Patents by Inventor Masaru Fujikawa
Masaru Fujikawa 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).
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Publication number: 20240099470Abstract: An easy-assembly bed includes a top plate, and a leg portion having a plurality of leg members that are linked using notched joints. The top plate is constituted of a bonded material, which includes a plate-shaped foam plate formed with a foam body, and a front board member and a rear board member having an identical shape to the foam plate and that are bonded to the rear surface and the front surface of the foam plate, respectively, and a top plate molded resin portion overing the cut ends of the bonded material with a molded resin; and the leg members are each constituted of a grooved bonded material, which includes a plate-shaped grooved foam plate having locking grooves and formed with a foam body, and a grooved front board member and a grooved rear board member on the front surface and the rear surface of the grooved foam plate.Type: ApplicationFiled: December 20, 2021Publication date: March 28, 2024Applicants: TOPPAN INC., KINKI UNIVERSITYInventors: Hajime MONZEN, Mikoto TAMURA, Masaru HAYAKAWA, Manabu TSUJINO, Takashi MIZOBUCHI, Nobuo HAMA, Yuichirou FUJIKAWA
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Patent number: 6554255Abstract: A lifting gear, which is provided with a load-sheave that shifts a sinuate body in the longitudinal direction thereof and a rotary body that rotates the load-sheave, and in which the rotary body include a power connecting section that can be coupled to an electric driver, wherein the load-sheave is driven by the electric driver that is not incorporated in the lifting gear.Type: GrantFiled: May 2, 2002Date of Patent: April 29, 2003Assignee: Elephant Chain Block Co., Ltd.Inventor: Masaru Fujikawa
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Patent number: 6545655Abstract: An LCD device is provided, which makes it possible to simultaneously display two images on a screen at unequal resolutions. This device is comprised of an LCD panel having pixels arranged in a matrix array and first and second display areas, where part of the pixels are located in the first display area and the remainder are located in the second display area. First and second horizontal drivers supply first and second data to the pixels arranged along the odd-numbered rows of the matrix in the first and second display areas, respectively. Third and fourth horizontal drivers supply third and fourth data to the pixels arranged along the even-numbered rows of the matrix in the first and second display areas, respectively. A first vertical driver selects the pixels arranged along the odd-numbered rows in the first and second display areas. A second vertical driver selects the pixels arranged along the even-numbered rows in the first and second display areas.Type: GrantFiled: March 9, 2000Date of Patent: April 8, 2003Assignee: NEC CorporationInventor: Masaru Fujikawa
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Publication number: 20020121633Abstract: A lifting gear, which is provided with a load-sheave that shifts a sinuate body in the longitudinal direction thereof and a rotary body that rotates the load-sheave, and in which the rotary body include a power connecting section that can be coupled to an electric driver, wherein the load-sheave is driven by the electric driver that is not incorporated in the lifting gear.Type: ApplicationFiled: May 2, 2002Publication date: September 5, 2002Inventor: Masaru Fujikawa
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Patent number: 6390523Abstract: A belt hoist designed to enable a hanging member to be further reliably secured to a belt to provide a further improved safety under load less than a permissible maximum load. In the belt hoist, a winding shaft 44 on which one end portion of a belt 3 is coiled comprises a first shaft 44a and a second shaft 44b, and the one end portion of the belt 3 comprises a first coiling portion 31 coiled on the first shaft 44a to be superposed thereon, a second coiling portion 32 coiled on the first coiling portion 31 to be superposed thereon, a third coiling portion 33 coiled on the second shaft 44b to be superposed thereon, and a fourth coiling portion 34 coiled on the third coiling portion 33 to be superposed thereon.Type: GrantFiled: March 9, 2001Date of Patent: May 21, 2002Assignee: Elephant Chain Block Co., Ltd.Inventors: Masaru Fujikawa, Koji Saai
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Patent number: 6371543Abstract: A sling capable to easily raise a hanging load such as a drum with a simplified structure. In a chain sling (or a wire sling) in which a master link and hooks are connected with each other via link chains (or wire ropes), lower portions of the hooks are formed to be bent at an angle smaller than 90° and also a bottom portion of the master link is flattened. With this structure, even when the drum has no ring-like protrusion at which an upper lid is mounted, if holes are formed around the side of the drum, the front ends of the hooks can be reliably hooked in the holes to raise the drum. Also, when a lifting portion of a forklift is brought into contact with the flattened bottom portion of the master link, the drum can be easily slung by the forklift as well.Type: GrantFiled: August 15, 2000Date of Patent: April 16, 2002Assignee: Elephant Chain Block Co., Ltd.Inventors: Masaru Fujikawa, Koji Saai
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Publication number: 20010052709Abstract: A belt hoist designed to enable a hanging member to be further reliably secured to a belt to provide a further improved safety under load less than a permissible maximum load. In the belt hoist, a winding shaft 44 on which one end portion of a belt 3 is coiled comprises a first shaft 44a and a second shaft 44b, and the one end portion of the belt 3 comprises a first coiling portion 31 coiled on the first shaft 44a to be superposed thereon, a second coiling portion 32 coiled on the first coiling portion 31 to be superposed thereon, a third coiling portion 33 coiled on the second shaft 44b to be superposed thereon, and a fourth coiling portion 34 coiled on the third coiling portion 33 to be superposed thereon.Type: ApplicationFiled: March 9, 2001Publication date: December 20, 2001Inventors: Masaru Fujikawa, Koji Saai
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Patent number: 6142448Abstract: To prevent a random coil of and an overwind of a belt with simple structure, a belt hoist includes a random coil preventing member pressed against the belt wound around a winding member to prevent a random coil of the belt, the random coil preventing member being movable in response to changes in circle diameter of the belt; and control means for controlling drive of drive means in association with the random coil preventing member when the circle diameter becomes a specified diameter. Further, a belt guide having a belt guide portion is supported between two side plates in such a freely sliding manner as to allow the winding of the belt onto the winding member.Type: GrantFiled: October 28, 1999Date of Patent: November 7, 2000Assignee: Elephant Chain Block Co., Ltd.Inventors: Hidenori Fujiwara, Masaru Fujikawa, Koji Saai
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Patent number: 6030015Abstract: A belt hoist capable of firmly joining a hook to a free end portion of a belt, although the hook holds the free end portion of the belt in a clipping manner. The hook includes a support rod around which the belt is wound and a holding portion for holding the support rod in sandwich, and the free end portion of the belt includes a first coiling portion wound around the support rod in direct contact therewith and a second coiling portion wound around the first coiling portion of the belt in direct contact therewith, with the first and second coiling portions of the belt being wound in opposite directions to each other.Type: GrantFiled: July 14, 1997Date of Patent: February 29, 2000Assignee: Elephant Chain Block Co., Ltd.Inventors: Masaru Fujikawa, Koji Saai
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Patent number: 6003843Abstract: To prevent a random coil of and an overwind of a belt with simple structure, a belt hoist includes a random coil preventing member pressed against the belt wound around a winding member to prevent a random coil of the belt, the random coil preventing member being movable in response to changes in diameter of the belt; and control means for controlling drive of drive means in association with the random coil preventing member when the diameter becomes a specified diameter. Further, a belt guide having a belt guide portion is supported between two side plates in such a freely sliding manner as to allow the winding of the belt onto the winding member.Type: GrantFiled: July 11, 1997Date of Patent: December 21, 1999Assignee: Elephant Chain Block Co., Ltd.Inventors: Hidenori Fujiwara, Masaru Fujikawa, Koji Saai
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Patent number: 5957433Abstract: A belt hoist for allowing fixture of a belt to a winding member to be strengthened to improve the reliability, with a simple structure. The winding member around which the belt is wound includes a shaft insertion bore at the center thereof; a belt fixing surface for allowing the belt to be fixed on a winding periphery; and a belt holder fitted on the belt fixing surface to press an end portion of the belt against the belt fixing surface. The belt fixing surface has a width not less than an inner diameter of the shaft insertion bore, and a fixing bore is so bored in the belt fixing surface as to escape from the shaft insertion bore, whereby the end portion of the belt is inserted in and fixed between the belt fixing surface and the belt holder by a fixing member fixed into the fixing bore.Type: GrantFiled: July 14, 1997Date of Patent: September 28, 1999Assignee: Elephant Chain Block Co., Ltd.Inventors: Masaru Fujikawa, Koji Saai
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Patent number: 5533712Abstract: An elastic hoist and traction apparatus in which a friction receiving surface is provided at a rotor of a motor, and an overload prevention device is provided at the reverse side to a load on a brake for stopping a driving shaft and between the motor shaft and the friction receiving surface of the rotor or between the motor shaft and the driving shaft, thereby solving the problem created in that the overload prevention device is provided at the load side of the brake.Type: GrantFiled: December 3, 1993Date of Patent: July 9, 1996Assignee: Elephant Chain Block Company LimitedInventors: Masaru Fujikawa, Kazunori Tsuda, Munenobu Honda
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Patent number: 5437432Abstract: A hoist machine provided with a driving member driven by a capacitor start single phase motor, which is provided with a governor and a switching device for turning a start capacitor on and off following operation of the governor. The switching device is provided with a switch control panel, which, when the driving member drives to hoist a load, maintains on-operation of the lowering side switch and turns off the hoisting side switch following the operation of the governor to thereby cut off energization to the start capacitor, and when in a lowering operation, maintains on-operation of the hoisting side switch and turns off the lowering side switch to thereby cut off energization of the start capacitor.Type: GrantFiled: April 16, 1993Date of Patent: August 1, 1995Assignee: Elephant Chain Block Company LimitedInventor: Masaru Fujikawa
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Patent number: 5401216Abstract: A belt tightening device, wherein a basic end of a first belt located at one lengthwise side of the belt tightening device is fixed to a windup shaft driven by operating an operating lever, a wind-in member and a fixed rod are provided at the other lengthwise side of the same, and a belt length adjusting mechanism is provided which adjusts a length of a second belt located at the other lengthwise side a main body of the belt tightening device and can fix the second belt in the position where the length has been adjusted.Type: GrantFiled: July 6, 1993Date of Patent: March 28, 1995Assignee: Elephant Chain Block Company LimitedInventor: Masaru Fujikawa
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Patent number: D459854Type: GrantFiled: August 15, 2000Date of Patent: July 2, 2002Assignee: Elephant Chain Block Co., Ltd.Inventors: Masaru Fujikawa, Koji Saai
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Patent number: D459855Type: GrantFiled: August 15, 2000Date of Patent: July 2, 2002Assignee: Elephant Chain Block Co., Ltd.Inventors: Masaru Fujikawa, Koji Saai