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| Number | Title | Issue Date |
| 8136339 | Oil-impregnated bushing, oil-free chain and method for manufacturing oil-impregnated bushing The oil-free chain is obtained by connecting a pair of inner link plates which are connected by oil-impregnated bushings and a pair of outer link plates, which are connected by pins inserted into adjacent oil-impregnated bushings of adjacent inner link plates altern... | 03/20/2012 |
| 8118699 | Sprocket for chain A sprocket for a chain drive using a roller or bushing chain has a plurality of different pitch angles, including both pitch angles larger than the standard pitch angle, and pitch angles smaller than the standard pitch angle. The number of pitch angles in the sprock... | 02/21/2012 |
| 8092327 | Tensioner lever for chain drive In a spring-loaded tensioner lever having a coiled torsion spring accommodated in a space inside the lever, a stopper mechanism, comprising a pin held removably in a hole in the lever, holds an arm of the torsion spring against movement in the unwinding direction wh... | 01/10/2012 |
| 8088029 | Chain transmission for use in an engine In a chain transmission, the guide-contacting portions of inner and outer plates of a chain each comprise a pair of front and rear flat surfaces, an intermediate concave oil-retaining surface and convex connecting surfaces. The lengths of the flat surfaces are such ... | 01/03/2012 |
| 8066601 | Timing chain drive system In a timing chain driving system in which the speed of a driving sprocket fluctuates cyclically, the tooth pitch of a driven sprocket from which a tension span of the chain travels toward the driving sprocket varies cyclically around the circumference of the driven ... | 11/29/2011 |
| 8062158 | Timing chain drive unit In a timing chain drive unit the tooth pitch of a driven sprocket from which a tension span of the chain travels toward a driving sprocket varies cyclically around the circumference of the driven sprocket and cyclically increases and decreases the length of the tens... | 11/22/2011 |
| 8057340 | Chain A chain has a resin member integrally molded on an inner circumferential surface of a bushing with a strong joining force between the resin member and an inner circumferential surface of the bushing. The chain has an inner link in which both end portions of a pair o... | 11/15/2011 |
| 8051976 | Track frame assembly in conveyor system A track frame assembly is provided having a frame member formed from an elongated channel, a pair of track rail members each fixed in place on a predetermined surface of the frame member, and a plurality of rail fixtures with which the pair of track rail members can... | 11/08/2011 |
| 8033938 | Hydraulic tensioner In a hydraulic tensioner, at least a part of a bar is located within a coil spring that biases a plunger in the protruding direction. The bar reduces the volume of the high pressure oil chamber of the tensioner. ... | 10/11/2011 |
| 8033390 | Wear resistant, heat resistant conveyor chain A wear resistant, heat resistant conveyor chain comprising a series of links, each having a heat resistant roller rotatably fitted onto a bush between inner plates. The links are interconnected in the longitudinal direction of the chain by outer plates, and connecti... | 10/11/2011 |
| 8012054 | Rocker joint pin type silent chain In a rocker joint silent chain, the link plates have two different engagement pitches, and the connecting pins are composed of combinations of rocker pins and joint pins, where each rocker pin has one of two thicknesses and each joint pin has one of two thicknesses,... | 09/06/2011 |
| 8007385 | Sliding contact guide for transmission device 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 l... | 08/30/2011 |
| 8007384 | Hydraulic tensioner In a hydraulic tensioner having a coiled plunger-biasing spring, the volume of the high pressure oil chamber is reduced by incorporating a bar inside the spring. One of both ends of the spring are formed to block passage of the bar, so that the bar and spring can be... | 08/30/2011 |
| 7980978 | Hoisting and lowering driving engagement multi-row chain A hoisting and lowering driving engagement multi-row chain is disclosed, in which bending of the connecting pins in the chain is suppressed to avoid fatigue failure. Additionally, the load carrying balance in the chain width direction is improved, and contact vibrat... | 07/19/2011 |
| 7975464 | Guide rail for cable protection and guide device A guide rail for a cable protection and guide device in which lateral run out of the cable protection and guide device is suppressed is disclosed and claimed. Excellent traveling stability is realized and sliding of the cable protection and guide device is suppresse... | 07/12/2011 |
| 7972233 | Bearing roller chain A bearing roller chain which is sealed by a seal mechanism which prevents entry of foreign substances from the outside and leakage of lubricating oil leakage from the inside to the outside, resulting in an improvement in wear resistance of the bearing roller and avo... | 07/05/2011 |
| 7971833 | Cable protection and guide device A cable protection and guide device in which wear damage in mounting portions of a mounting bracket is avoided and the mounting bracket is reliably and strongly mounted so that the cable is smoothly protected and guided. The mounting operation of the bracket is easy... | 07/05/2011 |
| 7971706 | Conveyor chain and conveyor chain driving device A conveyor having conveyor chain 100 adapted to be engaged and driven by drums 180 and 190 having spiral flights. The conveyor chain has a number of interconnected conveying modules 120, 140, 150 and 160. Selected modules 120 | 07/05/2011 |
| 7967708 | Chain guide for use in engine A chain guide is composed of a resin shoe engageable with an aluminum base frame. The shoe has a hook formed at a chain entry end for engagement with a chain entry end of the base frame, and a C-shaped hook at the chain exit end engageable with a side edge of the ba... | 06/28/2011 |
| 7963872 | Transmission chain for use in engine The plates of transmission chain for an engine are formed with a guide-contacting configuration composed of spaced flat surfaces that come into sliding contact with a flat chain guide, and convex surfaces, continuous with and between the flat surfaces, for sliding c... | 06/21/2011 |
| 7951029 | Guide for transmission device In an engine timing chain guide composed of a synthetic resin shoe supported on a frame by L-shaped and strip-shaped engagement members integrally molded as unitary parts of the shoe, the L-shaped members are formed with oblique tongues that resiliently engage side ... | 05/31/2011 |
| 7942772 | Silent chain In a silent chain having interleaved guide rows and joint rows, guide plates at the outer sides of the guide rows are connected by engagement pins which extend through overlapping recesses formed on the outer flanks of the guide row plates, and on the inner flanks o... | 05/17/2011 |
| 7942169 | Folding type cable protection and guide device A folding type cable protection and guide device is provided in which a cable is accommodated into a cable accommodating space. The cable accomodating space can be easily adapted to accommodate the cable, even if the cable is a long body. The assembly load is decrea... | 05/17/2011 |
| 7927242 | Downward angle settable hydraulic tensioner In a hydraulic chain tensioner having a housing, a hollow plunger slidable in a plunger-accommodating hole in the housing, and a hollow sleeve extending into the plunger from a bottom of the plunger-accommodating hole, and a check valve mounted at the opposite end o... | 04/19/2011 |
| 7921986 | Hoisting and lowering driving engagement multi-row chain Aspects of the invention provide a hoisting and lowering driving engagement multi-row chain in which the weight of the chain is balanced across the chain width direction so as to improve the load balance. This allows the weight of articles to be hoisted and lowered ... | 04/12/2011 |
| 7918754 | Hydraulic tensioner A hydraulic tensioner comprises a plunger, and a plunger-accommodating hole in a tensioner housing, together forming a high pressure oil chamber. A plunger-biasing spring is provided in the high pressure oil chamber between the plunger and the bottom of the plunger-... | 04/05/2011 |
| 7914409 | Oil-free chain In an oil-free roller chain, the inner faces of the outer link plates have recesses that receive the ends of bushings, and the inner faces of the inner link plates have recesses that receive the ends of rollers surrounding the bushings. Each such recess is formed by... | 03/29/2011 |
| 7901312 | Silent chain transmission device In a silent chain transmission, a silent chain composed of uniform link plates meshes with a sprocket having two or three kinds of teeth randomly distributed around its circumference. The teeth have a common tooth gap bottom diameter, and a uniform angular spacing, ... | 03/08/2011 |
| 7893353 | Cable protection and guide device A general purpose mounting bracket of a specific length which can be easily mounted onto a cable protection and guide device. The cable protection and guide device includes a fine setting of the entire length can be made without increasing the number of parts. A bra... | 02/22/2011 |
| 7892504 | Pharmaceutical sample storage system A pharmaceutical sample storage system in which the accommodation volume of a case is increased is disclosed and claimed. The molding of the storage rack is easy. The cases in the storage rack are locked in place and will not fall out even if the storage rack is tur... | 02/22/2011 |
| 7867455 | Microtube picking device for pharmaceutical development A microtube picking device for pharmaceutical development in which the picking of a selected microtube from a storage rack can be reliably carried out without producing friction in a latch member and without shifting the position of the microtube when it is reinsert... | 01/11/2011 |
| 7837583 | Silent chain In a silent chain, link plates having two different back heights are arranged so that V-shaped oil guiding walls, opening in the direction of chain travel, are formed on the back of the chain that comes into sliding contact with the shoe of a chain guide. ... | 11/23/2010 |
| 7819389 | Hoisting and lowering device having engagement chains An engagement chain type hoisting and lowering device is disclosed, having a hoisting and lowering table attached to the upper end of two or more pairs of hoisting and lowering driving engagement chains. A driving motor drives two pairs of hoisting and lowering spro... | 10/26/2010 |
| 7789782 | Silent chain In a silent chain comprising interleaved and relatively pivotable rows of link plates, protrusions formed in the link plates contact relatively pivotable link plates in adjacent rows so that the area of contact is reduced. The protrusions can be annular, or they can... | 09/07/2010 |
| 7775925 | Oil-free chain An oil-free chain has bushings which protrude from the outer surfaces of the inner link plates into which they are press-fit, and extend into bushing supporting bores formed in the inner surfaces of the outer link plates of the chain. These bushing supporting bores ... | 08/17/2010 |
| 7771304 | Double-sided engagement type silent chain In a double-sided engagement silent chain having inner link plates with inwardly protruding teeth, outermost link plates with outwardly protruding teeth, and outer link plates with outwardly protruding teeth, adjacent the outermost link plates, the plates are compos... | 08/10/2010 |
| 7741563 | Closed type cable or the like protection and guide device A closed type cable or the like protection and guide device that reduces noise generation due to the generation of sliding contact sound during operation prevents entry of fine chips and wear powders of metal into the cable or the like protection and guide device. S... | 06/22/2010 |
| 7713156 | Chain transmission device In a chain transmission having a sprocket with an elastic ring sandwiched between a central hub and an annular toothed outer member, the tooth form is such that the root diameter, that is, the diameter of the tooth gap bottom circle, is greater than the root diamete... | 05/11/2010 |
| 7713155 | Hydraulic tensioner In the check valve of a hydraulic tensioner, a bell-shaped retainer is provided with plural, branched, leg portions which resiliently grip the outer surface of a ball seat. Oil induction slots are formed between adjacent branched leg portions of the retainer to prov... | 05/11/2010 |
| 7704175 | Link plate for roller chain and manufacturing method thereof A method of manufacturing a link plate for a roller chain, and the resulting link plate in which (1) the link plate has a shape comprising a pair of right and left pin holes, a pair of right and left half arcs, which are spaced outwardly from the pin holes respectiv... | 04/27/2010 |
