Abstract: A semiconductor storage device includes a first memory area configured in a volatile semiconductor memory, second and third memory areas configured in a nonvolatile semiconductor memory, and a controller which executes following processing. The controller executes a first processing for storing a plurality of data by the first unit in the first memory area, a second processing for storing data outputted from the first memory area by a first management unit in the second memory area, and a third processing for storing data outputted from the first memory area by a second management unit in the third memory area.

Abstract: The present invention provides a rotary damper in which both yields and braking characteristics can be enhanced. The rotary damper of the invention includes a valve mechanism which comprises an operating chamber 7 through which fluid can pass, a valve body 8 which forwardly moves from a natural state position when the valve body 8 receives fluid pressure and which can forwardly moves in the operating chamber 7, and a first spring 9 capable of giving a resistance to the forward movement of the valve body 8. The valve mechanism can reduce a flow rate of fluid which passes through the operating chamber 7 by a flow path 14 formed between the valve body 8 and a peripheral wall 7a of the operating chamber 7. A reducing amount of fluid can be increased as a moving distance of the valve body 8 which forwardly moves in the operating chamber 7 is increased.

Abstract: The present invention provides a rotary damper in which both yields and braking characteristics can be enhanced. The rotary damper of the invention includes a valve mechanism which comprises an operating chamber 7 through which fluid can pass, a valve body 8 which forwardly moves from a natural state position when the valve body 8 receives fluid pressure and which can forwardly moves in the operating chamber 7, and a first spring 9 capable of giving a resistance to the forward movement of the valve body 8. The valve mechanism can reduce a flow rate of fluid which passes through the operating chamber 7 by a flow path 14 formed between the valve body 8 and a peripheral wall 7a of the operating chamber 7. A reducing amount of fluid can be increased as a moving distance of the valve body 8 which forwardly moves in the operating chamber 7 is increased.

Abstract: The present invention provides a rotary damper in which both yields and braking characteristics can be enhanced. The rotary damper of the invention includes a valve mechanism which comprises an operating chamber 7 through which fluid can pass, a valve body 8 which forwardly moves from a natural state position when the valve body 8 receives fluid pressure and which can forwardly moves in the operating chamber 7, and a first spring 9 capable of giving a resistance to the forward movement of the valve body 8. The valve mechanism can reduce a flow rate of fluid which passes through the operating chamber 7 by a flow path 14 formed between the valve body 8 and a peripheral wall 7a of the operating chamber 7. A reducing amount of fluid can be increased as a moving distance of the valve body 8 which forwardly moves in the operating chamber 7 is increased.

Abstract: The present invention provides a rotary damper in which both yields and braking characteristics can be enhanced. The rotary damper of the invention includes a valve mechanism which comprises an operating chamber 7 through which fluid can pass, a valve body 8 which forwardly moves from a natural state position when the valve body 8 receives fluid pressure and which can forwardly moves in the operating chamber 7, and a first spring 9 capable of giving a resistance to the forward movement of the valve body 8. The valve mechanism can reduce a flow rate of fluid which passes through the operating chamber 7 by a flow path 14 formed between the valve body 8 and a peripheral wall 7a of the operating chamber 7. A reducing amount of fluid can be increased as a moving distance of the valve body 8 which forwardly moves in the operating chamber 7 is increased.

Abstract: The present invention provides a rotary damper in which both yields and braking characteristics can be enhanced. The rotary damper of the invention includes a valve mechanism which comprises an operating chamber 7 through which fluid can pass, a valve body 8 which forwardly moves from a natural state position when the valve body 8 receives fluid pressure and which can forwardly moves in the operating chamber 7, and a first spring 9 capable of giving a resistance to the forward movement of the valve body 8. The valve mechanism can reduce a flow rate of fluid which passes through the operating chamber 7 by a flow path 14 formed between the valve body 8 and a peripheral wall 7a of the operating chamber 7. A reducing amount of fluid can be increased as a moving distance of the valve body 8 which forwardly moves in the operating chamber 7 is increased.

Abstract: Described is a rotary damper comprising a partition wall to partition space formed between a rotor and a housing to house said rotor and to form a fluid chamber to be fluid-filled; and a vane to be disposed in said fluid chamber; and a plug to close an opening of said housing; wherein said plug has a flange to be used for mounting which protrudes from an outer circumferential surface of said plug and a stepped portion to enable part of a roller caulking an edge of said opening of said housing to revolve and travel along a peripheral edge of said housing so that said plug having said flange is coupled to said housing by caulking an edge of said opening of said housing.

Abstract: An object of the invention is to make an apparatus compact and simplify a structure. The invention provides a motion control apparatus which is provided with a pressing member pressing a fluid, and a fluid control mechanism (130) controlling a movement of the fluid pressed by the pressing member.

Abstract: The present invention is a rotary damper capable of reducing manufacturing cost, comprising: partition walls 3 that partition a space formed between a rotor 2 and a housing 1 for housing the rotor 2 to form fluid chambers filled with fluid; and vanes 4 provided in the fluid chamber, and is characterized by integrally forming the housing 1 and the partition walls 3 by press working. Therefore, according to the present invention, it is possible to reduce the weight of a product and to reduce manufacturing cost by a large amount as compared with a conventional casting method such as zinc die casting.

Abstract: The present invention provides a rotary damper in which both yields and braking characteristics can be enhanced. The rotary damper of the invention includes a valve mechanism which comprises an operating chamber 7 through which fluid can pass, a valve body 8 which forwardly moves from a natural state position when the valve body 8 receives fluid pressure and which can forwardly moves in the operating chamber 7, and a first spring 9 capable of giving a resistance to the forward movement of the valve body 8. The valve mechanism can reduce a flow rate of fluid which passes through the operating chamber 7 by a flow path 14 formed between the valve body 8 and a peripheral wall 7a of the operating chamber 7. A reducing amount of fluid can be increased as a moving distance of the valve body 8 which forwardly moves in the operating chamber 7 is increased.

Abstract: A rotary damper is provided which can include a valve (6) which automatically varies a flow rate of a viscous fluid passing through fluid passages (5a, 5b) in correspondence with variation in load. The valve (6) comprises a leaf spring. The flow rate-adjusting portion (6g) constituting the valve (6) is provided so as not to close the fluid passages (5a, 5b) when no load is applied and bends so that its one surface side projects when no load is applied and becomes deformed in a direction in which the fluid passage (5b) is closed when receiving pressure of the viscous fluid on its one surface side. The flow rate of the viscous fluid passing through the fluid passage (5b) is adjusted depending on a degree of deformation of the flow rate-adjusting portion (6g) corresponding to magnitude of pressure of the viscous fluid applied to one surface side of the flow rate-adjusting portion (6g).

Abstract: It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load. A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A vane 3 is disposed in the fluid chamber 2. The vane 3 is formed with a fluid passage 5, and is provided with a valve 6. The valve 6 automatically varies a flow rate of the viscous fluid passing through the fluid passage 5 in correspondence with variation in load. With this structure, it is possible to automatically adjust the exhibited braking force in correspondence with variation in load caused by variation in rotational motion of a subject to be controlled, and to reduce variation in rotation speed of the subject to be controlled to an extremely small value.

Abstract: It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load. A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A vane 3 is disposed in the fluid chamber 2. The vane 3 is formed with a fluid passage 5, and is provided with a valve 6. The valve 6 automatically varies a flow rate of the viscous fluid passing through the fluid passage 5 in correspondence with variation in load. With this structure, it is possible to automatically adjust the exhibited braking force in correspondence with variation in load caused by variation in rotational motion of a subject to be controlled, and to reduce variation in rotation speed of the subject to be controlled to an extremely small value.

Abstract: It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load. A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A vane 3 is disposed in the fluid chamber 2. The vane 3 is formed with a fluid passage 5, and is provided with a valve 6. The valve 6 automatically varies a flow rate of the viscous fluid passing through the fluid passage 5 in correspondence with variation in load. With this structure, it is possible to automatically adjust the exhibited braking force in correspondence with variation in load caused by variation in rotational motion of a subject to be controlled, and to reduce variation in rotation speed of the subject to be controlled to an extremely small value.

Abstract: It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load. A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A vane 3 is disposed in the fluid chamber 2. The vane 3 is formed with a fluid passage 5, and is provided with a valve 6. The valve 6 automatically varies a flow rate of the viscous fluid passing through the fluid passage 5 in correspondence with variation in load. With this structure, it is possible to automatically adjust the exhibited braking force in correspondence with variation in load caused by variation in rotational motion of a subject to be controlled, and to reduce variation in rotation speed of the subject to be controlled to an extremely small value.

Abstract: An object of the invention is to provide a rotary damper which can individually control two controlled subjects independently rotatable with each other by utilizing both a viscous resistance by a viscous material and a resistance by a viscous fluid and putting properties thereof to good use. A rotary damper (1A) is provided with first and second chambers (4, 5) which are separated by a partition wall (3), a rotor (6) which is rotatably arranged within the first chamber (4), a viscous material (7) which is filled in a slight gap between the rotor (6) and a slidable contact surface slidably contacted with the rotor (6), a viscous fluid (11) which is filled in the second chamber (5), and a vane (12) which is swingably arranged within the second chamber (5) filled with the viscous fluid (11).

Abstract: It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load. A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A vane 3 is disposed in the fluid chamber 2. The vane 3 is formed with a fluid passage 5, and is provided with a valve 6. The valve 6 automatically varies a flow rate of the viscous fluid passing through the fluid passage 5 in correspondence with variation in load. With this structure, it is possible to automatically adjust the exhibited braking force in correspondence with variation in load caused by variation in rotational motion of a subject to be controlled, and to reduce variation in rotation speed of the subject to be controlled to an extremely small value.

Abstract: An apparatus which forms a discharge electric field in order to discharge an object. The apparatus includes an electrode member facing and separated by a preselected gap from the object, and a power source which applies a discharge voltage to the electrode member to thereby cause discharge to occur between the object and the electrode member. Further, the electrode member at the gap includes a material selected in association with the gap so that a functional relationship between the discharge voltage and a discharge current caused by the discharge voltage is a continuous function.

Abstract: A bidirectional retaining clutch capable of stopping rotation of a rotated object such as a revolving shaft of a pivoted cover of a personal computer, a door sheave of a sliding door or the like in one direction at any desired position while keeping it freely rotatable, as well as ensuring free rotation of the rotated object in an opposite direction as desired when torque of a predetermined level or more is applied. An outer cylindrical structure arranged so as to rotated relative to a shaft includes a pair of roller positioning members each provided on an inner surface with roller receiving recesses of an elliptic shape. The rollers which are received in the recesses selectively move in the recesses so as to permit the shaft to be revolved relative to the outer cylindrical structure in one direction while preventing revolution of the shaft in an opposite direction.

Abstract: If a member made of rubber containing carbon black and a member made of aluminium alloy come into contact with each other under existence of an electrolytic solution, corrosion of the aluminium alloy member would proceed. Such corrosion of the aluminium alloy member can be suppressed by selecting a surface resistivity (surface electric resistivity) of the rubber member at 10.sup.6 .OMEGA. or higher, and more preferably 10.sup.7 .omega. or higher.