With Spacer Patents (Class 182/197)
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Patent number: 10369402Abstract: An agility ladder exercise device has plural rungs which are connected by spaced flexible straps. Each rung has a left connector and a right connector, the left connector having structure thereon which engages with a right connector of a similar rung in a non-pivoting connection. The one or more ladders may be laid out on a play surface for use in agility exercises where the rungs of each ladder are spaced parallel to one another. Multiple ladders may be connected side to side, and can change lanes, or form a zig zag path. The ladders are stored with the rungs stacked parallel to one another within a holder with a U-shaped base. Each holder has connectors allowing a pair of holders to be releasably connected, and has a necked down region defined by restraint walls that engage with notches in the rungs.Type: GrantFiled: September 1, 2017Date of Patent: August 6, 2019Assignee: Prism FItness, Inc.Inventors: William J. Sotis, Weng Kin Chen
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Patent number: 9500026Abstract: A folding, self-erecting ladder for use in the marine environment comprises two rigid side rails with holes for holding rungs. Bungee cord is thread through the rungs and rails to tension the rails toward each other top hold the rungs in the rail holes. The ladder can be folded by pulling the rails apart, allowing the rungs to leave the rail holes, and moving the rails closer to each other, trapping the rungs therebetween, and binding the folded ladder to hold it in the folded position.Type: GrantFiled: June 11, 2014Date of Patent: November 22, 2016Inventor: Maurice J. Mountain
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Patent number: 8127892Abstract: The present invention relates to a method and apparatus for providing a flexible ladder for traversing a structure that addresses problems common with conventional rope ladders.Type: GrantFiled: May 21, 2007Date of Patent: March 6, 2012Inventor: Dan Heiduk
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Patent number: 8006803Abstract: The invention relates to a ladder comprising a single post (1) provided with a fixing means (4) on the upper end (1S) thereof, said ladder comprising an anchoring means (9, 10) which is especially adapted to said fixing means (4) and is attached to the wall (7), and foldable supporting arms (3) which are connected to either side of the single post (1) in an articulated manner.Type: GrantFiled: June 7, 2006Date of Patent: August 30, 2011Assignee: Airbus FranceInventor: Bernard Guering
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Patent number: 6902037Abstract: This invention is directed to a device for securing a step of a rope ladder to the rope. The device includes an upper and a lower wedge collar, each of which has a central slot through which the ropes to be secured are threaded. The device further includes a diamond-shaped wedge heart which is inserted in the slot between the ropes such that the ropes are compressed between the sides of the wedge collars and the edges of the wedge heart. The wedge heart also has locking lugs on each edge, each locking lug contacting a surface of the upper and the lower wedge collar to prevent the wedge heart from being pulled through the slot in the wedge collars when pressure is applied to the ropes.Type: GrantFiled: September 2, 2003Date of Patent: June 7, 2005Assignee: Coast Marine & Industrial Supply, Inc.Inventor: Robert M. Salvarezza
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Patent number: 6578664Abstract: A quick release latched security window guard having a framework attached to a building exterior overlying a window is held with a cam latch system including a cam rod extending through the building wall, with an end protruding into a hollow member forming a part of the framework. A sliding latching sleeve is spring urged into a slot in the cam rod end to lock the framework in place. Rotation of a handle on the rod end within the building forces the sleeve back to be cammed out of the slot to release the framework. One or more fixed slotted latching posts may also be mounted to protrude into the hollow member and to be engaged by portions of the sleeve to form additional latching points, all of which are released by the rotation of a single cam rod. The framework may take the form of one or more ladder sections deployed to hang down from the window when the framework is pushed out after being released by the operation of the cam rod.Type: GrantFiled: November 22, 2000Date of Patent: June 17, 2003Inventor: Stuart Doherty
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Patent number: 6460654Abstract: A collapsible ladder having rungs of a relatively strong and thin material with integral stand-off projections that allow the ladder to be safely descended and of a cross-section that allows the ladder rungs to nest to a high degree of compactness. The ladder is readily deployed by means of a cover having two sets of temporary fasteners. In an emergency, the ladder is deployed by partially unwrapping the cover to a first state which allows an attaching member to be removed and placed over a window sill. After insuring that narrow fabric supports, which attach the attaching member to the rungs, are not twisted between the attaching member and a top rung of the ladder, the multiple rungs (still wrapped by the cover and secured by a second set of temporary fasteners) are supported using a handle attached to the cover. The handle is then held outside the window and dropped.Type: GrantFiled: December 31, 2001Date of Patent: October 8, 2002Assignee: X-IT Products, LLCInventors: Aldo J. Dibelardino, Andrew D. Ive, Ezio C. Dibelardino
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Patent number: 6334510Abstract: A collapsible ladder having rungs of a relatively strong and thin material with integral stand-off projections that allow the ladder to be safely descended and of a cross-section that allows the ladder rungs to nest to a high degree of compactness. The ladder is readily deployed by means of a cover having two sets of temporary fasteners. In an emergency, the ladder is deployed by partially unwrapping the cover to a first state which allows an attaching member to be removed and placed over a window sill. After insuring that narrow fabric supports, which attach the attaching member to the rungs, are not twisted between the attaching member and a top rung of the ladder, the multiple rungs (still wrapped by the cover and secured by a second set of temporary fasteners) are supported using a handle attached to the cover. The handle is then held outside the window and dropped.Type: GrantFiled: June 8, 2001Date of Patent: January 1, 2002Assignee: X-It Products, LLCInventors: Aldo J. Dibelardino, Andrew D. Ive, Ezio C. Dibelardino
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Publication number: 20010027898Abstract: A collapsible ladder having rungs of a relatively strong and thin material with integral stand-off projections that allow the ladder to be safely descended and of a cross-section that allows the ladder rungs to nest to a high degree of compactness. The ladder is readily deployed by means of a cover having two sets of temporary fasteners. In an emergency, the ladder is deployed by partially unwrapping the cover to a first state which allows an attaching member to be removed and placed over a window sill. After insuring that narrow fabric supports, which attach the attaching member to the rungs, are not twisted between the attaching member and a top rung of the ladder, the multiple rungs (still wrapped by the cover and secured by a second set of temporary fasteners) are supported using a handle attached to the cover. The handle is then held outside the window and dropped.Type: ApplicationFiled: June 8, 2001Publication date: October 11, 2001Inventors: Aldo J. Dibelardino, Andrew D. Ive, Ezio C. Dibelardino
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Patent number: 6056086Abstract: The device comprises, inside a case, a tightening cam (7) hinged about an axis (8) such that, unused, it does not engage a belaying rope (2) passing through the case and, when the device is subjected to a set acceleration downwards, it pivots towards the rope (2) to tighten it to the case with self-tightening effect. On the cam (7) is mounted a detecting roller (10) which co-operates with the rope (2) when the cam (7) is unused. A spring actuated (13) friction piece (12), at a certain rotational speed of the roller (10), subjects it to a resisting moment which triggers off the pivoting of the cam (7) in the tightening direction. A lever (15), to which the user is linked, engages in a unidirectional manner the cam (7) to push it in tightening position if the user falls. The device simultaneously triggers off several tightening effects in case of a fall.Type: GrantFiled: March 16, 1998Date of Patent: May 2, 2000Assignee: Tractel, S.A.Inventors: Guido Gortan, Maksimiljan Cencic
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Patent number: 6006864Abstract: A tree ladder attachment for attachment to a tree to permit a user to climb up the tree. The tree ladder attachment includes a vertical bar with a horizontal bar coupled to a lower end of the vertical bar. The ends of an elongate flexible member are coupled to an upper end of the vertical bar. The flexible member forms a loop for wrapping around a tree trunk to hold the vertical bar to the tree trunk. A cross bar is connected to the horizontal bar by a pair of extension bars. A ladder comprising a spaced apart pair of elongate flexible rails and a plurality of spaced apart rungs is depended from the cross bar.Type: GrantFiled: November 12, 1998Date of Patent: December 28, 1999Inventor: Frank Walter Musk
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Patent number: 5971105Abstract: An escape ladder stored in an interior wall of a building, beneath a window. The ladder is deployed by placement through a window with a storage container providing a step for ease in exiting. Ladder steps are secured by a flexible strap with each step including an integral spacer to maintain proper positioning of the steps upon deployment. The ladder is stored in a nest configuration pattern with the connecting strap folded between each step.Type: GrantFiled: March 26, 1998Date of Patent: October 26, 1999Inventor: Harold Jacobson
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Patent number: 5024293Abstract: The present invention discloses an emergency ladder equipment. Such an emergency ladder equimpment is mounted on the outside wall of the top floor of buildings. The emergency ladder equipment substantially comprises a number of ladder members which are stored in a storage case in a stacked or folded manner except for an emergency case, wherein the storage case is mounted on the outside wall of buildings. Each ladder member is connected by a connecting device to the subsequent ladder member. Furthermore, the bottom end of each ladder member is supported by a support stay disposed in the storage case. By releasing the support stay, each ladder member slides down one after another in series while being connected by a plurality of connecting devices to form a complete ladder which is installed along the outside wall of the building.Type: GrantFiled: January 8, 1990Date of Patent: June 18, 1991Inventors: Anthony Yang, Victor Yang
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Patent number: 4869345Abstract: This invention relates to a collapsible ladder for carrying out work on the surface of convex buildings as radomes and other domes. The ladder--the radome ladder--consists of a number of straight sections which are hinged together by means of brackets which are articulated externally to a section end piece at the end of each ladder section. These end pieces can be changed to suit the diameter of the dome, and the length of each ladder section, in such a way that the ladder, when unfolded, forms, in essence, an arch parallel with the surface of the dome. In each section end piece there is a castor which rolls along the dome, permitting the radome ladder to be moved sideways with ease.Type: GrantFiled: July 8, 1988Date of Patent: September 26, 1989Inventor: Arild Nilsen