Patents by Inventor Lawrence S. Wu
Lawrence S. Wu 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: 8245756Abstract: A pleated shade or Venetian blind apparatus capable of height adjustment comprising an upper elongated support; a lower elongated member that is manually adjustable up and down; primary lines extending through shade pleats or blind slats to suspend the bottom elongated member; primary rotors at the top elongated support to wind or engage the primary lines; at least one secondary line having operative connection to the primary lines; and rotary members acting on the secondary line or lines for counterbalancing suspension force exerted on the primary lines at different shade or blind height adjusted levels, including a spring coupled to the rotary members exerting force tending to entrain the secondary line or lines about the rotary members, for storage on at least one of the members.Type: GrantFiled: December 23, 2003Date of Patent: August 21, 2012Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 7036547Abstract: An assembly including a shade capable of height adjustment, comprising shade including multiple pleats, a roller, one strap that extends through multiple pleats of the assembly, and the at least one strap operatively connected with the roller to be rolled on the roller as the height of the shade is reduced, and to be un-rolled as the height of the shade is increased.Type: GrantFiled: September 2, 2003Date of Patent: May 2, 2006Assignee: ZipShade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 7000521Abstract: The method of cutting a pleated shade to selected length, said shade having pleats retained in pleated condition between longitudinally elongated first and second retainers, that includes the steps providing a blade having a cutting edge, orienting the blade to extend laterally relative to the retainers and/or pleats, with the blade edge presented toward the first retainer at an angle to that retainer, and urging the blade in a first direction toward the first retainer so that the blade edge cuts through the first retainer progressively in a lateral and second direction, and progressively laterally through the pleats and lower retainer, the pleats and/or retainers being adjustably laterally confined, and the first retainer and pleats being clamped in said first direction at the locus of cutting, by force transmission from the blade.Type: GrantFiled: May 21, 2004Date of Patent: February 21, 2006Assignee: ZipShade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 6991020Abstract: A pleated shade assembly capable of height adjustment without use of pull cords, comprising an upper elongated support; a lower elongated member that is manually adjustable up and down; primary lines extending through shade pleats to suspend the bottom elongated member; primary rotors at the top elongated support to entrain the primary lines; at least one secondary line having operative connection to the primary lines; and apparatus acting on the secondary line or lines for counterbalancing suspension force exerted on the primary lines at different shade height adjusted levels.Type: GrantFiled: February 10, 2003Date of Patent: January 31, 2006Assignee: ZipShade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 6948545Abstract: A method of controlling the vertical height of a window shade having a top and bottom, which includes providing shade upper support structure at or proximate the shade top; providing at least one substantially vertically elongated shade support line extending downwardly from the upper support structure, and providing shade lower support structure at or proximate the shade bottom; elevating or lowering the shade lower support structure relative to one or more support lines; and securing the shade lower support structure to the line or lines at a selected height position relative to the line length above the lower support structure, whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure effective securement to line or lines.Type: GrantFiled: April 26, 2004Date of Patent: September 27, 2005Assignee: Zipshade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 6889741Abstract: Apparatus for raising and lowering a window shade, comprising first and second lines movable together to raise and lower the shade, a third line, which is a control line, and first, second and third rotors to which the first and second and third lines are respectively connected, whereby when the third line is displaced, the third rotor rotates to effect rotation of the first and second rotors to displace the first and second dines to raise or lower the shade.Type: GrantFiled: September 9, 2002Date of Patent: May 10, 2005Assignee: Zipshade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 6837294Abstract: A pleated shade assembly capable of height adjustment without use of pull cords, comprising an upper elongated support; a lower elongated member that is manually adjustable up and down; primary lines extending through shade pleats to suspend the bottom elongated member; primary rotors at the top elongated support to entrain the primary lines; at least one secondary line having operative connection to the primary lines; and apparatus acting on the secondary line or lines for counterbalancing suspension force exerted on the primary lines at different shade height adjusted levels including dual rotary members exerting tensioning force on said secondary line or lines, and including a spring coupled to the dual rotary members exerting force tending to entrain the secondary line or lines about the dual rotary members, for storage on at least one of the members.Type: GrantFiled: July 21, 2003Date of Patent: January 4, 2005Assignee: Zipshade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Publication number: 20040231803Abstract: A pleated shade assembly capable of height adjustment without use of pull cords, comprising an upper elongated support; a lower elongated member that is manually adjustable up and down; primary lines extending through shade pleats to suspend the bottom elongated member; primary rotors at the top elongated support to entrain the primary lines; at least one secondary line having operative connection to the primary lines; and apparatus acting on the secondary line or lines for counterbalancing suspension force exerted on the primary lines at different shade height adjusted levels including dual rotary members exerting tensioning force on said secondary line or lines, and including a spring coupled to the dual rotary members exerting force tending to entrain the secondary line or lines about the dual rotary members, for storage on at least one of the members.Type: ApplicationFiled: July 21, 2003Publication date: November 25, 2004Inventors: Li-Ming Cheng, Lawrence S. Wu
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Publication number: 20040154758Abstract: A pleated shade or Venetian blind apparatus capable of height adjustment comprising an upper elongated support; a lower elongated member that is manually adjustable up and down; primary lines extending through shade pleats or blind slats to suspend the bottom elongated member; primary rotors at the top elongated support to wind or engage the primary lines; at least one secondary line having operative connection to the primary lines; and rotary members acting on the secondary line or lines for counterbalancing suspension force exerted on the primary lines at different shade or blind height adjusted levels, including a spring coupled to the rotary members exerting force tending to entrain the secondary line or lines about the rotary members, for storage on at least one of the members.Type: ApplicationFiled: December 23, 2003Publication date: August 12, 2004Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 6761202Abstract: A method of controlling the vertical height of a window shade having a top and bottom, which includes providing shade upper support structure at or proximate the shade top; providing at least one substantially vertically elongated shade support line extending downwardly from the upper support structure, and providing shade lower support structure at or proximate the shade bottom; elevating or lowering the shade lower support structure relative to one or more support lines; and securing the shade lower support structure to the line or lines at a selected height position relative to the line length above the lower support structure, whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure effective securement to line or lines.Type: GrantFiled: June 5, 2002Date of Patent: July 13, 2004Assignee: Zipshade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 6681831Abstract: A method of controlling the vertical height of a window shade having a top and bottom, which includes providing shade upper support structure at or proximate the shade top; providing at least one substantially vertically elongated shade support line extending downwardly from the upper support structure, and providing shade lower support structure at or proximate the shade bottom; elevating or lowering the shade lower support structure relative to one or more support lines; and securing the shade lower support structure to the line or lines at a selected height position relative to the line length above the lower support structure, whereby the height of the shade bottom can be quickly manually adjusted.Type: GrantFiled: May 17, 2002Date of Patent: January 27, 2004Assignee: Zipshade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu
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Patent number: 6443207Abstract: A method of controlling the vertical height of a window shade having a top and bottom, which includes providing shade upper support structure at or proximate the shade top; providing at least one substantially vertically elongated shade support line extending downwardly from the upper support structure, and providing shade lower support structure at or proximate the shade bottom; elevating or lowering the shade lower support structure relative to one or more support lines; and securing the shade lower support structure to the line or lines at a selected height position relative to the line length above the lower support structure, whereby the height of the shade bottom can be quickly manually adjusted by adjustment of the height of the shade lower support structure effective securement to line or lines.Type: GrantFiled: May 30, 2001Date of Patent: September 3, 2002Assignee: Zipshade Industrial (B.V.I.) Corp.Inventors: Li-Ming Cheng, Lawrence S. Wu