Patents by Inventor Hsien-Chung Tuan-Mu
Hsien-Chung Tuan-Mu 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: 9975225Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.Type: GrantFiled: August 22, 2014Date of Patent: May 22, 2018Assignee: Apex Brands, Inc.Inventors: Paul Steinweg, Hsien-Chung Tuan-Mu
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Patent number: 8978524Abstract: A ratchetable open-ended wrench includes a handle for a hand to grasp, a wrench head located on one end of the handle, and a fastener room located in the wrench head for accommodating a workpiece to be rotated. The wrench head further includes a first jaw having a first driving wall, a second jaw having a second driving wall facing the first driving wall, an inner wall extending from the second driving wall into the second jaw, a concavity, an auxiliary jaw retracting opening, an auxiliary jaw capable of longitudinally sliding into the auxiliary jaw retracting opening in an elastic way, and an auxiliary jaw limiting member coupled to a limiting slot. The auxiliary jaw further includes an exterior end having a pillow in contact with the driving wall and a pushing surface for working together with the first jaw to grip the workpiece under operation, an interior end, and a limiting slot.Type: GrantFiled: January 7, 2013Date of Patent: March 17, 2015Assignee: Apex Took (HK) Limited Taiwan BranchInventors: Hsien-Chung Tuan-Mu, Chung-Sung Li
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Publication number: 20140360321Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.Type: ApplicationFiled: August 22, 2014Publication date: December 11, 2014Inventors: Paul Steinweg, Hsien-Chung Tuan-Mu
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Patent number: 8813612Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.Type: GrantFiled: February 15, 2013Date of Patent: August 26, 2014Assignee: Apex Brands, Inc.Inventors: Paul Steinweg, Hsien-Chung Tuan-Mu
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Patent number: 8631725Abstract: A ratchetable open-ended wrench includes a handle H for a hand to grasp, a wrench head 100 located on one end of the handle, and a fastener room 160 located in the wrench head 100 for accommodating a workpiece W to be rotated. The wrench head 100 further includes a first jaw 110 having a first driving wall 114, a second jaw 120 having a second driving wall 124 facing the first driving wall 114, an inner wall 126 extending from the second driving wall 124 into the second jaw 120, a fastener-jaw room 128, an auxiliary jaw retracting opening 13, an auxiliary jaw 140 capable of longitudinally sliding into the auxiliary jaw retracting opening 130 in an elastic way, and an auxiliary jaw limiting member 150 coupled to a limiting slot 148. The auxiliary jaw 140 further includes an exterior end 142 having a pillow 142 in contact with the driving wall 126 and a pushing surface 144 for working together with the first jaw 110 to grip the workpiece W under operation, an interior end 146, and a limiting slot 148.Type: GrantFiled: June 10, 2008Date of Patent: January 21, 2014Assignee: Apex Tool (HK) Limited Taiwan BranchInventor: Hsien-Chung Tuan-Mu
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Publication number: 20130228985Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.Type: ApplicationFiled: February 15, 2013Publication date: September 5, 2013Applicant: Easco Hand Tools, Inc.Inventors: Paul Steinweg, Hsien-Chung Tuan-Mu
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Patent number: 8375831Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.Type: GrantFiled: April 10, 2008Date of Patent: February 19, 2013Assignee: Easco Hand Tools, Inc.Inventors: Paul Steinweg, Hsien-Chung Tuan-Mu
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Patent number: 8347764Abstract: A ratchetable open-ended wrench includes a handle for a hand to grasp, a wrench head located on one end of the handle, and a fastener room located in the wrench head for accommodating a workpiece to be rotated. The wrench head further includes a first jaw having a first driving wall, a second jaw having a second driving wall facing the first driving wall, an inner wall extending from the second driving wall into the second jaw, a concavity, an auxiliary jaw retracting opening, an auxiliary jaw capable of longitudinally sliding into the auxiliary jaw retracting opening in an elastic way, and an auxiliary jaw limiting member coupled to a limiting slot. The auxiliary jaw further includes an exterior end having a pillow in contact with the driving wall and a pushing surface for working together with the first jaw to grip the workpiece under operation, an interior end, and a limiting slot.Type: GrantFiled: April 3, 2009Date of Patent: January 8, 2013Assignee: Apex Tool (HK) Limited Taiwan BranchInventors: Hsien-Chung Tuan-Mu, Chung-Sung Li
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Patent number: 7673542Abstract: A spanner comprises a box end that has an inner periphery consisting of a number of wall faces to define a first polygonal receiving space. Each wall face includes a groove defined therein. The grooves of the wall faces together define a second polygonal receiving space. At least one of the grooves includes a closed first end and an open second end.Type: GrantFiled: March 10, 2008Date of Patent: March 9, 2010Assignee: Easco Hand Tools, Inc.Inventors: David Ling, Hsien-Chung Tuan-Mu
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Publication number: 20090301271Abstract: A ratchetable open-ended wrench includes a handle for a hand to grasp, a wrench head located on one end of the handle, and a fastener room located in the wrench head for accommodating a workpiece to be rotated. The wrench head further includes a first jaw having a first driving wall, a second jaw having a second driving wall facing the first driving wall, an inner wall extending from the second driving wall into the second jaw, a concavity, an auxiliary jaw retracting opening, an auxiliary jaw capable of longitudinally sliding into the auxiliary jaw retracting opening in an elastic way, and an auxiliary jaw limiting member coupled to a limiting slot. The auxiliary jaw further includes an exterior end having a pillow in contact with the driving wall and a pushing surface for working together with the first jaw to grip the workpiece under operation, an interior end, and a limiting slot.Type: ApplicationFiled: April 3, 2009Publication date: December 10, 2009Applicant: DANAHER TOOL LIMITED, TAIWAN BRANCHInventors: Hsien-Chung Tuan-Mu, Chung-Sung Li
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Publication number: 20090272236Abstract: A ratchetable open-ended wrench includes a handle H for a hand to grasp, a wrench head 100 located on one end of the handle, and a fastener room 160 located in the wrench head 100 for accommodating a workpiece W to be rotated. The wrench head 100 further includes a first jaw 110 having a first driving wall 114, a second jaw 120 having a second driving wall 124 facing the first driving wall 114, an inner wall 126 extending from the second driving wall 124 into the second jaw 120, a fastener-jaw room 128, an auxiliary jaw retracting opening 13, an auxiliary jaw 140 capable of longitudinally sliding into the auxiliary jaw retracting opening 130 in an elastic way, and an auxiliary jaw limiting member 150 coupled to a limiting slot 148. The auxiliary jaw 140 further includes an exterior end 142 having a pillow 142 in contact with the driving wall 126 and a pushing surface 144 for working together with the first jaw 110 to grip the workpiece W under operation, an interior end 146, and a limiting slot 148.Type: ApplicationFiled: June 10, 2008Publication date: November 5, 2009Inventor: Hsien-Chung TUAN-MU
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Publication number: 20090107303Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.Type: ApplicationFiled: April 10, 2008Publication date: April 30, 2009Inventors: Paul Steinweg, Hsien-Chung Tuan-Mu
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Publication number: 20080148907Abstract: A spanner comprises a box end that has an inner periphery consisting of a number of wall faces to define a first polygonal receiving space. Each wall face includes a groove defined therein. The grooves of the wall faces together define a second polygonal receiving space. At least one of the grooves includes a closed first end and an open second end.Type: ApplicationFiled: March 10, 2008Publication date: June 26, 2008Applicant: EASCO HAND TOOLS, INC.Inventors: David Ling, Hsien-Chung Tuan-Mu
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Patent number: 7340983Abstract: A spanner comprises a box end that has an inner periphery consisting of a number of wall faces to define a first polygonal receiving space. Each wall face includes a groove defined therein. The grooves of the wall faces together define a second polygonal receiving space. At least one of the grooves includes a closed first end and an open second end.Type: GrantFiled: June 28, 2004Date of Patent: March 11, 2008Assignee: Easco Hand Tools, Inc.Inventors: David Ling, Hsien-Chung Tuan-Mu
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Publication number: 20070277652Abstract: A reversible ratchet wrench includes a handle with a drive head that defmes a drive aperture and a through bore located adjacent thereto. A retaining recess slidably receives a pawl including drive teeth and a control recess. A direction control member is rotatably mounted in the through bore. A pressing member is mounted between the direction control member and the control recess of the pawl, and a ratchet wheel is rotatably received in the drive aperture. The ratchet wheel includes a first end having a first driving cavity, a second end having a second driving cavity, and a central portion disposed therebetween. The first and second ends of the ratchet wheel extend beyond opposing surfaces of the drive head, and the central portion of the ratchet wheel has an outer diameter that is greater than the outer diameters of the first and second ends.Type: ApplicationFiled: May 30, 2006Publication date: December 6, 2007Inventor: Hsien-Chung Tuan-Mu
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Patent number: D551042Type: GrantFiled: May 4, 2006Date of Patent: September 18, 2007Assignee: Lea Way Hand Tool CorporationInventor: Hsien Chung Tuan Mu
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Patent number: D551924Type: GrantFiled: May 4, 2006Date of Patent: October 2, 2007Assignee: Lea Way Hand Tool CorporationInventor: Hsien Chung Tuan Mu
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Patent number: D555995Type: GrantFiled: May 24, 2006Date of Patent: November 27, 2007Assignee: Lea Way Hand Tool CorporationInventor: Hsien-Chung Tuan Mu
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Patent number: D558006Type: GrantFiled: May 16, 2006Date of Patent: December 25, 2007Assignee: Lea Way Hand Tool CorporationInventor: Hsien Chung Tuan Mu
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Patent number: D559054Type: GrantFiled: March 21, 2007Date of Patent: January 8, 2008Assignee: Lea Way Hand Tool CorporationInventor: Hsien Chung Tuan Mu