KOTOBUKI & CO., LTD.
|KOTOBUKI & CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20150023715||Stick-shaped Material Propelling Container - A stick-shaped material propelling container is disclosed which comprises a barrel having a spiral groove formed in its inner peripheral surface, a guide tube having slits and inserted in the barrel so as to be rotatable relative to the barrel and axially unmovable, and a stick-shaped material holding member provided with side plates and protrusions and slidably inserted in the tube with the protrusions being engaged with the grooves through the slits. The groove has a structure for causing rear end portions of the side plates to come closer to each other and for causing tip end portions of the side plates to be separated radially outward from each other according to the mutually approaching movements of the rear end portions of the side plates, when the protrusions are slid along a tip end portion of the groove according to relative rotation of the barrel and the tube.||01-22-2015|
|20130300693||WRITING INSTRUMENT - A writing instrument is disclosed which includes a cylindrical barrel and an end cover having a robust structure and attached to the cylindrical barrel. The end cover comprises a cylindrical base attached to a rear end portion of the cylindrical barrel, a cover body fitted around an outer peripheral surface of the cylindrical base, a stopper ring fitted around an outer peripheral surface of at least a fitted portion between the cylindrical base and the cover body, and a cooperation structure for facilitating enhancing of holding force which is exerted on the cover body by the cylindrical base and the stopper ring.||11-14-2013|
|20130152837||NEEDLE THREADING DEVICE AND OPERATION UNIT THEREFOR - A needle threading device is disclosed which comprises a first mechanism having a hole for receiving a needle and a slit for receiving a thread, a second mechanism having a threader pin and pivotally supported by the first mechanism so as to be pivotable between a first position and a second position different from the first position, the threader pin enabling the thread to pass through an eye of the needle when the second mechanism is pivoted to the second position from the first position, a first biasing member urging the second mechanism to the first position, an operating member causing the second mechanism to be pivoted to the second position against an action of the first biasing member, and a second biasing member urging the operating member and the second mechanism in a direction in which they are spaced away from each other.||06-20-2013|
|20130134189||KNOCK-TYPE PROPELLING CONTAINER - A knock-type propelling container includes a body storing a medium therein and having a tip end opening for allowing the medium to be propelled therefrom, a propelling member slidably arranged in the body and capable of propelling the medium toward the opening, the propelling member being provided with a forward/rearward extending prolongation portion having engaging-stop portions formed at fixed intervals in a forward/rearward direction, a knock member provided at the body so as to be reciprocably moved relative to the body, a thrusting member arranged in the body so as to be moved forward by knocking the knock member, and having an engagement portion engageable with the engaging-stop portions, and a detent member fixedly arranged in the body and engageable with the propelling member.||05-30-2013|
|20120230751||MECHANICAL PENCIL - A mechanical pencil comprises a shaft cylinder (||09-13-2012|
|20120207529||PIVOTAL MANIPULATION TYPE WRITING INSTRUMENT - A pivotal manipulation type writing instrument includes a pivotable body pivotable relative to a container main body and a writing element ejecting unit configured to actuate and move a slider to urge a writing element to be ejected from the container main body as the pivotable body is pivoted. The pivotable body is pivotable relative to the container main body by 360° in either left or right direction, and the writing element can be returned to a retracted state in which the writing element is retracted into the container main body from an ejected state in which the writing element is ejected from the container main body by moving the pivotable body in either left or right direction.||08-16-2012|
|20110191987||CLIP ATTACHMENT STRUCTURE FOR A WRITING INSTRUMENT - A clip mounting structure for a writing implement has a shaft tube, a clip mounted at the rear part of the shaft tube, and an insertion member inserted into the rear part of the shaft tube. A clip mounting section to which the rear part of the clip is fitted and aligned is formed at the rear part of the shaft tube. Mounting sections curved in the direction along the inner peripheral surface of the shaft tube are formed at opposite sides of the rear part of the clip. Fitting recesses into which the mounting sections of the clip are fitted are formed in the outer wall of the insertion member. With the mounting sections of the clip fitted in and engaged with the fitting recesses in the insertion member, the insertion member is inserted into the rear part of the shaft body to fit the rear part of the clip into the clip mounting section of the shaft tube. Thus, the insertion member is engaged in position inside the shaft tube.||08-11-2011|
|20110123250||KNOCK-TYPE WRITING INSTRUMENT - A knock-type writing instrument is provided, which allows an easy refill exchange with a simple operation while inhibiting deformation of slits, breakage of a shaft tube, etc., during the refill exchange.||05-26-2011|
|20100021227||STICK-SHAPED ARTICLE PROPELLING CONTAINER - Variations in the size of a stick-like object are accommodated, and abutments are urged to contact with the stick-like object with an appropriate pressure.||01-28-2010|
|20100003063||Liquid Applicator - There is provided a liquid applicator allowing a liquid to be easily replenished and replaced, as well as capable of containing a large amount of liquid. The liquid applicator includes a main body provided with a tank inside thereof, a tip shaft that is coupled to the tip end side of the main body, and a brush that is fixed in the tip shaft and projecting from the tip end of the tip shaft. A liquid may be sucked into a tank by releasing the coupling of the main body and the tip shaft, sinking a tip end opening of the main body in the liquid, and sliding a sliding cylinder attached to the rear portion of the main body.||01-07-2010|
|20080260453||End plug mounting structure for writing instrument - An end plug mounting structure for writing instrument of the present invention can securely mount an end plug onto a barrel and remove it more easily. Even if assembling and removing is performed repeatedly, tightness for the end plug to be assembled on the barrel can be prevented from weakening. A locking hole is provided around cylindrical rear portion of the barrel, an inserting portion with circular cross section inserted into rear portion of the barrel from rear end of the barrel is provided on the end plug, a locking protrusion locked in a locking hole is provided at periphery of the inserting portion, a groove extending forward from rear end of the barrel and in which the locking protrusion moves is provided on inner surface of rear portion of the barrel, thereby the end plug is assembled on the barrel by means of locking the locking protrusion that moves forward in the groove in the locking hole. The locking hole is configured to be adjacent to the groove, so that the locking protrusion moving forward in the groove moves in circumferential direction so as to be locked in the locking hole. A protruding strip extending in lengthwise direction is configured on side bottom of the groove on the side of the locking hole, so that the locking protrusion can stride over the protruding strip to move along circumferential direction.||10-23-2008|
|20080247804||Stick-Shaped Material Propelling Container - In a stick-shaped material propelling container capable of propelling and retracting a stick-shaped material, the influence of variation of the dimension of the stick-shaped material can be made small. An inner barrel is slidably inserted in an outer barrel, an elastic body which urges the inner barrel rearward is provided between the inner barrel and the outer barrel, a chuck piece which holds a stick-shaped material is provided at a tip end portion of the inner barrel, and a chuck ring is inserted between the chuck piece and the outer barrel. A cross section of the stick-shaped material forms a triangular shape, the frictional force applying part which is in contact with the stick-shaped material to apply a frictional force is formed on an inner peripheral surface of the outer barrel, and the frictional force applying part abuts on a side in the vicinity of a vertex of the stick-shaped material in a cross section of the stick-shaped material.||10-09-2008|
Patent applications by KOTOBUKI & CO., LTD.