Abstract: A capacitive sensor device for use with a steering wheel is provided. The steering wheel includes a rim and a spoke that is connected to the inner side of the rim, and the sensor device is provided on the spoke. The sensor device includes an electrode configured to be capacitively coupleable to an object to be detected, and includes a controller configured to detect a change in capacitance of the electrode, and determine whether the object is in proximity to the rim or the spoke based on the change in the capacitance of the electrode. The change in the capacitance occurs in response to the object being in proximity to the rim or the spoke.

Abstract: A switch device includes a substrate having one surface and another surface; a switch disposed on the one surface of the substrate and configured to be pressed; a first housing; a second housing; and a pin member. An internal space is formed by the first housing and the second housing, and the substrate is disposed in the internal space. The first housing has an opening through which at least a part of the pin member is inserted into the internal space. The second housing includes a support portion that supports the another surface of the substrate. When the pin member is inserted into the internal space through the opening, the pin member presses the support portion against the another surface of the substrate so as to cause the support portion to support the another surface of the substrate.

Abstract: A capacitive sensor device for use with a steering wheel is provided. The steering wheel includes a rim and a spoke that is connected to the inner side of the rim, and the sensor device is provided on the spoke. The sensor device includes an electrode configured to be capacitively coupleable to an object to be detected, and includes a controller configured to detect a change in capacitance of the electrode, and determine whether the object is in proximity to the rim or the spoke based on the change in the capacitance of the electrode. The change in the capacitance occurs in response to the object being in proximity to the rim or the spoke.

Abstract: A switch device includes a substrate having one surface and another surface; a switch disposed on the one surface of the substrate and configured to be pressed; a first housing; a second housing; and a pin member. An internal space is formed by the first housing and the second housing, and the substrate is disposed in the internal space. The first housing has an opening through which at least a part of the pin member is inserted into the internal space. The second housing includes a support portion that supports the another surface of the substrate. When the pin member is inserted into the internal space through the opening, the pin member presses the support portion against the another surface of the substrate so as to cause the support portion to support the another surface of the substrate.

Abstract: An input device includes: a switch unit that has a fixed contact and a movable contact placed so as to be movable away from and toward the fixed contact; a rubber member provided so as to be elastically deformable, the rubber member pressing the movable contact; and a slide member placed so as to be movable so that the slide member can press the rubber member. The rubber member has a first load generating part, which presses the movable contact, and a plurality of load adjusting parts disposed so as to enclose the first load generating part. The slide member has a first pressing part, which presses the first load generating part, and a plurality of second pressing parts, which press the plurality of load adjusting parts.

Abstract: An input device includes: a switch unit that has a fixed contact and a movable contact placed so as to be movable away from and toward the fixed contact; a rubber member provided so as to be elastically deformable, the rubber member pressing the movable contact; and a slide member placed so as to be movable so that the slide member can press the rubber member. The rubber member has a first load generating part, which presses the movable contact, and a plurality of load adjusting parts disposed so as to enclose the first load generating part. The slide member has a first pressing part, which presses the first load generating part, and a plurality of second pressing parts, which press the plurality of load adjusting parts.

Abstract: It is a problem of the present invention to provide a method of manufacturing the seamless pipes having better mechanical properties, by means of a pipe manufacturing method with large energy-saving effect to continuously carry out processes from pierce-rolling to heat treatment. A method of manufacturing a seamless pipe comprising the steps of a pierce-rolling process, elongation rolling process, sizing process, reheating process, quenching process and tempering process, wherein the sizing process is completed with a temperature of the seamless pipe not less than 600° C. but less than 800° C., the seamless pipe is charged into a reheating furnace with a temperature not less than 400° C. and is reheated with a temperature not less than Ac3 transformation temperature but not greater than 1000° C. in the reheating process.

Abstract: There is provided a foreign pipe or tube determining method capable of accurately determining a foreign pipe or tube. The foreign pipe or tube determining method in accordance with the present invention includes a step for determining the presence of a foreign pipe or tube by comparing the length of each pipe or tube in a size measuring step with the length of each pipe or tube measured in an actual weighing and length measuring step, which is associated with each pipe or tube in the size measuring step, a step for determining the presence of a foreign pipe or tube by comparing the weight of each pipe or tube calculated in a weight calculating step with the weight of each pipe or tube measured in the actual weighing and length measuring step, which is associated with each pipe or tube in a weight calculating step, and a step for determining the presence of a foreign pipe or tube based on the material of each pipe or tube determined in a material determining step.

Abstract: In straightening a duplex stainless steel pipe on a multi-roll pipe straightener, the value of A defined by the formula (1) is set to not more than 2.0% when it is not necessary to improve the mechanical strength of the pipe, and the value of A is set to more than 2.0% but not more than 3% when it is necessary to improve the mechanical strength of the pipe. Thereby, the mechanical strength of the duplex stainless steel pipe is regulated, A=(Di?Hi)/Di??(1) where each of the symbols in the formula (1) indicates the following: Di: the outer diameter (mm) of the pipe at an entry side of an i-th stand in the straightener, and Hi: the gap (mm) between groove bottom portions of the rolls at an i-th stand in the straightener.

Abstract: There is provided a foreign pipe or tube determining method capable of accurately determining a foreign pipe or tube. The foreign pipe or tube determining method in accordance with the present invention includes a step for determining the presence of a foreign pipe or tube by comparing the length of each pipe or tube in a size measuring step with the length of each pipe or tube measured in an actual weighing and length measuring step, which is associated with each pipe or tube in the size measuring step, a step for determining the presence of a foreign pipe or tube by comparing the weight of each pipe or tube calculated in a weight calculating step with the weight of each pipe or tube measured in the actual weighing and length measuring step, which is associated with each pipe or tube in a weight calculating step, and a step for determining the presence of a foreign pipe or tube based on the material of each pipe or tube determined in a material determining step.

Abstract: In straightening a duplex stainless steel pipe on a multi-roll pipe straightener, the value of A defined by the formula (1) is set to not more than 2.0% when it is not necessary to improve the mechanical strength of the pipe, and the value of A is set to more than 2.0% but not more than 3% when it is necessary to improve the mechanical strength of the pipe. Thereby, the mechanical strength of the duplex stainless steel pipe is regulated, A=(Di?Hi)/Di??(1) where each of the symbols in the formula (1) indicates the following: Di: the outer diameter (mm) of the pipe at an entry side of an i-th stand in the straightener, and Hi: the gap (mm) between groove bottom portions of the rolls at an i-th stand in the straightener.

Abstract: A method of cooling a steel pipe which can effectively suppress quenching-induced bending which occurs when quenching a thin-walled steel pipe with a wall thickness/outer diameter ratio of at most 0.07 without decreasing the manufacturing efficiency of the steel pipe comprises cooling the inner surface of the steel pipe by spraying cooling water into the interior of a horizontally-disposed steel pipe 2 while rotating the pipe in its circumferential direction, and the outer surface is cooled by producing a downward flow of cooling water streams 5a and 5b in a planar shape from above onto the outer surface along the axial direction of the steel pipe 2. Cooling of the inner surface is started at least 7 seconds before cooling of the outer surface.

Abstract: It is a problem of the present invention to provide a method of manufacturing the seamless pipes having better mechanical properties, by means of a pipe manufacturing method with large energy-saving effect to continuously carry out processes from pierce-rolling to heat treatment. A method of manufacturing a seamless pipe comprising the steps of a pierce-rolling process, elongation rolling process, sizing process, reheating process, quenching process and tempering process, wherein the sizing process is completed with a temperature of the seamless pipe not less than 600° C. but less than 800° C., the seamless pipe is charged into a reheating furnace with a temperature not less than 400° C. and is reheated with a temperature not less than Ac3 transformation temperature but not grater than 1000° C. in the reheating process.

Abstract: The present invention relates to a high strength seamless steel pipe excellent in hydrogen-induced cracking resistance, characterized by consisting of, by mass %, C: 0.03-0.11%, Si: 0.05-0.5%, Mn: 0.8-1.6%, P: 0.025% or less, S: 0.003% or less, Ti: 0.002-0.017%, Al: 0.001-0.10%, Cr: 0.05-0.5%, Mo: 0.02-0.3%, V: 0.02-0.20%, Ca: 0.0005-0.005%, N: 0.008% or less and O (Oxygen): 0.004% or less, and the balance Fe and impurities, and also characterized in that the microstructure of the steel is bainite and/or martensite, ferrite is precipitated at grain boundaries and yield stress is 483 MPa or more. Further, to ensure high strength of the steel, the seamless steel pipe preferably contains, by mass %, at least one of Cu: 0.05-0.5% and Ni: 0.05-0.5%. To produce the above-mentioned steel pipe, it is desirable to limit a starting temperature of quenching after rolling, a cooling rate and a tempering temperature.

Abstract: A high strength seamless steel pipe having mgh yield stress and excellent hydrogen-induced cracking resistance, comprises by mass %, C: 0.03-0.11%, Si: 0.05-0.5%, Mn: 0.8-1.6%, p: 0.025% or less, S: 0.003% or less, Ti: 0.002-0.017%, Al: 0.001-0.10%, Cr: 0.05-0.5%, Mo: 0.02-0.3%, V: 0.02-0.20%, Ca 0.0005-0.005%, N: 0.008% or less and O (Oxygen): 0.004% or less, the balance Fe and impurities. The steel microstructure is bainite and/or martensite and ferrite is precipitated at grain boundaries. The seamless steel pipe can contain at least one of Cu: 0.05-0.5% and Ni: 0.05-0.5%. To produce the pipe, it is desirable to limit a starting temperature of quenching after rolling, a cooling rate and a tempering temperature.

Abstract: Disclosed are seamless steel tubes for oil well use, comprising C: 0.14-0.35%, Si: 0.05-1.0%, Mn: 0.05-2.0%, Cr: 0.05-1.5%, Mo: 0.05-2.0%, Ti: 0-0.05%, V: 0-0.1%, and Al: not less than 0.010%, wherein the concentration product by Al and N content, corrected by Ti and V, is within the range of 0.00001 to 0.00050, and the residuals are Fe and impurities including P: 0.025% or less, and S: 0.010% or less. Ti, V, Nb, or B is preferably contained to enhance the quench hardenability as well as the resistance to sulfide stress corrosion cracking, and further Ca, Mg and/or REM is preferably contained to improve the shape of non-metallic inclusions, enhancing the resistance to sulfide stress corrosion cracking. Thus, said tubes by the invention can be produced by efficient means realizing energy savings, and widely used as ones having excellent stability in mechanical strength.

Abstract: A high strength seamless steel pipe having mgh yield stress and excellent hydrogen-induced cracking resistance, comprises by mass %, C: 0.03-0.11%, Si: 0.05-0.5%, Mn: 0.8-1.6%, P: 0.025% or less, S: 0.003% or less, Ti: 0.002-0.017%, Al: 0.001-0.10%, Cr: 0.05-0.5%, Mo: 0.02-0.3%, V: 0.02-0.20%, Ca: 0.0005-0.005%, N: 0.008% or less and O (Oxygen): 0.004% or less, the balance Fe and impurities. The steel microstructure is bainite and/or martensite and ferrite is precipitated at grain boundaries. The seamless steel pipe can contain at least one of Cu: 0.05-0.5% and Ni: 0.05-0.5%. To produce the pipe, it is desirable to limit a starting temperature of quenching after rolling, a cooling rate and a tempering temperature.

Abstract: A process for producing a seamless steel pipe wherein pipe manufacturing steps and the heat treatment steps are carried out in one production line. The properties of the pipe are comparative or superior to those of the pipe manufactured in the conventional reheating, quenching and tempering process. The process is characterized by using the billet of a low alloy steel containing C: 0.15-0.50%, Cr: 0.1-1.5%, Mo: 0.1-1.5%, Al: 0.005-0.50%, Ti: 0.005-0.50% and Nb: 0.003-0.50%, and comprising the following steps (1) to (5).(1) hot rolling with 40% or more of cross sectional reduction ratio,(2) finishing the hot rolling in a temperature range of 800-1100.degree. C.,(3) putting the manufactured steel pipe promptly in a complementary heating apparatus after the finish rolling, and complementarily heating at the temperature and time satisfying the following formula (a).