Abstract: A liquid injection device includes a liquid injection head and a controller including a driving signal generator generating a driving signal including, in one liquid drop injection period, a first driving pulse and a second driving pulse, and a driving signal supplier. The first driving pulse maintains the pressure chamber in an expanded state for a time period of about (½)×Tc; and the second driving pulse starts at a timing that is about n×Tc after the start of the first driving pulse, n being an integer satisfying n?2, to maintain the pressure chamber in the expanded state for the time period of about (½)×Tc, and to inject the second liquid drop at a speed higher than, or equal to, a speed at which the first liquid drop is injected.

Abstract: A printer includes an ink channel including an upstream end connectable with a cartridge storing ink, a downstream end connected to the ink head, and a middle section located between the upstream end and the downstream end. The printer also includes an air inlet tube provided in the middle section and permitting air to be introduced into the ink channel.

Abstract: A liquid injection device includes a driving circuit supplying, to an actuator, a driving signal including a prior driving pulse and a subsequent driving pulse supplied after the prior driving pulse.

Abstract: A liquid injection device includes a driving circuit supplying, to an actuator, a driving signal including a prior driving pulse and a subsequent driving pulse supplied after the prior driving pulse.

Abstract: A liquid injection device includes a driving signal generation circuit generating a driving signal, and a driving signal supply circuit supplying a portion of, or an entirety of, the driving signal to the actuator. The driving signal generation circuit generates at least one driving pulse included in a dedicated large dot driving signal before a small dot driving signal and a medium dot driving signal. The driving signal supply circuit includes a small dot supplier supplying the small dot driving signal to the actuator; a medium dot supplier supplying the medium dot driving signal, and not supplying the small dot driving signal, to the actuator; and a large dot supplier supplying the small dot driving signal, the medium dot driving signal and the dedicated large dot driving signal to the actuator.

Abstract: A liquid injection device includes a liquid injection head and a controller that generates a driving signal including first through fourth driving pulses in one liquid drop injection period and supplies the driving signal to the liquid injection head. The discharge time period of each of the first and second driving pulses is preferably set to about (½)×Tc. The start timing of the second driving pulse is preferably set to about m×Tc (m?1) after the start of the first driving pulse. The second ink drop is preferably set to be injected at a speed of the first ink drop or higher. The start timing of the third driving pulse is preferably set to about (n+(½))×Tc (n?1) after the start of the second driving pulse. The start timing of the fourth driving pulse is preferably set to about p×Tc (p?2) after the start of the third driving pulse. The fourth ink drop is injected at a speed of the third ink drop or higher.

Abstract: A liquid injection device includes a liquid injection head and a controller that generates a driving signal including first through fourth driving pulses in one liquid drop injection period and supplies the driving signal to the liquid injection head. The discharge time period of each of the first and second driving pulses is preferably set to about (½)×Tc. The start timing of the second driving pulse is preferably set to about m×Tc (m?1) after the start of the first driving pulse. The second ink drop is preferably set to be injected at a speed of the first ink drop or higher. The start timing of the third driving pulse is preferably set to about (n+(½))×Tc (n?1) after the start of the second driving pulse. The start timing of the fourth driving pulse is preferably set to about p×Tc (p?2) after the start of the third driving pulse. The fourth ink drop is injected at a speed of the third ink drop or higher.

Abstract: A liquid injection device includes a liquid injection head and a controller including a driving signal generator generating a driving signal including, in one liquid drop injection period, a first driving pulse and a second driving pulse, and a driving signal supplier. The first driving pulse maintains the pressure chamber in an expanded state for a time period of about (½)×Tc; and the second driving pulse starts at a timing that is about n×Tc after the start of the first driving pulse, n being an integer satisfying n?2, to maintain the pressure chamber in the expanded state for the time period of about (½)×Tc, and to inject the second liquid drop at a speed higher than, or equal to, a speed at which the first liquid drop is injected.

Abstract: A tire mold and tire reduce manufacturing and facilities costs and improve appearance of a product tire. The tire mold includes a tread molding body that molds a tread surface of a tire and is formed by pieces aligned in a circumferential direction of the mold. The tread molding body includes, on a mold face thereof, groove forming protrusions that form grooves on the tread surface and land forming recesses that form land portions on the tread surface and are surrounded by the groove forming protrusions. In a development view in which the pieces are connected, an air release gap in communication with the mold face of the pieces is provided along a boundary line between the pieces. At least one boundary line cuts across a plurality of the land forming recesses. Each boundary line extends through a bend, and the bend is positioned in the groove forming protrusions.

Abstract: A tire mold and tire reduce manufacturing and facilities costs and improve appearance of a product tire. The tire mold includes a tread molding body that molds a tread surface of a tire and is formed by pieces aligned in a circumferential direction of the mold. The tread molding body includes, on a mold face thereof, groove forming protrusions that form grooves on the tread surface and land forming recesses that form land portions on the tread surface and are surrounded by the groove forming protrusions. In a development view in which the pieces are connected, an air release gap in communication with the mold face of the pieces is provided along a boundary line between the pieces. At least one boundary line cuts across a plurality of the land forming recesses. Each boundary line extends through a bend, and the bend is positioned in the groove forming protrusions.

Abstract: The invention provides a base tire manufacturing method and a base tire having a proper thickness for the rubber layer by setting the thickness of the rubber layer in such a manner as to optimize the buffing allowance for the cure-molded base tire without placing limits on the shape of the post-buffing base tire. The base tire thus manufactured has a belt layer, an outermost rubber layer of a predetermined width disposed over the belt layer for application of a tread therto, and edge rubber members at both axial ends of the outermost rubber layer. For this base tire, the loss tangent of the outermost rubber layer is set lower than the loss tangent of the edge rubber members, the pre-buffing thickness A1 at the equator of the outermost rubber layer is set at “post-buffing thickness A2×150%” or less, and the post-buffing thickness A2 is set in a range of 1 mm to 3.5 mm.

Abstract: A tire exhibiting a desired design performance can be manufactured at a low cost using a precured tread having a mounting surface formed flat. In the process of manufacture, a base tire formed with a tread mounting surface having curvatures in the axial and circumferential directions of the tire and a precured tread having amounting surface formed flat, which is to be applied to the tread mounting surface of the base tire, are used. The precured tread has grooves (9) in its tread pattern surface opposite from its mounting surface. And the circumferential and axial lengths of the grooves (9) are formed shorter than desired design values, based on the differences in the circumferential and axial lengths between when the mounting surface of the tread applied to the base tire is curved along the curvatures of the tread mounting surface of the base tire and when the mounting surface of the tread is in a flat state.

Abstract: The object of the present invention is to provide a pneumatic tire with an operation life elongated by a countermeasure for stone trapping. Projections 28 for preventing stone trapping are disposed on a groove bottom only of a flexion portion 24 of a center main groove 20 disposed on a tread portion 18 where the main groove bends in a zigzag manner, and an angle of a groove wall of a linear portion 26 connecting the adjacent bending portions with respect to a tread normal line direction is larger than an angle of a groove wall of the flexion portion 24 with respect to the tread normal line direction. This can suppress stone trapping at the same level as the conventional tire without providing a projection for preventing stone trapping on the linear portion 26.

Abstract: The object of the present invention is to provide a pneumatic tire with an operation life elongated by a countermeasure for stone trapping. Projections 28 for preventing stone trapping are disposed on a groove bottom only of a flexion portion 24 of a center main groove 20 disposed on a tread portion 18 where the main groove bends in a zigzag manner, and an angle of a groove wall of a linear portion 26 connecting the adjacent bending portions with respect to a tread normal line direction is larger than an angle of a groove wall of the flexion portion 24 with respect to the tread normal line direction. This can suppress stone trapping at the same level as the conventional tire without providing a projection for preventing stone trapping on the linear portion 26.

Abstract: A vehicle suspension apparatus includes an axle. The axle includes a pair of trailing arms with a transverse beam. Resilient bushings connect the forward ends of the trailing arms to the vehicle superstructure. A linkage mechanism connects the beam to the vehicle superstructure. Under force causing lateral displacement of the axle, the linkage mechanism induces moment on the beam to counteract oversteer tendency due to the lateral displacement of the axle.

Abstract: A front suspension for an automotive vehicle includes a wheel supporting member for rotatably supporting a road wheel of the vehicle. A lower link has a first end section rotatably connected to a lower section of the wheel supporting member, and a second end section connected to a vehicle body-side member so as to be swingable generally in a vertical direction of the vehicle. A connection member is rotatably installed to an upper section of the wheel supporting member so as to be rotatable around a first axis which passes through the wheel supporting member and extends generally in the vertical direction of the vehicle. A shock absorber has an upper end section pivotally connected to the vehicle body-side member, and a lower end section swingably connected to the connection member to be rotatable around a second axis which extends generally in a fore-and-aft direction of the vehicle. A spring is supported by the shock absorber and has a third axis.

Abstract: A steering knuckle has an upper portion and a lower portion. A lower link has an outer end pivotally supporting the lower portion of the steering knuckle and an inner end swingably supported by a vehicle body. A connecting member is mounted to the upper portion of the knuckle and rotatable about a first axis relative to the upper portion. A shock absorber has an upper end pivotally connected to the vehicle body at a first point and a lower portion connected to the connecting member. An upper link is pivotally connected to the connecting member at a second point and pivotally connected to the vehicle body at a third point. A tie rod is connected to the supporting member to rotate the same about the first axis. The first axis intersects a second axis passing through the second and third points and passes through a limited area containing the first point.

Abstract: An automobile suspension system comprises a front suspension having at least a spring placed between sprung and unsprung masses to support the sprung mass thereon and a shock absorber placed between the sprung and unsprung masses to regulate spring rebound and bound, and a rear suspension having at least a spring placed between the sprung and unsprung masses to support the sprung mass thereon and a shock absorber placed between the sprung and unsprung masses to regulate spring rebound and bound. Vertical downward jacking-force characteristics of the front suspension is set to be stronger relatively with respect to vertical downward jacking-force characteristics of the rear suspension during cornering.

Abstract: A front wheel suspension for motor vehicles is constructed such that an upper link is so connected at one single end thereof to a connecting member as to provide an arrangement wherein loading a wheel support member in the lateral direction with respect to the normal forward driving direction of the motor vehicle induces a reaction force along a link axis of the upper link without inducing any substantial amount of moment about a king pin axis.

Abstract: A wheel suspension for rear wheels of an automotive vehicle, comprises a coil spring on a rear lateral link having an articulation point on an axle housing, a front lateral link, a radius rod and an upper arm having an articulation point on the axle housing at a position higher than a wheel center. A shock absorber is arranged such that its longitudinal axis crosses the wheel center as viewed the axle housing in a transverse direction with respect to a normal forward driving direction. The upper arm is connected to a suspension member via a forward pivot and a rearward pivot.