Patents by Inventor Akihiko Okimura
Akihiko Okimura 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: 20120306244Abstract: A damper includes a vessel; a partitioning member which partitions the interior of the vessel into two chambers for accommodating a viscous fluid, and which rotates together with the vessel in a direction and is movable in an axial direction; a moving force imparting structure for imparting to the partitioning member a moving force in a direction by the input of rotation in a direction; a resilient structure for resiliently urging the partitioning member in a direction; a through hole for allowing the chambers inside the vessel to communicate with each other; and an allowing/limiting member which allows the viscous fluid to flow reciprocally between the chambers through the through hole, and which limits the flow of the viscous fluid in one chamber into the other chamber in the direction through the through hole.Type: ApplicationFiled: June 18, 2012Publication date: December 6, 2012Applicant: OILES CORPORATIONInventors: Akihiko Okimura, Naohiro Horita, Yoshiteru Igarashi
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Patent number: 8210609Abstract: A damper 1 includes a vessel 2; a partitioning member 6 which partitions the interior of the vessel 2 into two accommodation chambers 4 and 5 for accommodating a viscous fluid 3, and which rotates together with the vessel 2 in an R direction and is movable in an axial direction A; a moving force imparting means 7 for imparting to the partitioning member 6 a moving force in an A1 direction by the input of rotation in an R1 direction; a resilient means 8 for resiliently urging the partitioning member 6 in an A2 direction; a through hole 9 for allowing the two accommodation chambers 4 and 5 inside the vessel 2 to communicate with each other; and an allowing/limiting member 10 which allows the viscous fluid 3 accommodated in the two accommodation chambers 4 and 5 in the vessel 2 to flow reciprocally between the two accommodation chambers 4 and 5 through the through hole 9, and which limits the flow of the viscous fluid 3 in the accommodation chamber 4 into the accommodation chamber 5 in the A2 direction through tType: GrantFiled: April 25, 2008Date of Patent: July 3, 2012Assignee: Oiles CorporationInventors: Akihiko Okimura, Naohiro Horita, Yoshiteru Igarashi
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Patent number: 8210608Abstract: A damper is provided which damps an applied external force in accordance with the strength of the external force (impact strength). The damper 10 comprises a vessel 20 having a cylindrical chamber 21 filled with a viscous fluid, a turn member 60 turned by the external force, a slider member 40 which is moved in the chamber 21 of the vessel 20 by turn of the turn member 60, partition member 80 engaged with the slider member 40, a coiled spring 100 for energizing the slider member 40 toward the turn member 60, and a resin cap 100 blocking an opening of the vessel 20.Type: GrantFiled: October 18, 2007Date of Patent: July 3, 2012Assignee: Oiles CorporationInventors: Yoshiteru Igarashi, Akihiko Okimura
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Patent number: 8191965Abstract: A damper 1 includes a vessel 2; a partitioning member 6 which partitions an internal space of the vessel 2 into two accommodation chambers 4 and 5 for accommodating a viscous fluid 3 and which is movable with respect to the vessel 2; a moving force imparting device 7 for imparting to the partitioning member 6 a moving force in an A1 direction by the input of rotation in an R2 direction with respect to the vessel 2, so that the moving velocity is set to one corresponding to the rotating velocity of that input of rotation; a resilient device 8 for resiliently urging the partitioning member 6 in an A2 direction; a communicating hole 9 formed in the partitioning member 6; and a flow limiting device 10 for limiting the flow of the viscous fluid 3 in the accommodating chamber 4 into the accommodating chamber 5 through the communicating hole 9 when the internal pressure of the viscous fluid 3 accommodated in the accommodating chamber 4 has exceeded a fixed value.Type: GrantFiled: April 27, 2009Date of Patent: June 5, 2012Assignee: Oiles CorporationInventors: Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
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Publication number: 20120091767Abstract: A damper includes a vessel; a partitioning member which partitions an internal space of the vessel into two accommodation chambers for accommodating a viscous fluid and which is movable with respect to the vessel; a moving force imparting device for imparting to the partitioning member a moving force in an A1 direction by the input of rotation in an R2 direction with respect to the vessel, so that the moving velocity is set to one corresponding to the rotating velocity of that input of rotation; a resilient device for resiliently urging the partitioning member in an A2 direction; a communicating hole formed in the partitioning member; and a flow limiting device for limiting the flow of the viscous fluid in the accommodating chamber into the accommodating chamber through the communicating hole when the internal pressure of the viscous fluid accommodated in the accommodating chamber has exceeded a fixed value.Type: ApplicationFiled: November 28, 2011Publication date: April 19, 2012Applicant: OILES CORPORATIONInventors: Akihiko OKIMURA, Yoshiteru Igarashi, Naohiro Horita
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Publication number: 20120073921Abstract: A friction damper includes: a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening device provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: ApplicationFiled: September 26, 2011Publication date: March 29, 2012Applicant: OILES CORPORATIONInventors: Akihiko OKIMURA, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai, Youko Arai
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Patent number: 8117716Abstract: A one-way valve having a conduit for allowing liquid to flow therein, a valve element provided in the conduit, a hole portion provided in the conduit on the upstream side of the valve element and configured to be brought into a closed state by being closed by the valve element, and a spring that urges the valve element in the direction to close the hole portion, in which the peripheral surface of the valve element is formed with a first surface and a second surface intersecting the direction of movement of the valve element and generating a component force in the direction to close the hole portion when an urging force of the spring is applied, the first surface and the second surface are formed so as to increase the component force in the direction to close the hole portion as the valve element approaches the hole.Type: GrantFiled: June 5, 2007Date of Patent: February 21, 2012Assignees: Shiroki Kogyo Co., Ltd., Oiles CorporationInventors: Kenji Yamamoto, Yoshiteru Igarashi, Akihiko Okimura
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Publication number: 20120018934Abstract: A damper is provided which damps an applied external force in accordance with the strength of the external force (impact strength). The damper 10 comprises a vessel 20 having a cylindrical chamber 21 filled with a viscous fluid, a turn member 60 turned by the external force, a slider member 40 which is moved in the chamber 21 of the vessel 20 by turn of the turn member 60, partition member 80 engaged with the slider member 40, a coiled spring 100 for energizing the slider member 40 toward the turn member 60, and a resin cap 100 blocking an opening of the vessel 20.Type: ApplicationFiled: September 19, 2011Publication date: January 26, 2012Applicant: OILES CORPORATIONInventors: Yoshiteru IGARASHI, Akihiko OKIMURA
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Publication number: 20110226573Abstract: A rotary damper 1 includes a synthetic resin-made accommodating case 4 for accommodating in its interior 2 a viscous fluid 3 which is constituted by silicone oil or the like and whose viscosity declines with a temperature rise, and a synthetic resin-made rotor 9 which is disposed in the interior 2 of the accommodating case 4 rotatably, i.e., so as to be rotatable in R1 and R2 directions about an axis O, and which partitions the interior 2 of the accommodating case 4 into at least two chambers, i.e., in this embodiment, two chambers consisting of chambers 5 and 6 and two chambers consisting of chambers 7 and 8, in cooperation with the accommodating case 4.Type: ApplicationFiled: November 18, 2009Publication date: September 22, 2011Inventors: Masamitsu Kojima, Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
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Publication number: 20110121622Abstract: A damper 1 includes a vessel 4 for accommodating a viscous fluid 3 in its interior 2; hampering walls 5 and 6 for hampering the flow of the viscous fluid 3; a partitioning member 11 which partitions each of interior portions 7 and 8 into two chambers 9 and 10 and is provided rotatably; a communicating hole 13 formed in the partitioning member 11 so as to allow the two chambers 9 and 10 to communicate with each other via a variable passage 12 whose passage cross-sectional area changes; a flow limiting means 14 for limiting the flow of the viscous fluid 3 in the chamber 9 into the chamber 10 through the communicating hole 13, when the internal pressure of the viscous fluid 3 accommodated in the chamber 9 has exceeded a fixed value on the basis of the rotation of the partitioning member 11; and a resilient means 15 for resiliently urging the partitioning member 11 in an R2 direction with respect to the vessel 4.Type: ApplicationFiled: April 20, 2009Publication date: May 26, 2011Inventors: Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
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Publication number: 20100164262Abstract: A damper 1 includes a vessel 2; a partitioning member 6 which partitions the interior of the vessel 2 into two accommodation chambers 4 and 5 for accommodating a viscous fluid 3, and which rotates together with the vessel 2 in an R direction and is movable in an axial direction A; a moving force imparting means 7 for imparting to the partitioning member 6 a moving force in an A1 direction by the input of rotation in an R1 direction; a resilient means 8 for resiliently urging the partitioning member 6 in an A2 direction; a through hole 9 for allowing the two accommodation chambers 4 and 5 inside the vessel 2 to communicate with each other; and an allowing/limiting member 10 which allows the viscous fluid 3 accommodated in the two accommodation chambers 4 and 5 in the vessel 2 to flow reciprocally between the two accommodation chambers 4 and 5 through the through hole 9, and which limits the flow of the viscous fluid 3 in the accommodation chamber 4 into the accommodation chamber 5 in the A2 direction through tType: ApplicationFiled: April 25, 2008Publication date: July 1, 2010Inventors: Akihiko Okimura, Naohiro Horita, Yoshiteru Igarashi
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Publication number: 20100117409Abstract: A damper is provided which damps an applied external force in accordance with the strength of the external force (impact strength). The damper 10 comprises a vessel 20 having a cylindrical chamber 21 filled with a viscous fluid, a turn member 60 turned by the external force, a slider member 40 which is moved in the chamber 21 of the vessel 20 by turn of the turn member 60, partition member 80 engaged with the slider member 40, a coiled spring 100 for energizing the slider member 40 toward the turn member 60, and a resin cap 100 blocking an opening of the vessel 20.Type: ApplicationFiled: October 18, 2007Publication date: May 13, 2010Applicant: OILES CORPORATIONInventors: Yoshiteru IGARASHI, Akihiko OKIMURA
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Publication number: 20090261634Abstract: A damper 1 includes a vessel 2; a partitioning member 6 which partitions an internal space of the vessel 2 into two accommodation chambers 4 and 5 for accommodating a viscous fluid 3 and which is movable with respect to the vessel 2; a moving force imparting device 7 for imparting to the partitioning member 6 a moving force in an A1 direction by the input of rotation in an R2 direction with respect to the vessel 2, so that the moving velocity is set to one corresponding to the rotating velocity of that input of rotation; a resilient device 8 for resiliently urging the partitioning member 6 in an A2 direction; a communicating hole 9 formed in the partitioning member 6; and a flow limiting device 10 for limiting the flow of the viscous fluid 3 in the accommodating chamber 4 into the accommodating chamber 5 through the communicating hole 9 when the internal pressure of the viscous fluid 3 accommodated in the accommodating chamber 4 has exceeded a fixed value.Type: ApplicationFiled: April 27, 2009Publication date: October 22, 2009Applicant: OILES CORPORATIONInventors: Akihiko Okimura, Yoshiteru Igarashi, Naohiro Horita
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Publication number: 20090193617Abstract: [Object] To provide a one-way valve and a door check apparatus which is compact and includes a small number of components.Type: ApplicationFiled: June 5, 2007Publication date: August 6, 2009Inventors: Kenji Yamamoto, Yoshiteru Igarashi, Akihiko Okimura
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Patent number: 7322451Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: GrantFiled: January 15, 2003Date of Patent: January 29, 2008Assignee: Oiles CorporationInventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai
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Publication number: 20070289828Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: ApplicationFiled: August 8, 2007Publication date: December 20, 2007Applicant: OILES CORPORATIONInventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Yoshikazu Arai, Youko Arai
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Publication number: 20050087414Abstract: A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axial direction with respect to the support; a friction member which has a hollow cylindrical portion interposed between the support and a main body portion of the rod in the through hole of the support, and which is fixed immovably with respect to the relative movement of the rod in the axial direction with respect to the base body; and a tightening structure provided for the support so as to tighten the hollow cylindrical portion of the friction member onto the main body portion of the rod.Type: ApplicationFiled: January 15, 2003Publication date: April 28, 2005Inventors: Akihiko Okimura, Kazuhiro Nagashima, Go Tanaka, Youko Arai
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Patent number: 5732322Abstract: The disclosure describes a resin composition for a sliding member, comprising 1 to 25 wt % of component A selected from the group consisting of phosphates and barium sulfate, 1 to 15 wt % of component B selected from the group consisting of magnesium silicate and mica, and 5 to 50 wt % of component C selected from the group consisting of lead, tin, lead-tin alloy and mixtures thereof, the balance of polytetrafluoroethylene.Type: GrantFiled: May 22, 1995Date of Patent: March 24, 1998Assignee: Oiles CorporationInventors: Takashi Nakamaru, Sumihide Yanase, Akihiko Okimura
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Patent number: 5624887Abstract: Multilayered sliding members made of a lubricating composition containing polytetrafluoroethylene and 1 to 40 wt % of zinc oxide whiskers as a filler; and a porous sintered metal layer formed on a steel backing are disclosed, in which the lubricating composition is impregnated in and coated on the porous sintered metal layer.Type: GrantFiled: January 30, 1995Date of Patent: April 29, 1997Assignee: Oiles CorporationInventors: Takashi Nakamaru, Tadashi Watai, Akihiko Okimura, Sumihide Yanase
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Patent number: 5616406Abstract: The disclosure describes sliding member comprising a metal mesh and a resin composition is filled and covered in the mesh and on the surface of the metal mesh, wherein the resin composition comprises 5 to 30% by weight of at least one reinforcing filler selected from the group consisting of glass fibers and wollastonite, 1 to 15% by weight of at least one phosphate selected from the group consisting of calcium pyrophosphate and calcium hydrogen phosphate, 1 to 20% by weight of barium sulfate and the balance of polytetrafluoroethylene,the total content of the reinforcing filler, phosphate and barium sulfate being not more than 60% by weight.Type: GrantFiled: August 18, 1995Date of Patent: April 1, 1997Assignee: Oiles CorporationInventors: Takashi Nakamaru, Sumihide Yanase, Akihiko Okimura