Patents by Inventor Yen-Fen Lo
Yen-Fen Lo 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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Publication number: 20230255261Abstract: A cigar cutter includes a main body and a cutting member configured to move relative to each other, and a locking assembly for locking the cutting member. The main body includes at least one cutting lot extending horizontally, and a vertical through hole formed at the cutting sot. The cutting member includes at least one cutter configured to slide along the cutting slot and a positioning column, and the positioning column is configured to slide along a positioning slot correspondingly formed on the main body. The locking assembly is connected to one end of the positioning slot away from the cutting member and is used to lock or unlock the positioning column, such that the relative positions of the cutting member and the main body are secured during closing of the cigar cutter.Type: ApplicationFiled: March 9, 2022Publication date: August 17, 2023Inventor: Yen-Fen LO
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Patent number: 10532471Abstract: A folding knife configured for safe and rapid disassembly and reassembly includes an upper handle portion having two engaging grooves respectively adjacent to its two ends, and a lower handle portion having an engaging and pivotally connecting shaft and an engaging and locking shaft respectively adjacent to its two ends. The two shafts are engageable in the engaging grooves respectively. A blade is mounted around the engaging and pivotally connecting shaft and rotatable into and out of a space between the handle portions. A pushable locking member is rotatably connected to the engaging and locking shaft and can be pushed to allow or prevent disengagement between the engaging and locking shaft and the corresponding engaging groove. Thus, user only has to push the pushable locking member, the upper handle portion and the blade will be in a detachable from or securely connected to the lower handle portion as a whole.Type: GrantFiled: May 22, 2018Date of Patent: January 14, 2020Inventor: Yen-Fen Lo
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Publication number: 20190217488Abstract: A folding knife configured for safe and rapid disassembly and reassembly includes an upper handle portion having two engaging grooves respectively adjacent to its two ends, and a lower handle portion having an engaging and pivotally connecting shaft and an engaging and locking shaft respectively adjacent to its two ends. The two shafts are engageable in the engaging grooves respectively. A blade is mounted around the engaging and pivotally connecting shaft and rotatable into and out of a space between the handle portions. A pushable locking member is rotatably connected to the engaging and locking shaft and can be pushed to allow or prevent disengagement between the engaging and locking shaft and the corresponding engaging groove. Thus, user only has to push the pushable locking member, the upper handle portion and the blade will be in a detachable from or securely connected to the lower handle portion as a whole.Type: ApplicationFiled: May 22, 2018Publication date: July 18, 2019Inventor: Yen-Fen LO
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Patent number: 10035252Abstract: The present invention is to provide a lockback tool, which includes a workpiece body having a workpiece portion adjacent to an end thereof and a positioning slot disposed thereon adjacent to the other end thereof; a handle defining an accommodating space therein and having a resilient plate and at least one positioning stud disposed inside accommodating space so that, when the other end of workpiece body is inserted into accommodating space, positioning stud can be engaged into positioning slot; and a lockback element pivotally connected in the handle and having one end adjacent to the workpiece portion and the other end being pushed by the resilient plate so that the workpiece portion can be locked by the end of the lockback element or, when the other end being pressed by an external force against the resilient plate, the workpiece portion can be released from the end of the lockback element.Type: GrantFiled: February 26, 2016Date of Patent: July 31, 2018Inventor: Yen-Fen Lo
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Publication number: 20170203428Abstract: The present invention is to provide a lockback tool, which includes a workpiece body having a workpiece portion adjacent to an end thereof and a positioning slot disposed thereon adjacent to the other end thereof; a handle defining an accommodating space therein and having a resilient plate and at least one positioning stud disposed inside accommodating space so that, when the other end of workpiece body is inserted into accommodating space, positioning stud can be engaged into positioning slot; and a lockback element pivotally connected in the handle and having one end adjacent to the workpiece portion and the other end being pushed by the resilient plate so that the workpiece portion can be locked by the end of the lockback element or, when the other end being pressed by an external force against the resilient plate, the workpiece portion can be released from the end of the lockback element.Type: ApplicationFiled: February 26, 2016Publication date: July 20, 2017Inventor: Yen-Fen LO
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Patent number: 8863394Abstract: The present invention is to provide a folding knife having a blade pivotally connected to a handle. A resilient locking arm has a first end fixed inside to the handle and a second end extending slantingly toward the blade when the blade is received in the handle. A positioning plate is movably positioned in the handle, and has a first end extending outside to the handle. Once the blade is received in the handle, the positioning plate engages with the resilient locking arm. However, when the blade is rotated out of the handle completely, the second end of the resilient locking arm presses against the end of the blade in a locked position, and thereby the positioning plate disengages with the resilient locking arm and presses against the resilient locking arm to avoid the blade from being out of the locked position and rotated into the handle.Type: GrantFiled: April 20, 2011Date of Patent: October 21, 2014Inventor: Yen-Fen Lo
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Patent number: 8683702Abstract: A folding knife capable of preventing automatic folding, which includes a handle having first, second and third plates, and a blade pivotally connected between the first and second plates by a pivot. The second plate is provided with a resilient stopper having a first end fixed to the second plate and a second end extending toward the first plate in a slanting manner. The third plate has one side corresponding in position to the second plate and concavely provided with an engaging hole. When the blade is fully rotated out of the handle, the second end of the resilient stopper presses against one end of the blade and thereby keeps the blade fully rotated out of the handle. Thus, when a force applied to the blade is excessively large, the resilient stopper will not be shifted away from the position against the blade.Type: GrantFiled: June 29, 2011Date of Patent: April 1, 2014Inventor: Yen-Fen Lo
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Patent number: 8458913Abstract: The present invention is to provide an assisted-opening folding knife, which includes a handle having a first positioning groove and a first recess, a blade capable of pivotally springing out of the handle, and a pushing device. A first post on the blade is moved along the first recess while being rotated into the handle, and a second post on the blade is exposed outside the handle while being received in the handle. The pushing device includes a pushing element located in the first positioning groove and a second spring provided between the pushing element and the first positioning groove, so as for the pushing element to move along the groove. Thus, while the blade is rotated into the handle, the first post presses and passes the tip of the pushing element and is then blocked by the pushing element, thereby preventing the blade from springing out of the handle.Type: GrantFiled: March 2, 2011Date of Patent: June 11, 2013Inventor: Yen-Fen Lo
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Publication number: 20130133205Abstract: The present invention is to provide an assisted opening folding knife, which includes a handle, a blade pivotally connected to the handle, a sliding key, and a first resilient element having one end positioned in the handle and an opposite end pressing against an end of the blade. The sliding key is provided adjacent to a front end of the handle, and has a sliding portion exposed from the handle and a pressing portion opposite to the sliding portion. When the blade is received in the handle and the sliding portion is driven to move the sliding key and release the blade, the pressing portion presses the blade to rotate a predetermined angle for enabling the first resilient element to pop the blade out of the handle. Thus, a user only has to slide the sliding key to release and pop the blade out of the handle automatically.Type: ApplicationFiled: January 11, 2012Publication date: May 30, 2013Inventor: Yen-Fen LO
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Patent number: 8438738Abstract: The present invention is to provide a safety folding knife comprising a blade having an end pivotally coupled to an end of a handle, such that the other end of the blade can be rotated out of or into the handle. The handle includes an elastic stop plate therein, which has an end fixed onto the handle and the other end tilted and extended towards a side of the blade. When the blade is turned fully out of the handle, the other end of the elastic stop plate can be abutted against the end of the blade so as to maintain the blade in a fully opened state, and a resisting block installed inside the handle then moves and firmly blocks the elastic stop plate to avoid the blade from being accidentally turned backward to the handle.Type: GrantFiled: March 30, 2011Date of Patent: May 14, 2013Inventor: Yen-Fen Lo
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Publication number: 20120291291Abstract: The present invention is to provide a folding knife capable of preventing automatic folding, which includes a handle having first, second and third plates, and a blade pivotally connected between the first and second plates by a pivot. The second plate is provided with a resilient stopper having a first end fixed to the second plate and a second end extending toward the first plate in a slanting manner. The third plate has one side corresponding in position to the second plate and concavely provided with an engaging hole. When the blade is fully rotated out of the handle, the second end of the resilient stopper presses against one end of the blade and thereby keeps the blade fully rotated out of the handle. Thus, when a force applied to the blade is excessively large, the resilient stopper will not be shifted away from the position against the blade.Type: ApplicationFiled: June 29, 2011Publication date: November 22, 2012Inventor: Yen-Fen Lo
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Publication number: 20120222314Abstract: The present invention is to provide an assisted-opening folding knife, which includes a handle having a first positioning groove and a first recess, a blade capable of pivotally springing out of the handle, and a pushing device. A first post on the blade is moved along the first recess while being rotated into the handle, and a second post on the blade is exposed outside the handle while being received in the handle. The pushing device includes a pushing element located in the first positioning groove and a second spring provided between the pushing element and the first positioning groove, so as for the pushing element to move along the groove. Thus, while the blade is rotated into the handle, the first post presses and passes the tip of the pushing element and is then blocked by the pushing element, thereby preventing the blade from springing out of the handle.Type: ApplicationFiled: March 2, 2011Publication date: September 6, 2012Inventor: Yen-Fen LO
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Publication number: 20120198701Abstract: The present invention is to provide a safety folding knife comprising a blade having an end pivotally coupled to an end of a handle, such that the other end of the blade can be rotated out of or into the handle. The handle includes an elastic stop plate therein, which has an end fixed onto the handle and the other end tilted and extended towards a side of the blade. When the blade is turned fully out of the handle, the other end of the elastic stop plate can be abutted against the end of the blade so as to maintain the blade in a fully opened state, and a resisting block installed inside the handle then moves and firmly blocks the elastic stop plate to avoid the blade from being accidentally turned backward to the handle.Type: ApplicationFiled: March 30, 2011Publication date: August 9, 2012Inventor: Yen-Fen Lo
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Publication number: 20120180320Abstract: The present invention is to provide a folding knife having a blade pivotally connected to a handle. A resilient locking arm has a first end fixed inside to the handle and a second end extending slantingly toward the blade when the blade is received in the handle. A positioning plate is movably positioned in the handle, and has a first end extending outside to the handle. Once the blade is received in the handle, the positioning plate engages with the resilient locking arm. However, when the blade is rotated out of the handle completely, the second end of the resilient locking arm presses against the end of the blade in a locked position, and thereby the positioning plate disengages with the resilient locking arm and presses against the resilient locking arm to avoid the blade from being out of the locked position and rotated into the handle.Type: ApplicationFiled: April 20, 2011Publication date: July 19, 2012Inventor: Yen-Fen Lo