Patents by Inventor Jianqun Li
Jianqun Li 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: 9970213Abstract: The present invention relates to a metal protective net, including: multiple steel wires arranged in parallel; multiple metal connecting sheets arranged in parallel, where the metal connecting sheets and the steel wires are arranged to intersect with each other at multiple intersections without being connected; insulating members which are provided between the steel wires and the metal connecting sheets and located at the intersections, and fixedly connected therewith; and connecting terminals, where both ends of each steel wire each are connected with one connecting terminal, and both ends of each metal connecting sheet each are connected with one connecting terminal; and a monitoring device electrically connected with the connecting terminals. The steel wires and the metal sheets, which form the metal protective net, are not electrically conductive with each other, forming many individual loops. If the metal net is broken, an alarm can be sent by the monitoring device.Type: GrantFiled: April 20, 2017Date of Patent: May 15, 2018Assignee: Beijing Long Fly Science and Technology Co. Ltd.Inventors: Jianqun Li, Jingguo Yao, Heshen Mao
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Publication number: 20170306642Abstract: The present invention relates to a metal protective net, including: multiple steel wires arranged in parallel; multiple metal connecting sheets arranged in parallel, where the metal connecting sheets and the steel wires are arranged to intersect with each other at multiple intersections without being connected; insulating members which are provided between the steel wires and the metal connecting sheets and located at the intersections, and fixedly connected therewith; and connecting terminals, where both ends of each steel wire each are connected with one connecting terminal, and both ends of each metal connecting sheet each are connected with one connecting terminal; and a monitoring device electrically connected with the connecting terminals. The steel wires and the metal sheets, which form the metal protective net, are not electrically conductive with each other, forming many individual loops. If the metal net is broken, an alarm can be sent by the monitoring device.Type: ApplicationFiled: April 20, 2017Publication date: October 26, 2017Inventors: Jianqun Li, Jingguo Yao, Heshen Mao
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Patent number: 7950081Abstract: This invention relates to a folding mechanism for a playard, which comprises first and second joints substantially cylindrical in shape. The joints have arcuate plates and stops that cooperative with each other to effect the rotation between the joints, so that the changing table can be moved between an operation position and a storage position. This invention may avoid accidental collapse of the changing table, and enable the users to conveniently fold/unfold the changing table single handed.Type: GrantFiled: July 25, 2007Date of Patent: May 31, 2011Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Patent number: 7748782Abstract: In accordance with one embodiment, tilt adjustment mechanism mounted on a child safety seat is provided, the tilt adjustment mechanism including: a seat portion having a recess; and a support block pivotally connected to the seat portion having a first protruding portion, the support block being rotated relative to the seat portion between a first position at which the recess of the seat portion is engaged with the first protruding portion of the support block and a second position at which the recess of the seat portion is disengaged from the first protruding portion of the support block for varying an angle between the seat portion and the support block.Type: GrantFiled: September 11, 2006Date of Patent: July 6, 2010Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Patent number: 7631935Abstract: A child car seat device with wing components includes a seat assembly, a backrest assembly and a headrest assembly, which are each connected together. The headrest assembly includes a headrest body, two headrest wing components, and two pivots passing through the headrest body and headrest wing components. Each pivot is retained by a fastener or a tab extending from the headrest wing component. The headrest body has a plurality of grooves and the headrest wing component has a rib. An angle defined between the headrest wing component and the headrest body can be changed by engaging the rib within different grooves. The headrest body has a stopper so that the headrest wing component cannot be pivotally rotated further outwards when it abuts against the stopper. The structures of the backrest assembly are similar to those of the headrest assembly. In addition, the seat device may be provided with the headrest wing components and/or backrest wing components.Type: GrantFiled: July 31, 2006Date of Patent: December 15, 2009Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Patent number: 7581269Abstract: A changing table for a playard has an upper end rail member, a pair of upper side rail members, and a pair of comer pieces connected to the upper end rail member and upper side rail members respectively. The changing table is mounted on top of the playard, having a first rail disposed on top of the upper end rail member a second rail opposed to the first rail, and a pair of side rails respectively connected to the first and second rails. Each respective side rail has a first portion connected to the first rail, and a second portion connected to the second rail. The first portion is connected to the second portion at an angle so that a portion of the side rail is disposed below the upper side rail members of the playard.Type: GrantFiled: March 13, 2007Date of Patent: September 1, 2009Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Patent number: 7464420Abstract: The present invention provides an infant bed including a frame body that is movable between a stretched state and a collapsed state in which the frame body includes: a top frame having a first top frame and a second top frame pivoted with each other; a first leg and a second leg each having an upper end pivotally connected to the top frame and a sliding member movably mounted on each of the first leg and the second leg; a plurality of support frames in which two ends of each support frame being pivotally connected to the top frame and the sliding member respectively; and two links pivoting to each other at one end and the other end of each link is connected to the sliding member; wherein when the frame body is in the stretched state, the links restrict the movement of the sliding member and the first and second top frames of the top frame are in the same plane; and wherein when the frame body is moved from the stretched state to the collapsed state, the sliding member moving along the first leg and the secondType: GrantFiled: November 28, 2006Date of Patent: December 16, 2008Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Publication number: 20080098530Abstract: A changing table for a playard comprises an upper end rail member, a pair of upper side rail members, and a pair of comer pieces connected to the upper end rail member and upper side rail members respectively. The changing table is mounted on top of the playard, and characterized in that: a first rail is disposed on top of the upper end rail member a second rail opposed to the first rail, and a pair of side rails are respectively connected to the first and second rails. The pair of side rails comprises a first portion connected to the first rail, and a second portion connected to the second rail. The first portion is connected to the second portion at an angle so that a portion of the side rail is disposed below the upper side rail members of the playard.Type: ApplicationFiled: March 13, 2007Publication date: May 1, 2008Applicant: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Publication number: 20080034506Abstract: This invention relates to a folding mechanism for a playard, which comprises first and second joints substantially cylindrical in shape. The joints have arcuate plates and stops that cooperative with each other to effect the rotation between the joints, so that the changing table can be moved between an operation position and a storage position. This invention may avoid accidental collapse of the changing table, and enable the users to conveniently fold/unfold the changing table single handed.Type: ApplicationFiled: July 25, 2007Publication date: February 14, 2008Applicant: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Publication number: 20080000023Abstract: The present invention provides an infant bed including a frame body that is movable between a stretched state and a collapsed state in which the frame body includes: a top frame having a first top frame and a second top frame pivoted with each other; a first leg and a second leg each having an upper end pivotally connected to the top frame and a sliding member movably mounted on each of the first leg and the second leg; a plurality of support frames in which two ends of each support frame being pivotally connected to the top frame and the sliding member respectively; and two links pivoting to each other at one end and the other end of each link is connected to the sliding member; wherein when the frame body is in the stretched state, the links restrict the movement of the sliding member and the first and second top frames of the top frame are in the same plane; and wherein when the frame body is moved from the stretched state to the collapsed state, the sliding member moving along the first leg and the secondType: ApplicationFiled: November 28, 2006Publication date: January 3, 2008Applicant: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Publication number: 20070228792Abstract: A child car seat device with wing components includes a seat assembly, a backrest assembly and a headrest assembly, which are connected each other. The headrest assembly includes a headrest body, two headrest wing components, and two pivots passing through the headrest body and headrest wing components. Each pivot is retained by a fastener or a tab extending from the headrest wing component. The headrest body has a plurality of grooves and the headrest wing component has a rib. An angle defined between the headrest wing component and the headrest body can be changed by engaging the rib within different grooves. The headrest body has a stopper so that the headrest wing component cannot be pivotally rotated further outwards when it abuts against the stopper. The structures of the backrest assembly are similar to those of the headrest assembly. In addition, the seat device may be provided with the headrest wing components and/or backrest wing components.Type: ApplicationFiled: July 31, 2006Publication date: October 4, 2007Applicant: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Publication number: 20070069567Abstract: A child car seat with an adjustable armrest includes a backrest, a seat base mounted with the backrest, two armrests mounted with the seat base, two intermediate pieces engaged with the seat base respectively at two sides thereof, two controlling pieces slidably engaged respectively with the two intermediate pieces, and two elastic pieces 26 respectively mounted between the controlling piece and intermediate piece. Each controlling piece has a guiding portion and a wing extending laterally from the guiding portion. Each armrest has a longitudinal passage and a plurality of lateral slots. When the wing is received within one of the slots, the armrest is secured at a predetermined height. When the controlling piece is pressed to the extent that the wing does not received within the slots, the armrest can be slid up and down under guidance of the guiding portion and passage.Type: ApplicationFiled: November 22, 2005Publication date: March 29, 2007Applicant: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Publication number: 20070057546Abstract: In accordance with one embodiment, tilt adjustment mechanism mounted on a child safety seat is provided, the tilt adjustment mechanism including: a seat portion having a recess; and a support block pivotally connected to the seat portion having a first protruding portion, the support block being rotated relative to the seat portion between a first position at which the recess of the seat portion is engaged with the first protruding portion of the support block and a second position at which the recess of the seat portion is disengaged from the first protruding portion of the support block for varying an angle between the seat portion and the support block.Type: ApplicationFiled: September 11, 2006Publication date: March 15, 2007Applicant: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Patent number: 7185952Abstract: An adjusting device for rotatable armrest of a child car seat is provided. The adjusting device comprises an armrest support; an armrest pivotally coupled to the armrest support; a button operably disposed in the armrest; and an engaging assembly movably disposed in the armrest between the button and the armrest support and constructed such that the armrest can be locked in position or can be pivotally adjusted with respective to the armrest support by selective alignment between the button and the engaging assembly and a selective engagement/disengagement between the engaging assembly and the armrest support.Type: GrantFiled: March 30, 2006Date of Patent: March 6, 2007Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Patent number: D552014Type: GrantFiled: April 24, 2006Date of Patent: October 2, 2007Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li
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Patent number: D578044Type: GrantFiled: June 6, 2007Date of Patent: October 7, 2008Assignee: Wonderland Nurserygoods Co., Ltd.Inventors: Shun-Min Chen, Jianqun Li