Safety Device For Ground-supported Ladder Patents (Class 182/107)
  • Patent number: 5358071
    Abstract: A ladder support attachment for supporting a ladder relative to a building while avoiding damage to the gutters or eaves trough includes opposed support leges releasably attachable to a transversely extending support rod which is, in turn, receivable within the hollow rung of the ladder. The support legs each have return legs associated therewith and configured to fit within the gutter and bear against the rear wall thereof to enable the ends of the support legs to rest on the roof of the building with the return legs within the gutter and the ladder itself firmly supported but out of contact with the gutter.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: October 25, 1994
    Inventor: Arthur R. Stennett
  • Patent number: 5341899
    Abstract: An anti-skid and leveling device for ladders is provided, containing a pair of devices, each consisting of a guide rail along which an upper carriage and a lower carriage slide independently. The upper carriage provides a mounting platform onto which a brace is rotatably mounted. When pivoted to a specified angle, and lowered so as to contact the ground, the brace will prevent the ladder from skidding in a direction away from the object on which the ladder is resting. A self locking mechanism employing a series of detents is used to secure the upper carriage in a stationary position. The lower carriage provides a mounting platform onto which an outrigger type foot is mounted. The design of the foot provides the ladder with greater lateral stability. The sliding motion of the lower carriage provides height adjustment for the foot, allowing the ladder to be leveled on uneven terrain.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: August 30, 1994
    Inventor: Michael J. Casamento
  • Patent number: 5337856
    Abstract: An improved device for safely and effectively securing and stabilizing a ladder placed against a structure and resting upon the ground. The device includes a U-shaped member forming an anchoring pin, an impact area for receiving a driving force, and a handle for easy disengagement of the anchoring pin, for simultaneously engaging both the lowest rung of the ladder and the ground to prevent the ladder from inadvertently displacing across the ground away from the structure. For optimum safety, at least one anchoring pin placed across the center of the lowest ladder rung, or a pair of anchoring pins placed on opposite sides of the lowest rung will secure the ladder against lateral displacement and side-to-side tipping forces.
    Type: Grant
    Filed: July 14, 1993
    Date of Patent: August 16, 1994
    Inventor: James J. Fillers
  • Patent number: 5323875
    Abstract: A stand off brace of preferably one-piece tubular construction for use with ladders in which the brace includes a central generally V-shaped apex which is adapted to extend into and between the ladder rails such that increased rigidity between the brace and ladder is brought about.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: June 28, 1994
    Inventor: Douglas A. Kennett
  • Patent number: 5297652
    Abstract: A mobile apparatus featuring framing for dual scaffolding and numerous other features that is equipped for highway towing to the job site, where it may be erected and towed with supporting equipment and supply trailers in a train-like fashion, with scaffolds erect on both sides of fences, levees or walls, to enable efficient cleaning, coating, maintenance or construction work to be performed simultaneously to all surfaces in a continuous efficient manner without the need to break down and re-erect equipment and scaffolds between progressive work areas.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: March 29, 1994
    Inventors: Alex Armond, Carolyn Armond
  • Patent number: 5293958
    Abstract: A ladder wall stand-off accessory for mounting on a ladder rung between the spaced side rails of a ladder section including arm stand-off means with wall surface pad means extending therefrom and having rung gripping means pivotally mounted thereon to engage with the ladder rung to be fastened thereto in clamping relation therewith, a novel rung adapter bar being provided to mask the ladder rung if required.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: March 15, 1994
    Assignee: Emerson Electric Co.
    Inventors: Paul R. Swiderski, Thomas J. Schmitt, David L. Pringle
  • Patent number: 5267631
    Abstract: An apparatus to include a stairwell stabilizer having a tripod leg structure to effect stability relative to a central support tube, having an extension tube directed therefrom. The extension tube includes a support rod orthogonally mounted medially of itself to an upper distal end of the extension tube, with the support rod having extension legs directed exteriorly of each end of the support rod. Each extension leg includes an abutment flange having an abrasive exterior surface to support scaffold planks thereon. A further scaffold stabilizer structure includes laterally extending mounting bars pivotally mounted to upper distal ends of a scaffold structure at opposed sides thereof, wherein each mounting bar includes a slide tube, with each slide tube having stabilizer rods directed therefrom, wherein the stabilizer rods are secured to opposed sides of a scaffold structure for stability.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: December 7, 1993
    Inventor: Gary S. Mendel
  • Patent number: 5263551
    Abstract: The present invention discloses a device for use in carpentry, painting, and other construction. The device has two side members shaped generally as quadrilaterals with the first side member being a mirror image of the second side member. A first surface joins a first edge of the first side member to a fifth edge of the second side member. A second surface joins a second edge of the first side member to a sixth edge of the second side member. The fourth edge of the first side member and the eighth edge of the second side member have teeth which engage a surface. The fourth edge and the eighth edge also have cut outs which assist in engaging a ladder. A handle can be provided for easy carrying. A third surface joins the first side member to the second side member.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: November 23, 1993
    Inventor: Terry M. Andersen
  • Patent number: 5255758
    Abstract: A protective assembly for a ladder system is provided for scaffolding structures of the type which utilizes a connector/retention system for detachably securing upright and horizontal members. The protective assembly is comprised of substantially U-shaped and substantially J-shaped horizontal members the ends of which have secured thereto connector means and which when secured to upright members to both sides of said ladder system provides an efficient enclosed circular cage with unobstructed access from a lower ladder to a platform at the base of an upper ladder.
    Type: Grant
    Filed: February 25, 1991
    Date of Patent: October 26, 1993
    Assignee: Cherokee Construction Co.
    Inventor: Roy Hood, Jr.
  • Patent number: 5226504
    Abstract: A ladder stabilizer is disclosed which is an add-on to an existing step-ladder which requires no alteration or modifications of the step-ladder. The apparatus consists of a V-shaped member supporting L-shaped telescopic legs, the V-shaped member being attached to two parallel cross members which join the front and back legs of the ladder together and when the ladder is rocked in a lateral motion the L-shaped legs fall inward until they are in stable contact with the ground surface, thus being self-adjusting.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: July 13, 1993
    Inventor: Ed J. Bumbera
  • Patent number: 5181584
    Abstract: The ladder leveling adapter comprises a pair of spacers adapted to be secured outwardly on the side rails of the ladder between two interconnecting rounds. An elongated bar having a median slot parallel to the rail extends over the spacers and projects below the rails. Each rail and each adjacent elongated bar are connected together by a pair of threaded rods having a nut threadedly mounted on the inner side of the rail and quick release tightening means on the outer side of the bar. A friction means is mounted around each rod between the spacer and the bar for preventing a longitudinal slipping between the bar and the rail. The quick release tightening means comprises a knob axially mounted on the rod having a flat surface abuting on the bar and a lever for slidingly moving the knob against the bar. The knob includes a pin which extends in the slot of the bar for preventing the rotation of the lever relative to the slot, the pin having a length greater than the releasing distance of the release means.
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: January 26, 1993
    Inventor: Yves M. Simard
  • Patent number: 5180031
    Abstract: A gardener's aid for sloped ground formed of first and second elongated paralleled spaced apart strut members, a plurality of generally flat spaced apart paralleled support members each having one end affixed to a first strut member and the other end affixed to the other strut member, the support members being in planes parallel to each other and at an acute angle to the longitudinal axis of the strut members, and first and second arm members affixed at one end of the first and second strut members, the arm members extending in a plane substantially perpendicular to the plane of the strut members longitudinal axii, the gardener's aid being positionable on sloped ground so that the support members are generally horizontal providing surfaces for receiving the feet, knees or hands of users, the arm members serving to contact the sloped ground and support the strut members and support members above and generally parallel to sloped ground.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: January 19, 1993
    Inventor: Daniel S. Smith
  • Patent number: 5180032
    Abstract: An apparatus for securing and stabilizing a ladder and extension ladder structure relative to a dwelling is provided, wherein the apparatus initially includes a plurality of arcuate arms mounted adjustably relative to tracks, wherein each track is secured to opposed ladder legs of an associated ladder structure. The arms each include anchor blocks, and the arms forward distal ends are mounted within cavities of each respective anchor block for positioning each anchor block upon a roof top surface. A further aspect of the invention includes organization for positioning and mounting the anchor structure relative to a bottom surface of a roof or to a vertical wall surface to include legs mounted adjustably relative to each ladder leg, wherein each of the legs are formed in an extensible configuration to include anchor structure mounted to each forward distal end of each of the legs.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: January 19, 1993
    Inventor: Martiniano A. Hidalgo
  • Patent number: 5165501
    Abstract: A multiple use ladder support attachment (M.U.L.S.A.), for hollow rung ladders, designed to pivot and lock a pair of arms (with a support plate across one end) so as to offset and support a ladder top from a roof of any slope (pitch) or to pivot the support plate upward and support the ladder top a selectable distance from a vertical wall or to further pivot upward and place the support plate between the ladders rail tops and any fragile siding to protect the siding from damage.A pair of adjustable length pivotal upper arms connected to a pair of adjustable length pivotal lower arms. The upper arms control the distance from ladder to support plate while the lower arms control the angle of the upper arms (and support plate). The pivotal action allows a simple change from one support position to another.A second configuration uses an optional support plate to support the ladder top from the peak of a roof.In a third configuration, the M.U.L.S.A.
    Type: Grant
    Filed: July 25, 1991
    Date of Patent: November 24, 1992
    Inventor: Howard E. Donahey
  • Patent number: 5123503
    Abstract: A roller device (7) for equipment such as a ladder (5) has a rigid core (14) with an axle (17), and a surrounding more compressible rubber portion (8,9) circumferentially spaced portions of which are more readily compressible than adjacent portions so that the device will roll easily when not under load, but less easily when under load.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: June 23, 1992
    Inventor: James B. Clarke
  • Patent number: 5121813
    Abstract: A stabilizing leg for attachment to a ladder for use on uneven surfaces comprises a rigid leg member (3) having a central longitudinal slot (6) through which extend U-bolts (17) for clamping the leg member (3) to the rungs (15) of the ladder. The U-bolts can be slackened to permit the leg member (3) to slide vertically relative to the rungs between stored and extended positions, and also to slide along the rungs between the opposed stiles. The leg can be used on a ladder without specific adaptation of the ladder. There is also disclosed a hooking support (30) for attachment to the stiles at the upper end of the ladder for supporting the ladder from a ledge or spouting. The support comprises a number of adjacent hooking portions (34a) to (34d) spaced by a fraction of the ladder rung spacing.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: June 16, 1992
    Assignee: Altrone Innovations PTY. LTD.
    Inventor: Robert L. Funston
  • Patent number: 5117941
    Abstract: A pair of brackets for the top end of a ladder, which can be slipped over the ladder rails and pinned in attached relation thereto, are of light weight, low cost pressed steel construction, and are formed to accept as a spacer member a piece of two-by-four timber, to permit supporting the ladder against the face of a building such as a damage-susceptible siding, or in positioned relation in a window opening, wherein the two-by-four timber spans the window opening and supports the ladder in that opening. An alternative use of the brackets, in one embodiment in combination with a small plywood platform attached to the brackets, serves as a ladder hold-off, for use when working under or adjacent the eaves of a house, and to serve as a supporting platform for a can of paint, or other adjuncts such as tools. The form of the brackets facilitates readily manufacture from sheet steel, with high percentage material utilization, and low scrap generation.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: June 2, 1992
    Inventor: Eugene Gruber
  • Patent number: 5113973
    Abstract: A stand-off brace for attachment to the top end of a ladder maintains the top end of the ladder away from the work surface against which it would ordinarily rest. The brace has a general U-shape wherein the legs are adjustable to vary the distance between the ladder and the work surface. The distance between the legs is also adjustable so that the brace spans the work surface.
    Type: Grant
    Filed: April 6, 1990
    Date of Patent: May 19, 1992
    Inventor: Don L. Southern
  • Patent number: 5086876
    Abstract: A Foot actuated ladder brace for stabilizing ladders with side rails operates by increasing the ladder base width. A channel shaped foot link is pivotally connected to the bottom of one of the ladder side rails as to fold up along the side rail and to swing downwardly to extend along and increase the ladder base. A smaller channel shaped intermediate link adapted to nest within the foot link has a foot end pivotally connected to the outer end of the foot link. The intermediate link has an inward end which is pivotally connected to the outer end of the smallest channel shaped ladder link which is adapted to nest within the intermediate link. The ladder link has a ladder end pivotally connected to the side rail above the bottom of the rail.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: February 11, 1992
    Inventor: Gary E. Severson
  • Patent number: 5078231
    Abstract: A base plate includes a plurality of plate members, each formed with abutting flanges that are in turn orthogonally oriented relative to one another to provide a continuous abutment surface for a plurality of ladder legs of an associated ladder. The structure includes pins directed through each corner of the free ends of the base plates, and may further be provided with tether lines, with a plurality of the tether lines utilizing adjusting means for fixedly anchoring the ladder to the plate structure. Further refinement of the organization includes the flanges in hingedly intercommunicating relationship relative to one another to permit interfolding of the structure for ease of transport and storage.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: January 7, 1992
    Inventor: Allen N. Davis
  • Patent number: 5067588
    Abstract: A system for holding a ladder in a secure position relative to an object against which the ladder rests. The system comprises a strap that contacts the ladder and the object and secures the ladder to the object. The system is also comprised of a first buckle and a second buckle, with each buckle being able to be placed at a desired position on the strap. Each end of the strap passes through a respective buckle and is positioned about a side rail of the ladder. The present invention also pertains to a buckle for holding a strap. The buckle comprises a first member having a first hole. Additionally, the buckle is comprised of a second member having a second hole. There is also a third member having a third hole. The third member is in sliding relationship with the first and second members such that the first side of the third member can slide over the first hole and contact the strap extending therethrough.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: November 26, 1991
    Assignee: R. D. Werner Co., Inc.
    Inventor: Roy B. Bendickson
  • Patent number: 5054579
    Abstract: A ladder having an anchoring system is disclosed including a ladder and stakes to be driven into the ground which are engagable against an upwardly facing surface of the ladder in the normal position of use. According to preferred embodiments, the ladder is provided with a pair of apertures either in the lower most rung, the side rails or in laterally extending flanges through which the anchoring stakes are received.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: October 8, 1991
    Inventor: John A. Moson
  • Patent number: 5016732
    Abstract: A portable combination observation and hunting stand having a lower and middle ladder portion interconnected with each other with the middle ladder portion interconnected to a third, upper portion which comprises of a seat platform and an separate standing platform, all of which is abuttable to a tree or other support structure at a unique angle and is securely attached thereto by a chain or cable having a first end attached to the upper ladder portion at the end of the outer vertical upright then extending around the tree to a turnbuckle or load binder pivotally connected on the opposite side of the seat platform and adjustable according to the circumference of the selected tree or other support structure.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: May 21, 1991
    Inventor: Stewart A. Dunn
  • Patent number: 5012895
    Abstract: For enhancing the safety of a ladder, adjustable extensions (14) can be attached to the bottom ends of the side rails of the ladder so as effectively to adjust the lengths of such rails so that the ladder will not lean to either side, regardless of any difference in heights of the ground or support areas under such rails. Also coupling cables (66) couple the ladder to the wall of the building against which the ladder leans. The coupling cables connect the midpart of the ladder to a horizontal wall cable (64) which is attached along and parallel to the wall of the building. The top of the ladder is stabilized against rolling to either the left or right and so that it can be positioned stably against irregular supports, such as windows, eaves, pitched roofs, pipes, etc., by means of stabilizing bars (74) connected to its top and suitably shaped to mate with the irregular supports, and by extension arms (82) which project out from the top of the ladder. Hand holds (88) are attached to the extension arms.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: May 7, 1991
    Assignee: Joseph H. Couch, IIII
    Inventor: Virgil Santos
  • Patent number: 5010979
    Abstract: An improved ladder stabilizing device for supporting a ladder a spaced distance away from a substantially vertical surface is disclosed. The device of the present invention includes a U-shaped support bar which forms two parallel legs, the ends of which rest against the substantially vertical surface. The support bar is attached to a leveling device consisting essentially of a U-shaped channel. The ends of the leveling device rest against the side rails of the ladder and the support bar engages the U-shaped channel. The leveling device and the support bar are simultaneously attached to the side rails of the ladder. The stabilizing device is easily removable and holds the ladder a distance from the substantially vertical surface to provide a safe angle of support.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: April 30, 1991
    Inventor: Arthur L. Shreve, III
  • Patent number: 4998982
    Abstract: A metal construction for a ladder includes two spaced apart side rails and a plurality of rungs attached at their ends to the side rails. The side rails each include a generally rectangular side rail tube having angularly disposed reinforcing webs integrally formed within the tube. A plurality of weight reducing apertures are formed in the sidewalls of the tube and are longitudinally spaced at predetermined intervals. The rungs include a tube with an integral reinforcing web extending parallel to the sidewalls of the tube. A portion of the sidewalls of the ladder rung tube are removed by milled slots. The rungs are pivotally attached to the side rails to allow the ladder to be collapsed down to a folded condition.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: March 12, 1991
    Inventors: William F. Arnold, Bill M. Arnold
  • Patent number: 4995476
    Abstract: A safety attachment for a ladder is disclosed as including an extruded channel fixed to the top of the ladder with a screw shaft having left and right hand threads disposed in the channel, pole engaging arms extend from guides mounted on the shaft threads for movement of the arm to engage and disengage relative to the pole. A pulley fixed to the shaft rotates the same by means of a rope having ends extending toward the bottom of the ladder whereby the pulley may be operated either at the top or the bottom of the ladder.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: February 26, 1991
    Inventor: Robert J. Buck
  • Patent number: 4974699
    Abstract: A safety device for stabilizing the upper end of a ladder against the exterior wall of a building or other resting surface comprising a tubular body of a length greater than the typical ladder width and having coaxial and coextensive inner and outer contiguous tubular sections. The inner tubular section is a normally rigid temporarily deformable member and the other tubular section is a resilient slip-resistant sheath. The tubular body is provided with spaced-apart longitudinally aligned openings permitting insertion-registration of ends of the ladder stiles, and straps are provided for removably securing the device to the ladder.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: December 4, 1990
    Inventor: Clair W. Boring
  • Patent number: 4971167
    Abstract: An apparatus is set forth wherein a plurality of spaced tubular supports include pivotally mounted angular feet at their lower terminal ends. The supports each telescopingly receive an inner support, wherein each inner support includes a "C" shaped rigid jaw for positioning about a rung of an associated ladder to provide support to the ladder. The parallel supports include spaced sleeves, wherein the sleeves include tab members, wherein each respective tab member pivotally mounts an elongate link. Each link is defined by an enclosed slot, wherein the slots overlap and include connector clamps to space the links and the supports relative to one another to provide an organization securely positioning and maintaining a ladder in a predetermined orientation.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: November 20, 1990
    Inventor: Keith E. Winnard
  • Patent number: 4964488
    Abstract: A ladder stabilizer comprising rigid wings attached to the rails, extending to the ground on each side to brace the ladder. The wings are attached by hinges to fold against the ladder front for storage. The design takes advantage of the angular relationship between the rails of a ladder and the ground, to automatically adjust to the optimum angle and position of support, making deployment trivial. The design distributes stress along each ladder rail, allowing installation on portable ladders of all constructions load ratings.Embodiments and enhancements are described which provide flexibility of use in obstructed situations, and enable user adaptability for all shapes and sizes of portable ladders.
    Type: Grant
    Filed: January 13, 1989
    Date of Patent: October 23, 1990
    Inventor: John V. Stewart
  • Patent number: 4949810
    Abstract: A pair of attachments for use with ladders constructed with hollow rungs to stabilize the ladder and to protect the gutter. These attachments when used with ladders also provide for a scaffold plank. The attachments when used with a ladder on a pitched roof allows the ladder to be used to access that roofs peak. Previously the ladder would rest on the rain gutter when the user was to access the roof of a building. Previously a work platform had to be built from wood or metal resulting in time consuming construction. Previously when accessing the roof peak of a building a means of providing a positive foothold had to be constructed from rope and ladder or from wood. The present invention provides steel flat bars bent to fit the rung spacing of the ladder with a steel tube welded at each end sized to fit snuggly into the opening of any two consecutive rungs in that ladder. The ladder can now be used to access the roof of a building without resting on the gutter.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: August 21, 1990
    Inventor: Wayne F. Dwinnell
  • Patent number: 4946004
    Abstract: This invention relates to a pole gripping assembly for use in stabilizing ladders used to ascend a tree, utility pole or the like. The assembly comprises a yoke member having an arcuate shape which is connected between the side rails at an upper end of a ladder. The yoke member is connected by brackets to the side rails for pivotal movement about a transverse axis so as to pivot at least between a plane common with the lader and a plane perpendicular to the ladder. The assembly further includes a pair of arcuate gripping arms which are pivotally connected to the yoke member adjacent opposite ends thereof. The gripping arms are biased to an open position to receive a pole and pivot to a closed position when a pole moves into a pole receiving space generally between the opposite ends of the yoke member. In accordance with the invention the gripping arms hold the pole in the pole receiving space until the ladder is withdrawn from the pole.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: August 7, 1990
    Inventor: Kenneth H. Henson
  • Patent number: 4941547
    Abstract: A wall scaffold using a pair of ladders equipped with ladder jacks for supporting a horizontal work platform. The invention includes numerous safety features such as a safety railing on standards attached to the outboard ends of the ladder jacks, a paint bucket trolley for the railing, an adjustable anti-flexing brace between the central part of the ladder and the wall to prevent bouncing of the ladder and platform, a unique safety clamp for tightly securing components to the ladder rungs, a ladder level adjuster, an auxiliary step to assist in mounting and dismounting the work platform, and a safety stake attachable to the lowest ladder rung to prevent bottom "slip-out".
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: July 17, 1990
    Inventor: Lester R. Livick
  • Patent number: 4932498
    Abstract: The present invention relates to an improved device designed to be mountable on a building for supporting a ladder and protecting the building from damage due to the ladder. The improved device includes a plurality of leg means, attachment means, and crosspiece means that are mountable to a building and act to support a ladder, prevent lateral movement thereof, and protect the building or portions thereof such as gutters or roofs, from damage due to the ladder.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: June 12, 1990
    Inventor: James W. Miller
  • Patent number: 4926968
    Abstract: A sway brace is attached to each of the opposite sides of a step ladder. The attachment is made by a bolt passing through aligned holes in the brace leg and an associated ladder leg. The bolt hole in the brace leg is oversized to permit it to swing to a bracing position. A compression spring takes up the resulting looseness.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: May 22, 1990
    Inventor: Leroy F. Schumer
  • Patent number: 4924971
    Abstract: A ladder safety apparatus for use with a straight ladder having vertical side rails, and having horizontally aligned openings in the side rails, is disclosed. An example is a hollow-rung metal or aluminum ladder. The safety apparatus includes a flexible metal cable of a length somewhat greater than the rail-to-rail dimension of the ladder, the cable extending through the openings in the side rails. An elongated metal bolt or tube is non-removably attached to each end of the metal cable, to thereby form a linear extension of the metal cable. First and second building attachment means are provided, each such means having a metallic cable-attachment portion with an opening therein whereby the building attachment means is slidably and loosely mounted on the bolt or tube. An adjustment nut or collet is mounted on the bolt or tube, and in a position to adjustably trap the cable-attachment portion on an end of the metal cable. The metal cable includes a protective plastic covering.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: May 15, 1990
    Inventor: Billy M. Rice
  • Patent number: 4923049
    Abstract: The invention is directed to a portable wing extension for releasably securing to a roof ladder. The wing extension includes a horizontal wing section secured to slide through supports which are received within adjacent rungs of the ladder. A pair of lock pins releasably secure the wing extensions to the ladder. Wing extensions can be attached to either or both sides of the ladder. The attached wing extensions permit a firefighter to safely cut a ventilation hole in a roof beyond the width of the ladder at any location on the roof.
    Type: Grant
    Filed: March 29, 1989
    Date of Patent: May 8, 1990
    Inventors: Edward C. Kent, Charles E. Long
  • Patent number: 4919229
    Abstract: A load support platform for use in conjunction with a vehicle tire wherein a pair of outwardly flared feet 22, 24 interact with the tire such that lateral or downward forces on the platform 6 is resisted by the weight of the vehicle.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: April 24, 1990
    Inventor: David E. Wells
  • Patent number: 4907675
    Abstract: This modular constructional element (14), which is of the type comprising at least two uprights between which at least one crosspiece extends, is such that each end of the uprights is screw-threaded and adapted to cooperate with a fixing ring (18, 19) for fixing the element (14) to an adjacent means (15).
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: March 13, 1990
    Inventors: Gerard Saby, Frederic Lemercier
  • Patent number: 4880079
    Abstract: A device for use with a ladder comprising one cylindrical member with horizontally spaced apertures in said cylindrical member to accept the top ends of the rails of the ladder when the invention is placed horizontally thereon. The invention is affixed to the ladder by a pliable strap or straps with fastening means and may be permanently mounted or easily removed as required.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: November 14, 1989
    Inventor: Roland P. Leclerc
  • Patent number: 4836331
    Abstract: A device which is easily attached to the stiles of any ladder. This highly reliable device creates a steadfast ladder, removing the fear of the ladder flipping over or slipping out from under. This device is created in such a manner as to be attached to any ladder and also having a clearance to allow for any shoes attached or to be attached to the ladder's base. Ground penetration is easily achieved by the slike's ability to rotate. The design of the device allows ground penetration to any depth, making allowances for obstructions. Safety is achieved by the device's ability to stabilize the ladder's lower end. The handle lies flat against the ladder's stiles creating a self-contained unit that is out of the way when not in use.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: June 6, 1989
    Inventor: Paul T. Foradori
  • Patent number: 4823912
    Abstract: A multipurpose, two-position ladder attachment for extending a ladder above overhanging roofs while bridging the eaves and gutters, for leaning against weak siding, and for installing heavy or bulky panels or windows in elevated openings. Elongated channels formed in two cantilevered brackets are clamped about the stiles of the ladder by a rod and wing nuts. The rod passes through hollow rungs of the ladder or in close proximity to the stiles if the rungs are not hollow. A flat padded board connected across the free ends of the brackets is positionable with its broad side horizontal or vertical when the ladder is leaned at a recommended angle.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: April 25, 1989
    Inventors: William E. Gould, Richard J. Gould, Steven P. Gould
  • Patent number: 4798262
    Abstract: This invention relates to tripodal support structures and more particularly to a three-legged folding step-ladder having outrigger-type support extensions on the two front support legs, a rear support member having a single ground contact point, and independently extendable and retractable safety hand rails. The support legs of the instant invention contact the ground at points spaced apart from one another to form an equilateral triangle when viewed from above.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: January 17, 1989
    Inventor: Paul Margolies
  • Patent number: 4798263
    Abstract: A stabilizer device for attachment to a ladder, comprising an attachment portion adapted to be attached to a stile of a ladder and a leg portion connected to and extending away from the attachment portion, the attachment portion being provided with two projections of adjustable length extending outwardly therefrom and positioned such that the stile can pass freely therebetween when the axis of the stile, the projections, and a line joining the projections are generally mutually perpendicular, and such that the projections engage the respective edge faces of the stile when the device is rotated about an axis generally parallel to the rungs of the ladder. The device can be in the form of a ladder anchor for preventing the bottom of the ladder from slipping, or in the form of a ladder stay for holding the top of the ladder away from a wall.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: January 17, 1989
    Assignee: Stabilad Limited
    Inventors: David H. C. Harvey, Ian G. Menelaus
  • Patent number: 4792016
    Abstract: A ladder securing device for securing a ladder to a utility pole or the like. The ladder securing device has a main elongated and flexible strap member having looped ends, with one end forming a hand loop for the user of the device. A quick release adjustment buckle is provided for adjustably engaging the main strap member. An elongated, flexible buckle strap is secured to the adjustment buckle at one end and which has a loop at its opposite end. A pair of hooks are provided for engaging the rail of the ladder. One hook is attached to the end of the main strap member opposite the hand loop and the other hook is attached to the buckle strap at the end opposite its attachment to the buckle. The device, when placed in an X-configuration about a utility pole and with the hooks attached to the rails of the ladder, permits the quick securement of the ladder to a utility pole by pulling on the hand loop.
    Type: Grant
    Filed: November 17, 1987
    Date of Patent: December 20, 1988
    Assignee: Independent Technologies, Inc.
    Inventors: Daryl E. Ingalsbe, David L. Ingalsbe, Arlen G. Bourn
  • Patent number: 4787478
    Abstract: A ladder attachment consisting of 2 pair of bars with holes, connecting rods, locknuts and washers to an extension ladder it forms a frame on the outsides of the ladder that can be adjustably extended over the ridge of a roof.The attachment allows the ladder to conform to the roof's pitch and be secured to the roof's ridge, or to stabilize the ladder against a wall or over the eve of the roof avoiding damage to the gutters.
    Type: Grant
    Filed: February 25, 1987
    Date of Patent: November 29, 1988
    Inventor: John W. Stakes, Jr.
  • Patent number: 4765439
    Abstract: A device for retaining the upper end of a ladder to a building parapet wall or the like to securely, temporarily hold the ladder. The device is provided with a frame which is temporarily attached to the ladder and projects outwardly therefrom to extend over the building parapet wall. A clamp is attachable to the frame in various positions to entrap the parapet wall between the clamp and the ladder preventing a relative movement thereof.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: August 23, 1988
    Inventor: Robert C. Kresmery
  • Patent number: 4726446
    Abstract: A protection cover for a ladder has front and rear side walls located over and extended between the upper end of the rails of a ladder. A releasable strap holds the cover on the ladder. A plurality of pads of resilient non-electrical conductive material are secured to the back side wall to protect the support surface for the ladder from the support. A pocket is secured to the front side wall to hold tools and like objects.
    Type: Grant
    Filed: March 16, 1987
    Date of Patent: February 23, 1988
    Inventor: Thomas H. Perbix
  • Patent number: 4723629
    Abstract: An extension ladder includes outwardly facing auxiliary rail channels at the lower end on each of the side rails which nestingly engage inwardly facing channels on auxiliary legs extending at an angle to the plane of the ladder for supporting the ladder on irregular terrain in a stable manner. The leg assemblies are selectively positioned independently of each other and locked in a desired position by spring-loaded fingers carried on the leg assembly channels which engage teeth on the ladder rail channels. An extension leg for either of the ladder rails is provided which nestingly engages the ladder rail channel and is locked in place by a spring-loaded finger engaging the teeth on the rail channel.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: February 9, 1988
    Assignee: Vernon M. Vanden Hoek
    Inventors: Vernon M. Vanden Hoek, Leonard J. Maasdam
  • Patent number: 4714136
    Abstract: A ladder support is provided for use with an eavestrough or gutter. The support is mounted in the eavestrough without the necessity of using fasteners. It is also mostly concealed by the eavestrough and yet supports the ladder in spaced relationship thereto so that the ladder does not contact the eavestrough and cause damage to it. The ladder support includes two main legs having members at first ends adapted to engage the eavestrough at the juncture of a back wall and a bottom thereof with the legs being of sufficient length to extend above and beyond a front rim of the eavestrough. Second ends of the main legs have brackets for engaging the rails of the ladder to support it spaced from the eavestrough and to resist sideways movement. Outwardly-extending leg braces are affixed to intermediate portions of the main legs and have feet for engaging the interior of the rim for resisting movement of the main legs when a ladder is supported thereby.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: December 22, 1987
    Assignee: Wolverine Aluminum Distributing Ltd.
    Inventor: Fernand R. Morin