Lateral Prop Patents (Class 182/172)
  • Patent number: 10378278
    Abstract: Disclosed is a smart ladder. The smart ladder may be A-frame type of ladders, such as A-frame ladders and A-frame platform ladders. The smart ladder includes right and left outrigger leg units which are swiveled coupled to the right and left sides of the ladder to provide side support. The ladder includes brace units facilitate in folding and unfolding of the ladder as well as the outrigger legs. An electronic system, which includes a sensor network, a processor and a warning system, is provided. The sensor network senses side inclination angle of the ladder and side force on the outriggers and predict potential hazards from exceeding load and angle thresholds. This enhances safe operation of the ladder and avoids injuries to the user and others in the vicinity.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: August 13, 2019
    Assignee: Sentron Engineering (S) Pte Ltd
    Inventor: Heng Hung Tang
  • Patent number: 9879481
    Abstract: A base extending mechanism is provided for a ladder in the form of pivotable lower leg sections which can be independently rotated outwards to provide a wider ladder base. This extension of the ladder base is complementary to and supported by a compatible ladder levelling mechanism.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: January 30, 2018
    Inventor: Michael Patrick Fitzgerald
  • Patent number: 9347263
    Abstract: An extendable ladder having a collapsed mode and an extended mode, characterized in that when the ladder is transformed from the collapsed mode to the extended mode, at least one ground stabilizer extends laterally from the ladder to widen the footprint of the ladder.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: May 24, 2016
    Assignee: TELETOWER.COM LIMITED
    Inventor: Richard Weston
  • Patent number: 8973710
    Abstract: The present invention relates to ladders and, more particularly, various configurations of ladders including straight and extension ladders, as well as to methods relating to the use and manufacture of such ladders. In accordance with one embodiment of the present invention, a ladder is provided that includes a first pair of spaced apart rails and a plurality of rungs extending between and coupled to the first pair of spaced apart rails. The ladder also includes a pair of lateral support members, wherein each support member is selectively displaceable in a lateral direction relative to an associated rail. Additionally, the ladder includes a pair of adjustable legs, each leg having a first end slidably coupled to an associated rail of the first pair of spaced apart rails and being slidably coupled to an associated lateral support member.
    Type: Grant
    Filed: January 3, 2013
    Date of Patent: March 10, 2015
    Assignee: Wing Enterprises, Incorporated
    Inventors: N. Ryan Moss, Gary M. Jonas, Chad Grotegut, Sean R. Peterson, Brian B. Russell, Stephen E. Boynton, Ryan Crawford, Darius S. Penrod
  • Patent number: 8701828
    Abstract: The present invention is used on stepladders that are structured to provide improved lateral stability, step support and equipment/supplies support for stepladder users. The stepladder may have a step element rotatably attached to a support element at a top platform or a first step element rotatably attached to a second step element adjacent a top step. A hinged strut may be attached at opposed ends between the opposed elements intermediate the ladder top and the ladder base. A plurality of steps may be spaced apart and attached between step rails of step elements. A lateral support leg may be rotatably attached at a top end to each of the step rails intermediate a second step and a third step from the ladder top and a hinged leg strut may be attached at opposed ends between each of the support rails and lateral support legs.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: April 22, 2014
    Inventor: Martin S Matthew
  • Patent number: 8607932
    Abstract: A ladder stabilizing attachment for a ladder is disclosed. The device is basically made of two or more long variable length stabilizing legs FIGS. (1) and (11) attached to the upper part of a ladder by universal joints FIGS. (9) and (9A), and capable of forming a triangular or multi-angular pyramid with the ladder. The legs can be independently positioned to give greater lateral stability, as well reducing slide out tendency of the ladder base. The foot sockets of the stabilizing legs FIG. (5) are designed to minimize overloading and movement due to ladder flexing. The device is constructed so that it can be built into new ladders, and readily adapted for and fitted to most existing ladders.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: December 17, 2013
    Inventors: William Albert Cooper, Rosemary Jennings Cooper
  • Patent number: 8602162
    Abstract: The safety ladder may be an extension ladder having two or more relatively sliding sections, and incorporates a number of safety devices. The lower end of the ladder incorporates two opposed lateral stabilizers and two outwardly extending stabilizers, i.e., extending from the opposite face of the ladder from the structure against which the ladder is placed. The upper end of the ladder includes a pair of articulating lateral arms that brace against the structure against which the ladder is deployed, and articulating clamps or straps for securing the ladder to the structure. The medial portion of the ladder includes a handrail extending from each ladder rail. All of these devices may be retracted, collapsed, and/or folded for compact storage and transport when not in use. The entire ladder, i.e., rails, rungs, as well as the various safety components attached thereto, is coated with an electrically non-conductive coating for additional safety.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: December 10, 2013
    Assignee: King Fahd University of Petroleum and Minerals
    Inventors: Mehmet Dondurur, Ahmet Z. Sahin
  • Patent number: 8485316
    Abstract: A ladder system is disclosed which allows for stabilizing a ladder, on multiple surfaces, without the need for a second person or a great deal of setup time. The collapsible ladder system includes a larger ladder section and a smaller ladder strut section that is pivotally connected at a point which is at or below the midpoint of the larger ladder section. The larger ladder section and smaller ladder strut section are connected by a rigid adjustable linkage, or spreader, at a point that is below the pivotable connection. The ladder further includes a means for stability on a variety of surfaces. At the ground contacting point, the point where the ladder side rail ends and the ground meet, there are adjustable gripping feet, which can be independently or in combination vertically or angularly adjusted for maximum stability.
    Type: Grant
    Filed: April 3, 2009
    Date of Patent: July 16, 2013
    Assignee: Lock N Climb, LLC
    Inventors: Floyd LaVern Vestal, Jeffrey A. Green
  • Patent number: 8424642
    Abstract: A stabilizer for use with a ladder including a first elongated portion terminating in a bracket securing to a frame location of the ladder and a second portion telescopically connected to the first portion and terminating in angled foot support. The bracket includes a first component pivotally secured to the first elongated portion and a second inter-engageable component secured to the ladder. The first elongated component exhibits a pair of outer spaced and extending portion between which extends the second portion. A pivotal handle is located at an interface between the first and second elongated portions and exhibits an engaging surface for releasably locking the first and second elongated portions together.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: April 23, 2013
    Inventor: James D. Lietz
  • Patent number: 8365865
    Abstract: The present invention relates to ladders and, more particularly, various configurations of ladders including straight and extension ladders, as well as to methods relating to the use and manufacture of such ladders. In accordance with one embodiment of the present invention, a ladder is provided that includes a first pair of spaced apart rails and a plurality of rungs extending between and coupled to the first pair of spaced apart rails. The ladder also includes a pair of lateral support members, wherein each support member is selectively displaceable in a lateral direction relative to an associated rail. Additionally, the ladder includes a pair of adjustable legs, each leg having a first end slidably coupled to an associated rail of the first pair of spaced apart rails and being slidably coupled to an associated lateral support member.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: February 5, 2013
    Assignee: Wing Enterprises, Inc.
    Inventors: N. Ryan Moss, Gary M. Jonas, Chad Grotegut, Sean R. Peterson, Brian B. Russell, Stephen E. Boynton, Ryan Crawford, Darius S. Penrod
  • Publication number: 20120168253
    Abstract: A ladder stabilizer for use with a ladder having a pair of side rails with rungs extending therebetween, the ladder stabilizer comprising first and second rear legs designed to extend rearwardly of the ladder, first and second lateral legs designed to extend laterally of the ladder, the first and second rear legs being interconnected with each other, the first and second rear legs also being connected to a respective side rail of the ladder, with flexible cables extending between the lateral legs and the first interconnecting member.
    Type: Application
    Filed: November 3, 2011
    Publication date: July 5, 2012
    Inventor: Daniel McMurray
  • Publication number: 20120103727
    Abstract: An outrigger stabilizer combined with a ladder includes a telescoped outer tube and inner elongated member with a one way brake freely allowing telescoping movement of the inner member out of the outer tube to automatically adjust to engage the ground but instantly locking together when any collapsing movement is attempted to brace the ladder in any adjusted position.
    Type: Application
    Filed: December 8, 2011
    Publication date: May 3, 2012
    Inventor: Paul V. Ramirez
  • Publication number: 20110067954
    Abstract: A ladder safety that prevents sideways tipping accidents having a pair of struts extending outwardly and downward from the lower rails of the ladder with the struts making contact with a base surface or the ground. The struts can be clamped or pinned to the ladder, or they can be attached to a horizontal bar or other member that passes through one of the hollow rungs of the ladder. These struts can be telescoping with pins or other devices to allow adjustment. The struts can be fixed or removable, and can rotate and pivot to any angle. Each of the struts can further include a shoe that contacts the base surface or ground to provide extra stability. The shoe can be angled so that it is flat on the ground at the desired angle. A second pair of similar struts near the top of the ladder can act as roof braces, while at least one extender leg can extend one ladder leg to be longer than the other.
    Type: Application
    Filed: March 12, 2010
    Publication date: March 24, 2011
    Inventor: Clifton Deal
  • Publication number: 20110017549
    Abstract: A stabilizer for use with a ladder including a first elongated portion terminating in a bracket securing to a frame location of the ladder and a second portion telescopically connected to the first portion and terminating in angled foot support. The bracket includes a first component pivotally secured to the first elongated portion and a second inter-engageable component secured to the ladder. The first elongated component exhibits a pair of outer spaced and extending portion between which extends the second portion. A pivotal handle is located at an interface between the first and second elongated portions and exhibits an engaging surface for releasably locking the first and second elongated portions together.
    Type: Application
    Filed: July 27, 2010
    Publication date: January 27, 2011
    Inventor: James D. Lietz
  • Publication number: 20110011678
    Abstract: Expandable load bearing device for use on a ladder and comprising an outer member (20), an inner member (21) movable within the outer member, and ratchet means having a pawl (26) attachable to the outer member and a rack (22) attachable to the inner member, the pawl being movable into and out of engagement with the rack to prevent the movement of the inner member towards the outer member, and the pawl having a shoulder (36d) arranged to bear upon a load transfer member (24) on the outer member when the pawl is in engagement with the rack.
    Type: Application
    Filed: March 26, 2009
    Publication date: January 20, 2011
    Inventor: Lance Rodney Sheffield
  • Publication number: 20100300805
    Abstract: The present invention relates to ladders and, more particularly, various configurations of ladders including straight and extension ladders, as well as to methods relating to the use and manufacture of such ladders. In accordance with one embodiment of the present invention, a ladder is provided that includes a first pair of spaced apart rails and a plurality of rungs extending between and coupled to the first pair of spaced apart rails. The ladder also includes a pair of lateral support members, wherein each support member is selectively displaceable in a lateral direction relative to an associated rail. Additionally, the ladder includes a pair of adjustable legs, each leg having a first end slidably coupled to an associated rail of the first pair of spaced apart rails and being slidably coupled to an associated lateral support member.
    Type: Application
    Filed: February 26, 2010
    Publication date: December 2, 2010
    Applicant: WING ENTERPRISES, INCORPORATED
    Inventors: N. Ryan Moss, Gary M. Jonas, Chad Grotegut, Sean R. Peterson, Brian B. Russell, Stephen E. Boynton, Ryan Crawford, Darius S. Penrod
  • Patent number: 7757814
    Abstract: A ladder stabilizer for ladders with tubular rungs, includes a rigid stabilizer bar having a top, a bottom, a first end and a second end. A first leg extends downwardly below the bottom of the stabilizer bar at the first end and a second leg extends downwardly below the bottom of the stabilizer bar at the second end. A rung attachment bar is provided which is adapted to extend through a tubular rung of a ladder. The rung attachment bar has a first end and a second end. Clamps are provided for securing the rung attachment bar in parallel spaced relation to the stabilizer bar.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: July 20, 2010
    Assignee: Ladder Stabilizerz Inc.
    Inventors: Stephen Pleadwell, Martin Claussen
  • Patent number: 7753334
    Abstract: The invention is a window safety harness which can be clamped to the frame of a window and which provides a solid anchor point for a person working around the window. The device includes a bar for placement inside the window, a bar for placement outside the window, and a connecting piece which holds the bars in rigid, spaced apart relation to each other. Each end of both the inside and the outside bar have contact pads which are configured to contact the window frame. They also include a tightening mechanism which tightens the contact pads against the window frame and secures the device in the window frame. An anchor point allows a worker to attach himself to the anchor point for work outside the window, or to anchor a line to the window frame.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: July 13, 2010
    Inventor: James L. Schreiber
  • Publication number: 20090107765
    Abstract: An extension ladder stabilizer includes a pair of generally elongated, spaced-apart ladder mount members; a pair of generally elongated stabilizer legs swivelly carried by the pair of ladder mount members, respectively; a pair of leg braces having a pair of leg receptacles, respectively, swivelly carried by the pair of ladder mount members, respectively. In a functional or ladder-stabilizing configuration of the extension ladder stabilizer, the pair of ladder mount members is adapted to receive the pair of stabilizer legs which in turn engage the ground or floor and the pair of leg receptacles is adapted to removably receive the pair of stabilizer legs, respectively. A stabilized extension ladder is also disclosed.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Inventor: Clyde Germond
  • Publication number: 20090045013
    Abstract: A ladder stabilizer for use with a ladder having a pair of side rails with rungs extending therebetween, the ladder stabilizer comprising first and second rear legs designed to extend rearwardly of the ladder, first and second lateral legs designed to extend laterally of the ladder, the first and second rear legs being interconnected with each other, the first and second rear legs also being connected to a respective side rail of the ladder, with flexible cables extending between the lateral legs and the first interconnecting member.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 19, 2009
    Inventor: Daniel McMurray
  • Publication number: 20080185225
    Abstract: A step ladder stabilizer for mounting behind the front step portion of a step ladder and having two adjusting legs which adjust as a slide moves vertically along a channel having a bracket at each end of the channel for attaching to the rear of the ladder steps. Within each of the steps is an adjustable extension leg used for various stability requirements. When not in use, the ladder stabilizer may be closed flush against the back of the ladder steps or it is easily removed from the step ladder.
    Type: Application
    Filed: April 4, 2008
    Publication date: August 7, 2008
    Inventor: Robert G. Spengler
  • Publication number: 20080093169
    Abstract: This is ladder that is more user friendly than the arts that are on the market today. This is accomplished by moving the legs of the ladders closer together than present day ladders, and by putting a warning bell on the second step from the bottom warning there is another step below before landing on a solid surface. Adjustable legs are a new feature in this new art of modern ladders. This eliminates time spent looking for a block or other object to put under the leg, thus saving time. Having the steps closer together makes it easier for the elderly and people with shorter legs to ascend and descend the ladder.
    Type: Application
    Filed: October 18, 2006
    Publication date: April 24, 2008
    Inventor: Allen H. Fletchall
  • Patent number: 7328772
    Abstract: Ladder support apparatus and methods are disclosed. In one embodiment, a method includes positioning a ladder having first and second pairs of legs in an operating position suitable for supporting a user. A ladder support assembly clampably coupled to the ladder, the ladder support assembly including at least one elongated member extending between a respective one of the first and second pairs of legs of the ladder, the elongated member being clampably coupled to the respective one of the first and second pairs of legs of the ladder by first and second coupling assemblies positioned at spaced-apart positions on the elongated member. The ladder is supported with the ladder support assembly on, for example, a non-uniform surface.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: February 12, 2008
    Assignee: The Boeing Company
    Inventors: Richard J Gardner, Karl J Schaefer
  • Patent number: 7293630
    Abstract: Stabilization devices for use with folding and/or extension ladders and methods of stabilizing ladders are disclosed herein. A stabilization device of one embodiment includes an upper shaft for operative coupling to a ladder's upper end. An outer leg has a lower end and an upper end with an aperture for receiving the shaft. An inner leg is configured for telescoping extension relative to the outer leg, and means are included for maintaining the inner leg at various positions. A foot is at the inner leg's lower end. A lower bracket selectively attaches to a ladder leg. A lower coupler selectively attaches to the outer leg. A lower strut has a first end attachable to the lower bracket and a second end attachable to the lower coupler to operatively couple the outer leg to the ladder leg and maintain a distance between the outer leg and the ladder leg.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: November 13, 2007
    Inventor: Frank Trebec
  • Patent number: 7255198
    Abstract: The present invention 10 discloses a stepladder having a ladder portion 18 that is comprised of rungs 24 and includes two ladder side rails, and a support portion that includes two angularly disposed telescoping legs 20 that provide mechanism for stabilizing the ladder. The telescoping support legs 20 are interconnected to each other and to the ladder side rails by lockable rigid spanner arms 22. When in use, the spanner arms 22 are locked in an open position to form a tripod formation between the rails while additionally limiting the angle of spread between the ladder portion 18 and the support legs 20. The present invention 10 also provides a retractable fly assembly 26 at the top of the ladder rails to provide for additional usable working height. A safety belt 36 is provided on the handle for additional support. A series of apertures with lock key fasteners 28 in each of the support legs provide mechanism for the user to securely position the legs at a desired length.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: August 14, 2007
    Inventor: Jennhwa Alan Lo
  • Patent number: 7216742
    Abstract: A step ladder stabilizer for mounting behind the front step portion and having two adjusting legs which adjust as a slide lock moves vertically within a slot attached to the rear of the ladder steps. When not in use, the ladder stabilizer closes flush against the back of the ladder steps. An alternate embodiment includes a ladder stabilizer for an extension ladder comprising an extending leg and a stabilizer arm with the top of the extending leg attaching to a slide lock that slides along a channel mounted on the side of the ladder. Bolts passing through expansion inserts hold the channel onto each side of the ladder.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: May 15, 2007
    Inventor: Robert G. Spengler
  • Patent number: 7163084
    Abstract: An adjustable ladder stabilizer assembly composed of sturdy, lightweight components that can be temporarily or permanently affixed to the side rails of a ladder and adjusted to a variety of positions to provide lateral support. This stabilizer assembly can also be folded up and easily secured in a storage position to fit within the profile of a ladder when not in use.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: January 16, 2007
    Inventor: Berle G. Blehm
  • Patent number: 7093690
    Abstract: The present invention provides a method and apparatus for stabilizing a ladder for minimizing accidents. For example, a main bracket may be connected to a lower arm, a foot bracket may be connected to the lower arm, an upper arm may be connected to the foot bracket and a slide arm may be telescopically slidable inserted inside the upper arm. Pins may be inserted into holes within the main bracket, upper arm, lower arm, and slide arm to secure the ladder stabilizer. The main bracket may be attached to most ladders regardless of side rail thickness. The ladder stabilizer may accommodate varying surfaces, flat and uneven, with the ability to fold up against the vertical sides of the ladder in a small compact unit when not in use.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: August 22, 2006
    Inventor: Jeffrey J. Swann
  • Patent number: 7017711
    Abstract: An extender and method for extending the leg of a ladder can both lengthen and stabilize the leg of the ladder. The extender includes a first channel shaped and dimensioned to receive the leg of the ladder. A second channel is shaped and dimensioned to receive the first channel. A first and second members pivotally connect the first channel to the second channel. The second channel may be selectively moved from a stowed position wherein the first channel is received by the second channel, to an extended position wherein the second channel outwardly projects from the first channel and resides in substantially co-linear relationship with the first member. A lock is selectively connectable between the first channel and the second channel to retain the second channel in the extended position. A retainer fixedly attaches the extender to a desired position along the leg of the ladder.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: March 28, 2006
    Inventor: Shaikh Mehboob Ali
  • Patent number: 6866119
    Abstract: A ladder includes a standing frame comprising two parallel standing side legs, a plurality of step platforms transversely extended between the standing side legs of the standing frame, and a side support enhancement including two side ground supports each having a ground end and a pivot end pivotally connected to the respective standing side leg, two reinforcing arms pivotally connected to the side ground supports respectively; and two sliding joints for slidably connecting the reinforcing arms with bottom ends of the standing side legs respectively. Therefore, the reinforcing arms are slid inwardly to pivotally pull the side ground supports to align with the standing side legs respectively to form a compact unit and are slid outwardly to pivotally push the side ground supports away from the standing side legs respectively so that the side ground supports are inclindedly and outwardly extended from the standing side legs respectively.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: March 15, 2005
    Inventor: Edward Zheng
  • Publication number: 20040231921
    Abstract: An outrigger stabilizer combined with a ladder includes a telescoped outer tube and inner elongated member with a one way brake freely allowing telescoping movement of the inner member out of the outer tube to automatically adjust to engage the ground but instantly locking together when any collapsing movement is attempted to brace the ladder in any adjusted position.
    Type: Application
    Filed: April 7, 2004
    Publication date: November 25, 2004
    Inventor: Paul V. Ramirez
  • Patent number: 6799660
    Abstract: A step ladder device for balancing and stabilizing a ladder upon most any surface. The step ladder device includes a ladder having pairs of side rails and rung members being attached to the pairs of side rails; and also includes a ladder support assembly having leg assemblies including leg support members being attached to bottom ends of the side rails, and also including leg members being adjustably attached to the leg support members, and further including feet members being pivotally attached to the leg members.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: October 5, 2004
    Inventor: James R. Crawford
  • Publication number: 20040154867
    Abstract: A ladder includes a standing frame comprising two parallel standing side legs, a plurality of step platforms transversely extended between the standing side legs of the standing frame, and a side support enhancement including two side ground supports each having a ground end and a pivot end pivotally connected to the respective standing side leg, two reinforcing arms pivotally connected to the side ground supports respectively; and two sliding joints for slidably connecting the reinforcing arms with bottom ends of the standing side legs respectively. Therefore, the reinforcing arms are slid inwardly to pivotally pull the side ground supports to align with the standing side legs respectively to form a compact unit and are slid outwardly to pivotally push the side ground supports away from the standing side legs respectively so that the side ground supports are inclindedly and outwardly extended from the standing side legs respectively.
    Type: Application
    Filed: February 11, 2003
    Publication date: August 12, 2004
    Inventor: Edward Zheng
  • Publication number: 20040134714
    Abstract: A step ladder stabilizer for mounting behind the front step portion and having two adjusting legs which adjust as a slide lock moves vertically within a slot attached to the rear of the ladder steps. When not in use, the ladder stabilizer closes flush against the back of the ladder steps. An alternate embodiment includes a ladder stabilizer for an extension ladder comprising an extending leg and a stabilizer arm with the top of the extending leg attaching to a slide lock that slides along a channel mounted on the side of the ladder. Bolts passing through expansion inserts hold the channel onto each side of the ladder.
    Type: Application
    Filed: January 15, 2003
    Publication date: July 15, 2004
    Inventor: Robert G. Spengler
  • Patent number: 6672427
    Abstract: A stabiliser for a ladder which enables the ladder to be safely used on sloping or uneven ground consists of spring loaded telescopic struts attached to the bottom of the ladder which are capable of compound rotary motion so that they can be opened to the required length and locked in position.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: January 6, 2004
    Assignee: Sandpiper Construction Limited
    Inventor: Lance Rodney Sheffield
  • Patent number: 6533071
    Abstract: A ladder with an incorporated pair of stabilizers. Each stabilizer comprises a base leg and an adjustable leg. Each adjustable leg is pivotally mounted on a side of the ladder, with the adjustable leg having a plurality of holes over its length. The base leg slides on a track within the adjustable leg and can be set to a specific length. An additional locking means is provided to temporarily lock the adjustable leg to the side of the ladder while in use.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: March 18, 2003
    Inventor: Winston Smith
  • Patent number: 6527084
    Abstract: A ladder stabilizer includes a substantially planar rigid frame having two legs depending in spaced apart relation with a fixed angular relationship to the frame. The frame has a first end and a second end, with remote ends of the two legs defining the second end. A pivot bar is provided which is secured to a selected rung of a ladder. Pivot bar retention brackets are secured to the frame in spaced relation adjacent to the first end. The ladder stabilizer described can be attached to a ladder without drilling bolt apertures.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: March 4, 2003
    Inventor: Viorel Hrincu
  • Publication number: 20020074187
    Abstract: Stabilizers for a step ladder and a step ladder with such stabilizers. The stabilizers consist of a pair of lateral supports. Each of the lateral supports has a first end and a second end. The first end is mounted to a top end of one of opposed side rails of the ladder. The mounting swivels to adjust the positioning of the lateral support about a plane perpendicular to a second plane lying across the side rails. The mounting also includes a pivot joint enabling movement between a stored positioned parallel to one of the side rails and an operative position in which the lateral support extends outwardly and downwardly with the second end of the lateral support spaced laterally from the side rails and swivelled into an intermediate position between the side rail and the support frame.
    Type: Application
    Filed: January 14, 2002
    Publication date: June 20, 2002
    Inventors: Fred Albert Bendle, Trevor Frederick Bendle
  • Publication number: 20020056591
    Abstract: A ladder stabilizer includes a substantially planar rigid frame having two legs depending in spaced apart relation with a fixed angular relationship to the frame. The frame has a first end and a second end, with remote ends of the two legs defining the second end. A pivot bar is provided which is secured to a selected rung of a ladder. Pivot bar retention brackets are secured to the frame in spaced relation adjacent to the first end. The ladder stabilizer described can be attached to a ladder without drilling bolt apertures.
    Type: Application
    Filed: October 16, 2001
    Publication date: May 16, 2002
    Inventor: Viorel Hrincu
  • Patent number: 6253876
    Abstract: A ladder stabilizer apparatus for preventing a ladder from slipping upon the ground while the user is moving upon the ladder.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: July 3, 2001
    Inventors: Gerard M. Cosgrave, Leonard Faught
  • Patent number: 6167989
    Abstract: A safety device for a ladder, as embodied by the invention, is applied to a ladder that comprises side rails and a plurality of rungs interconnecting the side rails. The safety device comprises a plurality of side safety supports that are stored in their stored position in one rung of the plurality of rungs. The side safety supports are extendible from the one rung to a stabilizing extended position in which the side safety stabilizers are in contact with a supporting surface. Thus, the ladder safety device provides lateral stabilizing support for the ladder.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: January 2, 2001
    Inventor: Koock Elan Jung
  • Patent number: 6152262
    Abstract: A ladder top safety device for a ladder, as embodied by the invention, is applied to a ladder that comprises side rails and a plurality of rungs interconnecting the side rails. The safety device comprises a plurality of side safety supports that are stored in their stored position in one rung of the plurality of rungs at an upper portion of a ladder. The side safety supports are extendible from the one rung to a stabilizing extended position in which the side safety stabilizers are in contact with a vertical supporting surface when a ladder is placed against a wall supporting surface, such as a wall. Thus, the ladder top stabilizer device provides lateral stabilizing support for the ladder.
    Type: Grant
    Filed: August 21, 1999
    Date of Patent: November 28, 2000
    Inventor: Koock E. Jung
  • Patent number: 6116379
    Abstract: A ladder stabilizing system having a solid brace (50 or 46) or the combination of side spreaders (24C), the ladder sections (10 and 12), and a diagonal cross brace (18) creating two rigid triangles, the function of which is to prevent the ladder sections from twisting or flexing and therefore make the step ladder or the side braces (70 & 74) of a ladder or step ladder much more stable and will prevent the ladder sections (10 and 22), or extended side braces from twisting or flexing, thereby making the ladder stronger and safer.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: September 12, 2000
    Assignee: Michael A. Huss
    Inventor: Michael A. Huss
  • Patent number: 6065566
    Abstract: Apparatus for stabilizing a two-legged ladder against lateral and rearward movement. Telescoped tubular pole assemblies are attached at one end to opposite side rails of the ladder with a quick disconnect universal pivot. Special support and retainer blocks are provided for facilitating the transport of the assembled ladder and telescoped assemblies on the top of a vehicle.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: May 23, 2000
    Inventors: Michael J. Brown, Richard T. Brown
  • Patent number: 5931259
    Abstract: A safety attachment for a ladder of the type which comprises a pair of spaced apart parallel side rails and a plurality of rungs extending between the side rails. The safety attachment includes a pair of tubular members, each of which is secured to a corresponding one of the side rails of the ladder. Two extension arms are also provided. One end of each of the extension arms has a friction pad secured thereto. The other end of each extension arm is pivotally attached to the top end of a corresponding one of the tubular members.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: August 3, 1999
    Inventor: Dale E. Hoey
  • Patent number: 5915498
    Abstract: A ladder with nesting lateral support braces includes a pair of nesting braces which internally receive the pair of side support rails of a ladder during storage of the ladder. Each of the nesting braces is attached to a side rail by a hinge for rotation into and out of a support position. A support arm is provided to prevent over-rotation of the nesting braces. Each of the nesting braces may additionally include an expansible leg for use of the ladder on uneven support surfaces.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: June 29, 1999
    Inventor: Joseph Figliuzzi
  • Patent number: 5868222
    Abstract: Ladder stabilizers for lateral attachment to an extension ladder for inhibiting sideways slipping and falling thereof accordingly to full safety. A long tube support made from non-rusting, a non-articulated bracing member, and a ladder side rail form an A-frame with the tube support and the side rail comprising the legs of the A and the bracing member comprising the horizontal connecting member of the A. The lock for the telescoping sections visibly indicates they are locked, this as per American National Standard ANSI A14.2-1990, par. 6.7.10, the installation being fully secured because of the technically safe locking device the telescopic tube is blocked with a spring pin. Ladder stabilizers are telescopic tubes for uneven ground and are pivotable along only the same surface of the ladder, thus enlarging the sustentation polygon for ladder support.
    Type: Grant
    Filed: June 10, 1996
    Date of Patent: February 9, 1999
    Inventor: Francois Charbonneau
  • Patent number: 5791437
    Abstract: A ladder with nesting braces device is disclosed which significantly improves the bilateral stability of the ladder minimizing risk of injury to an individual while simultaneously retaining a standard ladder design profile. The nesting braces internally receive the pair of side support rails during storage of the ladder. Each of the nesting braces includes a hinge engagement section having at least one locking mechanism. Each of the side support rails includes a hinge and a pair of gusset plates having a locking mechanism adapted for engagement to the hinge plates. The hinge and a corresponding hinge engagement section provides for the structural support and pivotal rotation of a nesting brace with respect to a side support rail. Each of the nesting braces may additionally include an expansible-leg having a releasable carriage/housing for vertical adjustment to securingly engage a surface during use of the ladder upon a non-level surface.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: August 11, 1998
    Inventor: Joseph Figliuzzi
  • Patent number: 5715908
    Abstract: A safety extension attached to the two ladder stiles and extending outwardly therefrom. Each extension is attached at two spaced locations along a ladder stile and terminates outwardly and downwardly in a V-shaped junction to which a stabilizing foot is attached.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: February 10, 1998
    Inventor: Scott E. Sager
  • Patent number: 5590739
    Abstract: A motorized utility extension ladder having a main and upper riser section extendable by a motor. The ladder further comprising a telescopic prop so that the ladder may be free standing, side wing legs for stabilizing the ladder, wheels for transporting the ladder, and a removable shelf.
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: January 7, 1997
    Inventors: DeWayne A. High, Timm J. Timmermann