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公开(公告)号：US11065907B2
公开(公告)日：2021-07-20
申请号：US16657371
申请日：2019-10-18
发明人： Hidehei Kageyama , Takeshi Wakayama
摘要： A hand tool includes an outer barrel, an inner barrel housed in the outer barrel, and a rear barrel assembled to the outer barrel and the inner barrel. One of the outer barrel and the inner barrel includes a cam follower protruding in a radial direction of the hand tool, the other of the outer barrel and the inner barrel includes a cam groove engaging with the cam follower, and the cam follower is supported to be movable in a radial direction.
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公开(公告)号：USD895729S1
公开(公告)日：2020-09-08
申请号：US29678476
申请日：2019-01-29
申请人： Kotobuki & Co., Ltd.
设计人： Hidehei Kageyama , Takeshi Wakayama
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公开(公告)号：USD1010733S1
公开(公告)日：2024-01-09
申请号：US29735216
申请日：2020-05-19
摘要： FIG. 1 is a perspective view of a mechanical pencil, showing our new design;
FIG. 2 is a front view of the mechanical pencil;
FIG. 3 is a rear view of the mechanical pencil;
FIG. 4 is a top view of the mechanical pencil;
FIG. 5 is a bottom view of the mechanical pencil;
FIG. 6 is a left side view of the mechanical pencil;
FIG. 7 is a right side view of the mechanical pencil; and,
FIG. 8 is an enlarged bottom view of the mechanical pencil.
The parts shown in broken lines are portions of the mechanical pencil that form no part of the claimed design.-
公开(公告)号：US20210162797A1
公开(公告)日：2021-06-03
申请号：US17169771
申请日：2021-02-08
申请人： Kotobuki & Co., Ltd.
发明人： Hidehei Kageyama , Takeshi Wakayama
摘要： A method for manufacturing a writing instrument includes inject molding a cushion spring of the writing instrument to form the cushion spring as one piece, and axially pushing out the cushion spring from a molding die set. The cushion spring elastically supports a tip of the writing instrument in an axial direction to a barrel of the writing instrument. The forming of the cushion spring includes forming a plurality of apertures in the cushion spring, one of the apertures being relatively arranged with another one of the apertures by rotations of angles at 90 degrees about the axial direction on an outer peripheral surface thereof, and forming a plurality of displacement regulating protrusions, one of the protrusions being relatively arranged with another one of the protrusions by rotations of angles at 90 degrees about the axial direction.
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公开(公告)号：USD908796S1
公开(公告)日：2021-01-26
申请号：US35508442
申请日：2019-06-07
申请人： Kotobuki & Co., Ltd.
设计人： Hidehei Kageyama , Takeshi Wakayama
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公开(公告)号：US10293632B2
公开(公告)日：2019-05-21
申请号：US15974059
申请日：2018-05-08
申请人： KOTOBUKI & CO., LTD.
摘要： A writing instrument according to an embodiment of the invention including, a chuck that chucks a writing lead, wherein the chuck includes a first chuck pawl which comes into point contact or line contact with the writing lead to press the writing lead so as to apply first contact stress to the writing lead; and a second chuck pawl which presses the writing lead so as to apply, to the writing lead, second contact stress that is lower than the first contact stress, and the first contact stress is configured such that, when a prescribed impact is applied to the writing lead, a contact portion of the writing lead subjected to the first contact stress fractures and absorbs the prescribed impact.
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公开(公告)号：USD998038S1
公开(公告)日：2023-09-05
申请号：US29735220
申请日：2020-05-19
摘要： FIG. 1 is a perspective view of a writing instrument, showing our new design;
FIG. 2 is a front view of the writing instrument;
FIG. 3 is a rear view of the writing instrument;
FIG. 4 is a top view of the writing instrument;
FIG. 5 is a bottom view of the writing instrument;
FIG. 6 is a left side view of the writing instrument;
FIG. 7 is a right side view of the writing instrument; and,
FIG. 8 is an enlarged bottom view of the writing instrument.
The parts shown in broken lines are portions of the mechanical pencil that form no part of the claimed design.-
公开(公告)号：USD871502S1
公开(公告)日：2019-12-31
申请号：US35506243
申请日：2018-06-19
申请人： KOTOBUKI & CO., LTD.
设计人： Hidehei Kageyama , Takeshi Wakayama
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公开(公告)号：US10343446B2
公开(公告)日：2019-07-09
申请号：US15974059
申请日：2018-05-08
申请人： KOTOBUKI & CO., LTD.
摘要： A writing instrument according to an embodiment of the invention including, a chuck that chucks a writing lead, wherein the chuck includes a first chuck pawl which comes into point contact or line contact with the writing lead to press the writing lead so as to apply first contact stress to the writing lead; and a second chuck pawl which presses the writing lead so as to apply, to the writing lead, second contact stress that is lower than the first contact stress, and the first contact stress is configured such that, when a prescribed impact is applied to the writing lead, a contact portion of the writing lead subjected to the first contact stress fractures and absorbs the prescribed impact.
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