Abstract: A transmission guide comprises a synthetic resin shoe supported by and integrally molded with a synthetic resin base by two-part molding. A guide length retaining mechanism, which can be formed by one or more protrusions on the back of the shoe and one or more cooperating recesses on the supporting surface of the base, retains the shoe against longitudinal movement relative to the base. A guide width retaining mechanism, which can be formed by projections on the edges of the shoe and cooperating holes formed in side walls extending from the supporting surface of the base, retains the shoe against widthwise movement relative to the base.

Abstract: The synthetic resin guide in accordance with the invention comprises an elongated synthetic resin shoe having a front surface for sliding contact with the transmission medium and a back surface opposite from the front surface and a plurality of engaging members disposed in longitudinally spaced relationship to one another. The guide also comprises an elongated synthetic resin base in contact with the back surface of the shoe and supporting the shoe, the base having a plurality of longitudinally spaced engaged portions each of which engages with one of the engaging members. One engaging member is fixed to the engaged portion with which it is engaged. The other engaging members are longitudinally movable relative to the engaged portions with which they are engaged. Thus, the guide allows longitudinal thermal expansion and contraction of the shoe relative to the base.

Abstract: A chain guide is provided in which durability is increased, weight can be reduced, material cost is reduced, the uniformity of resin orientation is improved, dimensional errors, errors in shape, internal strains, and defects are reduced, and bending rigidity such as rigidity against deflection and torsion is augmented with a simple configuration. The chain guide is provided with reinforcing ribs at a guide main body. The reinforcing ribs include first inclined reinforcing ribs and second inclined reinforcing ribs that cross each other. A zone in which the reinforcing ribs are not present is provided in the intermediate portion between two support porting.

Abstract: By employing a simple configuration, a space required for engine room can be minimized while securing enough strength, rigidity, and durability, and a reduction in a material waste, manufacturing processes, and manufacturing cost can be accomplished while occurrence of a crack or breakage during use is prevented. A chain guide includes a guide shoe, a base member configured to reinforce the guide shoe, and attaching sections. The base member is formed by a bar made of a metal material.

Abstract: A transmission guide comprises a synthetic resin shoe and a more rigid synthetic resin base, integrally molded by two-member molding. The base is formed with a pair of spaced, opposed, side walls extending in the direction of elongation of the base along opposite edges of a shoe-supporting surface of the base. These side walls engage respective side edges of the shoe, and extend past the front surface of the shoe so that they can restrict lateral movement of a transmission chain sliding along the front surface of the shoe. Indentations in the side walls receive protrusions formed on the edges of the shoe. Edges of the openings of the indentations are chamfered or convexly curved to avoid interference with the movement of the chain along the guide.

Abstract: In a transmission guide, a synthetic resin shoe and a synthetic resin base are integrally molded by two part molding. Strips projecting from a supporting surface of the base extend in parallel to the longitudinal direction of the base, and concave grooves formed in the shoe, which also extend in parallel to the longitudinal direction of the base and of the shoe, receive the strips of the base and are fused with the base.

Abstract: In a chain guide mechanism having a guide bridge for integrally holding two chain guides, a chain and a driving sprocket for more efficient assembly and maintenance, the guide bridge has a oil inlet on a surface of its sprocket-pressing base for receiving oil from an oil supply port in an engine block on which the guide bridge is mounted. The oil inlet communicates, through an internal passage within the base of the guide bridge, with an oil discharge port within a groove in which teeth of the driving sprocket travel.

Abstract: In a chain guide mechanism in which a pair of chain guides, at least one of which is a pivoted guide, are connected by mounting bosses a bridge so that the chain guides and bridge can be preassembled along with a chain and driving sprocket to form an integrated unit for installation in an engine, the chain guides include a chain-engaging guiding surface extending in a first direction from a location adjacent the mounting bosses, and a chain pressing portion extending in a second direction, opposite the first direction, substantially from the same location adjacent the mounting bosses. The pressing surfaces clamp the chain against the sprocket when a pivotable chain guide is rotated so that its chain engaging surface is moved away from the chain.

Abstract: In a chain guide mechanism, fixed and movable guides are attached to a guide bridge by cooperation of bosses on the guides with boss-receiving holes formed in spaced-apart elements of arms of the bridge. A fixed guide is held against rotation by cooperation of a projection on its mounting boss with a notch in a boss-receiving hole in a guide bridge arm element. A base, extending from an intermediate location at which the arms come together has a pressing structure that engages bosses on a driving sprocket, and a groove for receiving teeth of the driving sprocket.

Abstract: A transmission guide comprises a synthetic resin shoe and a more rigid synthetic resin base, integrally molded by two-member molding. The base is formed with a pair of spaced, opposed, side walls extending in the direction of elongation of the base along opposite edges of a shoe-supporting surface of the base. These side walls engage respective side edges of the shoe, and extend past the front surface of the shoe so that they can restrict lateral movement of a transmission chain sliding along the front surface of the shoe. Indentations in the side walls receive protrusions formed on the edges of the shoe. Edges of the openings of the indentations are chamfered or convexly curved to avoid interference with the movement of the chain along the guide.

Abstract: In a transmission guide, a synthetic resin shoe and a synthetic resin base are integrally molded by two part molding. Strips projecting from a supporting surface of the base extend in parallel to the longitudinal direction of the base, and concave grooves formed in the shoe, which also extend in parallel to the longitudinal direction of the base and of the shoe, receive the strips of the base and are fused with the base.

Abstract: The synthetic resin guide in accordance with the invention comprises an elongated synthetic resin shoe having a front surface for sliding contact with the transmission medium and a back surface opposite from the front surface and a plurality of engaging members disposed in longitudinally spaced relationship to one another. The guide also comprises an elongated synthetic resin base in contact with the back surface of the shoe and supporting the shoe, the base having a plurality of longitudinally spaced engaged portions each of which engages with one of the engaging members. One engaging member is fixed to the engaged portion with which it is engaged. The other engaging members are longitudinally movable relative to the engaged portions with which they are engaged. Thus, the guide allows longitudinal thermal expansion and contraction of the shoe relative to the base.

Abstract: A ratchet mechanism of the ratchet tensioner comprises a toothed ratchet element slidable in a housing and movable in a sliding direction, a plunger movable in an advance/setback direction and having rack teeth engageable by the teeth of the ratchet element, and a ratchet-biasing spring for biasing the ratchet element so that its teeth engage the rack teeth. The rack teeth have stop surfaces facing in the setback direction and sliding surfaces facing the advancing direction. The sliding surfaces are curved surfaces bulging in the advancing direction and in the direction of disengagement of the ratchet element from the rack teeth, the bulge being in an area extending from an entry starting location to an entry ending location.

Abstract: In a sprocket comprising a sprocket hub, sprocket teeth and a cushion plate for contacting link plates of a transmission chain, the cushion plate is formed with concave portions at angular positions corresponding to the angular positions of the tips of the sprocket teeth, thereby avoiding contact, or reducing contact pressure, between the cushion plate and the middle parts of link plates of the chain.

Abstract: In a chain guide mechanism having a guide bridge for integrally holding two chain guides, a chain and a driving sprocket for more efficient assembly and maintenance, the guide bridge has a oil inlet on a surface of its sprocket-pressing base for receiving oil from an oil supply port in an engine block on which the guide bridge is mounted. The oil inlet communicates, through an internal passage within the base of the guide bridge, with an oil discharge port within a groove in which teeth of the driving sprocket travel.

Abstract: In a sliding contact chain guide of the kind used in the timing transmission of an internal combustion engine, the back of the guide shoe, which engages a metal guide base, is formed with two, spaced longitudinal ribs, having between them a set of ribs formed in a lattice. The longitudinal ribs are wider than the ribs of the lattice.

Abstract: In a chain guide mechanism in which a pair of chain guides, at least one of which is a pivoted guide, are connected by mounting bosses a bridge so that the chain guides and bridge can be preassembled along with a chain and driving sprocket to form an integrated unit for installation in an engine, the chain guides include a chain-engaging guiding surface extending in a first direction from a location adjacent the mounting bosses, and a chain pressing portion extending in a second direction, opposite the first direction, substantially from the same location adjacent the mounting bosses. The pressing surfaces clamp the chain against the sprocket when a pivotable chain guide is rotated so that its chain engaging surface is moved away from the chain.

Abstract: In a chain guide mechanism, fixed and movable guides are attached to a guide bridge by cooperation of bosses on the guides with boss-receiving holes formed in spaced-apart elements of arms of the bridge. A fixed guide is held against rotation by cooperation of a projection on its mounting boss with a notch in a boss-receiving hole in a guide bridge arm element. A base, extending from an intermediate location at which the arms come together has a pressing structure that engages bosses on a driving sprocket, and a groove for receiving teeth of the driving sprocket.

Abstract: In a hydraulic tensioner having a hollow plunger that cooperates with a housing to form a high pressure oil chamber, the movable element of the check valve that allows oil to flow into the high pressure oil chamber is a bar-like element that extends into a coiled plunger-biasing spring and is biased into engagement with a valve seat by another coiled valve-biasing spring that extends into the plunger-biasing spring. The bar-like element has a larger diameter portion the diameter of which is slightly less than the inner diameter of the plunger-biasing spring, and a smaller diameter portion the diameter of which is slightly less than the inner diameter of the valve-biasing spring. The valve-biasing spring bears against a shoulder at the location at which the smaller and larger-diameter portions of the bar-like element meet.

Abstract: An object of the invention is to provide an image display device and a control method thereof which can reduce an image retrieving time and suppress an amount of data to be transmitted for retrieval. An image display device (4) is connected via communication lines to an NW cameral (1) for delivering picked-up images and a recorder (3) for storing the delivered images and displays the delivered images on an image display portion (43).