Abstract: A time difference correction mechanism includes a cylinder index star wheel that includes teeth and is connected to an hour hand, a cylinder index gear that includes teeth and is connected to a minute hand, the cylinder index gear provided radially outward of the cylinder index star wheel on a same plane as the teeth, a cylinder index lever disposed in the cylinder index gear on a same plane as the cylinder index gear, and a cylinder index spring disposed in the cylinder index gear on the same plane as the cylinder index gear. The cylinder index lever is movable between an engaged position where a claw engages with at least one of the teeth and a disengaged position where the claw disengages with the at least one of the teeth . The cylinder index spring is configured to bias the cylinder index lever to the engaged position.

Abstract: A work machine includes: a partition member provided with an intake port and an exhaust port and forming an engine room; an engine disposed in the engine room; a cooling fan disposed on an intake port side of the engine in the engine room; an exhaust pipe discharging exhaust gas from the engine; and an exhaust duct disposed in the engine room and having an inflow port into which air from the cooling fan flows, and an outflow port. At least a portion of the exhaust duct is disposed above the engine and has a facing surface facing the engine and a through-hole provided in the facing surface. At least a portion of the exhaust pipe is disposed in the through-hole. A gap is formed between an outer surface of the exhaust pipe and an inner surface of the through-hole.

Abstract: An electronic watch including a movement, and the movement includes a movement main body, a plate manufactured by a ferromagnetic metal, and a hook having flexibility, and the plate includes an engagement part that protrudes from the rear surface of the plate and which is configured to accommodate one end part of the hook, and the one end part of the hook is configured to be accommodated by the engagement part by elastically deforming the hook, and the other end part of the hook is fixed to the movement main body.

Abstract: A work machine includes a first cooling unit that protrudes from a first wall surface at a first position of a main flow path and defines a first opening portion between the second wall surface and the first cooling unit; a second cooling unit that protrudes from the second wall surface on a downstream side of the first position in the flow path direction of the main flow path, defines a second opening portion between the first wall surface and the second cooling unit and partly overlaps with the first cooling unit when viewed from the flow path direction; and partition member that defines a first section flow path having the first cooling unit as an inlet and the second opening portion as an outlet and a second section flow path having the first opening portion as an inlet and the second cooling unit as an outlet.

Abstract: A time difference correction mechanism includes a cylinder index star wheel that includes teeth and is connected to an hour hand, a cylinder index gear that includes teeth and is connected to a minute hand, the cylinder index gear provided radially outward of the cylinder index star wheel on a same plane as the teeth, a cylinder index lever disposed in the cylinder index gear on a same plane as the cylinder index gear, and a cylinder index spring disposed in the cylinder index gear on the same plane as the cylinder index gear. The cylinder index lever is movable between an engaged position where a claw engages with at least one of the teeth and a disengaged position where the claw disengages with the at least one of the teeth . The cylinder index spring is configured to bias the cylinder index lever to the engaged position.

Abstract: A variation reduction mechanism of a stop position of a pointer includes a return gear that is driven in conjunction with a time display mechanism, a slip torque spring (friction member) that contacts the return gear to apply a friction force to the return gear to be driven, and a return spring (return spring member) that applies, to the slip torque spring, a torque of the return gear in a direction (dashed line arrow—R direction) opposite to a normal hand movement direction (arrow R direction).

Abstract: A work machine includes a first cooling unit that protrudes from a first wall surface at a first position of a main flow path and defines a first opening portion between the second wall surface and the first cooling unit; a second cooling unit that protrudes from the second wall surface on a downstream side of the first position in the flow path direction of the main flow path, defines a second opening portion between the first wall surface and the second cooling unit and partly overlaps with the first cooling unit when viewed from the flow path direction; and partition member that defines a first section flow path having the first cooling unit as an inlet and the second opening portion as an outlet and a second section flow path having the first opening portion as an inlet and the second cooling unit as an outlet.

Abstract: An electronic watch including a movement, and the movement includes a movement main body, a plate manufactured by a ferromagnetic metal, and a hook having flexibility, and the plate includes an engagement part that protrudes from the rear surface of the plate and which is configured to accommodate one end part of the hook, and the one end part of the hook is configured to be accommodated by the engagement part by elastically deforming the hook, and the other end part of the hook is fixed to the movement main body.

Abstract: The present invention provides a rare earth oxide-supported noble metal catalyst which has a high catalytic activity, is greatly improved in the ammonia production activity per weight of the catalyst and per amount of the supported metal, and enables the synthesis of ammonia under mild conditions. The catalyst according to the present invention is characterized in that ruthenium is supported in a layered form on a praseodymium oxide carrier. The catalyst according to the present invention can be produced by burning a praseodymium oxide precursor at a lower temperature, then at a medium temperature and then at a higher temperature to produce praseodymium oxide, then agitating the resultant praseodymium oxide together with a ruthenium supply source in a solvent, then removing the solvent from the mixture, and then burning the resultant product.

Abstract: Whether a bright state or a dark state is established is determined each time a motor is driven one step, based on a presence or absence of a passing of light through a detection hole disposed in a detection wheel that rotates associated with rotations of a hand wheel coupled with the motor. A switching position X is identified at which the dark state is switched to the bright state when the dark state is determined and thereafter the bright state is determined. A position one step after the identified switching position X is set to be a reference position X+1 of the hand wheel. The reference positions X+1 and X?1 can thereby be set after a driving mechanism is assembled.

Abstract: Whether a bright state or a dark state is established is determined each time a motor is driven one step, based on a presence or absence of a passing of light through a detection hole disposed in a detection wheel that rotates associated with rotations of a hand wheel coupled with the motor. A switching position X is identified at which the dark state is switched to the bright state when the dark state is determined and thereafter the bright state is determined. A position one step after the identified switching position X is set to be a reference position X+1 of the hand wheel. The reference positions X+1 and X?1 can thereby be set after a driving mechanism is assembled.

Abstract: A bucket for a construction machine including a side plate (11); a bottom plate (12), at least a portion of which is connected to the side plate (11); and a laminated plate (20) that is attached to an outside of the side plate (11). At least a part (16) of the portion where the side plate (11) and the bottom plate (12) are connected on an inside of the side plate (11) and the bottom plate (12) is reinforced.

Abstract: A pressure-receiving face plate 29 is mounted on one end face of a piston 12, and a support member 26 is raised on the end face of the piston 12. Disposed on the support member 26 with an allowance are, from the pressure-receiving faceplate 29 respectively, a disk spring 27, a plate 25, and a plunger 28. A flange 26a prevents these members from slipping off the support member 26. When the piston 12 approaches a stroke end, the plunger 28 is inserted in an oil passage 20b and applies a cushioning effect to the piston 12. In addition, a gap between the pressure-receiving faceplate 29 and the plate 25 brought into contact with a cylinder bottom 17 becomes narrow, and produces a squeeze effect such that oil escapes from the narrow gap. This makes it possible to provide a hydraulic cylinder that produces a sufficient impact force at the stroke end of the piston and also reduces noise emitted by the impact force, without increasing a length of the hydraulic cylinder.

Abstract: A pressure-receiving face plate 29 is mounted on one end face of a piston 12, and a support member 26 is raised on the end face of the piston 12. Disposed on the support member 26 with an allowance are, from the pressure-receiving faceplate 29 respectively, a disk spring 27, a plate 25, and a plunger 28. A flange 26a prevents these members from slipping off the support member 26. When the piston 12 approaches a stroke end, the plunger 28 is inserted in an oil passage 20b and applies a cushioning effect to the piston 12. In addition, a gap between the pressure-receiving faceplate 29 and the plate 25 brought into contact with a cylinder bottom 17 becomes narrow, and produces a squeeze effect such that oil escapes from the narrow gap. This makes it possible to provide a hydraulic cylinder that produces a sufficient impact force at the stroke end of the piston and also reduces noise emitted by the impact force, without increasing a length of the hydraulic cylinder.

Abstract: A bucket for a construction machine including a side plate (11); a bottom plate (12), at least a portion of which is connected to the side plate (11); and a laminated plate (20) that is attached to an outside of the side plate (11). At least a part (16) of the portion where the side plate (11) and the bottom plate (12) are connected on an inside of the side plate (11) and the bottom plate (12) is reinforced.

Abstract: A vibration damping device capable of maintaining high vibration damping effect, and a bucket for a construction machine. The vibration damping device has a laminated plate (20) having at least its inner region fixed in a noise-emitting base material (11), the inner region being a region (G) other then a region which becomes a loop in a vibration mode when the base material (11) is vibrated in a vibration mode with a predetermined frequency.

Abstract: A vibration damping device capable of maintaining high vibration damping effect, and a bucket for a construction machine. The vibration damping device has a laminated plate (20) having at least its inner region fixed in a noise-emitting base material (11), the inner region being a region (G) other then a region which becomes a loop in a vibration mode when the base material (11) is vibrated in a vibration mode with a predetermined frequency.

Abstract: An engine cover 17 has a cover main body 19 and an engine hood 20 which is attached to an opening portion formed on an upper surface of the cover main body 19 and a plurality of reinforcing plates 24 are fixed to an inner surface of the engine hood 20. First to fourth reinforcing plates 24a to 24d of a plurality of reinforcing plates 24 define a space in an engine portion 14. An expansion chamber 26 which is communicated with an intake passage 23 reaching to an engine and resonant chambers 27, 28 which are communicated with the expansion chamber 26 via ports 29 are formed in the engine portion 14.

Abstract: A vibration damping device capable of maintaining high vibration damping effect, and a bucket for a construction machine. The vibration damping device has a laminated plate (20) having at least its inner region fixed in a noise-emitting base material (11), the inner region being a region (G) other then a region which becomes a loop in a vibration mode when the base material (11) is vibrated in a vibration mode with a predetermined frequency.

Abstract: The invention provides a vibration damping device capable of maintaining high vibration damping effect, and a bucket for a construction machine. To this end, the vibration damping device has a laminated plate (20) having at least its inner region fixed in a noise-emitting base material (11), the inner region being a region (G) other then a region which becomes a loop in a vibration mode when the base material (11) is vibrated in a vibration mode with a predetermined frequency.