Patents by Inventor Katsuo Uematsu
Katsuo Uematsu 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: 7234483Abstract: An electro-pneumatic air pressure regulator includes a primary pressure introduction port, a secondary pressure output port, a pilot pressure chamber, a main valve for opening and closing a communicating conduit, a floating piston which actuates the main valve, a nozzle conduit via which the pilot pressure chamber is communicatively connected to the atmosphere, a flapper which includes a leaf spring facing an open end of the nozzle conduit, and an electromagnetic drive system which deforms the leaf spring to vary a position of the flapper relative to the open end of the nozzle conduit in accordance with the magnitude of an analogue input signal. The flapper includes a conical projection which projects toward the open end of the nozzle conduit. A conical recess corresponding to the conical projection is formed on an end face of the nozzle conduit around the open end thereof.Type: GrantFiled: June 2, 2004Date of Patent: June 26, 2007Assignee: Fujikura Rubber Ltd.Inventors: Masakuni Kainuma, Toshikazu Aoki, Keiji Tamaki, Katsuo Uematsu, Tomomasa Fujita, Hiroshi Chinda, Akihiro Hayashi, Mitsuaki Nakanishi
-
Patent number: 6935603Abstract: A vibration isolation table includes a stationary housing having an opening on a top surface thereof; a primary movable base which is supported by the stationary housing, and includes a bottomed hollow cylindrical portion which extends downwards into the stationary housing, and a flange portion which projects radially outwards from an upper end of the bottomed hollow cylindrical portion; a pressure chamber formed between the flange portion and the top surface of the stationary housing; and a vibration-free movable base on which an object to be isolated from vibration is mounted, the vibration-free movable base having a swingable rod which is inserted into the bottomed hollow cylindrical portion so that a bottom end of the swingable rod is supported by a base of the bottomed hollow cylindrical portion in a manner to allow the swingable rod to swing with respect to the bottomed hollow cylindrical portion.Type: GrantFiled: November 25, 2003Date of Patent: August 30, 2005Assignee: Fujikura Rubber Ltd.Inventors: Masakuni Kainuma, Toshikazu Aoki, Keiji Tamaki, Katsuo Uematsu, Tomomasa Fujita, Hiroshi Chinda, Akihiro Hayashi
-
Patent number: 6877711Abstract: A vibration isolation table includes a stationary housing having an opening on top thereof; a pressure-tight flexible member which closes the opening to form a first pressure chamber in the stationary housing; a primary movable base which is coupled to a central portion of the pressure-tight flexible member, the primary movable base having a bottomed hollow cylindrical member; an intermediate movable base having a swingable rod which is inserted into the bottomed hollow cylindrical member so that a bottom end of the swingable rod is supported thereby to allow the swingable rod to swing with respect to the bottomed hollow cylindrical member; and a vibration-free base on which an object to be isolated from vibration is mounted, a second pressure chamber being formed between the intermediate movable base and the vibration-free base, the second pressure chamber being capable of expanding and contracting vertically.Type: GrantFiled: November 26, 2003Date of Patent: April 12, 2005Assignee: Fujikura Rubber Ltd.Inventors: Masakuni Kainuma, Toshikazu Aoki, Keiji Tamaki, Katsuo Uematsu, Tomomasa Fujita, Hiroshi Chinda, Akihiro Hayashi
-
Publication number: 20040244834Abstract: An electro-pneumatic air pressure regulator includes a primary pressure introduction port, a secondary pressure output port, a pilot pressure chamber, a main valve for opening and closing a communicating conduit, a floating piston which actuates the main valve, a nozzle conduit via which the pilot pressure chamber is communicatively connected to the atmosphere, a flapper which includes a leaf spring facing an open end of the nozzle conduit, and an electromagnetic drive system which deforms the leaf spring to vary a position of the flapper relative to the open end of the nozzle conduit in accordance with the magnitude of an analogue input signal. The flapper includes a conical projection which projects toward the open end of the nozzle conduit. A conical recess corresponding to the conical projection is formed on an end face of the nozzle conduit around the open end thereof.Type: ApplicationFiled: June 2, 2004Publication date: December 9, 2004Applicant: Fujikura Rubber Ltd.Inventors: Masakuni Kainuma, Toshikazu Aoki, Keiji Tamaki, Katsuo Uematsu, Tomomasa Fujita, Hiroshi Chinda, Akihiro Hayashi, Mitsuaki Nakanishi
-
Publication number: 20040104329Abstract: A vibration isolation table includes a stationary housing having an opening on a top surface thereof; a primary movable base which is supported by the stationary housing, and includes a bottomed hollow cylindrical portion which extends downwards into the stationary housing, and a flange portion which projects radially outwards from an upper end of the bottomed hollow cylindrical portion; a pressure chamber formed between the flange portion and the top surface of the stationary housing; and a vibration-free movable base on which an object to be isolated from vibration is mounted, the vibration-free movable base having a swingable rod which is inserted into the bottomed hollow cylindrical portion so that a bottom end of the swingable rod is supported by a base of the bottomed hollow cylindrical portion in a manner to allow the swingable rod to swing with respect to the bottomed hollow cylindrical portion.Type: ApplicationFiled: November 25, 2003Publication date: June 3, 2004Applicant: Fujikura Rubber Ltd.Inventors: Masakuni Kainuma, Toshikazu Aoki, Keiji Tamaki, Katsuo Uematsu, Tomomasa Fujita, Hiroshi Chinda, Akihiro Hayashi
-
Publication number: 20040104330Abstract: A vibration isolation table includes a stationary housing having an opening on top thereof; a pressure-tight flexible member which closes the opening to form a first pressure chamber in the stationary housing; a primary movable base which is coupled to a central portion of the pressure-tight flexible member, the primary movable base having a bottomed hollow cylindrical member; an intermediate movable base having a swingable rod which is inserted into the bottomed hollow cylindrical member so that a bottom end of the swingable rod is supported thereby to allow the swingable rod to swing with respect to the bottomed hollow cylindrical member; and a vibration-free base on which an object to be isolated from vibration is mounted, a second pressure chamber being formed between the intermediate movable base and the vibration-free base, the second pressure chamber being capable of expanding and contracting vertically.Type: ApplicationFiled: November 26, 2003Publication date: June 3, 2004Applicant: Fujikura Rubber Ltd.Inventors: Masakuni Kainuma, Toshikazu Aoki, Keiji Tamaki, Katsuo Uematsu, Tomomasa Fujita, Hiroshi Chinda, Akihiro Hayashi