic amorphous alloy flakes, said soft magnetic amorphous alloy flakes being of 5 to 100 .mu.m thick and 10-15000 in aspect ratio (ratio of maximum length to maximum thickness) is provided.

Magnetic-shielding sheet

A rob material includes an elongated matrix made of synthetic resin, a plurality of first elongated textile elements, and a plurality of second elongated textile elements, the first and second elements being embeded within the matrix, parallel to each other along the matrix, each of the first elements being composed of a plurality of yarns braided together, the second elements having a lower breaking elongation rate than said first elements. In such a rod material, the second elements have a substantially complete elasticity, and the first elements have such an elongation rate as to elongate further after the fracture of the second elements. Therefore, the stress-strain curve of the rod material shows a high elastic modulus in the elastic region and a high breaking elongation rate. In other words, the stress-strain behavior is similar to that of steel rods.

Rod material

The present invention provides a concrete composition having a heat resisting property and dimensional stability, which comprises a cement selected from the group consisting of a self-hardening cement, a latent hydraulic material, a mixed cement and a thermosetting cement, a hydraulic material, an aggregate, a carbonaceous material acting as a binder and selected from the group consisting of a powdered coke and pitch coke, and potassium titanate whisker. Since the concrete composition of the invention is resistant to firing and can be used at a high temperature, a solidified mass prepared therefrom can be applied with a glaze and heated to have an enamelled surface.

Growing community of inventors

Tokyo, Japan

Noboru Ishikawa