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公开(公告)号：US11320232B1
公开(公告)日：2022-05-03
申请号：US17238325
申请日：2021-04-23
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： A collapsible pedal structure of a crossbow is mounted on the crossbow, the crossbow includes a bowstring and a string pulling direction, and the collapsible pedal structure contains a pedal, a connection member, and a fastener. The pedal includes a stepping portion and a first coupling seat. The connection member includes a second coupling seat configured to rotatably connect the connection member with the first coupling seat of the pedal so that the pedal rotates in a first direction and a second direction. The fastener includes an aperture configured to receive a defining rod, a releasing means, and a fastening means. The fastening means is configured to fix the pedal in the first direction and the second direction, and the releasing means is configured to release the fastening means.
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公开(公告)号：US10209027B2
公开(公告)日：2019-02-19
申请号：US15891430
申请日：2018-02-08
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： A retention structure of a crossbow contains a fixer including a seat, a rolling element, a resilient element, and a shock absorber. The seat has an affix sheet, a fitting tube, at least one threaded aperture, an accommodation aperture, and an engagement portion. A diameter of the engagement portion is less than that of the accommodation aperture. The seat contacts with the connection mount. At least one screwing element screws with the at least one threaded aperture via the at least one locking orifice. The rolling element is housed in the accommodation aperture of the seat and is limited by the engagement portion. The resilient element is housed in the accommodation aperture and abuts against the connection mount and the rolling element. The shock absorber has a through hole and fits on the fitting tube of the seat by using the through hole.
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公开(公告)号：US09823045B2
公开(公告)日：2017-11-21
申请号：US14989002
申请日：2016-01-06
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： A crossbow includes an angle adjusting structure for an aiming seat and contains a body, a bow arm, and an adjuster. The body includes a grip handle and intersects with the bow arm which is disposed on the body and includes a bowstring. The adjuster includes a trigger set which has a triggering support with a threaded hole. The adjuster also includes the aiming seat connecting with a rifle scope, and the aiming seat has an orifice rotatably connecting with the triggering support by using a coupling shaft. The aiming seat also has a front segment and a rear segment. Between the front segment and the triggering support is defined a resilient element for pushing the front segment upward, and the rear segment has a threaded rod extending downward therefrom. The threaded rod screws with a rotatable wheel between the aiming seat and the trigger set.
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公开(公告)号：US11067357B1
公开(公告)日：2021-07-20
申请号：US16915197
申请日：2020-06-29
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： A string pulling mechanism includes a rolling assembly, a rotary shaft, a unidirectional bearing, two rollers, a switch, and a swing lever. The holder has a first accommodation portion, an opening, and a first coupling orifice. The unidirectional bearing includes an internal ring and an external ring having multiple teeth, the two rollers are fixed on the rotary shaft, and the switch is inserted to the opening of the rolling assembly and is rotatably connected with the rolling assembly. The switch is received into the opening so as to control the external ring to rotate or not rotate. The swing lever disposed on a side of the rolling assembly to actuate the rotary shaft, the internal ring of the unidirectional bearing, and the two rollers to rotate. The string is fixed on the two rollers and are inserted through and connected with a pull seat.
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公开(公告)号：US20190025003A1
公开(公告)日：2019-01-24
申请号：US15891430
申请日：2018-02-08
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： A retention structure of a crossbow contains a fixer including a seat, a rolling element, a resilient element, and a shock absorber. The seat has an affix sheet, a fitting tube, at least one threaded aperture, an accommodation aperture, and an engagement portion. A diameter of the engagement portion is less than that of the accommodation aperture. The seat contacts with the connection mount. At least one screwing element screws with the at least one threaded aperture via the at least one locking orifice. The rolling element is housed in the accommodation aperture of the seat and is limited by the engagement portion. The resilient element is housed in the accommodation aperture and abuts against the connection mount and the rolling element. The shock absorber has a through hole and fits on the fitting tube of the seat by using the through hole.
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公开(公告)号：US20180259289A1
公开(公告)日：2018-09-13
申请号：US15890423
申请日：2018-02-07
发明人： Fu-Hui Chu , Ching-Chi Hung
IPC分类号： F41B5/12
摘要： A trigger labor-saving structure of a crossbow, the crossbow includes a body, an arcuate limb, and a trigger assembly. The limb is mounted adjacent to a front end of the body and intersects with the body, and the limb includes a bowstring. The trigger assembly includes: a trigger seat arranged on the body, a trigger partially accommodated in the trigger seat and downward extending out of the trigger seat, the trigger having a stop face; a string hook member housed in the trigger seat and including an engagement face corresponding to the stop face; and at least one concave portion formed on the engagement face of the string hook member and defined between the first periphery and the second periphery, such that frictional resistance between the stop face and the engagement face reduces.
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公开(公告)号：US10274281B2
公开(公告)日：2019-04-30
申请号：US15890423
申请日：2018-02-07
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： In trigger labor-saving structure of a crossbow, the crossbow includes a body, an arcuate limb, and a trigger assembly. The limb is mounted adjacent to a front end of the body and intersects with the body, and the limb includes a bowstring. The trigger assembly includes: a trigger seat arranged on the body, a trigger partially accommodated in the trigger seat and downward extending out of the trigger seat, with the trigger having a stop face; a string hook member housed in the trigger seat and including an engagement face corresponding to the stop face; and at least one concave portion formed on the engagement face of the string hook member and defined between a first periphery and a second periphery of the engagement face. Thus, frictional resistance between the stop face and the engagement face reduces.
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公开(公告)号：US10274280B2
公开(公告)日：2019-04-30
申请号：US15890392
申请日：2018-02-07
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： In a trigger labor-saving structure of a crossbow, the crossbow includes a body, an arcuate limb, and a trigger assembly. The limb is mounted adjacent to a front end of the body and intersects with the body, and the limb includes a bowstring. The trigger assembly includes: a trigger seat arranged on the body, a trigger partially accommodated in the trigger seat and downward extending out of the trigger seat, with the trigger having a stop face, and with the stop face having a first periphery and a second periphery; a string hook member housed in the trigger seat and including an engagement face corresponding to the stop face; and at least one concave portion formed on the stop face and defined between the first periphery and the second periphery. Thus, frictional resistance between the stop face and the engagement face reduces.
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公开(公告)号：US20180259288A1
公开(公告)日：2018-09-13
申请号：US15890392
申请日：2018-02-07
发明人： Fu-Hui Chu , Ching-Chi Hung
IPC分类号： F41B5/12
摘要： A trigger labor-saving structure of a crossbow, the crossbow includes a body, an arcuate limb, and a trigger assembly. The limb is mounted adjacent to a front end of the body and intersects with the body, and the limb includes a bowstring. The trigger assembly includes: a trigger seat arranged on the body, a trigger partially accommodated in the trigger seat and downward extending out of the trigger seat, the trigger having a stop face, and the stop face having a first periphery and a second periphery; a string hook member housed in the trigger seat and including an engagement face corresponding to the stop face; and at least one concave portion formed on the stop face and defined between the first periphery and the second periphery, such that frictional resistance between the stop face and the engagement face reduces.
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公开(公告)号：US20170191798A1
公开(公告)日：2017-07-06
申请号：US14989002
申请日：2016-01-06
发明人： Fu-Hui Chu , Ching-Chi Hung
摘要： A crossbow includes an angle adjusting structure for an aiming seat and contains a body, a bow arm, and an adjuster. The body includes a grip handle and intersects with the bow arm which is disposed on the body and includes a bowstring. The adjuster includes a trigger set which has a triggering support with a threaded hole. The adjuster also includes the aiming seat connecting with a rifle scope, and the aiming seat has an orifice rotatably connecting with the triggering support by using a coupling shaft. The aiming seat also has a front segment and a rear segment. Between the front segment and the triggering support is defined a resilient element for pushing the front segment upward, and the rear segment has a threaded rod extending downward therefrom. The threaded rod screws with a rotatable wheel between the aiming seat and the trigger set.
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