摘要:
Deaeration of the high pressure oil chamber of a hydraulic tensioner takes place though a helical orifice formed by opposed flanks of the threads of a threaded hole in the tensioner housing and the threads of a screw inserted into the hole. The opposed flanks are maintained in spaced relationship by a force exerted by a spring washer disposed between the head of the screw and a surface of the tensioner housing surrounding the opening of the threaded hole. The flank of the thread of the hole that forms part of the boundary of the helical orifice can have a concave curvature in order to increase the aperture of the air flow path. A groove in the surface surrounding the opening of the threaded hole prevents the washer from sealing off the flow of air. This groove is disposed with its exit end at a level above its entry end.
摘要:
There is provided a ratchet-type tensioner whose spring stopping washer for seating a ratchet biasing spring is rigidly and readily assembled to a ratchet-receiving hole so as not to fall out of the ratchet-receiving hole and which reduces flapping noise and prevents seizure of the plunger by securely and stably operating a ratchet mechanism in operating an engine. The ratchet-type tensioner 100 is arranged so that the spring stopping washer has a C-ring anchored in the rear-end area of the ratchet-receiving hole by fitting in a diameter-reduced state and by enlarging its diameter within an anchoring circumferential groove of the ratchet-receiving hole and a spring stopping piece extended from the C-ring to a ring center area to seat the ratchet biasing spring.
摘要:
A ratchet-type tensioner capable of restricting setback of a plunger includes a ratchet mechanism that allows setback of the plunger by sliding a ratchet element in a disengaging direction to disengage ratchet teeth from rack teeth when a reaction force acts on the plunger as a result of excessive chain tension. The ratchet element is slidable in a ratchet-receiving hole, and an inclination suppressing structure that prevents the ratchet element from becoming skewed in the ratchet receiving hole to an extent such that its forward end contacts one side of the hole while its rearward end contacts the opposite sides of the hole.
摘要:
The problem to be solved by the present invention is to provide a method for continuously and effectively producing an aliphatic polyester having an increased molecular weight which prevents evaporation of diisocyanate at the step of mixing the diisocyanate with the aliphatic polyester prepolymer in a molten state at a temperature not lower than the melting point of the prepolymer and enables uniform mixing of the diisocyanate with the aliphatic polyester prepolymer. In order to solve this problem, the present invention provides a method for producing an aliphatic polyester having an increased molecular weight comprising the steps of: (i) quantitatively injecting a diisocyanate into an aliphatic polyester prepolymer which has a number average molecular weight of 5000 or higher and has terminal hydroxyl groups and in which at least one acid component is a succinic acid compound, in a molten state at a temperature not lower than the melting point thereof, wherein the amount of diisocyanate is equivalent to between one tenth and two times the amount of the hydroxyl groups in the aliphatic polyester prepolymer, (ii) quantitatively and continuously mixing the diisocyanate-containing aliphatic polyester prepolymer obtained at step (i) by a static mixer, discharging same from the static mixer, and then supplying same to a coupling reaction tank, and (iii) reacting the aliphatic polyester prepolymer with the diisocyanate in the coupling reaction tank.
摘要:
A mobile communications system is disclosed. The mobile communications system includes a first unit, provided at a base station apparatus, which controls a base station status by determining a request from an upper-layer general base station apparatus; and a second unit, provided at the general base station apparatus, which monitors for one or more mobile station apparatuses entering into/appearing in, or exiting/disappearing from a cell formed by the general base station apparatus, and, if at least one of the mobile station apparatuses enters into/appears in the cell formed by the general base station apparatus, requests for changing the base station apparatus to a service status, and, if all of the mobile station apparatuses exit/disappear from the cell formed by the general base station apparatus, requests for changing the base station apparatus to a radio unit stop status.
摘要:
There is provide a ratchet-type tensioner that enables to readily disengage a plunger from a ratchet element in maintaining an engine, that engages the plunger reliably with the ratchet element in operating the engine so as to reduce flapping noise, and that prevents seizure of the plunger. A ratchet releasing mechanism X configured to release an engagement of the ratchet teeth 151 of the ratchet element 150 with the rack teeth 122 of the plunger 120 by means of a tool pin T includes a ratchet releasing pin guide hole 114 formed through the ratchet body 110 to insert a pin edge portion T1 of the tool pin T into a plunger-side edge region of the ratchet element 150 and a ratchet releasing pin engaging hole 155 formed in the plunger-side edge region of the ratchet element 150 to guide and engage the pin edge portion T1 of the tool pin T inserted from the ratchet releasing pin guide hole 114.
摘要:
A mobile communication method according to the present invention includes step of causing a mobile station 300 standing by in a cell under a control of a radio base station 202 to send identification information of the mobile station and special identification information; step of, upon receipt of the special identification information, determining whether or not the mobile station 300 has access permission to a radio base station 200 based on the received identification information of the mobile station 300 and identification information of a second radio base station; and step of, when it is determined that the mobile station 300 has access authorization to the radio base station 200, instructing the mobile station 300 to change a radio communication parameter used by the mobile station 300.
摘要:
An image display device includes an MPEG decoder configured to generate image signals based on digital signals received by a tuner unit, an image segmenting unit configured to extract image signals included in a segment area being an arbitrary area portion from image signals outputted from the MPEG decoder, a display position adjusting unit configured to set a display area being an arbitrary area portion displaying the extracted image signals, an expansion display producing unit configured to allocate the extracted image signals to the display area to generate an expanded image, and a video synthesizing unit configured to synthesize image signals outputted from the expansion display producing unit and image signals outputted from the MPEG decoder.
摘要:
A mobile communication method according to the present invention includes a step of causing a mobile station 300 standing by in a cell under a control of a radio base station 202 to send an exchange station 500 identification information of the mobile station and specific identification information, a step of, upon receipt of the specific identification information, causing the exchange station 500 to send a service control station 600 the received identification information of the mobile station 300 and identification information of a second radio base station, a step of causing the service control station 600 to determine whether or not the mobile station 300 has access authorization to the radio base station 200 based on the received identification information of the mobile station and the received identification information of the second radio base station, and a step of, when it is determined that the mobile station 300 has access authorization to the second radio base station, causing the exchange station 500 to instruct the second radio base station to change a radio communication parameter used by the second radio base station.
摘要:
An image-forming apparatus includes an endless conveyor belt, a counter roller, and a clutch part. The endless conveyor belt is rotatable to convey paper with a surface of the conveyor belt being charged. The counter roller holds the paper between the conveyor belt and the counter roller and conveys the paper. The clutch part is caused to slip by the difference in velocity between the conveyor belt and the counter roller. The counter roller is driven through the clutch part.