Abstract: In order to prevent a replacement of the needle plate in the situation not suitable for replacing the needle plate, a needle plate detachable mechanism has a needle plate fixing unit for fixing a needle plate on a sewing machine body; a releasing unit for releasing a fixed state of the needle plate; and a fixing-release limiting unit for limiting a release of the fixed state of the needle plate when the needle is positioned below an upper surface of the needle plate or when the sewing machine motor is driven.

Abstract: A service plug includes a first connector housing that accommodates a first terminal, a second connector housing that accommodates a second terminal, and a lever that is rotatably provided about a rotation shaft of the second connector housing, that has a cam groove into which a cam pin of the first connector housing is engaged, and that brings the second connector housing into a disengagement state when the lever is in a first operation position and brings the second connector housing into an engagement state when the lever is in a second operation position. The lever has a stopping wall at a terminal end of the cam groove.

Abstract: A power supply circuit breaker device (1) is configured to include: a fixed-side connector device (2) provided partway along a power supply circuit (D); a movable-side connector device (3) which engages/disengages with the fixed-side connector device (2) to turn ON/OFF the power supply circuit (D); and a rotary connection mechanism (4) for engagement/disengagement between the connector devices and turning ON/OFF the power supply circuit. The rotary connection mechanism (4) is configured such that, in the engagement/disengagement between the connector devices and the turning ON/OFF of the power supply circuit, the movable-side connector device (3) is made linearly movable along an engagement direction (P), and the movable-side connector device (3) is made rotatably movable in a direction (Q) around a rotation axis parallel to the engagement direction (P).

Abstract: A service plug includes a first connector housing, a second connector housing, and a lever that is rotatable about a rotational shaft on the second housing. The lever is movable between a first operating position and a second operating position. The second connector housing is in a non-fitted state, when the lever is in the first operating position. The second connector housing is in a fitted state, when the lever is in the second operating position. The lever includes a preventive wall at a terminating end portion of the cam groove.

Abstract: A service plug includes a first connector housing that accommodates a first terminal, a second connector housing that accommodates a second terminal, and a lever that is rotatably provided about a rotation shaft of the second connector housing, that has a cam groove into which a cam pin of the first connector housing is engaged, and that brings the second connector housing into a disengagement state when the lever is in a first operation position and brings the second connector housing into an engagement state when the lever is in a second operation position. The lever has a stopping wall at a terminal end of the cam groove.

Abstract: A power supply circuit breaker device (1) is configured to include: a fixed-side connector device (2) provided partway along a power supply circuit (D); a movable-side connector device (3) which engages/disengages with the fixed-side connector device (2) to turn ON/OFF the power supply circuit (D); and a rotary connection mechanism (4) for engagement/disengagement between the connector devices and turning ON/OFF the power supply circuit. The rotary connection mechanism (4) is configured such that, in the engagement/disengagement between the connector devices and the turning ON/OFF of the power supply circuit, the movable-side connector device (3) is made linearly movable along an engagement direction (P), and the movable-side connector device (3) is made rotatably movable in a direction (Q) around a rotation axis parallel to the engagement direction (P).

Abstract: In order to prevent a replacement of the needle plate in the situation not suitable for replacing the needle plate, a needle plate detachable mechanism has a needle plate fixing unit for fixing a needle plate on a sewing machine body; a releasing unit for releasing a fixed state of the needle plate; and a fixing-release limiting unit for limiting a release of the fixed state of the needle plate when the needle is positioned below an upper surface of the needle plate or when the sewing machine motor is driven.

Abstract: A lever fitting-type connector includes a first housing, a lever that has a pair of arm sections each having a cam groove, and a second housing having a pair of cam pins. Each of the cam grooves includes an inlet section, a curved section, and a guide rail section provided on an inner peripheral face of the cam groove. The inlet section has a running-on preventing portion which is formed so that the cam pin enters the inlet section without allowing the guide rail section to run on the cam pin.

Abstract: A service plug includes a first connector housing, a second connector housing, and a lever that is rotatable about a rotational shaft on the second housing. The lever is movable between a first operating position and a second operating position. The second connector housing is in a non-fitted state, when the lever is in the first operating position. The second connector housing is in a fitted state, when the lever is in the second operating position. The lever includes a preventive wall at a terminating end portion of the cam groove.

Abstract: A lever fitting-type connector includes a first housing, a lever that has a pair of arm sections each having a cam groove, and a second housing having a pair of cam pins. Each of the cam grooves includes an inlet section, a curved section, and a guide rail section provided on an inner peripheral face of the cam groove. The inlet section has a running-on preventing portion which is formed so that the cam pin enters the inlet section without allowing the guide rail section to run on the cam pin.

Abstract: Multi-pulse trains of a forward laser beam are applied to an optical disc to record mark areas thereon. The multi-pulse trains correspond to the mark areas respectively. The multi-pulse trains represent information to be recorded. Detection is made as to an intensity of a reflected laser beam which results from reflection of the forward laser beam by the optical disc. The detected intensity is divided by a setting intensity to get a division result. A condition of recording of each of the mark areas is detected in response to the division result. An amplitude of each of the multi-pulse trains is controlled in response to the detected condition.

Abstract: An apparatus operates for recording and reproducing information on and from a recording medium formed with a track and pre-pits. The track has a wobble. The pre-pits are in a predetermined phase relation with the wobble of the track. The apparatus includes a pickup for reproducing a signal from the recording medium. A limiter operates for limiting an amplitude of the signal reproduced by the pickup in response to a limiting level, and thereby processing the signal reproduced by the pickup into a limiting-resultant signal. A filter operates for suppressing components of the limiting-resultant signal, and thereby processing the limiting-resultant signal into a filtering-resultant signal. The components have specified frequencies, and are caused by the pre-pits. The limiting level for the limiter is generated in response to the filtering-resultant signal. A signal caused by the wobble of the groove is extracted from the filtering-resultant signal.

Abstract: An apparatus operates for recording and reproducing information on and from a recording medium formed with a track and pre-pits. The track has a wobble. The pre-pits are in a predetermined phase relation with the wobble of the track. The apparatus includes a pickup for reproducing a signal from the recording medium. A limiter operates for limiting an amplitude of the signal reproduced by the pickup in response to a limiting level, and thereby processing the signal reproduced by the pickup into a limiting-resultant signal. A filter operates for suppressing components of the limiting-resultant signal, and thereby processing the limiting-resultant signal into a filtering-resultant signal. The components have specified frequencies, and are caused by the pre-pits. The limiting level for the limiter is generated in response to the filtering-resultant signal. A signal caused by the wobble of the groove is extracted from the filtering-resultant signal.

Abstract: Multi-pulse trains of a forward laser beam are applied to an optical disc to record mark areas thereon. The multi-pulse trains correspond to the mark areas respectively. The multi-pulse trains represent information to be recorded. Detection is made as to an intensity of a reflected laser beam which results from reflection of the forward laser beam by the optical disc. The detected intensity is divided by a setting intensity to get a division result. A condition of recording of each of the mark areas is detected in response to the division result. An amplitude of each of the multi-pulse trains is controlled in response to the detected condition.

Abstract: A funnel glass containing PbO for a cathode ray tube, wherein when the composition is represented by wt % based on oxides, the content of SrO is at least 1.0 wt %, the content of BaO is at least 1.0 wt %, and the ratio of the content of PbO to the total amount of PbO, SrO, BaO, CaO and MgO, is at most 0.69, and whereby the lead elution A of the glass as measured by the following method A is at most 1.0 &mgr;g/cm2, and the X-ray absorption coefficient at a wavelength of 0.6 Å is at least 40 cm−1: Method A: The glass is immersed in distilled and deionized water at 90° C. for 20 hours, whereupon the glass is taken out, and the amount of lead in the distilled and deionized water is measured by inductively coupled plasma emission spectrometry, and the measured value of the amount of lead is divided by the surface area of the glass, and the product is taken as the lead elution A.

Abstract: A glass composition comprising from 45 to 66 wt % of SiO.sub.2, from 0 to 15 wt % of Al.sub.2 O.sub.3, from 10 to 24 wt % of Li.sub.2 O+Na.sub.2 O+K.sub.2 O, from 14 to 26 wt % of CaO+MgO+SrO+BaO+ZnO, and from 0 to 1 wt % of SO.sub.3 +Sb.sub.2 O.sub.3, said glass composition containing substantially no zirconia and having a strain point of at least 560.degree. C. and a linear thermal expansion coefficient of at least 80.times.10.sup.-7 /.degree.C. within a temperature range of from 50.degree. to 350.degree. C.

Abstract: A glass composition comprising from 45 to 66 wt % of SiO.sub.2, from 0 to 15 wt % of Al.sub.2 O.sub.3, from 10 to 24 wt % of Li.sub.2 O+Na.sub.2 O+K.sub.2 O, from 14 to 26 wt % of CaO+MgO+SrO+BaO+ZnO, and from 0 to 1 wt % of SO.sub.3 +Sb.sub.2 O.sub.3, said glass composition containing substantially no zirconia and having a strain point of at least 560.degree. C. and a linear thermal expansion coefficient of at least 80.times.10.sup.-7 /.degree.C. within a temperature range of from 50.degree. to 350.degree. C.

Abstract: A closed system, impact-fatigue test machine for grinding balls comprised of a vertically extending guide member and a lift conveyor wherein the guide member lies above a recessed anvil and defines in its center a longitudinal opening. Each grinding ball is carried upwardly by the conveyor to an opening in the upper portion of the guide member and then is dropped into the guide member to land laterally supported, upon an earlier dropped grinding ball which rests on the anvil below. The earlier dropped ball is then pushed from the anvil toward the conveyor causing the dropped ball to impact the anvil below. The number of dropping cycles that each ball can tolerate without fracture is counted by a counter. Fracture of the balls is detected by a fracture detector.