Patents by Inventor Bunta NARUKAWA
Bunta NARUKAWA 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).
-
Patent number: 10591077Abstract: The invention provides a control valve which makes the downsizing and the weight reduction possible and a method of manufacturing the same. The control valve is provided with a valve main body in which a valve chamber is formed in its inner portion, a connection member which is firmly fixed to the valve main body, and a can which is firmly fixed to the valve main body. The valve main body and the can include the same metal material. The connection member is made of a resin. The connection member is provided with a fastening portion for connecting piping parts.Type: GrantFiled: April 5, 2018Date of Patent: March 17, 2020Assignee: FUJIKOKI CORPORATIONInventor: Bunta Narukawa
-
Patent number: 10352475Abstract: The invention provides an electrically operated valve which can more accurately detect a position of a valve body. An electrically operated valve is provided with a valve shaft, a valve body, a rotor member which is movable together with the valve shaft in a parallel direction to a first direction, a stator member which applies a turning force to the rotor member, a permanent magnet member which turns together with the rotor member, an angle sensor which detects an angle of rotation of the permanent magnet, and a guide member which guides a relative movement of the rotor member or the valve shaft in relation to the permanent magnet member. A distance between the permanent magnet and the angle sensor is fixed when the permanent magnet member turns.Type: GrantFiled: April 5, 2018Date of Patent: July 16, 2019Assignee: FUJIKOKI CORPORATIONInventors: Satoshi Uehara, Bunta Narukawa
-
Patent number: 10330214Abstract: [Object] Provided is a control valve capable of ensuring controllability in both flows without increasing the number of parts. [Solving Means] A plurality of differential pressure valves 50, 60, 70, and 80 are disposed inside a valve body 10 so that a fluid pressure acting on a main valve body 20 disposed inside a main valve chamber 13 becomes the same in a flow of both directions including one direction from a first inlet/outlet 11 to a second inlet/outlet 12 through the main valve chamber 13 and the other direction from the second inlet/outlet 12 to the first inlet/outlet 11 through the main valve chamber 13.Type: GrantFiled: August 29, 2017Date of Patent: June 25, 2019Assignee: FUJIKOKI CORPORATIONInventor: Bunta Narukawa
-
Publication number: 20180299029Abstract: The invention provides an electrically operated valve which can more accurately detect a position of a valve body. An electrically operated valve is provided with a valve shaft, a valve body, a rotor member which is movable together with the valve shaft in a parallel direction to a first direction, a stator member which applies a turning force to the rotor member, a permanent magnet member which turns together with the rotor member, an angle sensor which detects an angle of rotation of the permanent magnet, and a guide member which guides a relative movement of the rotor member or the valve shaft in relation to the permanent magnet member. A distance between the permanent magnet and the angle sensor is fixed when the permanent magnet member turns.Type: ApplicationFiled: April 5, 2018Publication date: October 18, 2018Inventors: Satoshi UEHARA, Bunta NARUKAWA
-
Publication number: 20180299021Abstract: The invention provides a control valve which makes the downsizing and the weight reduction possible and a method of manufacturing the same. The control valve is provided with a valve main body in which a valve chamber is formed in its inner portion, a connection member which is firmly fixed to the valve main body, and a can which is firmly fixed to the valve main body. The valve main body and the can include the same metal material. The connection member is made of a resin. The connection member is provided with a fastening portion for connecting piping parts.Type: ApplicationFiled: April 5, 2018Publication date: October 18, 2018Inventor: Bunta NARUKAWA
-
Publication number: 20180066765Abstract: [Object] Provided is a control valve capable of ensuring controllability in both flows without increasing the number of parts. [Solving Means] A plurality of differential pressure valves 50, 60, 70, and 80 are disposed inside a valve body 10 so that a fluid pressure acting on a main valve body 20 disposed inside a main valve chamber 13 becomes the same in a flow of both directions including one direction from a first inlet/outlet 11 to a second inlet/outlet 12 through the main valve chamber 13 and the other direction from the second inlet/outlet 12 to the first inlet/outlet 11 through the main valve chamber 13.Type: ApplicationFiled: August 29, 2017Publication date: March 8, 2018Inventor: Bunta NARUKAWA
-
Patent number: 9121522Abstract: The invention provides an electrically operated valve which can control a flow rate precisely at a small flow rate distributing time and can circulate a fluid so as to prevent a pressure loss as much as possible at a large flow rate distributing time without an increase of a working and assembling cost. A movable valve seat body forming a main valve port for forming a small flow rate flow path extending from a first inlet and outlet to a second inlet and outlet is arranged between a valve chamber and a lower chamber. The movable valve seat body is structured such that its lower portion is slidably fitted and inserted to the lower chamber, and such as to serve as a float type check valve body for opening and blocking a large flow rate flow path extending from the second inlet and outlet to the first inlet and outlet.Type: GrantFiled: May 10, 2013Date of Patent: September 1, 2015Assignee: FUJIKOKI CORPORATIONInventors: Takao Harada, Masaya Satou, Masaharu Itoh, Bunta Narukawa
-
Publication number: 20130306176Abstract: The invention provides an electrically operated valve which can control a flow rate precisely at a small flow rate distributing time and can circulate a fluid so as to prevent a pressure loss as much as possible at a large flow rate distributing time without an increase of a working and assembling cost. A movable valve seat body forming a main valve port for forming a small flow rate flow path extending from a first inlet and outlet to a second inlet and outlet is arranged between a valve chamber and a lower chamber. The movable valve seat body is structured such that its lower portion is slidably fitted and inserted to the lower chamber, and such as to serve as a float type check valve body for opening and blocking a large flow rate flow path extending from the second inlet and outlet to the first inlet and outlet.Type: ApplicationFiled: May 10, 2013Publication date: November 21, 2013Applicant: FUJIKOKI CORPORATIONInventors: Takao HARADA, Masaya SATOU, Masaharu ITOH, Bunta NARUKAWA
-
Patent number: D850583Type: GrantFiled: July 5, 2017Date of Patent: June 4, 2019Assignee: FUJIKOKI CORPORATIONInventors: Satoshi Uehara, Yu Ando, Bunta Narukawa
-
Patent number: D886950Type: GrantFiled: June 18, 2018Date of Patent: June 9, 2020Assignee: FUJIKOKI CORPORATIONInventors: Satoshi Uehara, Yusuke Arai, Takeshi Hosoya, Bunta Narukawa