Patents by Inventor Helmut Kreller

Helmut Kreller 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: 11199011
    Abstract: The invention relates to a metal fitting for a toeboard of a scaffolding, comprising a metal fitting body extending in a longitudinal direction of the metal fitting body from a first end region of the metal fitting body designed for connection to a toeboard and/or connected to a toeboard to a second end region of the metal fitting body designed for securing on a scaffolding, wherein at least one securing protrusion is provided in the second end region of the metal fitting body extending substantially in the longitudinal direction of the metal fitting body, characterized in that at least one support protrusion is provided extending in a first transverse direction transverse to the longitudinal direction of the metal fitting body.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: December 14, 2021
    Assignee: WILHELM LAYHER VERWALTUNGS—GMBH
    Inventor: Helmut Kreller
  • Patent number: 10633872
    Abstract: A framework platform element, in particular for scaffolding, includes a framework platform body made from sheet metal material and extending in a longitudinal direction, with a stepping surface region providing a stepping surface on a top side and with side panel regions connecting to the stepping surface region in transition regions, formed by shaping the sheet metal material in two edge regions of the stepping surface region and situated at a distance from one another in a transverse direction. At least one side panel region has an end profile region, formed by shaping the sheet metal material, in an end region spaced apart from the transition region in a vertical direction, wherein in at least one transition region and/or in at least one end profile region, at least one curved shaped region is provided. A radius of curvature is less than or equal to a material thickness of the sheet metal material in at least sections in at least one curved shaped region.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: April 28, 2020
    Assignee: Wilhelm Layher Verwaltungs GmbH
    Inventor: Helmut Kreller
  • Publication number: 20200048917
    Abstract: The invention relates to a metal fitting for a toeboard of a scaffolding, comprising a metal fitting body extending in a longitudinal direction of the metal fitting body from a first end region of the metal fitting body designed for connection to a toeboard and/or connected to a toeboard to a second end region of the metal fitting body designed for securing on a scaffolding, wherein at least one securing protrusion is provided in the second end region of the metal fitting body extending substantially in the longitudinal direction of the metal fitting body, characterized in that at least one support protrusion is provided extending in a first transverse direction transverse to the longitudinal direction of the metal fitting body.
    Type: Application
    Filed: April 4, 2017
    Publication date: February 13, 2020
    Inventor: Helmut Kreller
  • Patent number: 10196830
    Abstract: A truss frame for a bridge and/or support includes two elongated, parallel longitudinally-extending post pipes having an outer circumference; two parallel crossbars extending perpendicularly to the post pipes; and a length-adjustable elongated diagonal element. The parts are hingedly and detachably bolted to one other. Two parallel connecting plates secured near each post pipe end extend away from one another on a common, imaginary plane containing the post pipe and crossbar longitudinal axes. Each crossbar and diagonal element has opposite ends hingedly and detachably bolted to a connecting plate. At least two rosettes are welded to each post pipe at a distance from one another corresponding to an integer multiple of a module scaffold modular size. A connecting body is welded to the connecting plate near at least two post pipe ends associated with the same crossbar and surrounds the respective post pipe outer circumference.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: February 5, 2019
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Publication number: 20180266123
    Abstract: A truss frame for a bridge and/or support includes two elongated, parallel longitudinally-extending post pipes having an outer circumference; two parallel crossbars extending perpendicularly to the post pipes; and a length-adjustable elongated diagonal element. The parts are hingedly and detachably bolted to one other. Two parallel connecting plates secured near each post pipe end extend away from one another on a common, imaginary plane containing the post pipe and crossbar longitudinal axes. Each crossbar and diagonal element has opposite ends hingedly and detachably bolted to a connecting plate. At least two rosettes are welded to each post pipe at a distance from one another corresponding to an integer multiple of a module scaffold modular size. A connecting body is welded to the connecting plate near at least two post pipe ends associated with the same crossbar and surrounds the respective post pipe outer circumference.
    Type: Application
    Filed: January 27, 2016
    Publication date: September 20, 2018
    Applicant: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut KRELLER
  • Publication number: 20180155938
    Abstract: A scaffold cross-bar of metal with a round-tube carrier profile of steel includes a round tube and has an outside diameter, and a U-shaped reinforcing profile of steel sheet. The U-shaped reinforcing profile has a base profile and two parallel profile legs which extend away from the base profile in the same direction at a transverse spacing from one another. Each profile leg has at least one opening for fastening and/or securing scaffold components on the scaffold cross-bar. The transverse spacing of the profile legs is smaller than 0.6 times the outside diameter of the round-tube carrier profile.
    Type: Application
    Filed: May 11, 2016
    Publication date: June 7, 2018
    Applicant: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut KRELLER
  • Publication number: 20180142479
    Abstract: A framework platform element, in particular for scaffolding, includes a framework platform body made from sheet metal material and extending in a longitudinal direction, with a stepping surface region providing a stepping surface on a top side and with side panel regions connecting to the stepping surface region in transition regions, formed by shaping the sheet metal material in two edge regions of the stepping surface region and situated at a distance from one another in a transverse direction. At least one side panel region has an end profile region, formed by shaping the sheet metal material, in an end region spaced apart from the transition region in a vertical direction, wherein in at least one transition region and/or in at least one end profile region, at least one curved shaped region is provided. A radius of curvature is less than or equal to a material thickness of the sheet metal material in at least sections in at least one curved shaped region.
    Type: Application
    Filed: May 20, 2016
    Publication date: May 24, 2018
    Inventor: Helmut Kreller
  • Patent number: 9435128
    Abstract: An overlap arrangement of at least two decking planks, for example for construction scaffolding, includes first and second decking planks. Each decking plank has a decking surface composed of sheet metal, which is provided with essentially round passage holes, which are delimited, in each instance, by a beaded and circumferential hole edge. The first decking plank and the second decking plank are braced, relative to one another, in releasable manner, using a locking screw composed of metal, to prevent displacement relative to one another in a displacement plane that runs parallel to their decking surfaces, and to prevent lift-off from one another.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 6, 2016
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Patent number: 9109370
    Abstract: The invention relates to a scaffolding post (25) made of metal, including a tube (26) and a tubular tube connector (27) integrally molded therewith. In a transition region between the tube connector (27) and the tube (26) a stop (46) is formed, the stop being in the form of an annular post-supporting end face (50) running perpendicularly to the longitudinal axis of the scaffolding post (25) and circumferentially around the longitudinal axis. The slide-on area (37) of the tube (26) has a plurality of indentations (86), each extending in the direction of the longitudinal axis of the scaffolding post (25) and each being designed with a tube inner cross-section reduction. The indentations are arranged distributed in the circumferential direction around the longitudinal axis of the scaffolding post (25) at regular intervals or equidistant and each extends continuously for a length in the tube slide-on region (37), starting directly from a tube-supporting end face in the direction of the tube connector (27).
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: August 18, 2015
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Patent number: 9080335
    Abstract: The invention relates to a scaffolding component (45) with at least one connection head (61) for forming a releaseable connection with a vertical scaffolding element (41) extending in the direction of a longitudinal axis (47). On this scaffolding element is fastened a projection (44) which extends transversely to its longitudinal axis (47) and which has an aperture (55) for the insertion of a wedge (62). The connection head has an upper head part (74) with an upper wedge opening (80) and a lower head part (75) with a lower wedge opening (81), for the wedge (62) which can be inserted through the wedge openings (80, 81). Disposed between the upper head part (74) and the lower head part (75) is a slot (67) which is open towards the front and which is intended for the fitting of the connection head (61) onto the projection (44).
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: July 14, 2015
    Assignee: WILHELM LAYHER VERWALTUNGS-GMBH
    Inventor: Helmut Kreller
  • Patent number: 8978822
    Abstract: The invention relates to a vertical frame made of metal, particularly a scaffolding frame, having at least one first vertical shaft (21) and a bar-shaped, horizontal transversal arm (23) extending away from the same, the shaft and arm being permanently connected to each other, having the following characteristics: a first perforated disk having a plurality of openings is permanently mounted to the shaft (21), wherein the perforated disk is disposed concentrically to the shaft (21) and surrounds the shaft (21) in a flange manner; at least one first mounting device is provided on the shaft (21) at a distance to the perforated disk for mounting a fall-protection means; the transversal arm (23) on one end thereof has a first connecting head, and on the second end thereof facing away from the first end has a second connecting head by which the transversal arm (23) can be secured, or is secured, on a second vertical shaft (21) via a second perforated disk equipped with a plurality of openings by forming a vertical
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: March 17, 2015
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Patent number: 8978823
    Abstract: An arrangement includes a scaffolding component having a connection head and a vertical scaffolding element extending in the direction of a longitudinal axis with a projection fastened thereto. A wedge is plugged, in a locking position, through two wedge openings in the connection head and through an aperture in the projection. Between the upper and lower head part of the connection head a slot is open towards the front and with which the connection head is plugged onto the projection. The slot has a shoulder of the upper head part which extends downwardly from horizontal upper slot surfaces formed in an insertion region of the slot and which is arranged above the horizontal upper boundary surface of the outer projection part. The shoulder is bounded downwardly with a horizontal shoulder slot surface via which the shoulder is supported on the horizontal upper boundary surface of the projection.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: March 17, 2015
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Publication number: 20150068011
    Abstract: A scaffold and method(s) for installing or removing such a scaffold that is constructed of at least two vertical frames and of at least two connecting elements that extend essentially horizontally, in each instance, includes at least one connecting element serving as a hip and/or back railing element, vertical supports having respective effective lengths essentially corresponding for example to the vertical distance of the attachment position for the hip and/or back railing element, and horizontal arms set onto one another to form transverse rungs, in each instance, of a ladder for allowing a person to climb up.
    Type: Application
    Filed: November 18, 2014
    Publication date: March 12, 2015
    Applicant: WILHELM LAYHER VERWALTUNGS-GMBH
    Inventor: Helmut KRELLER
  • Patent number: 8973707
    Abstract: A toe board of a scaffold system and a method of producing the toe board, the toe board configured to be attached to a working or walking surface of the scaffold in order to limit lateral movement upon the surface, the toe board made from a steel board unit having a hollow profile enclosed by covers and mounting units inserted at each end with multiple types of fastenings.
    Type: Grant
    Filed: January 21, 2008
    Date of Patent: March 10, 2015
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Patent number: 8931594
    Abstract: The invention relates to a prop (32.1, 32.3) for a three-dimensional framework, particularly a scaffold (20), comprising a fastening mechanism (38) for attaching a railing device (28) to the prop (32.1, 32.3). The invention also relates to a connecting assembly for a railing device (28), comprising at least one prop (32.1, 32.3) for a three-dimensional framework, especially a scaffold (20), and a railing device (28) which can be attached to the prop (32.1, 32.3) with the help of a fastening mechanism (38). Also disclosed is a method for attaching a railing device (28) to a prop (32.1, 32.3) for a three-dimensional framework, especially a scaffold (20), with the help of a fastening mechanism (38). The fastening mechanism (38) encompasses a locking element which can be swiveled about a swivel pin. In the locked position, the locking surface of the locking element lies across from a bearing surface (43) of a support element that is mounted on the prop (32.1, 32.3).
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: January 13, 2015
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Publication number: 20140030009
    Abstract: The invention relates to an arrangement (230) of a scaffolding component (45) having a connection head (61) and of a vertical scaffolding element (41) extending in the direction of a longitudinal axis (47). On this scaffolding element is fastened a projection (44) which extends transversely to the longitudinal axis (47) of the scaffolding element (41) away from the latter and onto which the connection head (61) is plugged. The projection (44) has an aperture (55.1) for plugging through a wedge (62). The connection head (61) has an upper head part (74) with an upper wedge opening (80) and a lower head part (75) with a lower wedge opening (81). The wedge is plugged, in a locking position (88), through the two wedge openings (80, 81) and through the aperture (55.1). Between the upper head part (74) and the lower head part (75) there is arranged a slot (67) which is open towards the front (79) and with which the connection head (61) is plugged onto the projection (44).
    Type: Application
    Filed: May 31, 2012
    Publication date: January 30, 2014
    Applicant: WILHELM LAYHER VERWALTUNGS-GMBH
    Inventor: Helmut Kreller
  • Publication number: 20130336709
    Abstract: The invention relates to a scaffolding post (25) made of metal, including a tube (26) and a tubular tube connector (27) integrally molded therewith. In a transition region between the tube connector (27) and the tube (26) a stop (46) is formed, the stop being in the form of an annular post-supporting end face (50) running perpendicularly to the longitudinal axis of the scaffolding post (25) and circumferentially around the longitudinal axis. The slide-on area (37) of the tube (26) has a plurality of indentations (86), each extending in the direction of the longitudinal axis of the scaffolding post (25) and each being designed with a tube inner cross-section reduction. The indentations are arranged distributed in the circumferential direction around the longitudinal axis of the scaffolding post (25) at regular intervals or equidistant and each extends continuously for a length in the tube slide-on region (37), starting directly from a tube-supporting end face in the direction of the tube connector (27).
    Type: Application
    Filed: January 9, 2012
    Publication date: December 19, 2013
    Applicant: WILHELM LAYHER VERWALTUNGS-GMBH
    Inventor: Helmut Kreller
  • Publication number: 20130330117
    Abstract: The invention relates to a scaffolding component (45) with at least one connection head (61) for forming a releaseable connection with a vertical scaffolding element (41) extending in the direction of a longitudinal axis (47). On this scaffolding element is fastened a projection (44) which extends transversely to its longitudinal axis (47) and which has an aperture (55) for the insertion of a wedge (62). The connection head has an upper head part (74) with an upper wedge opening (80) and a lower head part (75) with a lower wedge opening (81), for the wedge (62) which can be inserted through the wedge openings (80, 81). Disposed between the upper head part (74) and the lower head part (75) is a slot (67) which is open towards the front and which is intended for the fitting of the connection head (61) onto the projection (44).
    Type: Application
    Filed: May 31, 2012
    Publication date: December 12, 2013
    Applicant: WILHELM LAYHER VERWALTUNGS-GMBH
    Inventor: Helmut Kreller
  • Patent number: 8544605
    Abstract: A scaffolding (20) comprises vertical frame elements (22), crossbeams that extend therebetween, flooring units (27) which have mounting aids (28) to be mounted on the crossbeam (21), and at least one anti-release device (40) for securing the flooring units (27) against being released. The anti-release device (40) can be removably connected to the crossbeam (21) and has a securing member (41) which corresponds to the length of the crossbeam, is to be placed on the mounting aid (28), and is fitted with at least one hook-shaped fastening element (42) that penetrates a hole (33) located in the crossbeam and partially embraces the crossbeam (21) in the anti-release state. One end of the securing member (41) is provided with a pivotable plate which is fastened by means of a hinge and is pivoted from the open position into the locking position and retained by means of a spring mechanism (60).
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: October 1, 2013
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Publication number: 20130248290
    Abstract: An overlap arrangement of at least two decking planks, for example for construction scaffolding, includes first and second decking planks composed of metal. Each decking plank has a decking surface composed of sheet metal, which is provided with essentially round passage holes, which are delimited, in each instance, by a beaded and circumferential hole edge. The first decking plank and the second decking plank are braced, relative to one another, without play, in releasable manner, using a locking screw composed of metal, to prevent displacement relative to one another in a displacement plane that runs parallel to their decking surfaces, and to prevent lift-off from one another, with force fit and shape fit, wherein the locking screw is screwed in, with its thread, without any plastic deformation and without plastic widening of the hole edge of a passage hole of at least one of the decking planks.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 26, 2013
    Applicant: WILHELM LAYHER VERWALTUNGS-GMBH
    Inventor: Helmut KRELLER