Patents by Inventor Liang-Jen Chang
Liang-Jen Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11744450Abstract: An oral imaging device includes a base, a camera module, and a plurality of light source modules. The base includes a camera component, an opening surface, and a plurality of light source components connected to two sides of the camera component. A slant angle exists between each light source component and the camera component. The slant angle is a non-right angle. The opening surface is substantially parallel to the camera component. The camera module is located on the camera component and faces the opening surface. The plurality of light source modules each are located on each light source component and configured to project a light beam onto the opening surface. A center ray of the light beam passes through a center point of the opening surface.Type: GrantFiled: October 20, 2021Date of Patent: September 5, 2023Assignee: AUO DISPLAY PLUS CORPORATIONInventors: Liang-Jen Chang, Hui-Lung Lu
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Publication number: 20230068812Abstract: An oral imaging device includes a base, a camera module, and a plurality of light source modules. The base includes a camera component, an opening surface, and a plurality of light source components connected to two sides of the camera component. A slant angle exists between each light source component and the camera component. The slant angle is a non-right angle. The opening surface is substantially parallel to the camera component. The camera module is located on the camera component and faces the opening surface. The plurality of light source modules each are located on each light source component and configured to project a light beam onto the opening surface. A center ray of the light beam passes through a center point of the opening surface.Type: ApplicationFiled: October 20, 2021Publication date: March 2, 2023Inventors: Liang-Jen Chang, Hui-Lung Lu
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Patent number: 11547105Abstract: A spinning fishing reel includes a housing, a line spool reciprocatingly moveable relative to the housing, a rotor rotatable relative to the line spool, a gear disc rotatably mounted inside the housing, and a handle assembly. The gear disc includes a shaft tube, and an internal thread portion and a stop portion both provided at an inner wall of the shaft tube. The handle assembly includes a handle and a drive shaft having a first end pivotally connected with the handle. The drive shaft has an external thread portion engaged with the internal thread portion of the gear disc in a way that the drive shaft is penetrated through an opening of the housing and inserted into the shaft tube of the gear disc, and a second end of the drive shaft is abutted against the stop portion of the gear disc.Type: GrantFiled: June 23, 2021Date of Patent: January 10, 2023Assignee: OKUMA FISHING TACKLE CO. LTD.Inventors: Liang-Jen Chang, Ching-Po Liao
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Publication number: 20220408708Abstract: A spinning fishing reel includes a housing, a line spool reciprocatingly moveable relative to the housing, a rotor rotatable relative to the line spool, a gear disc rotatably mounted inside the housing, and a handle assembly. The gear disc includes a shaft tube, and an internal thread portion and a stop portion both provided at an inner wall of the shaft tube. The handle assembly includes a handle and a drive shaft having a first end pivotally connected with the handle. The drive shaft has an external thread portion engaged with the internal thread portion of the gear disc in a way that the drive shaft is penetrated through an opening of the housing and inserted into the shaft tube of the gear disc, and a second end of the drive shaft is abutted against the stop portion of the gear disc.Type: ApplicationFiled: June 23, 2021Publication date: December 29, 2022Inventors: Liang-Jen CHANG, Ching-Po LIAO
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Patent number: 11213022Abstract: A transmission mechanism of a spinning fishing reel includes a transmission shaft having a shaft body with an axial hole and a cut slit communicating with the axial hole, a gear disc having a tube portion, through which the shaft body is inserted such that the gear disc is drivenable by the transmission shaft to rotate, and a bolt having a head and a shank. The shank is screwingly threaded into the axial hole in a way that the head of the blot is abutted against an end of the tube portion of the gear disc, such that the outer periphery of the shaft body is expanded to firmly abut against the inner periphery of the tube portion. As such, the operational smoothness and stability of the product are enhanced by the transmission mechanism. Further, the transmission mechanism can be easily assembled with low manufacturing cost.Type: GrantFiled: September 17, 2020Date of Patent: January 4, 2022Assignee: OKUMA FISHING TACKLE CO. LTD.Inventors: Liang-Jen Chang, Ching-Po Liao
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Publication number: 20210076652Abstract: A transmission mechanism of a spinning fishing reel includes a transmission shaft having a shaft body with an axial hole and a cut slit communicating with the axial hole, a gear disc having a tube portion, through which the shaft body is inserted such that the gear disc is drivenable by the transmission shaft to rotate, and a bolt having a head and a shank. The shank is screwingly threaded into the axial hole in a way that the head of the blot is abutted against an end of the tube portion of the gear disc, such that the outer periphery of the shaft body is expanded to firmly abut against the inner periphery of the tube portion. As such, the operational smoothness and stability of the product are enhanced by the transmission mechanism. Further, the transmission mechanism can be easily assembled with low manufacturing cost.Type: ApplicationFiled: September 17, 2020Publication date: March 18, 2021Inventors: LIANG-JEN CHANG, CHING-PO LIAO
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Patent number: 10624326Abstract: A gear shifting device of a drum fishing reel includes first and second gears having first and second through holes respectively, and a gear shaft extending through the first and second through holes and having two through grooves. A shifting rod is provided with two elongated holes and axially moveably inserted into a shaft hole of the gear shaft. A key is inserted through the through grooves and the elongated holes and abutted with a spring disposed inside the shifting rod. When the key is inserted into the first through hole or the second through hole, the first gear or the second gear is rotatably driven by the gear shaft. As such, the key can be positioned positively, the speed changing motion acts smoothly, and the gear shifting device can be easily assembled with stable quality.Type: GrantFiled: May 29, 2019Date of Patent: April 21, 2020Assignee: OKUMA FISHING TACKLE CO., LTD.Inventors: Liang-Jen Chang, Ching-Po Liao
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Patent number: 9901086Abstract: A brake mechanism of a fishing reel is provided. The fishing reel has a shaft and a gear. The brake mechanism includes a washer set, a tubular member, a brake adjusting device, a first stair portion and a spring member. The washer set includes a first driving washer sleeved at non-circular section of the shaft, and a first brake washer located between the first driving washer and the gear. The tubular member is movably disposed at non-circular section of the shaft and abutted against the washer set. The brake adjusting device is sleeved to the shaft, abutted against the tubular member, and includes a control member screwingly engaged to thread section of the shaft. The spring member is sleeved to the shaft and abutted against the first driving washer and first stair portion, respectively. Accordingly, the fishing reel not only brakes reliably, but also releases a brake status properly.Type: GrantFiled: January 4, 2017Date of Patent: February 27, 2018Assignee: OKUMA FISHING TACKLE CO., LTD.Inventors: Liang-Jen Chang, Ching-Po Liao
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Patent number: 9807991Abstract: A brake mechanism of a fishing reel is provided, which includes a washer set, an operation member, a tubular member and a brake adjusting device. The fishing reel includes a shaft. The washer set includes a first driving washer and a first brake washer sleeved to the shaft. The operation member is coupled with the first driving washer, rotatable together, extended through the washer set, located between the shaft and washer set, and abutted against the washer set. The tubular member is axially movably disposed at the shaft and abutted against the operation member. The brake adjusting device is sleeved to the shaft and abutted against the tubular member and includes a control member screwingly engaged to a thread section of the shaft. Accordingly, the shaft would not be damaged by the washer set, and a brake status being released smoothly can be ensured.Type: GrantFiled: January 4, 2017Date of Patent: November 7, 2017Assignee: Okuma Fishing Tackle Co., Ltd.Inventors: Liang-Jen Chang, Ching-Po Liao
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Patent number: 9700034Abstract: A quick brake adjust knob, which is disposed on an axle of a fishing reel, includes a base disc, a passive member, an elastic member, a threaded member, an active member, and a panel disc. The passive member has a first arc slope gradually approaching the outside of the knob from a first staring end thereof to a first terminal end thereof and C-shaped with a breach where a first recess is provided. The active member has a first protrusion abutted against the first arc slope or accommodated in the first recess. The panel disc is fixed to the active member and rotatable relative to the base disc. The periphery of the panel disc is joined with the periphery of the base disc. Therefore, the quick brake adjust knob can quickly and precisely control the resistance of the fishing reel to stretch out the fishing wire.Type: GrantFiled: March 30, 2016Date of Patent: July 11, 2017Assignee: OKUMA FISHING TACKLE CO., LTD.Inventors: Liang-Jen Chang, Ching-Po Liao
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Publication number: 20110278779Abstract: A test jig structure is presented, which includes a frame, a substrate, and a carrying plate. The substrate is disposed in an accommodation space inside the frame. At least one slide rail is formed on the substrate. The slide rail includes a straight segment and a bending segment connected to the straight segment, and an angle exists between the straight segment and the bending segment. The carrying plate has at least one guiding member, and slides back and forth between the straight segment and the bending segment through the guiding member, so that the carrying plate can displace to a load position or a test position correspondingly.Type: ApplicationFiled: January 19, 2011Publication date: November 17, 2011Applicant: INVENTEC CORPORATIONInventors: Chao Wang Chang, Liang Jen Chang
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Publication number: 20090135614Abstract: A fluorescent stick holding seat includes a sphere having three recesses in the same shape. The recesses are adapted to hold fluorescent sticks securely. The axes of the fluorescent sticks are crisscrossed with each other so that the fluorescent sticks are able to stand at a desired position. This enhances the fun of the fluorescent stick decoration and is not subject to the environment, standing steadily and providing a warning sign outdoors.Type: ApplicationFiled: October 14, 2008Publication date: May 28, 2009Inventor: Liang-Jen CHANG
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Patent number: 7429011Abstract: A fishing reel with improved transmission efficiency is disclosed to include a shaft mounted in a casing, a spool sleeved onto the shaft, a brake pad mounted at one side of the spool, two disks mounted at two sides of the brake pad and rotatable by an external force, and a support set provided between the spool and the shaft. Thus, when the shaft is moved axially to a predetermined position, the shaft exerts a pressure to one disk and the spool via the support set, causing the brake pad to be clamped by the two disks. Therefore, the fishing reel is provided with excellent power transmission efficiency and strong spool braking force.Type: GrantFiled: August 27, 2007Date of Patent: September 30, 2008Assignee: Okuma Fishing Tackle Co., Ltd.Inventor: Liang-Jen Chang
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Patent number: 7296764Abstract: A spinning reel has a reel body and a rotor. The rotor has a base pivoted to the base, a first arm pivoted to an end of the base, a second arm pivoted to the other end of the base, an arc connected between the first arm and the second arm, a guiding block disposed between the first arm and the arc, and a wheel disposed between the guiding block and the first arm. The guiding block has a cone portion connected to the arc and a base portion connected to the wheel. The cone portion has a hole into which the arc is inserted and two tip ends located at opposite sides of the hole.Type: GrantFiled: January 8, 2007Date of Patent: November 20, 2007Assignee: Okuma Fishing Tackle Co., Ltd.Inventor: Liang-Jen Chang
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Publication number: 20070108329Abstract: A spinning reel has a reel body and a rotor. The rotor has a base pivoted to the base, a first arm pivoted to an end of the base, a second arm pivoted to the other end of the base, an arc connected between the first arm and the second arm, a guiding block disposed between the first arm and the arc, and a wheel disposed between the guiding block and the first arm. The guiding block has a cone portion connected to the arc and a base portion connected to the wheel. The cone portion has a hole into which the arc is inserted and two tip ends located at opposite sides of the hole.Type: ApplicationFiled: January 8, 2007Publication date: May 17, 2007Applicant: OKUMA FISHING TACKLE CO. LTD.Inventor: Liang-Jen Chang
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Patent number: 7178752Abstract: A crank handle for a spinning reel includes an axle inserted through a base, an bush mounted on the axle inside the base and having two cut faces, a retaining member, which has an axial hole for receiving the axle and the bush, two notches at one end, and two flat portions for engaging the cut faces of the bush, a spring sleeved onto the bush and stopped between the base and the retaining member, and a handle, which is pivoted to one end of the axle and has two blocks for engaging the notches of the retaining member.Type: GrantFiled: August 1, 2005Date of Patent: February 20, 2007Assignee: Okuma Fishing Tackle Co., Ltd.Inventor: Liang-Jen Chang
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Publication number: 20070023555Abstract: A crank handle for a spinning reel includes an axle inserted through a base, an bush mounted on the axle inside the base and having two cut faces, a retaining member, which has an axial hole for receiving the axle and the bush, two notches at one end, and two flat portions for engaging the cut faces of the bush, a spring sleeved onto the bush and stopped between the base and the retaining member, and a handle, which is pivoted to one end of the axle and has two blocks for engaging the notches of the retaining member.Type: ApplicationFiled: August 1, 2005Publication date: February 1, 2007Applicant: Okuma Fishing Tackle Co., Ltd.Inventor: Liang-Jen Chang
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Patent number: D584790Type: GrantFiled: January 9, 2008Date of Patent: January 13, 2009Inventor: Liang-Jen Chang
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Patent number: D584791Type: GrantFiled: January 9, 2008Date of Patent: January 13, 2009Inventor: Liang-Jen Chang
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Patent number: D604547Type: GrantFiled: March 18, 2009Date of Patent: November 24, 2009Inventor: Liang Jen Chang