Darby Type Patents (Class 15/235.5)
  • Patent number: 12163340
    Abstract: The present invention provides an improved 3D notch trowel designed for the application of materials such as adhesive. The trowel features a blade with at least one notched edge, having a 3D profile, which can take various forms including a round, as well as square, rectangular, triangular, or similar shapes. This notched edge comprises a top portion and a bottom portion that define an opening, a depth, and a perimeter surface having an angle. This unique design allows for the creation of consistent and evenly distributed grooves in the adhesive material at various angles relative to the flooring surface. Additionally, the notched edge of the trowel is capable of being filed down multiple times while maintaining the same consistency of material application. This design enhances the longevity of the trowel.
    Type: Grant
    Filed: July 28, 2023
    Date of Patent: December 10, 2024
    Inventor: Steven Glenn Heidebrink
  • Patent number: 11473317
    Abstract: A power trowel blade that is made of non-rusting solid component material for use with a power trowel apparatus. The trowel blade include a mounting surface and an oppositely facing finishing surface. The finishing surface is flush and free of voids or protrusions. The flush finishing surface prevents surface material being collected as the trowel blade is used to finish surfaces to a hard finish.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: October 18, 2022
    Inventor: Jeffrey Lynn Snyder
  • Patent number: 10435893
    Abstract: The present invention relates to a method for laying tiles (2) on a laying substrate, in which, initially, tile adhesive (8) is applied to the laying substrate and the tiles (2) are subsequently laid in the tile adhesive (8), characterized in that, before applying the tile adhesive (8) to the laying surface, leveling strips (5) of the same height are affixed so that the top faces of the leveling strips (5) lie in a common reference plane, and in that the tile adhesive (8) is applied between the leveling strips (5) with some protrusion which is then, using a screeding board (9) guided along the top faces of the leveling strips (5), removed down to the level of the reference plane, generating a flat tile adhesive layer (11).
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: October 8, 2019
    Assignee: Schluter Systems L.P.
    Inventor: Werner Schlüter
  • Patent number: 10267015
    Abstract: Surface-formation equipment includes a blade including a beam; and an attachment structure having a proximal end connected to the blade and a distal end configured to be attached to a mobile unit. The surface-formation equipment may also include a blade including a beam; and at least one lateral wing pivot-connected to one end of the main section, the at least one lateral wing being able to be configured in an unfolded configuration and at least one folded position. The surface-formation equipment may include a cutting edge secured to the beam near the lower surface.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: April 23, 2019
    Assignee: 9277-9347 QUEBEC INC.
    Inventors: Jocelyn Landry, Martin Coulombe