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JP3735355B2 |
To provide a link plate for a silent chain and its manufacturing method that can attain consistency in punching quality by suppressing deviation in shaving for a punched periphery after rough punching in a punching die for the link plate...
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JP3735356B2 |
To provide a link plate for a roller chain and its manufacturing method by which the equalization of the blanking quality can be achieved by suppressing the deviation of shaving to the blanked peripheral edge part after rough blanking in...
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JP3680066B2 |
To cut a narrow-width chain without leaving chips of a connecting pin, in regards to a chain cutting tool and a shaft drawing pin. This chain cutting tool 10 for cutting a chain by removing the chain connecting pin is provided with a mai...
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JP3672908B2 |
The invention relates to a chain assembly method for joining a single or multiple link-plate chain having alternating, uncranked outer and inner chain links using prefabricated inner chain links in particular comprising two parallel link...
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JP2005118851A |
To provide a metallic projection for preventing link plates from falling off from the ends of the pins of a link chain constituted by longitudinally and transversely connecting the link plates by means of the pins inserted into their pin...
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JP2005120444A |
To provide a steel to be cold-stamped, which has high toughness and an adequate surface quality of a stamped surface after having been cold-stamped.The steel to be cold-stamped comprisies at least one element selected from the group cons...
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JP2005505689A |
Ferrous articles are austenitized, then converted to at least 60% bainite, and the balance substantially converted to martensite by quenching; the articles are then cold worked, preferably by both compression and tensile deformation to a...
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JP3609998B2 |
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JP3595068B2 |
To manufacture a pin chip chain with high precision and efficiency without damaging a chip. A chain transferring means 2 is provided, which transfers a chain X in its longitudinal direction with a pin Y where a chip Z is fitted temporari...
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JP3585420B2 |
To provide a rounded member for a chain and a method of manufacturing the rounded member, preventing the occurrence of a wavy phenomenon at the end face of the rounded member, impeding the leakage of a lubricant proceeding in the axial d...
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JP2004230411A |
To provide a hook-attached chain having high mechanical strength and also to provide its manufacturing method while investment in the equipment is reduced by half.This chain is a hook-attached chain 1 including a chain body 3 which is co...
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JP3547050B2 |
To improve the fatigue strength of a carbon steel material over the whole material by a relatively easy means by applying the tension to the carbon steel material having a bainite structure of a specified mean hardness HRC, and giving th...
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JP2004516899A |
A method of decorating items of jewelry. The method includes the steps of bringing about a translational relative movement between the item and a cutting tool along the longitudinal axis of the item, and driving the tool with a cutting m...
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JP3530909B2 |
By means of having taken advantage of certain physical properties of solids with a manufacturing process of incrementally deforming hollow links, there is produced new hollow diamond cut jewelry rope chain, which results in a product wei...
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JP3510104B2 |
To simply measure the extension of a roller chain used for various devices, to easily judge whether the exchange of the chain is necessary or not and to simply measure the extension of the chain even in the case that the chain is in a po...
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JP2004028154A |
To restrict string vibration of a silent chain without deteriorating power transmitting efficiency.The link plate 2 for the silent chain 1 has a pair of tooth parts 21 and a pinhole 22, and it has a projection part 20 projected over a pi...
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JP2003301889A |
To provide an antifriction chain to perform smooth bending slide for a long period without the occurrence of abnormal wear elongation even when the chain is used together with lubrication oil extremely deteriorated and high in the degree...
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JP2003269549A |
To provide an anti-abrasion chain with improved abrasion resistance without causing hydrogen brittleness.Diamond-like amorphous carbon coating (DLC) is applied on the surface of at least one part constituting a chain 10, for example, a p...
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JP2003260536A |
To improve the parallelism of pin holes of a link plate and also improve the surface roughness of the inner peripheral surface of the pin holes while suppressing deterioration of production efficiency.In the link plate 1, a back part 5, ...
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JP2003253942A |
To solve problems of difficult production and repair of duplicate keys and insufficient preparation of duplicate keys due to high functions and high prices thereof under the circumstances that lock breakage of doors of a house, an automo...
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JP2003247608A |
To provide a chain which is formed in an endless manner with odd number of links, and is not cut in a joint part connecting both end parts of a chain main body even if large tensile force is applied to the chain.Both end parts of the cha...
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JP2003222199A |
To provide an inexpensive steel chain with an attractive surface which can suppress generation of rust for a long period of time.After inner/outer plates 2, 3 of steel chain parts are heat-treated, shot peening using a projection materia...
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JP2003175474A |
To provide a tool for inserting or extracting a pin of a roller chain precisely and easily.This tool 10 includes a body part 12 having a pair of teeth 26 designed to engage two chain links 36, 38 to be connected or separated by insertion...
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JP2003113904A |
To provide a loop chain excellent in design wherein a light emitting member or a light reflection member is freely mounted and demounted to and from each loop and is hard to come off.Attachment members 3a, 4a provided with the light emit...
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JP2003513206A |
A chain with mutually connected chain links (1, 2) each comprising a back portion and two parallel wall portions protruding substantially perpendicularly therefrom, in which wall portions corresponding rivet holes have been provided in e...
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JP2003061720A |
To provide a production method which enables continuously producing design parts with an elastic disc interposed in a hollow shell body.The production method of design parts for decoration chains comprises a process for supporting a plur...
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JP2002361348A |
To provide a manufacturing method for a catapillar strip link capable of simplifying the manufacturing process and working, and capable of lightening a link product. The manufacturing method for the catapillar strip link comprises a proc...
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JP3341002B1 |
[wrap up] [Task] Provided are a ball chain manufacturing method and a manufacturing mold that have a long relative mold life and can easily manufacture a ball chain with high accuracy and high quality. Each of the molds 20 has a pair of ...
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JP3331499B2 |
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JP2002254134A |
To provide an exchanging device for a chain connecting-pin capable of exchanging only a cross-shaped pin when either side of roller units forming a chain that is alternately connected by longitudinal roller units and lateral roller units...
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JP2002239680A |
To provide an easily carriable chain joint apparatus which can provide excellent work efficiency.The apparatus consists of a tool body 1, a firs claw body 4 provided freely slidably on the tool body 1, a fixing body 6 for fixing the firs...
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JP2002522229A |
A method for joining a plate chain link is to be improved, in which at least one plate is connected to at least one bolt by way of a pressing and aligning process. This is achieved by the measures that the bolt is centered in relation to...
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JP2002156002A |
To smooth end faces of plates constituting a chain, reduce sliding resistance between the plates and a guide mechanism, suppress abrasion of shoes of the guide mechanism, and continuously smooth the end faces of the plates after they are...
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JP2002130384A |
To improve surface precision of an inner face of a pin hole in a link plate of a joint line, perpendicular precision, location accuracy and parallel accuracy of the pin hole with respect to a plate plane, in order to restrain wear of a l...
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JP2002126853A |
To provide a working tool for a clip type joint link for connecting a roller chain by equipping the clip type joint link to the link inside a roller chain, or parting the roller chain by releasing the clip type joint link from the inner ...
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JP2002028749A |
To improve the fatigue strength of a link plate for a silent chain by preventing generation of micro-cracks.In the link plate 2, the shaving (step (c)) of each inner flank surface 2a and a crotch part 5 is simultaneously performed after ...
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JP2001300685A |
To easily manufacture a link chain with the process guarantee, to simplify the manufacturing process, to favorably and rapidly achieve the manufacture, to fix the chain having a securing member to a chain component by a high holding tran...
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JP3222435B2 |
To easily and reliably enable the assembly of a link and pin by being able to use an existing press without the need for special machinery for the operation of fixing a pin during assembly of a pin and a fixing structure of a belt link a...
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JP3199225B2 |
To provide a silent chain which can reduce the elongation due to wear and maintain high precision over a long periods. Shaving is applied to at least the inner surface of pin holes 2 of a plate 1 of an articulated train, and a hardened l...
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JP2001187590A |
To provide a method and a device for assembling a joint part of an endless crawler chain for a crawler type machine so as to prevent axial play at the joint part. The joint part is provided with a pair of links and a cylindrical pin. Eac...
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JP2001099237A |
To obtain a sufficient amount of chamfering without damaging a shape of a section, improve assembling ability, and reduce a manufacturing cost. Before a wire rod 12 which is material for a rocker pin 10 for a chain is cut into a specifie...
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JP2001073187A |
To improve the corrosion resistance to acid such as hydrochloric acid or the like, moreover to reduce heat energy for corrosion resisting treatment and furthermore to reduce the operating time. On the surface of a base material 12 in whi...
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JP2001050355A |
To reduce the friction between a pin and a bush to allow the long-term use for large load transmission by inserting a pin consisting of steel material into a bush formed of an inner cylinder consisting of a non-iron metallic material and...
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JP3134224B2 |
To insert a decorative chain from a penetrating opening which is punctured and provided to a hollow elastic material with a wire and so forth by arranging the hollow elastic material in metallic shell bodies which are punctured and provi...
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JP3113233B2 |
To provide an assembly device and assembly method improved to integrally assemble workpieces. This assembly device has a drive link mechanism 58 having a linearly movable ram 30 for pressing the one workpiece to another workpiece. This d...
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JP2000263444A |
To eliminate generation of a flaw and dent in a sprocket tooth surface or in a mesh surface of a link plate, to improve surface pressure fatigue strength of these surfaces, and to reduce a cost. A glass blast method blowing glass beads 5...
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JP2000205347A |
To improve fatigue strength by previously executing a shaving work on a crotch part before shape punching of a link plate having a pair of pin holes, a pair of tooth parts and crotch parts. In this link plate 2 taken out of blank materia...
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JP3069345B1 |
A link plate for silent chains includes a circumferential edge beveled to a greater extent at at least one of opposite longitudinal ends of the link plate than at another part including a pair of link teeth, so as to form a tapered butt-...
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JP2000167642A |
To easily fit a jewel on the surface of a decorative stock made of a metallic sheet without using any welding or adhesive by maintaining the jewel by a jewel holding member.Caulking pieces 10b, 10b projecting in the direction of a back s...
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JP3048997B2 |
To save an outside side-plate and a pin chain link by constituting an endless gripping chain of first and second side-plates (links) furnished with two part journals integrally molded with each other with a clearance between them and man...
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