Lateral Prop Patents (Class 182/172)
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Patent number: 11980001Abstract: A collapsible and adjustable support for a computer cabinet is shown. The collapsible support includes a first endpiece, a second endpiece, an elongated guide member connected to and spanning between the first and second endpieces, an elongated toothed rack spanning between the first and second endpieces, a first and a second leg, and a disengagement device adapted for sliding the toothed rack from a first position to a second position relative to the guide member. The guide member includes a first guide recess, and guide pin(s). The toothed rack includes one or more second guide recesses, each adapted for receiving a first guide pin of the guide member, thereby allowing the toothed rack to slide from the first position to the second position relative to the guide member. Each leg includes a foot, a leg part connected to the foot, and a sled connected to the leg part.Type: GrantFiled: November 5, 2020Date of Patent: May 7, 2024Assignee: SINDRI APSInventors: Jonan Hjorslev Bahnsen, Allan Sejer Ertner
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Patent number: 11788352Abstract: A ladder and ladder accessory are provided including an accessory that may be coupled to the ladder in multiple configurations and serve multiple purposes. In one embodiment, a pair of components are each selectively coupled with associated rails of a ladder in a first, stored state, and a second, walkthrough state. When in the walkthrough state, the components extend upwards from and above the rails so that a user may gasp the components and step between the components when transitioning from the ladder to an elevated surface (e.g., a roof) or vice versa. In another embodiment, the components may be coupled to the ladder such that they extend in a direction that is substantially transverse to a plane through which the rails extend. When in this transverse orientation, the components may be used as a stand-off device.Type: GrantFiled: October 7, 2022Date of Patent: October 17, 2023Assignee: LITTLE GIANT LADDER SYSTEMS, LLCInventors: Wesley V. Clark, N. Ryan Moss
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Patent number: 10378278Abstract: 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: GrantFiled: January 27, 2017Date of Patent: August 13, 2019Assignee: Sentron Engineering (S) Pte LtdInventor: Heng Hung Tang
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Patent number: 9879481Abstract: 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: GrantFiled: April 23, 2010Date of Patent: January 30, 2018Inventor: Michael Patrick Fitzgerald
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Patent number: 9347263Abstract: 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: GrantFiled: July 2, 2013Date of Patent: May 24, 2016Assignee: TELETOWER.COM LIMITEDInventor: Richard Weston
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Patent number: 8973710Abstract: 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: GrantFiled: January 3, 2013Date of Patent: March 10, 2015Assignee: Wing Enterprises, IncorporatedInventors: N. Ryan Moss, Gary M. Jonas, Chad Grotegut, Sean R. Peterson, Brian B. Russell, Stephen E. Boynton, Ryan Crawford, Darius S. Penrod
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Patent number: 8701828Abstract: 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: GrantFiled: August 5, 2010Date of Patent: April 22, 2014Inventor: Martin S Matthew
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Patent number: 8607932Abstract: 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: GrantFiled: May 31, 2007Date of Patent: December 17, 2013Inventors: William Albert Cooper, Rosemary Jennings Cooper
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Patent number: 8602162Abstract: 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: GrantFiled: April 18, 2011Date of Patent: December 10, 2013Assignee: King Fahd University of Petroleum and MineralsInventors: Mehmet Dondurur, Ahmet Z. Sahin
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Patent number: 8485316Abstract: 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: GrantFiled: April 3, 2009Date of Patent: July 16, 2013Assignee: Lock N Climb, LLCInventors: Floyd LaVern Vestal, Jeffrey A. Green
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Patent number: 8424642Abstract: 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: GrantFiled: July 27, 2010Date of Patent: April 23, 2013Inventor: James D. Lietz
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Patent number: 8365865Abstract: 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: GrantFiled: February 26, 2010Date of Patent: February 5, 2013Assignee: 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
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Publication number: 20120168253Abstract: 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: ApplicationFiled: November 3, 2011Publication date: July 5, 2012Inventor: Daniel McMurray
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Publication number: 20120103727Abstract: 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: ApplicationFiled: December 8, 2011Publication date: May 3, 2012Inventor: Paul V. Ramirez
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Publication number: 20110067954Abstract: 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: ApplicationFiled: March 12, 2010Publication date: March 24, 2011Inventor: Clifton Deal
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Publication number: 20110017549Abstract: 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: ApplicationFiled: July 27, 2010Publication date: January 27, 2011Inventor: James D. Lietz
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Publication number: 20110011678Abstract: 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: ApplicationFiled: March 26, 2009Publication date: January 20, 2011Inventor: Lance Rodney Sheffield
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Publication number: 20100300805Abstract: 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: ApplicationFiled: February 26, 2010Publication date: December 2, 2010Applicant: WING ENTERPRISES, INCORPORATEDInventors: N. Ryan Moss, Gary M. Jonas, Chad Grotegut, Sean R. Peterson, Brian B. Russell, Stephen E. Boynton, Ryan Crawford, Darius S. Penrod
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Patent number: 7757814Abstract: 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: GrantFiled: April 24, 2007Date of Patent: July 20, 2010Assignee: Ladder Stabilizerz Inc.Inventors: Stephen Pleadwell, Martin Claussen
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Patent number: 7753334Abstract: 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: GrantFiled: September 10, 2008Date of Patent: July 13, 2010Inventor: James L. Schreiber
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Publication number: 20090107765Abstract: 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: ApplicationFiled: October 30, 2007Publication date: April 30, 2009Inventor: Clyde Germond
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Publication number: 20090045013Abstract: 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: ApplicationFiled: August 7, 2008Publication date: February 19, 2009Inventor: Daniel McMurray
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Publication number: 20080185225Abstract: 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: ApplicationFiled: April 4, 2008Publication date: August 7, 2008Inventor: Robert G. Spengler
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Publication number: 20080093169Abstract: 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: ApplicationFiled: October 18, 2006Publication date: April 24, 2008Inventor: Allen H. Fletchall
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Patent number: 7328772Abstract: 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: GrantFiled: May 22, 2006Date of Patent: February 12, 2008Assignee: The Boeing CompanyInventors: Richard J Gardner, Karl J Schaefer
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Patent number: 7293630Abstract: 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: GrantFiled: May 10, 2006Date of Patent: November 13, 2007Inventor: Frank Trebec
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Patent number: 7255198Abstract: 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: GrantFiled: October 25, 2004Date of Patent: August 14, 2007Inventor: Jennhwa Alan Lo
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Patent number: 7216742Abstract: 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: GrantFiled: January 15, 2003Date of Patent: May 15, 2007Inventor: Robert G. Spengler
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Patent number: 7163084Abstract: 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: GrantFiled: June 7, 2005Date of Patent: January 16, 2007Inventor: Berle G. Blehm
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Patent number: 7093690Abstract: 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: GrantFiled: August 27, 2004Date of Patent: August 22, 2006Inventor: Jeffrey J. Swann
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Patent number: 7017711Abstract: 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: GrantFiled: November 4, 2003Date of Patent: March 28, 2006Inventor: Shaikh Mehboob Ali
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Patent number: 6866119Abstract: 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: GrantFiled: February 11, 2003Date of Patent: March 15, 2005Inventor: Edward Zheng
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Publication number: 20040231921Abstract: 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: ApplicationFiled: April 7, 2004Publication date: November 25, 2004Inventor: Paul V. Ramirez
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Patent number: 6799660Abstract: 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: GrantFiled: December 26, 2002Date of Patent: October 5, 2004Inventor: James R. Crawford
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Publication number: 20040154867Abstract: 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: ApplicationFiled: February 11, 2003Publication date: August 12, 2004Inventor: Edward Zheng
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Publication number: 20040134714Abstract: 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: ApplicationFiled: January 15, 2003Publication date: July 15, 2004Inventor: Robert G. Spengler
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Patent number: 6672427Abstract: 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: GrantFiled: September 26, 2001Date of Patent: January 6, 2004Assignee: Sandpiper Construction LimitedInventor: Lance Rodney Sheffield
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Patent number: 6533071Abstract: 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: GrantFiled: December 28, 2001Date of Patent: March 18, 2003Inventor: Winston Smith
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Patent number: 6527084Abstract: 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: GrantFiled: October 16, 2001Date of Patent: March 4, 2003Inventor: Viorel Hrincu
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Publication number: 20020074187Abstract: 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: ApplicationFiled: January 14, 2002Publication date: June 20, 2002Inventors: Fred Albert Bendle, Trevor Frederick Bendle
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Publication number: 20020056591Abstract: 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: ApplicationFiled: October 16, 2001Publication date: May 16, 2002Inventor: Viorel Hrincu
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Patent number: 6253876Abstract: A ladder stabilizer apparatus for preventing a ladder from slipping upon the ground while the user is moving upon the ladder.Type: GrantFiled: March 10, 2000Date of Patent: July 3, 2001Inventors: Gerard M. Cosgrave, Leonard Faught
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Patent number: 6167989Abstract: 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: GrantFiled: July 16, 1999Date of Patent: January 2, 2001Inventor: Koock Elan Jung
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Patent number: 6152262Abstract: 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: GrantFiled: August 21, 1999Date of Patent: November 28, 2000Inventor: Koock E. Jung
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Patent number: 6116379Abstract: 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: GrantFiled: November 12, 1997Date of Patent: September 12, 2000Assignee: Michael A. HussInventor: Michael A. Huss
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Patent number: 6065566Abstract: 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: GrantFiled: December 17, 1998Date of Patent: May 23, 2000Inventors: Michael J. Brown, Richard T. Brown
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Patent number: 5931259Abstract: 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: GrantFiled: December 17, 1996Date of Patent: August 3, 1999Inventor: Dale E. Hoey
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Patent number: 5915498Abstract: 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: GrantFiled: August 5, 1998Date of Patent: June 29, 1999Inventor: Joseph Figliuzzi
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Patent number: 5868222Abstract: 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: GrantFiled: June 10, 1996Date of Patent: February 9, 1999Inventor: Francois Charbonneau
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Patent number: 5791437Abstract: 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: GrantFiled: October 13, 1994Date of Patent: August 11, 1998Inventor: Joseph Figliuzzi