摘要:
A polyester formed by adding compounds of the following formulae I and II to a reaction product of terephthalic acid or a dicarboxylic acid mixture mainly composed of terephthalic acid or an ester-forming derivative thereof with at least one glycol or an ester-forming derivative thereof, having a melt electrical resistance of not higher than 1600.times.10.sup.6 .OMEGA. and a softening point higher than the softening point derived from Flory's equation for the melting temperature of random copolymers but lower than the softening point of a polyester obtained by adding a compound of formula I alone: ##STR1## wherein each R independently represents a hydrogen atom or an alkyl group having 1 or 2 carbon atoms.
摘要:
A lubricant condition sensing unit for the lower unit of a marine propulsion drive. Light is transmitted through the lubricant and the condition and level of the lubricant is sensed by comparing the light signal transmitted with a predetermined value.
摘要:
A cushion structure whose resilience to compression, compression durability and recovery from compression are improved and which is free from bottom-hit feel, in the matrix of which an elastomeric conjugated fiber containing as one of the components a thermoplastic elastomer is dispersed and mixed and wherein amebic, all-directionally flexible heat-bonded spots formed at the crossing points of the conjugated fibers and semi-all-directionally flexible heat-bonded spots formed at the crossing points of the conjugated fibers with the non-elastomeric, crimped polyester staple fibers are scatteringly present and, in conjugated fibers present between any two adjacent, flexible heat-bonded spots, part of them contain at least one thick portion in the longitudinal direction.
摘要:
A charging circuit and a charging method by the charging circuit that allow a stable charging operation are provided. The charging method of charging a battery from a charging power supply according to a constant current constant voltage charging system includes the steps of increasing a charging current for each predetermined current level step by step at a time of constant current charging, thereby performing the constant current charging, and stopping the increase of the charging current and continuing the charging maintaining a predetermined minimum chargeable voltage determined by the battery in advance, when it is detected that a supply voltage from the charging power supply has assumed the predetermined minimum chargeable voltage.
摘要:
A charging circuit and a charging method by the charging circuit that allow a stable charging operation are provided. The charging method of charging a battery from a charging power supply according to a constant current constant voltage charging system includes the steps of increasing a charging current for each predetermined current level step by step at a time of constant current charging, thereby performing the constant current charging, and stopping the increase of the charging current and continuing the charging maintaining a predetermined minimum chargeable voltage determined by the battery in advance, when it is detected that a supply voltage from the charging power supply has assumed the predetermined minimum chargeable voltage.
摘要:
A cellular phone of the present invention is capable of displaying an in-absence incoming call message on a display if the user of the phone does not answer an incoming call. At the same time as the in-absence incoming call message is displayed, a timer starts counting a period of time set therein beforehand. A reporting device alerts the user to the incoming call when the timer counts up the preselected period of time. The phone therefore alerts the user to the incoming call not noticed or answered by the user despite that the user carries it.
摘要:
A bass-reflex type speaker system having a cabinet including a front baffle board, a back panel and two side panels and a speaker mounted on the front panel. A port is disposed in either the back panel or in one of the side panels and a duct is in communication with the port. The back panel may be flat or have a generally triangular cross-sectional configuration where the apex of the triangle is directed toward the speaker. Further, the speaker may be positioned in the approximate center of the front baffle board and the port positioned at the apex of the back panel. A beam may be provided extending across and spaced from the port, the beam having a triangular shaped tip directed toward and spaced from the port.
摘要:
A clamp rod (6) inserted into a guide hole (5) of a housing (4) has: a clamping member (10); an inner piston (12); and a tapered pressure receiving surface (13), which are provided in this order in an axial direction from a left end to a right end. An output portion (26) for locking and releasing is provided on an inner periphery of a right end portion of one outer piston (23) inserted between the inner piston (12) and the guide hole (5). A collet (33) inserted between the pressure receiving surface (13) and the guide hole (5) is formed of four divided members (34) arranged circumferentially at substantially regular intervals. An input portion (36) driven by the output portion (26) and a pressing surface (40) which makes a wedge-engagement with the pressure receiving surface (13) from a right side are respectively provided in an outer periphery portion and on an inner periphery portion of each divided member (34). A lock chamber (42) and a release chamber (47), where pressurized fluid is supplied and discharged, are provided on respective outer sides of both ends of the outer piston (23).
摘要:
An annular piston (21) is inserted into a cylinder hole (20) of a housing (4) so as to be vertically movable and be prevented from rotating. Into a cylindrical hole (24) of the piston (21), a cylindrical rotating member (25) is inserted while prevented from moving vertically. A ball screw mechanism (28) is provided between the piston (21) and the rotating member (25). On an outer peripheral surface of the rotating member (25), a circulation passage (59) which communicatively connects a start end and a terminal end of a male spiral groove (56) is formed in a recessed manner. Into a guide hole (29) formed in an upper half of the housing (4), an output rod (30) is inserted rotatably and movably vertically. An input portion (41) of the output rod (30) is connected to the rotating member (25) so as to transmit rotation. By driving the piston (21) upward, a bolt (45) provided on an upper end portion of the output rod (30) is engaged with an internal threaded hole (12) of a work (10).
摘要:
A bolster of a press machine has a T-shaped groove, into which a T-shaped leg of a hydraulic clamp is fitted. The clamp advances and retreats along the T-shaped groove by a pneumatic cylinder. A housing of the clamp has a side surface to which a block is fixed. The block is provided with a hydraulic locking device. When placing the clamp in a waiting condition at a retreated position, a push piston of the locking device is projected downwards from a retracted position. Then the push piston pushes an upper surface of the bolster and the thus resulting reaction force fixes the T-shaped leg to a peripheral wall of the T-shaped groove.