7416results about "Ladders" patented technology

Floor panels are shown, which are provided with a vertical folding locking system on short edges that only locks vertically and a mechanical locking system on long edges that prevents displacement along the long edges.

An improved fall protection system has been developed. The system functions by: (1) arresting the fall of such users, thereby protecting them from impact with the ground which could cause serious injury or death; (2) providing a method of recovery and escape from a fall-arresting device by providing a user with a controlled descent back to the ground or to a lower place of safety at a safe and gradual rate of descent; (3) providing greater simplicity and wearer comfort in fall-arresting and self-recovery devices; and (4) incorporating gear storage capability into such protective devices, in order to eliminate the need to wear a separate gear storage pack, vest, tool belt, or other such garment or accessory.

A retractable step for use with a vehicle comprises a stepping member having a stepping deck, a first arm, a second arm, a motor and a stop. The first arm has a first end pivotally attached to the vehicle, and a second end pivotally attached to the stepping member. The second arm also has a first end pivotally attached to the vehicle, and a second end pivotally attached to the stepping member. The motor is drivingly connected to the first arm such that a rotation of the motor causes rotation of the first arm about its first end and moves the stepping member from a retracted position to an extended position, or vice versa. The stop is located within the range of motion of the second arm such that the second arm bears against the stop when the stepping member is in the extended position. The first and second arms are situated such that the first arm is loaded in compression and the second arm is loaded in tension when the stepping member is in the extended position and a load is placed upon it. In another embodiment, a retractable vehicle step assist comprises a rigid frame, a forward planar linkage pivotably connected to the frame along a forward upper connection width, and a rearward planar linkage pivotably connected to the frame along a rearward upper connection width. The retractable vehicle step further comprises a rigid step member having a stepping deck. The step member is pivotably connected to the forward planar linkage along a forward lower connection width, and is pivotably connected to the rearward planar linkage along a rearward lower connection width and on a side of the forward planar linkage opposite the stepping deck. The stepping deck is substantially wider than any of the forward upper connection width, the rearward upper connection width, the forward lower connection width, and the rearward lower connection width.

A retractable step assist for a vehicle comprises a step, an actuator, an optical fiber sensor, and a safety. The step is movable between a retracted position and a deployed position that is downward and outboard from the retracted position. The actuator is mechanically connected to the step to position the step. The optical fiber sensor has an output that varies when pressure is applied to the optical fiber sensor. The safety is triggered by this output from the optical fiber sensor. The safety is configured to terminate retraction of the step when the optical fiber sensor senses pressure from an object pinched by the step deck.

A universal, compact, truck tailgate ladder with support arms is disclosed, comprised of a folding ladder of otherwise conventional design, with upper leg members and lower leg members, and a series of parallel steps connecting each set of upper leg members and lower leg members. The present invention is designed to attach to the interior surface of a pick-up truck tailgate via a fastening means, such as bolts.

Ladders, ladder components and related methods are provided. In some embodiments, adjustable stepladders are provided which include locking mechanisms that enable height adjustment of the ladder through application of a force towards the rails of the ladder. In other embodiments, spreader mechanisms are provided with cross bracing located and configured to provide additional stability to the ladder while also incorporating a handle that enables efficient collapsing of the ladder while reducing the potential of pinching ones hands or fingers. In another embodiment, a device is provided for selective coupling with the ladder that includes a support or safety rail and an adjustable tray. The device may be coupled with the ladder in a number of different positions including a stowed position. In another embodiment, a hinge assembly is provided having a magnetic component configured to be magnetically coupled with and temporarily store an object on the ladder.

A method and a system for emergency evacuation of building occupants and to a method for modernization of an existing building with the evacuation system. The system is used in a multi-story building having a plurality of floors and with at least one elevator positionable at selected landings of the floors. A first device is provided for measuring the number of persons in the building and a second device is provided for detecting an emergency condition in the building. At least one control unit is provided for determining or for estimating a number of building occupants in the building. The control unit defines at least one evacuation zone in the building during the emergency condition. Based on this information, the control unit defines at least one designated floor in the building during the emergency condition. Then the system evacuates the building occupants with the elevator car and / or a stairway from the evacuation zone to the designated floor.

A step assembly is provided having a step frame mounted for movement relative to a mounting surface between a deployed position and a stored position (or between a stored position and a deployed position), and at least one boss, the boss having a notch for holding the step frame in the deployed position. The step frame preferably has at least two legs oriented parallel to each other, and horizontally spaced from one another, each of the legs defining an upper end and a lower end, an axle connected at the upper end of the at least two legs, and a step member connected between the at least two legs proximate to the lower ends thereof.

An eddy-current braking mechanism including a rotor, rotatable about a rotor axis; at least one electrically conductive member coupled to the rotor for rotation therewith; at least one magnet configured to apply a magnetic field extending at least partially orthogonal to the plane of rotation of the conductive member, and characterised in that upon rotation of the rotor, the conductive member is configured to move at least partially radially from the rotor axis into the applied magnetic field.

A fall protection safety device including a braking mechanism comprises a first component, a second component configured and arranged to move relative to the first component, and at least one magnet operatively connected to one of the components and another of the components being at least partially made of a non-ferromagnetic and electrically conductive material. The at least one magnet and the non-ferromagnetic and electrically conductive material creating an electromagnetic field force when the second component moves at a rate greater than a predetermined rate relative to the first component.

The safety garment for industrial and construction workers, and hunters incorporates a safety harness in to the body of a jacket, coat, or other apparel. The garment has a safety harness with a central attachment ring receiving a safety line, anchoring a wearer to a beam or tree trunk. The safety harness may be sewn on the outer or inner surface of a removable, reversible inner liner or a vest, or can be attached to an outer shell such as an outer vest, jacket, shirt, parka, or other garment covering the harness. The vest may be blaze orange on one side and camouflage patterned on the other. During a fall, pulling forces on the harness are equalized in both directions, providing maximal distribution of force on the wearer. The waist belt or other portion of the safety harness has attachments for removable leg loop / crotch straps and other removable accessories.

A combination descender, pulley, and force limiting rope brake for rope rescue has a supporting plate having a one-way pulley sheave rotatably mounted thereto for free-wheeling rotation of the sheave in only a first rotational direction. A fixed brake member is mounted rigidly to the supporting plate. A movable brake member is pivotally mounted to the supporting plate. A pinching opening is defined by the gap. The rope passes in a first direction through the gap when the sheave is free-wheeling in the first rotational direction. The movable brake member translates relative to the fixed brake member in cooperation with rotation of the sheave. Rotation-under-load of the sheave in an opposite rotational direction urges translation of the movable brake member towards the fixed brake member from an open position, wherein the pinching opening is open sufficiently to allow the rope to freely pass therethrough, to a closed position wherein the movable brake member closes the pinching opening so as to frictionally pinch the rope at a preset minimum opening of the pinching opening.

A quint configuration fire apparatus includes a chassis defining a longitudinal direction, a body assembly coupled to the chassis and having a storage area configured to receive a ground ladder and a fire hose, a pump coupled to the chassis, a water tank coupled to the chassis, a ladder assembly including a plurality of extensible ladder sections, the ladder assembly coupled to the chassis with a pedestal and a torque box, a single front axle coupled to a front end of the chassis, and a single rear axle coupled to a rear end of the chassis. The ladder assembly is extensible to provide a horizontal reach of at least 100 feet and a vertical height of at least 105 feet. The torque box extends along the longitudinal direction and spans the single rear axle thereby transferring loading along the chassis.

Ladders, ladder components and related methods are provided. In some embodiments, adjustable stepladders are provided which include locking mechanisms that enable height adjustment of the ladder through application of a force towards the rails of the ladder. In other embodiments, spreader mechanisms are provided with cross bracing located and configured to provide additional stability to the ladder while also incorporating a handle that enables efficient collapsing of the ladder while reducing the potential of pinching ones hands or fingers. In another embodiment, a device is provided for selective coupling with the ladder that includes a support or safety rail and an adjustable tray. The device may be coupled with the ladder in a number of different positions including a stowed position. In another embodiment, a hinge assembly is provided having a magnetic component configured to be magnetically coupled with and temporarily store an object on the ladder.

A multiple phase buck converter or boost converter, or buck-boost converter has an inductor in each phase. The inductors are inversely coupled. In a first embodiment, the converter includes a toroidal magnetic core with inductors extending under and over opposite sides of the toroidal magnetic core. The coupled inductors are thereby inversely coupled and have a relatively low ohmic resistance. In a second embodiment, the converter comprises a ladder-shaped magnetic core (i.e. having parallel sides, and connecting rungs). In this case, the inductors extend under the sides, and over the rungs. Each inductor is disposed over a separate rung. The ladder-shaped magnetic core is preferably disposed flat on a circuit board. Inverse coupling and low ohmic resistance are also provided in the second embodiment having the ladder structure.

An active interface monitoring and warning system for fall arresting / prevention devices delivering specific fault condition messages to individuals who are subject to accidental falls or other safety hazards when performing construction or the like or when operating elevating construction machinery such as aerialift work platforms and the like. The invention further provides a data logging system to record and transmit operational conditions, fault conditions and safety infractions.

A shock absorbing lanyard is a one-piece webbing. The shock absorbing lanyard has a tubular-shaped high strength outer sheath and a high elongation member inside of the outer sheath. The outer sheath and the high elongation member are secured together at spaced apart connection locations and the high elongation member is generally not secured to the outer sheath between the connection locations. Heat treatment shrinks the length of the high elongation member. The outer sheath does not substantially shrink from the heat treatment relative to the high elongation member and gathers together in an accordion-like arrangement. A tensile load applied to the lanyard stretches the high elongation member and unfolds the gathered outer sheath. The high strength outer sheath supports the tensile load when completely unfolded while the high elongation member absorbs energy as it stretches or elongates.

A universal tool holder for carrying a tool or other article, for example, a cordless drill, nail gun, hammer or shovel is provided comprising a stretchable cord that is formed into a looped end and adapted to be wrapped about the handle of a tool in such a manner that it tightly engages the tool, and a second end having a retainable object, such as a ball, that is configured to be safely and securely held within a retaining receiver. The retaining receiver is in the form of a socket-type receiver configured to correspond to the geometrical shape of the retainable object such it can removably secure the retainable object. The socket-shaped retaining receiver can be incorporated into a variety of articles usefull in carrying and storing tools, including a belt clip, a wall mounting implement or a ladder mounting implement. By integrating the retaining receiver into such a variety of articles, any tool carried by the universal tool holder can be removably secured to the retaining receiver, thereby enabling a user to suspend the tool from a belt clip, ladder or wall.

A personal safety device comprises a “smart” safety lanyard capable of automatically contacting emergency response personnel. A “smart” lanyard of the subject invention comprises a strap with one or more fall arrest mechanisms or break away mechanisms operably attached thereto. A trigger mechanism also operably attached to the safety lanyard can detect when the fall arrest or break away mechanism has been deployed. A personal communication device operably attached to both the strap and to the trigger mechanism can automatically contact response personnel when the lanyard has been deployed.

A preferred embodiment safety harness includes two straps that are operatively connected at a juncture and a D-ring proximate the juncture. A retrofittable, removable back panel padding is configured and arranged to accommodate the straps and the D-ring to aid in the comfort in donning the safety harness.

A stabilizing scaffold bracket for a ladder or the like. The preferred embodiment of the present invention configured to affix a ladder to a scaffold in a stable, yet removable fashion, the apparatus of the invention including first and second aligned plates spaced by a spacer bar, the plates having first and second ends, the first end of the plates having formed therein an upper hook member to engage a horizontal bar of the scaffold, the second end of the plates having formed therein a lower hook member configured to engage the horizontal rung of a ladder, the second end further including an upper engagement member to engage the lateral supports of the ladder. Further provided are first and second pivotal cams to removably, yet firmly, secure the unit to the scaffold, once installed.

A bulk material transport vehicle access structure includes an elongated service platform for workers which is pivotally supported at its opposite ends to cantilever arms on parallel horizontal axes to avoid binding between the roller carriages of the cantilever arms and a pair of support pillars. The floor of the platform includes a walkway and a doorway covered by a plurality of side by side doors which may be selectively opened. Electric controls are provided to automatically stop operation of the power means used to control the elevation of the cantilever arms should the service platform become tilted a predetermined extent. Electric controls are also provided to stop lowering of the service platform when it reaches the top of a bulk material transport vehicle.

A system includes a support including an extending rigid member and a first attachment at a first position on the rigid member to which a first self-retracting lifeline is attached. The first self-retracing lifeline includes a first housing from which a first lifeline exits. The first housing is movable relative to the rigid member. The system also includes at least a second attachment at a second position on the rigid member to which a second self-retracing lifeline. The second self-retracting lifeline includes a second housing from which a second lifeline exits. The second housing is movable relative to the rigid member independent of the movement of the first housing. The first position is spaced from the second position. The system further includes a connector attached to the frame to connect the frame to an article (for example, a safety harness such as a full body safety harness) worn by a user.

A running board support assembly (200) for fastening a running board step (104) to a vehicle includes a support bracket (204) for engagement with the running board step, and a mounting bracket (202) for coupling the support bracket (204) to the vehicle. The mounting bracket (202) includes a hooking end (212) and a pin (214). The support bracket (204) includes a hook (226) for engagement with the hooking end (212), and an aperture (218) for engagement with the pin (214). When assembled, the hook (226) and the aperture (218) cooperate to tension the mounting bracket (202) and thereby secure the support bracket (204) to the mounting bracket (202).

Elevated work platforms, as well as associated methods, are provided. In one particular embodiment, an elevated platform apparatus is provided comprising a first rail assembly having a pair of rails coupled with a plurality of rungs, a second rail assembly hingedly coupled with the first rail assembly, a platform configured to rest upon a portion of the first rail assembly and the second rails assembly and a cage associated with the platform. The cage may include at least one bar and at least one gate, the at least one gate being configured to swing in a first direction upon a user stepping on to the platform from the first rail assembly, and then swing back to a closed position after the user is standing on the platform. The at least one gate is also limited from being displaced in a second direction, opposite the first direction, beyond the closed position.