Patents by Inventor Hajime Takemura
Hajime Takemura 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: 8113403Abstract: In a gas internal combustion type nailing machine, a tubular-shaped sleeve is fixed between a movable housing and a fan. Between the movable housing and sleeve, an annular space portion is formed. In such portions of the sleeve as existing respectively upwardly and downwardly of the fan, there are formed communication holes and in communication with the annular space portion. Mixed gas blown out by the fan flows through the lower communication hole and returns from the annular space portion to the combustion chamber through the upper communication hole.Type: GrantFiled: March 28, 2008Date of Patent: February 14, 2012Assignee: Max Co., Ltd.Inventors: Hiroshi Tanaka, Hajime Takemura
-
Patent number: 8006880Abstract: A gas combustion type driving tool is provided with two modes including: a contact mode in which a contact arm 15 is pressed against a workpiece P into which a nail is to be driven and the nail is driven under a condition that a trigger lever 16 is pulled; and a trigger mode in which the trigger lever 16 is pulled and the nail is driven under a condition that the contact arm 15 is pressed against the workpiece P. In either mode, a nail driving can be continuously executed.Type: GrantFiled: December 4, 2007Date of Patent: August 30, 2011Assignee: Max Co., LtdInventors: Hiroshi Tanaka, Hajime Takemura, Junichi Tamura, Katsuhiko Murayama
-
Publication number: 20100294824Abstract: A hand-held tool, in which multiple fasteners are successively fed, is provided with: an ejection detecting portion for detecting an ejection of the fasteners; and a control portion for switching from a power saving wait mode of small power consumption to an active mode capable of executing normal processing when the ejection detecting portion detects the ejection of the fasteners, and for switching from the active mode to the wait mode when the normal processing is ended.Type: ApplicationFiled: February 5, 2009Publication date: November 25, 2010Inventors: Hajime Takemura, Hiroshi Tanaka, Shuichi Ishii, Kazuya Takeuchi
-
Publication number: 20100108735Abstract: In a gas internal combustion type nailing machine, a tubular-shaped sleeve 33 is fixed between a movable housing 31 and a fan 7. Between the movable housing 31 and sleeve 33, an annular space portion S is formed. In such portions of the sleeve 33 as existing respectively upwardly and downwardly of the fan 7, there are formed communication holes 33a and 33b in communication with the annular space portion S. Mixed gas blown out by the fan 7 flows through the lower communication hole 33b and returns from the annular space portion S to the combustion chamber 3 through the upper communication hole 33a.Type: ApplicationFiled: March 28, 2008Publication date: May 6, 2010Applicant: MAX CO., LTD.Inventors: Hiroshi Tanaka, Hajime Takemura
-
Patent number: 7686197Abstract: In a gas combustion type striking tool which strikes a fastener supplied in a nose portion into a member to be fastened by burning mixed gas inside a combustion chamber above a striking cylinder in accordance with a pulling operation of a trigger lever to drive a striking piston and a driver by a pressure of the combustion gas thus generated, a topper is disposed so as to be able to protrude into a path of a feed pawl or a feed piston, and a stopper engaging member, which extends downward from the striking cylinder and is movable in a vertical direction, engages with the stopper when the stopper engaging member moves downward, thereby retracting the stopper from the path.Type: GrantFiled: May 17, 2006Date of Patent: March 30, 2010Assignee: Max, Co., Ltd.Inventors: Makoto Kosuge, Hajime Takemura, Junichi Tamura, Katsuhiko Murayama
-
Publication number: 20100032467Abstract: A gas combustion type driving tool is provided with two modes including: a contact mode in which a contact arm 15 is pressed against a workpiece P into which a nail is to be driven and the nail is driven under a condition that a trigger lever 16 is pulled; and a trigger mode in which the trigger lever 16 is pulled and the nail is driven under a condition that the contact arm 15 is pressed against the workpiece P. In either mode, a nail driving can be continuously executed.Type: ApplicationFiled: December 4, 2007Publication date: February 11, 2010Applicant: Max Co., Ltd.Inventors: Hiroshi Tanaka, Hajime Takemura, Junichi Tamura, Katsuhiko Murayama
-
Patent number: 7556182Abstract: In a gas combustion type driving tool, on a feed cylinder 21 included in a feed piston/cylinder device 7, there is provided a spring for normally urging a feed piston 22 in a feed direction. A portion of the feed cylinder 21 opposite to the spring is connected to a combustion chamber 5 through a gas conduit 26. In an intermediate portion of the gas conduit 26, there is provided a delay piston/cylinder device A. One end of a delay cylinder 27 is disposed on the combustion chamber 5 side, while the other end thereof is disposed on the feed cylinder 21 side. When a delay piston 28 is slidingly moved from one end of the delay cylinder 27 to the other end thereof by the pressure of combustion gas, air compressed within the delay cylinder 27 is supplied from the other end of the delay cylinder 27 to the feed cylinder 21.Type: GrantFiled: April 28, 2006Date of Patent: July 7, 2009Assignee: Max Co., Ltd.Inventors: Katsuhiko Murayama, Hajime Takemura, Junichi Tamura
-
Publication number: 20090071999Abstract: By moving a movable sleeve 10 provided above a driving cylinder 3 in a vertical direction so as to come into contact with a cylinder head 8 above the driving cylinder 3, a combustion chamber 6 becomes a closed state. When mixed gas obtained by stirring and mixing air and fuel gas by a rotary fan 21 is ignited by a spark plug 20 so as to be burned explosively in the combustion chamber 6, high-pressure combustion gas is applied to a driving piston 4 to impulsively drive the driving piston 4 so that a driver 5 coupled to a lower surface of the driving piston 4 drives a fastener. An upper wall surface on an outer portion of the combustion chamber 6 is disposed at a position far away from the spark plug 20 so that a flow speed of the mixed gas passing the upper wall surface decreases to the extent that an ignition when the mixed gas arrives at the spark plug 20 is not interrupted. An opening groove 22 is formed in the upper wall surface so as to be opened to the combustion chamber 6.Type: ApplicationFiled: March 7, 2007Publication date: March 19, 2009Applicant: Max Co., Ltd.Inventors: Junichi Tamura, Katsuhiko Murayama, Hajime Takemura, Masakazu Konishi
-
Publication number: 20090057365Abstract: In a gas combustion type driving tool, on a feed cylinder 21 included in a feed piston/cylinder device 7, there is provided a spring for normally urging a feed piston 22 in a feed direction. A portion of the feed cylinder 21 opposite to the spring is connected to a combustion chamber 5 through a gas conduit 26. In an intermediate portion of the gas conduit 26, there is provided a delay piston/cylinder device A. One end of a delay cylinder 27 is disposed on the combustion chamber 5 side, while the other end thereof is disposed on the feed cylinder 21 side. When a delay piston 28 is slidingly moved from one end of the delay cylinder 27 to the other end thereof by the pressure of combustion gas, air compressed within the delay cylinder 27 is supplied from the other end of the delay cylinder 27 to the feed cylinder 21.Type: ApplicationFiled: April 28, 2006Publication date: March 5, 2009Inventors: Katsuhiko Murayama, Hajime Takemura, Junichi Tamura
-
Patent number: 7499038Abstract: In an analog resistive-film touch panel, a lower electrode member has a transparent electrode on a top face of a transparent insulating base member, a pair of bus bars on parallel sides of the transparent electrode, and routing circuits connected to the bus bars for external connection on a portion other than the transparent electrode. Further, an upper electrode member has a transparent electrode on a bottom face of a flexible transparent insulating base, a pair of bus bars on parallel sides of the transparent electrode, and routing circuits connected to the bus bars for external connection on a portion other than the transparent electrode. The lower and upper electrode members face each other in a square pattern via an insulative spacer and are bonded at peripheral portions. The bus bars and the routing circuits are formed from metal thin wires with a diameter of 30 to 100 ?m.Type: GrantFiled: December 10, 2003Date of Patent: March 3, 2009Assignee: Nissha Printing Co., Ltd.Inventors: Kazuhiro Nishikawa, Kazuhiko Takahata, Hajime Takemura, Takeshi Asakura, Kazuo Terasawa, Hideki Murakami
-
Publication number: 20090032564Abstract: A front portion of a feed cylinder of a feed piston-cylinder mechanism is communicated with a combustion chamber, and a rear portion of the feed cylinder is sealed. A check valve and a spring which constantly biases a feed piston toward a nail feed direction in the forward direction are provided. An opening valve communicating with the rear portion of the feed cylinder is provided. The opening valve is opened after or just before a completion of a returning operation of a striking piston.Type: ApplicationFiled: May 17, 2006Publication date: February 5, 2009Inventors: Hajime Takemura, Junichi Tamura, Keijiro Murayama, Katsuhiko Murayama
-
Publication number: 20080314952Abstract: A gas nailer is provided with a driving cylinder 7, a driving piston 10, a combustion chamber 8, a gas fuel cartridge 2, and a supercharging device 3. The driving piston 10 is operated in the driving cylinder 7 by a combustion pressure generated when a mixture of gas fuel and air is burned in the combustion chamber 8, and a driver hammers a fastener by an operation of the driving piston. A locking device 15 for locking the driving piston 10 is provided in the driving cylinder 7 so as not to move the driving piston 10 in accordance with a pressure increase in the combustion chamber 8 during a supercharging operation in which compressed air is supplied by the supercharging device 3.Type: ApplicationFiled: February 20, 2007Publication date: December 25, 2008Inventors: Junichi Tamura, Hajime Takemura, Katsuhiko Murayama
-
Publication number: 20080314951Abstract: In a gas combustion type striking tool which strikes a fastener supplied in a nose portion into a member to be fastened by burning mixed gas inside a combustion chamber above a striking cylinder in accordance with a pulling operation of a trigger lever to drive a striking piston and a driver by a pressure of the combustion gas thus generated, a topper is disposed so as to be able to protrude into a path of a feed pawl or a feed piston, and a stopper engaging member, which extends downward from the striking cylinder and is movable in a vertical direction, engages with the stopper when the stopper engaging member moves downward, thereby retracting the stopper from the path.Type: ApplicationFiled: May 17, 2006Publication date: December 25, 2008Inventors: Makoto Kosuge, Hajime Takemura, Junichi Tamura, Katsuhiko Murayama
-
Publication number: 20060132465Abstract: In an analog resistive-film type touch panel, a lower-side electrode member having a transparent electrode on a part of a top face of a transparent insulating base member, a pair of bus bars on two parallel sides of the transparent electrode, and routing circuits connected to the bus bars for external terminal connection on a portion other than the transparent electrode, and an upper-side electrode member having a transparent electrode on a part of a bottom face of a transparent insulating base member having flexibility, a pair of bus bars on two parallel sides of the transparent electrode, and routing circuits connected to the bus bars for external terminal connection on a portion other than the transparent electrode are disposed facing each other in a square pattern via an insulative spacer and are bonded at peripheral portions, in which the bus bars and the routing circuits are respectively formed from metal thin wires with a diameter of 30 to 100 ?m.Type: ApplicationFiled: December 10, 2003Publication date: June 22, 2006Inventors: Kazuhiro Nishikawa, Kazuhiko Takahata, Hajime Takemura, Tsuyoshi Asakura, Kazuo Terasawa, Hideki Murakami
-
Patent number: 6883542Abstract: A socket portion (11) capable of mounting either of a high pressure exclusive plug and a normal pressure exclusive plug is formed at one end of a coupler (6). In the coupler (6), an opening/closing valve (18) for opening and closing a flow path of a compressed air is provided, and a pressure reducing valve for reducing an air pressure to a predetermined pressure value proximate to substantially an upper limit value of an operating pressure region of a normal pressure tool by controlling the opening/closing valve (18) is formed. Thereby, when the normal pressure exclusive plug (P1) is mounted, air the pressure of which is reduced by the pressure reducing valve is supplied to the normal pressure exclusive plug (P1).Type: GrantFiled: September 20, 2002Date of Patent: April 26, 2005Assignee: Max Co., Ltd.Inventors: Kazuhiko Kuraguchi, Hajime Takemura, Masatoshi Asai
-
Patent number: 6834666Abstract: The invention provides an apparatus for outputting compressed air in a compressor to a plurality of pneumatic tools at a plurality of pressures. The apparatus includes: an air tank storing compressed air compressed by the compressor at a high pressure; a pressure adjusting portion connected to said air tank and adjusting a pressure value of the compressed air in a region from the high pressure to zero; a pressure outputting portion connected to a secondary side of said pressure adjusting portion and outputting the adjusted compressed air to at least one of a first pneumatic tool driven at a first pressure and a second pneumatic tool driven at a second pressure. The first pressure is larger than the second pressure, and the adjusted compressed air is not output to the second pneumatic tool at the first pressure.Type: GrantFiled: March 7, 2002Date of Patent: December 28, 2004Assignee: Max Co., Ltd.Inventors: Keijiro Murayama, Katsuhiko Murayama, Hiroshi Hanagasaki, Kazuhiko Kuraguchi, Hajime Takemura
-
Publication number: 20040238047Abstract: A socket portion (11) capable of mounting either of a high pressure exclusive plug and a normal pressure exclusive plug is formed at one end of a coupler (6). In the coupler (6), an opening/closing valve (18) for opening and closing a flow path of a compressed air is provided, and a pressure reducing valve for reducing an air pressure to a predetermined pressure value proximate to substantially an upper limit value of an operating pressure region of a normal pressure tool by controlling the opening/closing valve (18) is formed. Thereby, when the normal pressure exclusive plug (P1) is mounted, air the pressure of which is reduced by the pressure reducing valve is supplied to the normal pressure exclusive plug (P1).Type: ApplicationFiled: March 19, 2004Publication date: December 2, 2004Inventors: Kazuhiko Kuraguchi, Hajime Takemura, Masatoshi Asai
-
Publication number: 20020177952Abstract: A GPS apparatus measures each pseudo-range ri from respective one of received radio waves from n GPS satellites (200i) captured by a GPS receiver (18) and approximately calculates a clock error t and coordinates (x, y, z) of the GPS receiver as a solution of n simultaneous equations by performing a convergence calculation with respect to n functions having such variables as the clock error t and the coordinates (x, y, z) of the GPS receiver. If a generation of a multi-path is detected, it approximately calculates the clock error t and the coordinates as a solution of n+1 simultaneous equations by performing a convergence calculation with respect to total n+1 functions obtained by adding one &agr; fn+1 to the n functions, where &agr;fn+1 is obtained by applying a weighting &agr; to one function fn+1 having such variables as the clock error and the coordinates.Type: ApplicationFiled: May 6, 2002Publication date: November 28, 2002Applicant: PIONEER CORPORATIONInventor: Hajime Takemura
-
Patent number: 6484098Abstract: A GPS apparatus measures each pseudo-range ri from respective one of received radio waves from n GPS satellites (200i) captured by a GPS receiver (18) and approximately calculates a clock error t and coordinates (x, y, z) of the GPS receiver as a solution of n simultaneous equations by performing a convergence calculation with respect to n functions having such variables as the clock error t and the coordinates (x, y, z) of the GPS receiver. If a generation of a multi-path is detected, it approximately calculates the clock error t and the coordinates as a solution of n+1 simultaneous equations by performing a convergence calculation with respect to total n+1 functions obtained by adding one &agr; fn+1 to the n functions, where &agr; fn+1 is obtained by applying a weighting &agr; to one function fn+1 having such variables as the clock error and the coordinates.Type: GrantFiled: May 6, 2002Date of Patent: November 19, 2002Assignee: Pioneer CorporationInventor: Hajime Takemura
-
Publication number: 20020124890Abstract: The invention provides an apparatus for outputting compressed air in a compressor to a plurality of pneumatic tools at a plurality of pressures. The apparatus includes: an air tank storing compressed air compressed by the compressor at a high pressure; a pressure adjusting portion connected to said air tank and adjusting a pressure value of the compressed air in a region from the high pressure to zero; a pressure outputting portion connected to a secondary side of said pressure adjusting portion and outputting the adjusted compressed air to at least one of a first pneumatic tool driven at a first pressure and a second pneumatic tool driven at a second pressure. The first pressure is larger than the second pressure, and the adjusted compressed air is not output to the second pneumatic tool at the first pressure.Type: ApplicationFiled: March 7, 2002Publication date: September 12, 2002Applicant: Max Co., Ltd.Inventors: Keijiro Murayama, Katsuhiko Murayama, Hiroshi Hanagasaki, Kazuhiko Kuraguchi, Hajime Takemura