Patents by Inventor Norman William Liefke

Norman William Liefke 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).

  • Patent number: 10415255
    Abstract: Disclosed is a handrail and railing assembly, which is made up of a handrail, a plurality of support frames, a movable corner, connecting sleeves and a corner connecting rod; wherein the handrail is connected by a plurality of handrail units and connecting sleeves, and connected by a movable corner or corner connecting rod at a corner; the spaced support frames are provided to hold the handrail. The handrail and railing assembly meets the strength requirements of different sites and can be adjusted according to the on-site installers.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: September 17, 2019
    Inventors: Chingyao Kuo, Norman William Liefke
  • Patent number: 10184267
    Abstract: A supporting mechanism for a glass fence is provided. The supporting mechanism has a base, a main body, two sets of anti-collision rubber for contacting with the glass fence, an height-adjustment block, an adjustment slider, and an installation slot for insertion of the glass fence in vertical direction. The installation slot is provided on the main body along a vertical direction of the main body, the installation slot divides the main body into two sub-bodies, each sub-body has an inner wall facing the installation slot. The height-adjustment block is provided at a lower end position of the installation slot, an inner space is provided within the height-adjustment block for receiving an LED device generating light. The adjustment slider selectively moves by an adjustment screw such that height of the height-adjustment block is adjustable.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: January 22, 2019
    Inventors: Chingyao Kuo, Norman William Liefke
  • Publication number: 20180258648
    Abstract: Disclosed is a handrail and railing assembly, which is made up of a handrail, a plurality of support frames, a movable corner, connecting sleeves and a corner connecting rod; wherein the handrail is connected by a plurality of handrail units and connecting sleeves, and connected by a movable corner or corner connecting rod at a corner; the spaced support frames are provided to hold the handrail. The handrail and railing assembly meets the strength requirements of different sites and can be adjusted according to the on-site installers.
    Type: Application
    Filed: March 7, 2017
    Publication date: September 13, 2018
    Inventors: Chingyao KUO, Norman William LIEFKE
  • Publication number: 20180002949
    Abstract: A supporting mechanism for a glass fence is provided. The supporting mechanism has a base, a main body, two sets of anti-collision rubber for contacting with the glass fence, an height-adjustment block, an adjustment slider, and an installation slot for insertion of the glass fence in vertical direction. The installation slot is provided on the main body along a vertical direction of the main body, the installation slot divides the main body into two sub-bodies, each sub-body has an inner wall facing the installation slot. The height-adjustment block is provided at a lower end position of the installation slot, an inner space is provided within the height-adjustment block for receiving an LED device generating light. The adjustment slider selectively moves by an adjustment screw such that height of the height-adjustment block is adjustable.
    Type: Application
    Filed: July 1, 2016
    Publication date: January 4, 2018
    Inventors: Chingyao KUO, Norman William LIEFKE
  • Patent number: 9822521
    Abstract: An assembly outdoor balcony are made up of a plurality of columns, cross beams, beams, adjustable hanging elements, wall-assembled hanging elements and balcony panels, wherein the columns are disposed at interval to form the whole periphery of the balcony; the cross beams can be quickly assembled onto the columns through a beam hanger; the adjustable hanging element allows the joint angle between two beams to be different depending on the environment and needs. All component elements are aluminum alloy materials, which are assembled by mutual engagement. Therefore, the assembly outdoor balcony can be assembled, disassembled and adjusted quickly based on the on-site environment.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: November 21, 2017
    Inventors: Chingyao Kuo, Norman William Liefke
  • Patent number: 9732528
    Abstract: An accessible passageway assembly is assembled by a plurality of railing units, a plurality of columns, a plurality of step plates and slope guide plates; specifically, the plurality of railing units are spaced by columns to form inner fences and outer fences of the passageway. A support bar is positioned between the lower end of columns of the inner fences and the lower end of columns of the outer fences. A platen is disposed above the support bar. The rear and front end of the support bar and the platen include an extending tongue piece respectively for fast snap-fit of the step plate and the slope guide plate of the passageway. The connection part of the railing unit and the column can be a movable hinge, such that the angle of the railing unit can be adjusted according to the passageway height difference and change, such that the accessible passageway can be quickly assembled and disassembled indoors or outdoors.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: August 15, 2017
    Inventors: Chingyao Kuo, Norman William Liefke
  • Patent number: 8869939
    Abstract: An extension ladder comprises a plurality of ladder sections, connection kits and transverse step beams. Each ladder section is a hollow rail, which can be interconnected by telescoping with each other. A snap-fit mechanism is provided between the upper ladder section and the lower ladder section to make them not slip when the ladder is extended. The upper end of each ladder section is provided with a connection kit. The upper end of the connection kit is provided with a fixed protuberant pin, an inside thereof is provided with a locking mechanism which is provided with a turning key. An outside of the connection kit is covered by the transverse step beam. When the upper and lower connection kits are close to each other, the protuberant pin of the lower connection kit pushes the turning key so that the locking mechanism of the upper connection kit can be unlocked.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: October 28, 2014
    Inventors: Ching Yao Kuo, Norman William Liefke
  • Publication number: 20110192679
    Abstract: An extension ladder (1) comprises a plurality of ladder sections (2), connection kits (3) and transverse step beams (5). Each ladder section is a hollow rail having different caliber, which can be interconnected by telescoping with each other. A snap-fit mechanism is provided between the upper ladder section and the lower ladder section to make them not slip when the extension ladder is extended. The upper end of each ladder section is provided with a connection kit transverse provided. The upper end of the connection kit is provided with a fixed protuberant pin (300), an inside thereof is provided with a locking mechanism (4b). The locking mechanism (4b) is provided with a turning key (440). An outside of the connection kit is covered by the transverse step beam.
    Type: Application
    Filed: September 25, 2008
    Publication date: August 11, 2011
    Inventors: Chingyao Kuo, Norman William Liefke
  • Patent number: 7503550
    Abstract: An enclosed fence railing set includes a set of posts with tips and fixing components for an upper beam and lower beam on both sides thereof. The fence railing set also includes a set of beams including an upper beam and a lower beam wherein the upper beam and lower beam match the fixing components and wherein there are railings between the sets of beams. A set of stakes are provided for fixing the posts. Each of the stakes includes a tube extending upwardly from the stake and a plate separating the stake and tube with a number of holes in the plate.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: March 17, 2009
    Inventor: Norman William Liefke
  • Publication number: 20080164451
    Abstract: An enclosed fence railing set includes a set of posts with tips and fixing components for an upper beam and lower beam on both sides thereof. The fence railing set also includes a set of beams including an upper beam and a lower beam wherein the upper beam and lower beam match the fixing components and wherein there are railings between the sets of beams. A set of stakes are provided for fixing the posts. Each of the stakes includes a tube extending upwardly from the stake and a plate separating the stake and tube with a number of holes in the plate.
    Type: Application
    Filed: January 10, 2007
    Publication date: July 10, 2008
    Inventor: Norman William Liefke
  • Patent number: 7316293
    Abstract: An extension ladder with improved mechanism includes a plurality of ladder sections, connection kits, locking mechanism, and transverse step portions; wherein each ladder section is a hollow rung, and the caliber of the rung becomes smaller when it is in a higher location. The upper ladder section and lower ladder section can be interconnected and fit each other; said connection kits are horizontally provided in the upper end of said ladder section. The internal part of said connection kit is provided with a locking mechanism to snap-fit into the through hole of said ladder section to secure the extension between each ladder section. The outside of said locking mechanism is covered by the transverse step portion, by the improved locking mechanism, the extension ladder can be assembled easily and firmly for providing superior safety to people, even when an external force is applied.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: January 8, 2008
    Inventors: Kuo-Ching Yao, Norman William Liefke
  • Publication number: 20070267252
    Abstract: An extension ladder with improved mechanism includes a plurality of ladder sections, connection kits, locking mechanism, and transverse step portions; wherein each ladder section is a hollow rung, and the caliber of the rung becomes smaller when it is in a higher location. The upper ladder section and lower ladder section can be interconnected and fit each other; said connection kits are horizontally provided in the upper end of said ladder section. The internal part of said connection kit is provided with a locking mechanism to snap-fit into the through hole of said ladder section to secure the extension between each ladder section. The outside of said locking mechanism is covered by the transverse step portion, by the improved locking mechanism, the extension ladder can be assembled easily and firmly for providing superior safety to people, even when an external force is applied.
    Type: Application
    Filed: May 17, 2006
    Publication date: November 22, 2007
    Inventors: Kuo-Ching Yao, Norman William Liefke